*M9C96 & *C9C96
Two-Stage Gas Furnaces
(Type FSP CATEGORY IV Direct
or Non Direct Vent Air Furnace)
(Type FSP CATÉGORIE IV Direct
ou four á air souי non direct)
INSTALLER: Ax all manuals adjacent to the unit.
As a professional installer you have an obligation to know
the product better than the customer. This includes all safety
precautions and related items.
Prior to actual installation, thoroughly familiarize yourself with
this Instruction Manual. Pay special attention to all safety
warnings. Often during installation or repair it is possible to
place yourself in a position which is more hazardous than
when the unit is in operation.
Remember, it is your responsibility to install the product safely
and to know it well enough to be able to instruct a customer
in its safe use.
Safety is a matter of common sense...a matter of thinking
before acting. Most dealers have a list of specic good safety
practices...follow them.
The precautions listed in this Installation Manual are intended
as supplemental to existing practices. However, if there is
a direct conict between existing practices and the content
of this manual, the precautions listed here take precedence.
RECOGNIZE THIS SYMBOL
AS A SAFETY PRECAUTION.
*NOTE: Please contact your distributor or our website for
the applicable Specication Sheet referred to in this manual.
These furnaces comply with requirements
embodied in the American National
Standard / National Standard of Canada
ANSI Z21.47·CSA-2.3 Gas Fired Central
Furnaces.
O
NLY
PERSONNEL
THAT
HAVE
BEEN
TRAINED
TO
INSTALL
,
ADJUST
,
SERVICE
OR
REPAIR
(
HEREINAFTER
, “
SERVICE
”)
THE
EQUIPMENT
SPECIFIED
IN
THIS
MANUAL
SHOULD
SERVICE
THE
EQUIPMENT
. T
HE
MANUFACTURER
WILL
NOT
BE
RESPONSIBLE
FOR
ANY
INJURY
OR
PROPERTY
DAMAGE
ARISING
FROM
IMPROPER
SERVICE
OR
SERVICE
PROCEDURES
. I
F
YOU
SERVICE
THIS
UNIT
,
YOU
ASSUME
RESPONSIBILITY
FOR
ANY
INJURY
OR
PROPERTY
DAMAGE
WHICH
MAY
RESULT
. I
N
ADDITION
,
IN
JURISDICTIONS
THAT
REQUIRE
ONE
OR
MORE
LICENSES
TO
SERVICE
THE
EQUIPMENT
SPECIFIED
IN
THIS
MANUAL
,
ONLY
LICENSED
PERSONNEL
SHOULD
SERVICE
THE
EQUIPMENT
. I
MPROPER
INSTALLATION
,
ADJUSTMENT
,
SERVICING
OR
REPAIR
OF
THE
EQUIPMENT
SPECIFIED
IN
THIS
MANUAL
,
OR
ATTEMPTING
TO
INSTALL
,
ADJUST
,
SERVICE
OR
REPAIR
THE
EQUIPMENT
SPECIFIED
IN
THIS
MANUAL
WITHOUT
PROPER
TRAINING
MAY
RESULT
IN
PRODUCT
DAMAGE
,
PROPERTY
DAMAGE
,
PERSONAL
INJURY
OR
DEATH
.
90% HEX
DO NOT LIFT
PRODUCT USING
HEAT EXCHANGER
IOG-2027A
08/2021
19001 Kermier Rd. Waller, Tx 77484
www.goodmanmfg.com•www.amana-hac.com
© 2021 Goodman Manufacturing Company, L.P.
is a registered trademark of Maytag Corporation or its related companies and is used under license.
All rights reserved.
2
Table of Contents
Safety Considerations .............................................. 3
Product Description .................................................... 5
Product Application ..................................................... 5
Location Requirements & Considerations ................. 6
Combustion & Ventilation Requirements ............... 10
Installation Positions ................................................. 10
Horizontal Applications & Considerations .............. 11
Propane Gas/High Altitude Installations.................. 11
Condensate Drain Lines & Drain Trap ........................ 18
Electrical Connections ............................................. 23
Gas Supply and Piping .................................................. 26
Circulating Air & Filters ........................................... 29
Startup Procedure & Adjustment .............................. 31
Airflow Tables ............................................................ 34
Normal Sequence of Operation ............................... 39
Operational Checks ..................................................... 40
Safety Circuit Description .......................................... 41
Troubleshooting .......................................................... 41
Maintenance .................................................................. 42
Before Leaving an Installation .................................. 42
Status Codes ................................................................ 44
Troubleshooting Chart ............................................. 45
Wiring Diagram ............................................................ 46
Start Up Checklist ...................................................... 48
3
AVERTISSEMENT
WARNING
FIRE OR EXPLOSION HAZARD
Failure to follow the safety warnings exactly could result
in serious injury, death or property damage.
Never test for gas leaks with an open flame.
Use a commercially available soap solution made
specifically for the detection of leaks to check all
connections. A fire or explosion may result causing
property damage, personal injury or loss of life.
RISQUE D'INCENDIE OU D'EXPLOSION
Si les consignes de sécurité ne sont pas suivies à la lettre,
cela peut entraîner la mort, de graves blessures ou des
dommages matériels.
Ne jamais vérifier la présence de fuites de gaz au moyen
d'une flamme nue. Vérifier tous les raccords en utilisant
une solution savonneuse commerciale conçue
spécialement pour la détection de fuites. Un incendie ou
une explosion risque de se produire, ce qui peut entraîner
la mort, des blessures ou des dommages matériels.
Safety Considerations
Adhere to the following warnings and cautions when install-
ing, adjusting, altering, servicing, or operating the furnace.
To ensure proper installation and operation, thoroughly read
this manual for specics pertaining to the installation and
application of this product.
This furnace is manufactured for use with natural gas. It
may be eld converted to operate on L.P. gas by using the
appropriate L.P. conversion kit listed in the PROPANE GAS/
HIGH ALTITUDE INSTALLATIONS section of this manual
Install this furnace only in a location and position as specied
in LOCATION REQUIREMENTS & CONSIDERATIONS
section and INSTALLATION POSITIONS section of this
manual.
Provide adequate combustion and ventilation air to the fur-
nace as specied in COMBUSTION & VENTILATION AIR
REQUIREMENTS section of this manual.
Combustion products must be discharged to the outdoors.
Connect this furnace to an approved vent system only, as
specied in VENT/FLUE PIPE & COMBUSTION AIR PIPE
section of this manual.
Never test for gas leaks with an open ame. Use a com-
mercially available soap solution made specically for the
detection of leaks to check all connections, as specied in
GAS SUPPLY AND PIPING section of this manual.
Always install a furnace to operate within the furnace’s
intended temperature-rise range with a duct system which
has external static pressure within the allowable range, as
specied on the furnace rating plate and OPERATIONAL
CHECKS section of these instructions.
When a furnace is installed so that supply ducts carry air cir-
culated by the furnace to areas outside the space containing
the furnace, the return air shall also be handled by duct(s)
sealed to the furnace casing and terminating outside the
space containing the furnace.
FROZEN AND BURST WATER PIPE HAZARD
F
AILURE
TO
PROTECT
AGAINST
THE
RISK
OF
FREEZING
MAY
RESULT
IN
PROPERTY
DAMAGE
.
S
PECIAL
PRECAUTIONS
MUST
BE
MADE
IF
INSTALLING
FURNACE
IN
AN
AREA
WHICH
MAY
DROP
BELOW
FREEZING
. T
HIS
CAN
CAUSE
IMPROPER
OPERATION
OR
DAMAGE
TO
EQUIPMENT
. I
F
THE
FURNACE
ENVIRONMENT
HAS
THE
POTENTIAL
OF
FREEZING
,
THE
DRAIN
TRAP
AND
DRAIN
LINE
MUST
BE
PROTECTED
. T
HE
USE
OF
ACCESSORY
DRAIN
TRAP
HEATERS
,
ELECTRIC
HEAT
TAPE
AND
/
OR
RV
ANTIFREEZE
IS
RECOMMENDED
FOR
THESE
INSTALLATIONS
.
CAUTION
A gas-red furnace for installation in a residential garage
must be installed as specied in the LOCATION REQUIRE-
MENTS AND CONSIDERATIONS section of this manual.
This furnace may be used as a construction site heater only
if certain conditions are met. These conditions are listed in
the PRODUCT APPLICATION section of this manual.
T
O
PREVENT
PERSONAL
INJURY
OR
DEATH
DUE
TO
IMPROPER
INSTALLATION
,
ADJUSTMENT
,
ALTERATION
,
SERVICE
OR
MAINTENANCE
,
REFER
TO
THIS
MANUAL
. F
OR
ADDITIONAL
ASSISTANCE
OR
INFORMATION
,
CONSULT
A
QUALIFIED
INSTALLER
,
SERVICER
AGENCY
OR
THE
GAS
SUPPLIER
.
WARNING
I
F
THE
INFORMATION
IN
THESE
INSTRUCTIONS
IS
NOT
FOLLOWED
EXACTLY
,
A
FIRE
OR
EXPLOSION
MAY
RESULT
CAUSING
PROPERTY
DAMAGE
,
PERSONAL
INJURY
OR
LOSS
OF
LIFE
.
D
O
NOT
STORE
OR
USE
GASOLINE
OR
OTHER
FLAMMABLE
VAPORS
AND
LIQUIDS
IN
THE
VICINITY
OF
THIS
OR
ANY
OTHER
APPLIANCE
.
D
O
NOT
TRY
TO
LIGHT
ANY
APPLIANCE
.
D
O
NOT
TOUCH
ANY
ELECTRICAL
SWITCH
;
DO
NOT
USE
ANY
PHONE
IN
YOUR
BUILDING
.
I
MMEDIATELY
CALL
YOUR
GAS
SUPPLIER
FROM
A
NEIGHBOR
’
S
PHONE
. F
OLLOW
THE
GAS
SUPPLIER
’
S
INSTRUCTIONS
.
I
F
YOU
CANNOT
REACH
YOUR
GAS
SUPPLIER
,
CALL
THE
FIRE
DEPARTMENT
.
I
NSTALLATION
AND
SERVICE
MUST
BE
PERFORMED
BY
A
QUALIFIED
INSTALLER
,
SERVICE
AGENCY
OR
THE
GAS
SUPPLIER
.
WHAT TO DO IF YOU SMELL GAS:
�
�
�
�
WARNING
4
H
EATING
UNIT
SHOULD
NOT
BE
UTILIZED
WITHOUT
REASONABLE
,
ROUTINE
,
INSPECTION
,
MAINTENANCE
AND
SUPERVISION
. I
F
THE
BUILDING
IN
WHICH
ANY
SUCH
DEVICE
IS
LOCATED
WILL
BE
VACANT
,
CARE
SHOULD
BE
TAKEN
THAT
SUCH
DEVICE
IS
ROUTINELY
INSPECTED
,
MAINTAINED
AND
MONITORED
.
IN
THE
EVENT
THAT
THE
BUILDING
MAYBE
EXPOSED
TO
FREEZING
TEMPERATURES
AND
WILL
BE
VACANT
,
ALL
WATER
-
BEARING
PIPES
SHOULD
BE
DRAINED
,
THE
BUILDING
SHOULD
BE
PROPERLY
WINTERIZED
,
AND
THE
WATER
SOURCE
CLOSED
.
IN
THE
EVENT
THAT
THE
BUILDING
MAY
BE
EXPOSED
TO
FREEZING
TEMPERATURES
AND
WILL
BE
VACANT
,
ANY
HYDRONIC
COIL
UNITS
SHOULD
BE
DRAINED
AS
WELL
AND
,
IN
SUCH
CASE
,
ALTERNATIVE
HEAT
SOURCES
SHOULD
BE
UTILIZED
.
WARNING
T
O
PREVENT
POSSIBLE
PROPERTY
DAMAGE
,
PERSONAL
INJURY
OR
DEATH
DUE
TO
ELECTRICAL
SHOCK
,
THE
FURNACE
MUST
BE
LOCATED
TO
PROTECT
THE
ELECTRICAL
COMPONENTS
FROM
WATER
.
WARNING
Drain trap must be primed at time of installation. Trap is in-
ternally partitioned; add water to both inlet ports until water
appears at both sides of the outlet opening. Failure to prime
trap at time of installation may have a negative eect on
combustion quality and pressure switch action.
Shipping Inspection
All units are securely packed in shipping containers tested
according to International Safe Transit Association specica-
tions. The carton must be checked upon arrival for external
damage. If damage is found, a request for inspection by
carrier’s agent must be made in writing immediately.
The furnace must be carefully inspected on arrival for damage
and bolts or screws which may have come loose in transit.
In the event of damage the consignee should:
1. Make a notation on delivery receipt of any visible
damage to shipment or container.
2. Notify carrier promptly and request an inspection.
3. With concealed damage, carrier must be notied as
soon as possible - preferably within ve days.
4. File the claim with the following support documents
within a nine month statute of limitations.
• Original or certied copy of the Bill of Lading, or
indemnity bond.
• Original paid freight bill or indemnity in lieu thereof.
• Original or certied copy of the invoice, showing
trade and other discounts or reductions.
• Copy of the inspection report issued by carrier’s
representative at the time damage is reported to
carrier.
The carrier is responsible for making prompt inspection of
damage and for a thorough investigation of each claim. The
distributor or manufacturer will not accept claims from dealers
for transportation damage.
S
HOULD
OVERHEATING
OCCUR
OR
THE
GAS
SUPPLY
FAIL
TO
SHUT
OFF
,
TURN
OFF
THE
MANUAL
GAS
SHUTOFF
VALVE
EXTERNAL
TO
THE
FURNACE
BEFORE
TURNING
OFF
THE
ELECTRICAL
SUPPLY
.
WARNING
P
OSSIBLE
PROPERTY
DAMAGE
,
PERSONAL
INJURY
OR
DEATH
DUE
TO
FIRE
,
EXPLOSION
,
SMOKE
,
SOOT
,
CONDENSATION
,
ELECTRICAL
SHOCK
OR
CARBON
MONOXIDE
MAY
RESULT
FROM
IMPROPER
INSTALLATION
,
REPAIR
OPERATION
,
OR
MAINTENANCE
OF
THIS
PRODUCT
.
WARNING
Electrostatic Discharge (ESD)
Precautions
NOTE: Discharge your body’s static electricity before
touching unit. An electrostatic discharge can adversely aect
electrical components.
Use the following precautions during furnace installation
and servicing to protect the integrated control module from
damage. By putting the furnace, the control, and the person
at the same electrostatic potential, these steps will help
avoid exposing the integrated control module to electrostatic
discharge. This procedure is applicable to both installed and
non-installed (ungrounded) furnaces.
1. Disconnect all power to the furnace. Do not touch the
integrated control module or any wire connected to the
control prior to discharging your body’s electrostatic
charge to ground.
2. Firmly touch a clean, unpainted, metal surface of the
furnaces near the control. Any tools held in a person’s
hand during grounding will be discharged.
3. Service integrated control module or connecting
wiring following the discharge process in step 2. Use
caution not to recharge your body with static electricity;
(i.e., do not move or shue your feet, do not touch
ungrounded objects, etc.). If you come in contact with
an ungrounded object, repeat step 2 before touching
control or wires.
4. Discharge your body to ground before removing a new
control from its container. Follow steps 1 through 3 if
installing the control on a furnace. Return any old or
new controls to their containers before touching any
ungrounded object.
To The Installer
Before installing this unit, please read this manual thoroughly
to familiarize yourself with specic items which must be ad-
hered to, including but not limited to: unit maximum external
static pressure, gas pressures, BTU input rating, proper elec-
trical connections, circulating air temperature rise, minimum
or maximum CFM, and motor speed connections.
T
O
PREVENT
PROPERTY
DAMAGE
,
PERSONAL
INJURY
OR
DEATH
DUE
TO
FIRE
,
DO
NOT
INSTALL
THIS
FURNACE
IN
A
MOBILE
HOME
,
TRAILER
,
OR
RECREATIONAL
VEHICLE
.
WARNING
5
Product Description
Features
The *M9C96 furnace may be installed upow or horizon-
tally with left or right side down. The *C9C96 furnace may
be installed downow or horizontally with left or right side
down. *M9C96 & *C9C96 two-stage gas furnaces features a
multi-speed ECM indoor fan motor, two heating inputs (W1
& W2), two cooling inputs (Y1/Y & Y2) and a two stage gas
valve. A single stage heating thermostat may also be used
in conjunction with timed transition to high re by the furnace
integrated control board.
Product Application
This furnace is primarily designed for residential home-heat-
ing applications. It is NOT designed or certied for use in
mobile homes, trailers or recreational vehicles. Neither is it
designed or certied for outdoor applications. The furnace
must be installed indoors (i.e., attic space, crawl space, or
garage area provided the garage area is enclosed with an
operating door).
This furnace can be used in the following non-industrial
commercial applications:
Schools, Oce buildings, Churches, Retail stores, Nursing
homes, Hotels/motels, Common or oce areas
In such applications, the furnace must be installed with the
following stipulations:
• It must be installed per the installation instructions
provided and per local and national codes.
• It must be installed indoors in a building constructed
on site.
• It must be part of a ducted system and not used in
a free air delivery application.
B10259-216
CO can cause serious illness including permanent brain
damage or death.
Advertencia especial para la instalación de calentadores ó manejadoras
de aire en áreas cerradas como estacionamientos ó cuartos de servicio.
B10259-216
El monóxido de carbono puede causar enfermedades severas
como daño cerebral permanente ó muerte.
Las emisiones de monóxido de carbono pueden circular a través
del aparato cuando se opera en cualquier modo.
B10259-216
RISQUE D'EMPOISONNEMENT AU
MONOXYDE DE CARBONE
Le monoxyde de
des
carbone peut causer des maladies graves telles que
dommages permanents au cerveau et meme la mort.
Cette ventilation est nécessaire pour éviter le danger d'intoxication
au CO pouvant survenir si un appareil produisant du monoxyde
de carbone continue de fonctionner au sein de la zone confinée.
• It must not be used as a “make-up” air unit.
• It must be installed as a two-pipe system for
combustion air.
• All other warranty exclusions and restrictions apply
This furnace is an ETL dual-certied appliance and
is appropriate for use with natural or propane gas
(NOTE: If using propane, a propane conversion kit
is required).
Dual certication means that the combustion air inlet pipe is
optional and the furnace can be vented as a:
Non-direct vent (single pipe) central forced air
furnace in which combustion air is taken from the
installation area or from air ducted from the outside
or,
Direct vent (dual pipe) central forced air furnace
in which all combustion air supplied directly to the
furnace burners through a special air intake system
outlined in these instructions.
This furnace may be used as a construction site heater ONLY
if all of the following conditions are met:
• The vent system is permanently installed per these
installation instructions.
• A room thermostat is used to control the furnace.
Fixed jumpers that provide continuous heating
CANNOT be used and can cause long term
equipment damage. Bi-metal thermostats, or any
thermostat aected by vibration must not be used
during construction.
6
• Return air ducts are provided and sealed to the
furnace.
• A return air temperature range between 60ºF (16ºC)
and 80ºF (27ºC) is maintained.
• MERV 11 (Example
P/N
AMP-11-2025-45) air
lter(s) are installed in the system and inspected
daily and replaced as needed during construction
and upon completion of construction.
• The input rate and temperature rise are set per the
furnace rating plate.
• The furnace must be installed as a two pipe system,
using 100% outside air for combustion during
construction.
• The furnace heat exchanger, components,
duct system, air lters and evaporator coils are
thoroughly cleaned following nal construction clean
up by a qualied person.
• All furnace operating conditions (including ignition,
input rate, temperature rise and venting) are veried
by a qualied person according to these installation
instructions.
• Furnace doors must be in place on the furnace while
the furnace is operating in any mode.
• Damage or repairs due to failure to comply with
these requirements are not covered under the
warranty.
NOTE: The Commonwealth of Massachusetts requires
that the following additional requirements must also be met:
• Gas furnaces must be installed by a licensed
plumber or gas tter.
• A T-handle gas cock must be used.
• If the unit is to be installed in an attic, the passageway
to and the service area around the unit must have
ooring.
To ensure proper furnace operation, install, operate and
maintain the furnace in accordance with these installa-
tion and operation instructions, all local building codes
and ordinances. In their absence, follow the latest edition
of the National Fuel Gas Code (NFPA 54/ANSI Z223.1), and/
or CAN/CSA B149.1-15 Installation Codes, local plumbing
or waste water codes, and other applicable codes.
A copy of the National Fuel Gas Code (NFPA 54/ANSI
Z223.1) can be obtained from any of the following:
American National Standards Institute
25 West 43rd Street, 4th Floor
New York, NY 10036
National Fire Protection Association
1 Batterymarch Park
Quincy, MA 02169-7471
CSA International
8501 East Pleasant Valley
Independence, OH 44131
The rated heating capacity of the furnace should be greater
than or equal to the total heat loss of the area to be heated.
The total heat loss should be calculated by an approved
method or in accordance with “ASHRAE Guide” or “Manual
J-Load Calculations” published by the Air Conditioning Con-
tractors of America.
A copy of the CAN/CSA B149.1-15 Installation Codes can
also be obtained from:
CSA International
178 Rexdale Boulevard
Etobicoke, Ontario, Canada M9W 1R3
Location Requirements
& Considerations
Follow the instructions listed below and the guidelines provided
in the Combustion and Ventilation Air Requirements section
when selecting a furnace location.
P
OSSIBLE
PROPERTY
DAMAGE
,
PERSONAL
INJURY
OR
DEATH
DUE
TO
FIRE
,
EXPLOSION
,
SMOKE
,
SOOT
,
CONDENSATION
,
ELECTRICAL
SHOCK
OR
CARBON
MONOXIDE
MAY
RESULT
FROM
IMPROPER
INSTALLATION
,
REPAIR
OPERATION
,
OR
MAINTENANCE
OF
THIS
PRODUCT
.
WARNING
T
O
PREVENT
POSSIBLE
EQUIPMENT
DAMAGE
,
PROPERTY
DAMAGE
,
PERSONAL
INJURY
OR
DEATH
,
THE
FOLLOWING
BULLET
POINTS
MUST
BE
OBSERVED
WHEN
INSTALLING
THIS
UNIT
.
WARNING
• Centrally locate the furnace with respect to the
proposed or existing air distribution system.
• Ensure the temperature of the return air entering
the furnace is between 55°F and 100°F when the
furnace is heating.
• Provide provisions for venting combustion products
outdoors through a proper venting system.
Special consideration should be given to vent/
ue pipe routing and combustion air intake pipe
when applicable. Refer to Vent/Flue Pipe and
Combustion Air Pipe -Termination Locations for
appropriate termination locations and to determine
if the piping system from furnace to termination can
be accomplished within the guidelines given. NOTE:
The length of ue and/or combustion air piping can
be a limiting factor in the location of the furnace.
• Locate the furnace so condensate ows downwards
to the drain. Do not locate the furnace or its
condensate drainage system in any area subject to
below freezing temperatures without proper freeze
protection. Refer to Condensate Drain Lines and
Trap for further details.
• Ensure adequate combustion air is available for
the furnace. Improper or insucient combustion air
can expose building occupants to gas combustion
products that could include carbon monoxide. Refer
to Combustion and Ventilation Air Requirements.
7
• Set the furnace on a level oor to enable proper
condensate drainage. If the oor becomes wet or
damp at times, place the furnace above the oor on
a concrete base sized approximately 1-1/2” larger
than the base of the furnace. Refer to the Horizontal
Applications and Considerations for leveling of
horizontal furnaces.
• Ensure upow or horizontal furnaces are not installed
directly on carpeting, or any other combustible
material. The only combustible material allowed is
wood.
• Exposure to contaminated combustion air will result
in safety and performance-related problems. Do
not install the furnace where the combustion air is
exposed to the following substances:
permanent wave solutions
carbon tetrachloride
deicing salts or chemicals
cleaning solutions (such as perchloroethylene)
paint removers
cements and glues
chlorinated waxes or cleaners
water softening chemicals
halogen type refrigerants
chlorine-based swimming pool chemicals
printing inks
varnishes
hydrochloric acid
antistatic fabric softeners for clothes dryers
• Seal o a non-direct vent furnace if it is installed
near an area frequently contaminated by any of
the above substances. This protects the non-direct
vent furnace from airborne contaminants. To ensure
that the enclosed non-direct vent furnace has an
adequate supply of combustion air, vent from a
nearby uncontaminated room or from outdoors.
Refer to the Combustion and Ventilation Air
Requirements for details.
• If the furnace is used in connection with a cooling
coil unit, install the furnace upstream or in parallel
with the cooling coil unit. Premature heat exchanger
failure will result if the cooling unit is placed ahead
of the furnace.
For vertical (upow or downow) applications, the
minimum cooling coil width shall not be less than
furnace width minus 1”. Additionally, a coil installed
above an upow furnace or under a counterow
furnace may be the same width as the furnace or
may be one size larger than the furnace. Example:
a “C” width coil may be installed with a “B” width
furnace. For upow applications, the front of the coil
and furnace must face the same direction.
• If the furnace is installed in a residential garage,
position the furnace so that the burners and ignition
source are located not less than 18 inches (457 mm)
above the oor. Protect the furnace from physical
damage by vehicles.
• If the furnace is installed horizontally, ensure the
access doors are not on the “up/top” or “down/
bottom” side of the furnace.
• Do not connect this furnace to a chimney ue that
serves a separate appliance designed to burn solid
fuel.
• On Counterow Installations, the air conditioning coil
must be downstream on the supply (positive) side
of the furnace heat exchanger.
• Counterow Installation over a noncombustible oor.
Before setting the furnace over the plenum opening,
ensure the surface around the opening is smooth
and level. A tight seal should be made between the
furnace base and oor by using a silicone rubber
caulking compound or cement grout.
• Counterow Installation over a combustible oor.
If installation over a combustible oor becomes
necessary, use an accessory subbase (see
Specication Sheet applicable for your model for
details.) A special accessory subbase must be
used for upright counterow unit installations over
any combustible material including wood. Refer
to subbase instructions for installation details.
Follow the instructions with the subbase for proper
installation. Do not install the furnace directly on
carpeting, tile, or other combustible material other
than wood ooring.
NOTE: The subbase will not be required if an air conditioning
coil is installed between the supply air opening on the furnace
and the oor.
Clearances and Accessibility
NOTES:
• For servicing or cleaning, a 24” front clearance is
required.
• Unit connections (electrical, ue and drain) may
necessitate greater clearances than the minimum
clearances listed above.
• In all cases, accessibility clearance must take
precedence over clearances from the enclosure
where accessibility clearances are greater.
NOTES:
• For servicing or cleaning, a 24” front clearance is
required.
• Unit connections (electrical, ue and drain) may
necessitate greater clearances than the minimum
clearances listed above.
• In all cases, accessibility clearance must take
precedence over clearances from the enclosure
where accessibility clearances are greater.
8
Clearance in accordance with local installation codes, the
requirements of the gas supplier and the manufacturer's
installation instructions.
Dégaugement conforme aux codes d'installation locaux, aux
exigences du fournisseur de gaz et aux instructions
d'installation du fabricant.
Installations must adhere to the clearances to combustible
materials to which this furnace has been design certied. The
minimum clearance information for this furnace is provided
on the unit’s clearance label. These clearances must be per-
manently maintained. Clearances must also accommodate
an installation’s gas, electrical, and drain trap and drain line
connections. If the alternate combustion air intake or vent/ue
connections are used additional clearance must be provided
to accommodate these connections. Refer to Vent/Flue Pipe
and Combustion Air Pipe for details.
NOTE: In addition to the required clearances to combustible
materials, a minimum of 24 inches service clearance must
be available in front of the unit.
POSITION* SIDES REAR FRONT BOTTOM FLUE TOP
Upflow 0" 0" 3" C 0" 1"
Horizontal 6" 0" 3" C 0" 6"
*M9C96 MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS
(INCHES)
C = If placed on combustible floor, floor MUST be wood only.
POSITION* SIDES REAR FRONT BOTTOM FLUE TOP
Counterflow 0" 0" 3" C 0" 1"
Horizontal 6" 0" 3" C 0" 6"
*C9C96 MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS
(INCHES)
C = If placed on combustible floor, floor MUST be wood only.
NC = For installation on non-combustible floors only. A combustible
subbase must be used for installations on combustible flooring.
TOP
BOTTOM
TOP
BOTTOM
Figure 1
A furnace installed in a conned space (i.e., a closet or utility
room) must have two ventilation openings with a total min-
imum free area of 0.25 square inches per 1,000 BTU/hr of
furnace input rating. Refer to Specication Sheet applicable to
your model for minimum clearances to combustible surfaces.
One of the ventilation openings must be within 12 inches of
the top; the other opening must be within 12 inches of the
bottom of the conned space. In a typical construction, the
clearance between the door and door frame is usually ade-
quate to satisfy this ventilation requirement.
CARBON MONOXIDE POISONING HAZARD
Failure to follow the steps outlined below for each
appliance connected to the venting system being placed
into operation could result in carbon monoxide poisoning
or death.
The following steps shall be followed with each appliance
connected to the venting system placed in operation,
while any other appliances connected to the venting
system are not in operation:
1. Seal any unused openings in the venting system.
2. Inspect the venting system for proper size and
horizontal pitch, as required by the National Fuel Gas
Code, ANSI Z223.1 or the Natural Gas and Propane
Installation Code, CSA B149.1-15 and these
instructions. Determine that there is no blockage or
restriction, leakage, corrosion and other deficiencies
which could cause an unsafe condition.
3. As far as practical, close all building doors and
windows and all doors between the space in which
the appliance(s) connected to the venting system are
located and other spaces of the building.
4. Close fireplace dampers.
5. Turn on clothes dryers and any appliance not
connected to the venting system. Turn on any
exhaust fans, such as range hoods and bathroom
exhausts, so they shall operate at maximum speed.
Do not operate a summer exhaust fan.
6. Follow the lighting instructions. Place the appliance
being inspected in operation. Adjust thermostat so
appliance shall operate continuously.
7. Test for spillage from draft hood appliances at the
draft hood relief opening after 5 minutes of main
burner operation. Use the flame of a match or
candle.
8. If improper venting is observed during any of the
above tests, the venting system must be corrected in
accordance with the National Fuel Gas Code ANSI
Z223.1/NFPA 54 and/or National Gas and Propane
Installation Code CSA B149.1-15.
9. After it has been determined that each appliance
connected to the venting system properly vents
when tested as outlined above, return doors,
windows, exhaust fans, fireplace dampers and any
other gas burning appliance to their previous
conditions of use.
WARNING
9
RISQUE D'INTOXICATION AU MONOXYDE DE CARBONE
Si les étapes décrites ci-dessous ne sont pas suivies pour
chacun des appareils raccordés au système de ventilation
au moment de sa mise en marche, cela peut entraîner une
intoxication au monoxyde de carbone ou la mort. Les
étapes suivantes doivent être suivies pour chacun des
appareils raccordés au système de ventilation au moment
de sa mise en marche, alors que tous les autres appareils
raccordés au système de ventilation ne sont pas en
marche :
1) Sceller toutes les ouvertures inutilisées du s
ystème de
ventilation.
2) Inspecter le système de ventilation afin de vérifier si la
taille et l'inclinaison par rapport à l'horizontale sont
conformes aux exigences du National Fuel Gas Code, ANSI
Z223.1/NFPA 54 ou du Code d'installation du gaz naturel
et du propane, CSA B149.1 et à ces instructions. Vérifier
qu'il n'y a pas d'obstruction ou de restriction, de fuite, de
corrosion et d'autres problèmes qui pourraient entraîner
une situation dangereuse.
3) Si possible, fermer toutes les portes et fenêtres du
bâtiment ainsi que toutes les portes séparant l'endroit où
se trouvent les appareils raccordés au système de
ventilation et les autres zones du bâtiment.
4) Fermer le registre des foyers.
5) Mettre les sécheuses en marche ainsi que tous les
autres appareils qui ne sont pas raccordés au système de
ventilation. Mettre en marche tous les ventilateurs de
tirage, comme celui des hottes de cuisine et des salles de
bains, et les régler à la puissance maximale. Ne pas mettre
en marche les ventilateurs d'été.
6) Suivre les instructions d'allumage. Mettre en marche
l'appareil soumis à l'inspection. Régler le thermostat de
manière à ce que l'appareil fonctionne en continu.
7) Vérifier la présence de fuite au niveau de l'ouverture du
coupe-tirage des appareils qui en sont dotés après 5
minutes de fonctionnement du brûleur principal. Utiliser
la flamme d'une allumette ou d'une bougie.
8) Si un problème de ventilation est observé pendant l'un
des essais décrits ci-dessus, des correctifs doivent être
apportés au système de ventilation conformément au
National Fuel Gas Code, ANSI Z223.1/NFPA 54 et (ou) au
Code d'installation du gaz naturel et du propane, CSA
B149.1.
9) Une fois qu'il a été déterminé que chaque appareil
raccordé au système de ventilation fonctionne
correctement au moyen des essais décrits ci-dessus, les
portes, les fenêtres, les ventilateurs, les registres de foyer
et tous les autres appareils de combustion alimentés au
gaz doivent être remis dans leur état initial.
AVERTISSEMENT
Existing Furnace Removal
NOTE: When an existing furnace is removed from a venting
system serving other appliances, the venting system may be
too large to properly vent the remaining attached appliances.
The following vent testing procedure is repro duced from
the American National Standard/National Standard
of Canada for Gas-Fired Central Furnaces ANSI Z21.47,
CSA-2.3 latest edition Section 1.23.1.
The following steps shall be followed with each appliance
connected to the venting system placed in operation, while
any other appliances connected to the venting system are
not in operation:
1. Seal any unused openings in the venting system.
2. Inspect the venting system for proper size and hor-
izontal pitch, as required by the National Fuel Gas
Code, ANSI Z223.1 or the Natural Gas and Propane
Installation Code, CSA B149.1-15 and these instruc-
tions. Determine that there is no blockage or restriction,
leakage, corrosion and other deciencies which could
cause an unsafe condition.
3. As far as practical, close all building doors and windows
and all doors between the space in which the appli-
ance(s) connected to the venting system are located
and other spaces of the building.
4. Close replace dampers.
5. Turn on clothes dryers and any appliance not connect-
ed to the venting system. Turn on any exhaust fans,
such as range hoods and bathroom exhausts, so they
shall operate at maximum speed. Do not operate a
summer exhaust fan.
6. Follow the lighting instructions. Place the appliance
being inspected in operation. Adjust thermostat so
appliance shall operate continuously.
7. Test for spillage from draft hood appliances at the draft
hood relief opening after 5 minutes of main burner
operation. Use the ame of a match or candle.
8. If improper venting is observed during any of the above
tests, the venting system must be corrected in accor-
dance with the National Fuel Gas Code ANSI Z223.1/
NFPA 54 and/or National Gas and Propane Installation
Code CSA B149.1-15.
9. After it has been determined that each appliance
connected to the venting system properly vents when
tested as outlined above, return doors, windows,
exhaust fans, replace dampers and any other gas
burning appliance to their previous conditions of use.
If resizing is required on any portion of the venting system,
use the appropriate table in Appendix G in the latest edi-
tion of the National Fuel Gas Code ANSI Z223.1 and/or
CSA B149.1-15 Installation Codes.
10
Thermostat Location
The thermostat should be placed approximately ve feet from
the oor on a vibration-free, inside wall in an area having
good air circulation. Do not install the thermostat where it
may be inuenced by any of the following:
• Drafts, or dead spots behind doors, in corners, or
under cabinets.
• Hot or cold air from registers.
• Radiant heat from the sun.
• Light xtures or other appliances.
• Radiant heat from a replace.
• Concealed hot or cold water pipes, or chimneys.
• Unconditioned areas behind the thermostat, such
as an outside wall.
Consult the instructions packaged with the thermostat
for mounting instructions and further precautions.
Combustion & Ventilation
Requirements
T
O
AVOID
PROPERTY
DAMAGE
,
PERSONAL
INJURY
OR
DEATH
,
SUFFICIENT
FRESH
AIR
FOR
PROPER
COMBUSTION
AND
VENTILATION
OF
FLUE
GASES
MUST
BE
SUPPLIED
. M
OST
HOMES
REQUIRE
OUTSIDE
AIR
BE
SUPPLIED
INTO
THE
FURNACE
AREA
.
WARNING
Improved construction and additional insulation in buildings
have reduced heat loss by reducing air inltration and escape
around doors and windows. These changes have helped in
reducing heating/cooling costs but have created a problem
supplying combustion and ventilation air for gas red and
other fuel burning appliances. Appliances that pull air out
of the house (clothes dryers, exhaust fans, replaces, etc.)
increase the problem by starving appliances for air.
House depressurization can cause back drafting or improper
combustion of gas-red appliances, thereby exposing build-
ing occupants to gas combustion products that could include
carbon monoxide.
If this furnace is to be installed in the same space with other
gas appliances, such as a water heater, ensure there is an
adequate supply of combustion and ventilation air for the
other appliances. Refer to the latest edition of the National
Fuel Gas Code NFPA 54/ANSI Z223.1 or CAN/CSA B149.1-
15 Installation Codes or applicable provisions of the local
building codes for determining the combustion air require-
ments for the appliances.
Most homes will require outside air be supplied to the fur-
nace area by means of ventilation grilles or ducts connecting
directly to the outdoors or spaces open to the outdoors such
as attics or crawl spaces.
Installation Positions
Figure 2A
Figure 2B
Figure 2C
Figure 2D
11
Recommended Installation Positions
*M9C96 models may be installed upow or horizontally with
left or right side down. *C9C96 models may be installed down
ow or horizontally with left or right side down. Do not install this
furnace on its back. For upright upow furnaces, return air
ductwork may be attached to the side panel(s) and/or base-
pan. For horizontal upow furnaces, return air ductwork must
be attached to the basepan. For both upright or horizontal
counterow furnaces, return ductwork must be attached to
the basepan (top end of the blower compartment). NOTE:
Ductwork must never be attached to the back of the furnace.
Refer to “Recommended Installation Positions” gure for
appropriate installation positions, ductwork connections, and
resulting airow arrangements.
Horizontal Applications
& Considerations
When installing a furnace horizontally, additional consider-
ation must be given to the following:
Furnace Suspension
If suspending the furnace from rafters or joists, use 3/8”
threaded rod and 2”x2”x1/8” angle iron as shown in the
following diagram. The length of rod will depend on the
application and the clearances necessary.
If the furnace is installed in a crawl space it must be sus-
pended from the oor joist or supported by a concrete pad.
Never install the furnace on the ground or allow it to be
exposed to water.
2" 2" 3/8"
ANGLE
IRON
(3
PLACES
)
X X
Figure 3
Front Cover Pressure Switch Tube
Location
When a furnace is installed horizontally with left side down,
the front cover pressure switch tube must be re-located to
he lower port of the collector box cover.
1. Remove tube from front cover pressure switch and
collector box cover.
2. Remove rubber plug from bottom collector box port and
install on top of collector box port.
3. Locate 24’’ x 1/4’’ tube in bag assembly.
4. Install one end on front cover pressure switch.
5. Route tube to lower port on collector box cover and cut
o excess tubing.
Drain Trap and Lines
In horizontal applications the condensate drain trap is secured
to the furnace side panel, suspending it below the furnace. A
minimum clearance of 5.5” below the furnace must be provid-
ed for the drain trap. Additionally, the appropriate downward
piping slope must be maintained from the drain trap to the
drain location. Refer to Condensate Drain Trap and Lines for
further details. If the drain trap and drain line will be exposed
to temperatures near or below freezing, adequate measures
must be taken to prevent condensate from freezing.
Horizontal Furnace Leveling
Leveling ensures proper condensate drainage from the heat
exchanger. For proper ue pipe drainage, the furnace must
be level lengthwise from end to end. The furnace should have
a slight tilt from back to front with the access doors downhill
from the back panel approximately 1/2 to 3/4 inches. The
slight tilt allows the heat exchanger condensate, generated
in the recuperator coil, to ow forward to the recuperator coil
front cover.
Alternate Electrical and Gas Line Con-
nections
This furnace has provisions allowing for electrical and gas
line connections through either side panel. In horizontal
applications the connections can be made either through the
“top” or “bottom” of the furnace.
Drain Pan
A drain pan must be provided if the furnace is installed above
a conditioned area. The drain pan must cover the entire area
under the furnace (and air conditioning coil if applicable).
Freeze Protection
Refer to Horizontal Applications and Conditions - Drain Trap
and Lines.
Propane Gas/High Altitude
Installations
WARNING
POSSIBLE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH MAY
OCCUR IF THE CORRECT CONVERSION KITS ARE NOT INSTALLED. THE
APPROPRIATE KITS MUST BE APPLIED TO ENSURE SAFE AND PROPER
FURNACE OPERATION. ALL CONVERSIONS MUST BE PERFORMED BY
A
QUALIFIED INSTALLER OR SERVICE AGENCY.
This furnace is shipped from the factory congured for natural
gas at standard altitude. Propane gas installations require
an orice and spring change to compensate for the energy
content dierence between natural and propane gas.
12
High altitude installations may require both a pressure switch
and an orice/spring change. These changes are necessary
to compensate for the natural reduction in the density of
both the gas fuel and the combustion air at higher altitude.
For furnaces being converted to LP gas, it is strongly rec-
ommended that a LPLP03 kit also be installed. The use of
this kit will prevent the furnace from ring when the LP gas
supply pressure is too low to support proper combustion.
Installation of this furnace at altitudes above 7000 ft (2134 m)
shall be made in accordance with the Listed High Altitude
Conversion Kit available with this furnace.”
L'installation de ce générateur de chaleur à des altitudes
supérieures à 7000 pi (2134 m) doit être effectuée
conformément aux instructions accompagnant la trousse de
conversion pour haute altitude fournie avec cet appareil.
For installations above 7000 feet, please refer to the furnace
Specication Sheets for required kit(s).
Contact the distributor for a tabular listing of appropriate
manufacturer’s kits for propane gas and/or high altitude
installations. The indicated kits must be used to insure safe
and proper furnace operation. All conversions must be per-
formed by a qualied installer, or service agency.
HIGH STAGE LOW STAGE
#45 (1)
#50 (2)
LPM-08* (1) 1.25MM (1)
LPM-30* (2) #57 (2)
PRESSURE
SWITCH
(1) FOR USE WITH ALL MODELS EXCEPT *M9C960303AN
ALTITUDE
KIT
ORIFICE
MANIFOLD PRESSURE
3.5" w.c.
1.9" w.c.
*supports both Honeywell and White-Rodgers 2-stage valves
0 - 7000
PROPANE
NATURAL
NONE
GAS
10.0" w.c.
6.0" w.c.
NONE
NONE
(2) FOR USE WITH ONLY *M9C960303AN
Vent Pipe & Combustion Air
F
AILURE
TO
FOLLOW
THESE
INSTRUCTIONS
CAN
RESULT
IN
BODILY
INJURY
OR
DEATH
. C
AREFULLY
READ
AND
FOLLOW
ALL
INSTRUCTIONS
GIVEN
IN
THIS
SECTION
.
WARNING
U
PON
COMPLETION
OF
THE
FURNACE
INSTALLATION
,
CAREFULLY
INSPECT
THE
ENTIRE
FLUE
SYSTEM
BOTH
INSIDE
AND
OUTSIDE
OF
THE
FURNACE
TO
ASSURE
IT
IS
PROPERLY
SEALED
. L
EAKS
IN
THE
FLUE
SYSTEM
CAN
RESULT
IN
SERIOUS
PERSONAL
INJURY
OR
DEATH
DUE
TO
EXPOSURE
TO
FLUE
PRODUCTS
,
INCLUDING
CARBON
MONOXIDE
.
WARNING
This manual will refer to the pipe that discharges products of
combustion to the outdoors as the “vent” pipe or “ue” pipe.
The pipe that supplies air for combustion to the furnace will
be referred to as the “intake” pipe or “combustion air” pipe.
This furnace is dual certied and may be installed as a non-
direct vent (single pipe) or direct vent (dual pipe) appliance.
Materials - Installations in the U.S.A
PVC, CPVC, or ABS pipe & ttings are typically used as
venting and intake pipe materials. All 90° elbows must be
medium or long radius types. A medium radius elbow should
measure ~3-1/16” minimum from the plane of one opening
to the center line of the other opening for 2” diameter pipe,
and ~4-9/16” minimum for 3” pipe.
In addition to these materials, Innoue® by Centrotherm
Eco Systems and PolyPro® by M&G Duravent are also
approved vent and combustion air materials for installations
in the U.S.A. Manufacturers Installation instructions for these
products must be followed. These products have specic
instructions for installing, joining and terminating. Do not mix
materials or components of one manufacturer with materials
or components of another manufacturer. Refer to the following
chart for plastic pipe & ttings specications
Materials - Installations in Canada
All installations in Canada must conform to the requirements
of CAN/CSA B149.1-15 code. All vent components, including
primer and cement, must be listed to ULC S636. The certied
pipe and ttings should be clearly marked with the ULC
standard “S636”. The primer and cement used must be of
the same manufacturer as the vent system. For Royal Pipe
System 636; use GVS-65 Primer (Purple) and GVS-65 PVC
Solvent Cement. For IPEX System 636, use PVC/CPVC
Primer, Purple or clear. Use PVC Solvent cement (Gray). For
Canadian installations, ABS may be used as a combustion air
pipe only. ABS is not an approved vent material in Canada.
If ABS is used as a combustion air pipe, it must be CSA
certied. Always follow the manufacturer’s instructions in the
use of primer and cement. Do not use primer and cement
around potential sources of ignition. Do not use primer or
cement beyond its expiration date.
Materials and Joining Methods
T
O
AVOID
BODILY
INJURY
,
FIRE
OR
EXPLOSION
,
SOLVENT
CEMENTS
MUST
BE
KEPT
AWAY
FROM
ALL
IGNITION
SOURCES
(
I
.
E
.,
SPARKS
,
OPEN
FLAMES
,
AND
EXCESSIVE
HEAT
)
AS
THEY
ARE
COMBUSTIBLE
LIQUIDS
.
A
VOID
BREATHING
CEMENT
VAPORS
OR
CONTACT
WITH
SKIN
AND
/
OR
EYES
.
WARNING
13
PVC ASTMSTANDARD
SCHEDULE40PIPE D1785
SCHEDULE40CELLULARCOREPIPE F891
SDR21OR26PIPE D2241
FITTINGS D2466
ABS
SCHEDULE40PIPE D1527
SCHEDULE40CELLULARCOREPIPE F628
FITTINGS D2468
CPVC
SCHEDULE40PIPE F441
SDR21OR26PIPE F442
FITTINGS F438
POLYPROPYLENE
INNOFLUE®(CENTROTHERM)
POLYPRO®(DURAVENT)
PRIMER&SOLVENTCEMENT
PVCPRIMER F656
CPVCPRIMER F656
PVCSOLVENTCEMENT D2564
CPVCSOLVENTCEMENT F493
ABSSOLVENTCEMENT D2235
ABS/PVC/CPVCALLPURPOSECEMENT(FORPIPE&
FITTINGSOFTHESAMEMATERIAL)
D2564,D2235,F493
TRANSITIONCEMENTFORABSTOPVCorCPVC D3188
INSTALLATIONSINCANADA
PVC&CPVCPIPE&FITTINGS
PVC&CPVCSOLVENTCEMENT
TRANSITIONCEMENT
INNOFLUE®(CENTROTHERM)
POLYPRO®(DURAVENT)
VENTINGMATERIALREQUIREMENTS
ULCS636
WARNING
Upon completion of the furnace installation,
carefully inspect the entire flue system both
inside and outside of the furnace to assure it is
properly sealed. Leaks in the flue system can
result in serious personal injury or death due
to exposure to flue products, including carbon
monoxide.
WARNING
Failure to follow these instructions can result
in bodily injury or death. Carefully read and
follow all instructions given in this section.
WARNING
To avoid bodily injury, fire or explosion, solvent
cements must be kept away from all ignition
sources (i.e., sparks, open flames, and excessive
heat) as they are combustible liquids. Avoid
breathing cement vapors or contact with skin
and/or eyes.
PREFERRED
Figure 4
TRANSITION NO LESS
THAN 45 DEGREES TO
HORIZONTAL PLANE TO
AVOID CREATING A WATER
TRAP IN VENT PIPING.
ACCEPTABLE
Figure 5
NO TRANSITION ON
HORIZONTAL PLANE,
THIS CREATES A
WATER TRAP AND
RESTRICTS FLUE
GASES
Figure 6
14
Termination Locations
Non-Direct Vent
Vent/Flue Termination
No Terminations
Above Walkway
Non-Direct Vent
Vent/Flue Termination
Direct Vent
Vent/Flue Termination
Forced Air
Inlet
Non-Direct Vent
&
Direct Vent
Vent/Flue Terminations
Grade or Highest
Anticipated
Snow Level
Vent Clearances
Figure 7
VENT-DRAIN
RF000142 Coupling
Figure 8
WARNING
Edges of sheet metal holes may be sharp. Use
gloves as a precaution when removing hole
plugs.
Figure 9
Insert flange. Cut 2 ½” long.
RF000142
SEE FIGURE 8
Figure 10
15
1
2 3 4 5 6 7 8
2 75 70 65 60 55 50 45 40
3 114 107 100 93 86 79 72 65
2 75 70 65 60 55 50 45 40
3 114 107 100 93 86 79 72 65
2 50 45 40 35 30 25 20 15
3 143 136 129 122 115 108 101 94
2 60 55 50 45 40 35 30 25
3 113 106 99 92 85 78 71 64
2 60 55 50 45 40 35 30 25
3 120 113 106 99 92 85 78 71
2 45 40 35 30 25 20 15 10
3 103 96 89 82 75 68 61 54
2 45 40 35 30 25 20 15 10
3 151 144 137 130 123 116 109 102
*M 9C961205DN
3 185 178 171 164 157 150 143 136
2 100 95 90 85 80 75 70 65
3 110 103 96 89 82 75 68 61
2 45 40 35 30 25 20 15 10
3 110 103 96 89 82 75 68 61
2 35 30 25 20 15 10 5 NA
3 103 96 89 82 75 68 61 54
2 45 40 35 30 25 20 15 10
3 110 103 96 89 82 75 68 61
*MEC96/*CEC96 Direct Vent (2 - Pipe) and Non-Direct Vent (1- Pipe)
(6)
Maximum Allowable Length of Vent/Flue Pipe
M ODEL
Pipe Size
(4)
(in.)
Number of Elbows
(3) (5)
*M 9C960303AN
&
*M 9C960403AN
*M 9C960603AN
*M 9C960603BN^
*M 9C960803BN
*M 9C960804CN
*M 9C961004CN
*M 9C961005CN
*C9C960403BN
*C9C960603BN
*C9C960803BN
*C9C961005CN
^ *M9C960603BN-add 45' of 2" pipe for upflow.
Figure 11
WARNING
The rubber elbow is not designed to support
a load. When the rubber elbow is mounted
externally to the furnace cabinet, extreme
care must be taken to adequately support field-
supplied vent/flue piping, as damage can result
in leaks causing bodily injury or death due
to exposure to flue gases, including carbon
monoxide.
16
Vent/Flue Pipe Terminations
12" MIN.
VENT/FLUE TEE (
or
45° ELBOW
TURNED DOWN or
90° ELBOW TURNED
DOWN
OPTIONAL)
Horizontal Termination (Single Pipe)
Above Highest Anticipated Snow Level
Figure 13
12" MIN. TO GRADE OR
HIGHEST ANTICIPATED
SNOW LEVEL
6” MAX
4” MIN
Standard Horizontal Terminations (Dual Pipe)
Figure 14
Vent Pipe
Use alternate vent
& combination
air locations
Combustion Air Pipe
Field Supplied
Drain Tee on Vent Pipe
Condensate trapped
to prevent flue gas from escaping
and routed to field supplied
condensate disposal
1/4” per foot min.
slope to furnace
6’ Max.
Floor
B
a
s
e
m
e
n
t
/
C
r
a
w
l
s
p
a
c
e
DOWN VENTING UPFLOW MODEL FURNACES ONLY
All piping and fittings must be joined per material manufacturers specifications
to prevent separation and flue gas leaks.
Figure 15
Combustion Air Intake Options (See Figure 12)
The RF000142 coupling (Figure 8) can be secured directly
to the furnace intake coupling if condensation is a concern.
If the RF000142 is used on the combustion air inlet, it must
be installed with the arrow pointing up. It should be noted,
the combustion air will actually be moving in a direction
opposite of the arrow on the RF000142 coupling. It must
have a eld supplied, trapped drain tube free-draining to
proper condensate disposal location. A loop in the drain
tube can serve as a trap. The unused RF000142 drain tting
should be capped. A tee installed in the intake pipe is also an
acceptable method of catching condensation. It must have
a eld supplied, trapped drain tube or pipe, free-draining to
proper condensate disposal location. A loop in the drain tube
can serve as a trap.
COMBUSTION AIR INTAKE OPTIONS
Figure 12
CAUTION
Be sure not to damage internal wiring or other
components when reinstalling coupling and
screws.
NOTE: For installations at or above 7,000 feet
altitude, use 3” venting.
17
COMBUSTION AIR INTAKE
(OPTIONAL)
*Not required for
single pipe installation
TEE (OPTIONAL)
9
6
”
M
A
X
.
-
3
”
M
I
N.
R
O
O
F
L
I
N
E
12” MIN
HEIGHT DIFFERENCE
BETWEEN
INTAKE AND VENT
12” MIN TO ROOF OR HIGHEST
ANTICIPATED SNOW LEVEL
Figure 16
STRAIGHT
ELBOWS
Direct Vent (Dual Pipe) Piping
Figure 17
90°
ELBOWS
3” - 24”
Alternate Horizontal Vent Termination (Dual Pipe)
Figure 18
VENT/FLUE
TEE
COMBUSTION
AIR INTAKE.
DISTANCE BETWEEN
COMBUSTION AIR
INTAKE AND GRADE
DISTANCE BETWEEN
VENT AND GRADE
Figure 19
Combustion Air Intake may also be snorkeled to obtain 12” min ground clearance.
90°
ELBOWS
3”-24” BETWEEN PIPES
Alternate vent termination above anticipated
snow level (dual pipe)
Figure 20
Vent/Flue and Combustion Air Pipe
Terminations
3” MIN
12” MIN TO GRADE OR HIGHEST
ANTICIPATED SNOW LEVEL
3”MIN
24”MAX
12” MIN SEPARATION
Termination of Multiple Direct Vent Furnaces
Figure 21
18
Vent/Intake Terminations For Installation
of Multiple Direct Vent Furnaces
If more than one direct vent furnace is to be installed vertically
through a common roof top, maintain the same minimum
clearances between the exhaust vent and air intake termi-
nations of adjacent units as with the exhaust vent and air
intake terminations of a single unit.
If more than one direct vent furnace is to be installed horizon-
tally through a common side wall, maintain the clearances
as in the following gure. Always terminate all exhaust vent
outlets at the same elevation and always terminate all air
intakes at the same elevation.
3” MIN
12” MIN TO GRADE OR HIGHEST
ANTICIPATED SNOW LEVEL
12” MIN SEPARATION
3”MIN
24”MAX
Termination of Multiple Direct Vent Furnaces
Figure 22
Concentric Vent Termination
Refer to the directions provided with the Concentric Vent Kit
for installation specications.
Side Wall Vent Kit
This kit is to be used with 2” or 3” direct vent systems. The
vent kit must terminate outside the structure and may be in-
stalled with the intake and exhaust pipes located side-by-side
or with one pipe above the other. These kits are NOT intended
for use with single pipe (non-direct vent) installations.
Refer to the directions furnished with the Side Wall Vent
Kit (p/n 0170K00000S or 0170K00001S) for installation
specications.
Vertical Installation
Horizontal Installation
Side Wall Vent Kit
Figure 23
Condensate Drain Lines & Drain
Trap
A condensing gas furnace achieves its high level of ecien-
cy by extracting heat from the products of combustion to
the point where condensation takes place. The condensate
must be collected in the furnace drain trap and routed to
an appropriate drain location in compliance with local and
national codes.
Follow the bullets listed below when installing the drain
system. Refer to the following sections for specic details
concerning furnace drain trap installation and drain hose
hook ups.
• The drain trap supplied with the furnace must be
used.
• The drain trap must be primed at time of
installation.
• The drain line between furnace and drain location
must meet local and national codes.
• The drain line between furnace and drain location
must maintain a 1/4 inch per foot downward slope
toward the drain.
• Do not trap the drain line in any other location
than at the drain trap supplied with the furnace.
• If the drain line is routed through an area which
may see temperatures near or below freezing,
precautions must be taken to prevent condensate
from freezing within the drain line.
• If an air conditioning coil is installed with the
furnace, a common drain may be used. An open
tee must be installed in the drain line, to relieve
positive air pressure from the coil’s plenum. This
is necessary to prohibit any interference with the
function of the furnace’s drain trap.
General Drain Information
All furnace models come with a factory installed drain trap.
For vertical installations, the trap will remain in the factory
position. All furnace models installed horizontally require
the trap to be relocated. Many drain hoses have a built–in
grommet which will provide a cabinet seal when installed. See
instructions below for your model and installation position.
NOTE: Both sides of the drain trap must be primed prior
to initial furnace start up.
19
Field Supplied Drain
Drain the furnace and air conditioning coil if applicable, in
compliance with code requirements. In horizontal installa-
tions, a eld installed rubber coupling will allow the drain trap
to be removed for cleaning. The drain trap must be primed
before initial furnace start up. When an air conditioning coil
drain is connected to the eld supplied furnace drain, it must
be vented with an open tee installed at a height no higher
than the bottom of the furnace collector box to prevent air
conditioning condensate from backing up into the furnace if
the common drain became blocked.
#
3
#1
#2
#4
#5
#
6
#7
#8
#9
#10
#11
100 Degree
Elbow
Coupling
Figure 24
NOTE: Hoses are model specic
and not all hoses will be shipped with all models.
E
DGES
OF
SHEET
METAL
HOLES
MAY
BE
SHARP
. U
SE
GLOVES
AS
A
PRECAUTION
WHEN
REMOVING
HOLE
PLUGS
.
WARNING
HIGH VOLTAGE !
T
O
AVOID
THE
RISK
OF
INJURY
,
ELECTRICAL
SHOCK
OR
DEATH
,
THE
FURNACE
MUST
BE
ELECTRICALLY
GROUNDED
IN
ACCORDANCE
WITH
LOCAL
CODES
OR
IN
THEIR
ABSENCE
,
WITH
THE
LATEST
EDITION
OF
THE
N
ATIONAL
E
LECTRIC
C
ODE
.
WARNING
WARNING
T
O
AVOID
THE
RISK
OF
INJURY
,
ELECTRICAL
SHOCK
OR
DEATH
,
THE
FURNACE
MUST
BE
ELECTRICALLY
GROUNDED
IN
ACCORDANCE
WITH
LOCAL
CODES
OR
,
IN
THEIR
ABSENCE
,
WITH
THE
LATEST
EDITION
OF
THE
N
ATIONAL
E
LECTRICAL
C
ODE
.
Upflow Model Installed Vertically
The trap and factory installed hoses remain as shipped.
The furnace drain may exit either the right or left side of the
furnace cabinet. Both sides of the cabinet have two .875”
diameter holes which can be used interchangeably for drain
and low voltage wiring purposes. If a higher drain exit is need-
ed, a .875” diameter hole may be added in the area shown
in Figure 25. Any unused cabinet opening must be sealed.
Do not allow drain hose to sag or trap water.
Side Cut-Out
12”
3”
Right side shown.
Acceptable
area for
drain hole.
Figure 25
Drain Exiting Right Side
1. Locate and Install the 45º pipe / hose drain coupling
from the outside of the cabinet (barbed end goes in the
cabinet) through hole in the right side of the cabinet
and secure with two eld supplied #8 self-tapping
screws (see Figure 26).
2. Locate the long drain hose #3 and cut at line “A”.
3. Install large end of hose #3 to trap outlet and secure
with 1.25” clamp.
20
4. Install smaller end of hose #3 on 45º elbow and secure
with 1” clamp.
5. Refer to Field Supplied Drain section for instructions
on eld supplied / installed drain on outlet of furnace
trap.
Installer selects right or left side drain
and installs this hose accordingly.
Hose #1
Hose #2
45 degree
barb-pipe
adapter
45 degree
barb-pipe
adapter
Figure 26
Drain Exiting Left Side
1. Install the 45 degree pipe / hose drain coupling from
the outside of the cabinet (barbed end goes in the
cabinet) through the hole in the left side of the cabinet
and secure with two eld supplied #8 self-tapping
screws (see Figure 26).
2. Locate the long drain hose #3 and cut at “B” line for a
17.5” cabinet; cut at line “C” for a 21” cabinet; do not
cut for a “D” width cabinet.
3. Install large end of hose #3 to trap outlet and secure
with 1.25” clamp.
4. Install smaller end of hose #3 on 45º elbow and secure
with 1” clamp.
5. Refer to Field Supplied Drain section for instructions
on eld supplied / installed drain on outlet of furnace
trap.
Upflow Model Installed Horizontally with
Right Side Down (See Figure 27)
Minimum 5 ½” clearance is required for the drain trap
beneath the furnace.
1. Remove the clamps from both ends of the drain hoses.
2. Remove the two screws holding the drain trap to the
blower deck.
3. Remove the trap and two hoses from the blower deck
4. Remove the two plugs from the right side of the cabinet
and install them in the blower deck.
5. (Draining the Vent Elbow) Locate hose #2 (factory
installed) and cut 1” away from the 45 degree bend,
discard the 45 degree section. Insert hose #2 from
outside the cabinet through the cabinet drain hole
nearest the top. Secure it to the barbed tting in the
elbow with a red clamp.
6. For models DM96VE0303AN, DM96VE0403AN and
DM96VE0603AN; locate the hose #2 (factory installed)
and cut 1.5” length from the end of the hose. Insert
hose #2 from outside the cabinet through the cabinet
drain’s hole nearest to the top. Secure it to the barbed
tting in the elbow with a red clamp.
7. (Draining the Collector Box) Install the non-grommet
end of hose #11 from outside the cabinet in the bottom
drain hole. Install on collector box and secure with a
silver clamp.
8. Use two silver clamps and secure the hoses to drain
trap. The trap outlet faces the front of the furnace.
Secure the trap to the cabinet using two screws
removed in step 2 by inserting the two screws through
the large set of holes in the top mounting tabs of the
trap into the two predrilled holes in the side of the
cabinet.
9. Refer to Field Supplied Drain section for instructions on
eld supplied / installed drain on outlet of furnace trap.
Hose #11
Hose #2
Figure 27
Upflow Model Installed Horizontally with
Left Side Down (See Figure 28)
Minimum 5 ½” clearance is required for the drain trap
beneath the furnace.
*Also see Front Cover Pressure Switch Tube Location on
page 11
1. Remove the clamps from the two drain tubes on the trap.
2. Remove the two screws holding the drain trap to the
blower deck.
3. Remove the trap and hoses from the blower deck .
4. Remove the two plugs from the left side of the cabinet
and install them in the blower deck.
5. (Draining the Vent Elbow) Locate hose #6. Measuring
from the non-grommet end; cut o and discard 1 ½”
for a “D” width cabinet, 5” for a “C” width cabinet, 8 ½”
for a “B” width cabinet.
21
6. Remove the rubber plug from vent – drain elbow side
port. Place hose #6 on the vent – drain elbow side port
and secure with a silver clamp .
7. Unused vent-drain elbow drip leg port must be
sealed to prevent ue gases from escaping. Insert
the rubber plug removed in Step 6 into the unused
elbow drain port; Inserting a blunt tool such as a
3/16” Allen wrench into the center of the rubber
plug will stretch the plug and allow complete
insertion.
8. Locate hose #5 and cut 3” from the non-grommet end.
Discard the section without the grommet.
9. Insert the cut end of tube #5 through the lower cabinet
drain hole.
10. Connect hose #6 & hose #5 using 100º elbow and
secure with two red clamps.
11. (Draining the Collector Box) Remove cap from left
side collector box drain port (bottom in horizontal left
position) and install it on the right side (top) collector
box drain port.
12. Install the non-grommet end of hose #11 from outside
the cabinet in the upper drain hole. Install on collector
box and secure with a silver clamp.
13. Use two silver clamps and secure the hoses to drain
trap. The trap outlet faces the front of the furnace.
Secure the trap to the cabinet using two screws
removed in step 2 by inserting the two screws through
the large set of holes in the top mounting tabs of the
trap into the two predrilled holes in the side of the
cabinet.
14. Refer to Field Supplied Drain section for instructions on
eld supplied / installed drain on outlet of furnace trap.
Hose #6
Hose #5
Hose #11
Figure 28
Upflow Model Installed Horizontally with
Left Side Down-Alternate (See Figure 29)
*Also see Front Cover Pressure Switch Tube Location on
page 11
1. (Draining the RF000142 Coupling) Locate hose #2
(factory installed). Cut o and discard the 45°radius end.
2. Install 90°radius end of hose #2 on RF000142 drain
outlet and secure with a red clamp.
3. Insert coupling in hose #2 and secure with a red clamp.
4. Locate hose #5 and cut 3” from the non-grommet end.
Discard the section without the grommet.
5. Insert the cut end of tube #5 through the lower cabinet
drain hole.
6. Insert 100 degree elbow in the cut end of hose #5.
7. Locate hose #6. Using red clamps, connect between
the coupling and 100 degree elbow, cutting o excess
tubing.
8. (Draining the Collector Box) Remove cap from left
side collector box drain port (bottom in horizontal left
position) and install it on right side (top) collector box
drain port.
9. Install the non-grommet end of hose #11 from outside
the cabinet in the upper drain hole. Install on collector
box and secure with a silver clamp.
10. Use two silver clamps and secure the hoses to drain
trap. The trap outlet faces the front of the furnace.
Secure the trap to the cabinet using two screws
removed in step 2 by inserting the two screws through
the large set of holes in the top mounting tabs of the
trap into the two predrilled holes in the side of the
cabinet.
Insert flange. Cut 2 ½” long.
R 000142F
Figure 29
Counterflow Model Installed Vertically
The furnace drain may exit the right or left side of the furnace
cabinet (left side preferred) Trap and factory installed hoses
remain as shipped if the drain will exit the left side of the
cabinet. Draining from the right side requires relocation of
the trap to outside the cabinet.
Drain Exiting Left Side (See Figure 30)
1. Install a eld supplied rubber coupling secured with
a 1 1/4” clamp to enable removing the trap for future
cleaning. Alternately, a PVC tting may be glued on
the trap outlet.
2. Install drain per local and National codes.
22
Hose #4 x 3
Hose #5
Figure 30
Drain Exiting Right Side (See Figure 31)
1. Remove hose clamps and hoses from trap.
2. Remove trap and factory installed drain tube assemblies.
3. (Draining the Vent Elbow) Insert the non-grommet end
hose #10 into the cabinet back drain hole. Insert a
coupling into the drip leg of the vent-drain elbow and
secure with a silver clamp. Secure hose #10 on vent -
drain elbow barb tting with a silver clamp.
4. (Draining the Collector Box) Insert non-grommet end of
hose #9 into the cabinet front drain hole and secure on
collector box drain port with a silver clamp.
5. Mate the drain trap inlets to the hoses and secure with
silver clamps.
6. Line up the trap mounting holes with the pre-drilled holes
in the furnace and secure with 2 screws removed in step
2.
7. Refer to Field Supplied Drain section for instructions on
eld supplied / installed drain on outlet of furnace trap.
Figure 31
Counterflow Model Installed Horizontal-
ly with Right Side Down (See Figure 32)
Minimum 5 1/2” clearance is required for the drain trap be-
neath the furnace.
NOTE: For horizontal installations, some of the required
hoses are found in the factory-installed hose assemblies.
Remove the hose clamps to obtain the respective hoses
needed for installation, and install per the following directions.
1. Remove the drain trap and factory installed drain tube
assemblies.
2. Remove two 1’’ plugs from right side of cabinet.
3. (Draining the Collector Box) From outside the cabinet,
insert the non-grommet end hose #7 into the back drain
hole and secure to collector box drain port using a silver
clamp.
4. (Draining the Vent Elbow) Insert the straight barbed
coupling into the vent - drain elbow drip leg and secure
with a red clamp.
5. From outside the cabinet, insert the non-grommet end
of hose #8 into the front cabinet drain hole and secure
on the vent - drain elbow barb tting using a red clamp.
6. Place the drain hoses on the trap inlets and secure with
silver clamps. The outlet of the trap must face the original
bottom of furnace.
7. Using the two sheet metal screws provided in the cabinet,
secure the trap to the furnace.
8. Refer to Field Supplied Drain section for instructions on
eld supplied/installed drain on outlet of furnace trap.
Hose #8
Hose #7
Hose #7
Hose #7
Figure 32
Counterflow Model Installed Horizontal-
ly with Left Side Down (See Figure 33)
*Also see Front Cover Pressure Switch Tube Location on
page 11.
Minimum 5 1/2” clearance is required for the drain trap be-
neath the furnace.
NOTE: For horizontal installations, some of the required
hoses are found in the factory-installed hose assemblies.
23
Remove the hose clamps to obtain the respective hoses
needed for installation, and install per the following directions.
1. Remove the factory installed drain trap and hose
assemblies. Leave the 100° elbow inserted and
clamped in the vent-drain elbow.
2. Remove two 1”plugs from left side of cabinet
3. (Draining the Collector Box) Remove the cap from
the left side of the collector box drain port (bottom in
horizontal left position) and install it on right side drain
port.
4. Place radius end of hose #4 (factory installed) on the
collector box drain port and secure with a silver clamp.
5. Insert hose #2 from outside the cabinet in the front
drain hole.
6. Connect hose #4 & hose #2 together using a straight
barbed coupling and two gold clamps (factory
installed).
7. (Draining the Vent Elbow) Remove rubber plug from
vent – drain elbow side port.
8. The unused vent-drain elbow drip leg port must be
plugged to prevent ue gases from escaping. Insert
rubber plug removed in step 7 into the 100°elbow.
(Inserting a blunt tool such as a 3/16’’ Allen wrench
into the center of the rubber plug will stretch the plug
and allow complete insertion)
9. Place radius end of hose #4 on the side port of vent
– drain elbow and secure with a gold clamp.
10. Insert a ½” diameter PVC pipe (factory installed) into
hose #4 and secure with a gold clamp.
11.Insert the non-grommet end of hose #5 (factory
installed) from outside the cabinet in the back drain
hole.
12. Insert 100º elbow in hose #5 and secure with a red
clamp.
13. Locate hose #4 and cut a cut o a 4” straight section
and discard the radius end.
14. Connect the 4” straight section of hose #4 to the 100º
elbow and the PVC pipe and secure with red clamps.
15. Connect the hoses to the trap inlets and secure with
silver clamps, drain trap outlet must point to the original
bottom of the furnace.
16.Using the two sheet metal screws provided in the
cabinet, secure the trap to the furnace.
17. Refer to Field Supplied Drain section for instructions on
eld supplied / installed drain on outlet of furnace trap.
Hose #4
Hose #5
Hose #4
Hose #2
Figure 33
Electrical Connections
Wiring Harness
The wiring harness is an integral part of this furnace. Wires
are color coded for identication purposes. Refer to the
wiring diagram for wire routings. If any of the original wire
as supplied with the furnace must be replaced, it must be
replaced with wiring material having a temperature rating of
at least 105° C. Any replacement wiring must be a copper
conductor.
HIGH VOLTAGE !
T
O
AVOID
THE
RISK
OF
ELECTRICAL
SHOCK
,
WIRING
TO
THE
UNIT
MUST
BE
POLARIZED
AND
GROUNDED
.
WARNING
HIGH VOLTAGE !
T
O
AVOID
PERSONAL
INJURY
OR
DEATH
DUE
TO
ELECTRICAL
SHOCK
,
DISCONNECT
ELECTRICAL
POWER
BEFORE
SERVICING
OR
CHANGING
ANY
ELECTRICAL
WIRING
.
WARNING
L
ABEL
ALL
WIRES
PRIOR
TO
DISCONNECTION
WHEN
SERVICING
CONTROLS
. W
IRING
ERRORS
CAN
CAUSE
IMPROPER
AND
DANGEROUS
OPERATION
. V
ERIFY
PROPER
OPERATION
AFTER
SERVICING
.
CAUTION
115 Volt Line Connections
Before proceeding with electrical connections, ensure that
the supply voltage, frequency, and phase correspond to that
specied on the unit rating plate. Power supply to the furnace
must be NEC Class 1, and must comply with all applicable
codes. The furnace must be electrically grounded in accor-
dance with local codes or, in their absence, with the latest
edition of The National Electric Code, ANSI NFPA 70 and /
or The Canadian Electric Code CSA C22.1.
24
Use a separate fused branch electrical circuit containing prop-
erly sized wire, and fuse or circuit breaker. The fuse or circuit
breaker must be sized in accordance with the maximum
overcurrent protection specied on the unit rating plate. An
electrical disconnect must be provided at the furnace location.
Connect hot, neutral, and ground wires as shown in the wir-
ing diagram located on the unit’s blower door. Metal conduit
is not considered a substitute for an actual ground wire to
the unit. For direct vent applications, the cabinet opening to
the junction box must be sealed air tight using either an UL
approved bushing such as Heyco Liquid Tight or by applying
non-reactive UL approved sealant to bushing.
Line polarity must be observed when making eld connec-
tions. Line voltage connections can be made through either
the right or left side panel. The furnace is shipped congured
for a left side electrical connection with the junction box
located inside the burner compartment. To make electri-
cal connections through the opposite side of the furnace,
the junction box must be relocated to the other side of the
burner compartment prior to making electrical connections.
To relocate the junction box, follow the steps shown below.
NOTE: Wire routing must not to interfere with circulator
blower operation, lter removal, or routine maintenance.
Junction Box Relocation
E
DGES
OF
SHEET
METAL
HOLES
MAY
BE
SHARP
. U
SE
GLOVES
AS
A
PRECAUTION
WHEN
REMOVING
HOLE
PLUGS
.
WARNING
T
O
PREVENT
PERSONAL
INJURY
OR
DEATH
DUE
TO
ELECTRIC
SHOCK
,
DISCONNECT
ELECTRICAL
POWER
BEFORE
INSTALLING
OR
SERVICING
THIS
UNIT
.
WARNING
HIGH VOLTAGE !
T
O
AVOID
THE
RISK
OF
INJURY
,
ELECTRICAL
SHOCK
OR
DEATH
,
THE
FURNACE
MUST
BE
ELECTRICALLY
GROUNDED
IN
ACCORDANCE
WITH
LOCAL
CODES
OR
IN
THEIR
ABSENCE
,
WITH
THE
LATEST
EDITION
OF
THE
N
ATIONAL
E
LECTRIC
C
ODE
.
WARNING
Line voltage connections can be made through either the right
or left side panel. The furnace is shipped congured for a left
side electrical connection. To make electrical connections
through the opposite side of the furnace, the junction box
must be relocated to the left side prior to making electrical
connections. To relocate the junction box, perform the fol-
lowing steps.
1. Remove the burner compartment door.
2. Remove and save the two screws securing the junction
box to the side panel.
3. Relocate junction box and associated plugs and
grommets to opposite side panel. Secure with screws
removed in step 2.
To ensure proper unit grounding, the ground wire should run
from the furnace ground screw located inside the furnace
junction box all the way back to the electrical panel. NOTE:
Do not use gas piping as an electrical ground. To conrm
proper unit grounding, turn o the electrical power and per-
form the following check.
1. Measure resistance between the neutral (white)
connection and one of the burners.
2. Resistance should measure 10 ohms or less.
This furnace is equipped with a blower door interlock switch
which interrupts unit voltage when the blower door is opened
for servicing. Do not defeat this switch.
24 Volt Thermostat Wiring
WIRE ROUTING MUST NOT INTERFERE WITH CIRCULATOR BLOWER
OPERATION, FILTER REMOVAL OR ROUTINE MAINTENANCE.
IMPORTANT NOTE
Low voltage connections can be made through either the
right or left side panel. Thermostat wiring entrance holes
are located in the blower compartment. The following gure
shows connections for a “heat/cool system”.
This furnace is equipped with a 40 VA transformer to facilitate
use with most cooling equipment. Consult the wiring diagram,
located on the blower compartment door, for further details
of 115 Volt and 24 Volt wiring.
Thermostat - Single -Stage Heating with Single-Stage
Cooling
NOTE: To apply a single-stage Heating Thermostat, the thermostat
selector switch on the Integrated Control Module must be set on
single-stage.
Figure 34
Y
C
Y
C
G
R
W/W1
Y2
Y/Y1
C
G
R
W/W1
W2
ROOM THERMOSTAT
INTEGRATED FURNACE
CONTROL MODULE
REMOTE COOLING UNI
T
(SINGLE STAGE)
W2
Thermostat - Two-Stage Heang with Single-Stage Cooling
Thermostat - Two-Stage Heating with Single-Stage Cooling
Figure 35
25
Thermostat - Two-Stage Heang with Two-Stage Cooling
Y1
C
Y1C
G
R
W1
Y2
Y/Y1
C
G
R
W/W1
W2
ROOM THERMOSTAT
INTEGRATED FURNACE
CONTROL MODULE
REMOTE COOLING UNI
T
(TWO STAGE)
W2
Y2
Y2
Thermostat - Two-Stage Heating with Two-Stage Cooling
Thermostat Wiring Diagrams
Figure 36
Single-Stage Heating Thermostat
Application
A single-stage heating thermostat may be used to control
this furnace, however the furnace is setup by default to use a
two-stage heating thermostat. To use a single stage heating
thermostat the installer must make the desired selections
in the user menus using the push button switches on the
control board.
. When a single stage heating thermostat is used there are
two options for controlling the timed
• Press the Left or Right menu switch to get to the A H S
menu.
• The menu will display these options; no 10 20 30 60 AUt
• Fixed time options are expressed in minutes on the
display as;10 20 30 60.
• If AUt (Automatic) is selected, the actual timing for the
transition to 2nd stage heat will be calculated by the
control board based on length of run time of previous
heating cycles (duty cycle).
• Press the center switch to save the selection.
In Auto mode, the transition to 2nd stage heat will vary be-
tween 1 to 12 minutes
Duty Cycle %
Timing to 2nd
Stage Gas Heat
Demand
0-38 12 minutes Light
39-50 10 minutes
Light to
Average
51-62 7 minutes Average
63-75 5 minutes
Average
to Heavy
76-88 3 minutes Heavy
89-100 1 minutes Heavy
Fossil Fuel Applications
This furnace can be used in conjunction with a heat pump
in a fossil fuel application. A fossil fuel application refers to
a combined gas furnace and heat pump installation which
uses an outdoor temperature sensor to determine the most
cost ecient means of heating (heat pump or gas furnace).
A heat pump thermostat with three stages of heat is required
to properly use a two-stage furnace in conjunction with a heat
pump. Refer to the fossil fuel kit installation instructions for
additional thermostat requirements.
Strictly follow the wiring guidelines in the fossil fuel kit instal-
lation instructions. All furnace connections must be made
to the furnace two-stage integrated control module and the
“FURNACE” terminal strip on the fossil fuel control board.
Twinning
Two furnaces of the same model may be twinned. The in-
tegrated control board has a 3/16” terminal labeled “TWIN”
located beside the low voltage thermostat connection strip.
Twinning allows simultaneous operation of two furnaces and
forces the indoor blower motors of each furnace to operate
synchronously into a common duct system. Using the twin-
ning function will require only eld installed wiring with no
external kits or parts.
The staging and speed tap options must be set the same
on both furnaces.
NOTE: Each furnace must be connected to it’s own 115 VAC
power supply. The L1 connection to each furnace must be
in phase (connected to circuit breakers on the same 115
VAC service panel phase leg). To verify that the furnaces
are in phase, check from L1 to L1 on each furnace with a
voltmeter. If the furnaces are in phase, the voltage between
both furnaces will be ZERO.
R
OOM THERMOSTAT
Y2
Y/Y1
C
G
R
W/W1
W2
Y2
Y/Y1
C
G
R
W/W1
W2
Y2
Y/Y1
C
G
R
W/W1
W2
TWIN
TWIN
COND UNIT
CONTACTOR
COND UNIT
CONTACTOR
FURNACE 1
FURNACE 2
Figure 37
115 Volt Line Connection of Accessories
(Humidifier and Electronic Air Cleaner)
The furnace integrated control module is equipped with line
voltage accessory terminals for controlling power to an op-
tional eld-supplied humidier and/or electronic air cleaner.
The accessory load specications are noted in the chart
below:
Humidifier
1.0 Amp maximum at 120 VAC
Electronic Air Cleaner
1.0 Amp maximum at 120 VAC
26
Turn OFF power to the furnace before installing any acces-
sories. Follow the humidier or air cleaner manufacturers’
instructions for locating, mounting, grounding, and controlling
these accessories. Accessory wiring connections are to be
made through the 1/4” quick connect terminals provided on
the furnace integrated control module. The humidier and
electronic air cleaner hot terminals are identied as HUM H
and EAC H. The humidier and electronic air cleaner neutral
terminals are identied as NEUTRAL. All eld wiring must
conform to applicable codes. Connections should be made
as shown.
If it is necessary for the installer to supply additional line
voltage wiring to the inside of the furnace, the wiring must
conform to all local codes, and have a minimum temperature
rating of 105°C. All line voltage wire splices must be made
inside the furnace junction box.
The integrated control module humidier terminal (HUM
H) is energized with 115 volts whenever the induced draft
blower is energized. The integrated control module electron-
ic air cleaner terminal (EAC H) is energized with 115 volts
whenever the circulator blower is energized. This terminal
can also be used to provide 115 volt power to a humidier
transformer. The remaining primary transformer wire would
be connected to the Line N on the control board.
HIGH VOLTAGE !
T
O
AVOID
PERSONAL
INJURY
OR
DEATH
DUE
TO
ELECTRICAL
SHOCK
,
DISCONNECT
ELECTRICAL
POWER
BEFORE
SERVICING
OR
CHANGING
ANY
ELECTRICAL
WIRING
.
WARNING
W2 W/W1 R G C Y/Y1 Y2
115 VAC EAC
115 VAC HUM
24 Volt Humidifier ConneCtion
The furnace integrated control module is equipped with
a low voltage terminal for providing power to an optional
eld-supplied 24 volt humidier. The 24V HUM terminal is
energized any time the draft inducer is powered. See con-
nection diagram below.
Note: This is a 24 volt circuit only, the common connection
must be on C terminal of the low voltage terminal strip (where
thermostat wires are connected). Wiring for this circuit must
NOT be connected to the line N location where line voltage
neutral wires are connected.
W2 W/W1 R G C Y/Y1 Y2
24V HUM
Terminal is
energized when
pressure switch
is closed
24 VOLT HUM.
& HUMIDISTAT
Accessories - Accessories Wiring
Gas Supply and Piping
T
O
AVOID
POSSIBLE
UNSATISFACTORY
OPERATION
OF
EQUIPMENT
DAMAGE
DUE
TO
UNDERFIRING
OR
EQUIPMENT
,
USE
THE
PROPER
SIZE
OF
NATURAL
/
PROPANE
GAS
PIPING
NEEDED
WHEN
RUNNING
PIPE
FROM
THE
METER
/
TANK
TO
THE
FURNACE
.
WARNING
Natural Gas Minimum: 4.5" w.c. Maximum: 10.0" w.c.
Propane Gas Minimum: 11.0" w.c. Maximum: 13.0" w.c.
INLET GAS SUPPLY PRESSURE
The furnace rating plate includes the approved furnace gas
input rating and gas types. The furnace must be equipped
to operate on the type of gas applied. This includes any con-
version kits required for alternate fuels and/or high altitude.
Inlet gas supply pressures must be maintained within the
ranges specied in the adjacent table. The supply pressure
must be constant and available with all other household gas
red appliances operating. The minimum gas supply pres-
sure must be maintained to prevent unreliable ignition. The
maximum must not be exceeded to prevent unit overring.
High Altitude Derate
When this furnace is installed at high altitude, the appropriate
High Altitude orice kit must be applied. This is required due
to the natural reduction in the density of both the gas fuel
and combustion air as altitude increases. The kit will provide
the proper design certied input rate within the specied
altitude range.
High altitude kits are purchased according to the installation
altitude and usage of either natural or propane gas. Consult
the furnace Specication Sheet for appropriate kits.
27
Do not derate the furnace by adjusting the manifold pressure
to a lower pressure than specied on the furnace rating plate.
The combination of the lower air density and a lower manifold
pressure will prohibit the burner orice from drawing the prop-
er amount of air into the burner. This may cause incomplete
combustion, ashback, and possible yellow tipping.
In some areas the gas supplier may articially derate the gas
in an eort to compensate for the eects of altitude. If the
gas is articially derated, the appropriate orice size must be
determined based upon the BTU/ft
3
content of the derated
gas and the altitude. Refer to the National Fuel Gas Code,
NFPA 54/ANSI Z223.1, and information provided by the gas
supplier to determine the proper orice size.
A dierent pressure switch may be required at high altitude
regardless of the BTU/ft
3
content of the fuel used. Consult
the furnace Specication Sheet for pressure switch.
WARNING
P
OSSIBLE
PROPERTY
DAMAGE
,
PERSONAL
INJURY
OR
DEATH
MAY
OCCUR
IF
THE
CORRECT
CONVERSION
KITS
ARE
NOT
INSTALLED
. T
HE
APPROPRIATE
KITS
MUST
BE
APPLIED
TO
ENSURE
SAFE
AND
PROPER
FURNACE
OPERATION
. A
LL
CONVERSIONS
MUST
BE
PERFORMED
BY
A
QUALIFIED
INSTALLER
OR
SERVICE
AGENCY
.
Propane Gas Conversion
This unit is congured for natural gas, but may be converted
for use with L.P. gas. Refer to the section on PROPANE GAS/
HIGH ALTITUDE INSTALLATIONS for L.P. kit selection.
When converting to LP gas, it is recommended that an
LPLP0* kit also be installed. The use of this kit will prevent
the furnace from ring when the LP gas supply pressure is
too low to support proper combustion.
Consult the furnace Specication Sheet for a listing of appro-
priate kits. The indicated kits must be used to insure safe and
proper furnace operation. All conversions must be performed
by a qualied installer, or service agency.
CAUTION
T
O
PREVENT
UNRELIABLE
OPERATION
OR
EQUIPMENT
DAMAGE
,
THE
INLET
GAS
SUPPLY
PRESSURE
MUST
BE
AS
SPECIFIED
ON
THE
UNIT
RATING
PLATE
WITH
ALL
OTHER
HOUSEHOLD
GAS
FIRED
APPLIANCES
OPERATING
.
Gas Valve
This unit is equipped with a 24 volt gas valve controlled
during furnace operation by the integrated control module.
As shipped, the valve is congured for natural gas. The valve
is eld convertible for use with propane gas by replacing the
regulator spring with a propane gas spring from an appro-
priate manufacturer’s propane gas conversion kit. Taps for
measuring the gas supply pressure and manifold pressure
are provided on the valve.
The gas valve has a manual ON/OFF control located on the
valve itself. This control may be set only to the “ON” or “OFF”
position. Refer to the lighting instructions label or Startup
Procedure & Adjustment for use of this control during start
up and shut down periods.
Gas Piping Connections
The gas piping supplying the furnace must be properly sized
based on the gas ow required, specic gravity of the gas,
and length of the run. The gas line installation must comply
with local codes, or in their absence, with the latest edition of
the National Fuel Gas Code, NFPA 54/ANSI Z223.1.
Natural Gas Capacity of Pipe
In Cubic Feet of Gas Per Hour (CFH)
Length of Nominal Black Pipe Size
Pipe in Feet 1/2" 3/4" 1" 1 1/4" 1 1/2"
10 132 278 520 1050 1600
20 92 190 350 730 1100
30 73 152 285 590 980
40 63 130 245 500 760
50 56 115 215 440 670
60 50 105 195 400 610
70 46 96 180 370 560
80 43 90 170 350 530
90 40 84 160 320 490
100 38 79 150 305 460
(Pressure 0.5 psig or less and pressure drop of 0.3" W.C.; Based on
0.60 Specific Gravity Gas)
CFH =
BTUH Furnace Input
Heating Value of Gas (BTU/Cubic Foot)
To connect the furnace to the building’s gas piping, the install-
er must supply a ground joint union, drip leg, manual shuto
valve, and line and ttings to connect to gas valve. In some
cases, the installer may also need to supply a transition piece
from 1/2” pipe to a larger pipe size.
The following stipulations apply when connecting gas piping.
Refer to Gas Piping Connections gure for typical gas line
connections to the furnace.
• Gas piping must be supported external to the furnace
cabinet so that the weight of the gas line does not
distort the burner rack, manifold or gas valve.
• Use black iron or steel pipe and ttings for building
piping. Where possible, use new pipe that is properly
chamfered, reamed, and free of burrs and chips. If old
pipe is used, be sure it is clean and free of rust, scale,
burrs, chips, and old pipe joint compound.
• Use pipe joint compound on male threads ONLY.
Always use pipe joint compound (pipe dope) that
is APPROVED FOR ALL GASES. DO NOT apply
compound to the rst two threads.
• Use ground joint unions.
• Install a drip leg to trap dirt and moisture before it can
enter the gas valve. The drip leg must be a minimum
of three inches long.
• Install a 1/8” NPT pipe plug tting, accessible for test
gage connection, immediately upstream of the gas
supply connection to the furnace.
28
• Always use a back-up wrench when making the
connection to the gas valve to keep it from turning.
The orientation of the gas valve on the manifold must
be maintained as shipped from the factory. Maximum
torque for the gas valve connection is 375 in-lbs;
excessive over-tightening may damage the gas valve.
• Install a manual shuto valve between the gas meter
and unit within six feet of the unit. If a union is installed,
the union must be downstream of the manual shuto
valve, between the shuto valve and the furnace.
• Tighten all joints securely.
• Connect the furnace to the building piping by one of
the following methods:
– Rigid metallic pipe and ttings.
– Semi-rigid metallic tubing and metallic ttings.
Aluminum alloy tubing must not be used in exterior
locations. In order to seal the grommet cabinet
penetration, rigid pipe must be used to reach the
outside of the cabinet. A semi-rigid connector to
the gas piping may be used from there.
• Use listed gas appliance connectors in accordance
with their instructions. Connectors must be fully in
the same room as the furnace.
• Protect connectors and semirigid tubing against
physical and thermal damage when installed. Ensure
aluminum-alloy tubing and connectors are coated to
protect against external corrosion when in contact
with masonry, plaster, or insulation, or subjected to
repeated wetting by liquids such as water (except rain
water), detergents, or sewage.
The gas piping may enter the left or right side of the furnace
cabinet. The installer must supply rigid pipe long enough to
reach the outside of the cabinet to seal the grommet cabinet
penetration. A semi-rigid connector to the gas piping can be
used outside the cabinet per local codes. 1/2” NPT pipe and
ttings are required. For models with an “L” shaped mani-
fold, a 4 1/2” long nipple is required. For models with a hook
shaped manifold, a 2” long nipple is required.
A semi-rigid connector to the gas piping can be used outside
the cabinet per local codes. From the elbow, the length of pipe
and the ttings required will vary by the side chosen, location
of union and cabinet width. The union may be placed inside
or outside of the cabinet.\
Alternate
Gas Line
Location
Gas Valve
Burners
Manual Shut Off Valve
(upstream from
ground joint
pipe union)
Drip Leg
Grommet
in Standard
Gas Line
Hole
*Ground
Joint
Pipe
Union
*Ground
Joint
Pipe
Union
*NOTE: Union may be inside furnace cabinet where allowed by local codes.
Manifold
UPFLOW
Figure 39
Gas Connections
T
O
AVOID
THE
POSSIBILITY
OF
EXPLOSION
OR
FIRE
,
NEVER
USE
A
MATCH
OR
OPEN
FLAME
TO
TEST
FOR
LEAKS
.
WARNING
Gas Piping Checks
Before placing unit in operation, leak test the unit and gas
connections.
Check for leaks using an approved chloride-free soap and
water solution, an electronic combustible gas detector, or
other approved testing methods.
NOTE: Never exceed specied pressures for testing. Higher
pressure may damage the gas valve and cause subsequent
overring, resulting in heat exchanger failure.
Disconnect this unit and shuto valve from the gas supply
piping system before pressure testing the supply piping sys-
tem with pressures in excess of 1/2 psig (3.48 kPa).
Isolate this unit from the gas supply piping system by closing
its external manual gas shuto valve before pressure testing
supply piping system with test pressures equal to or less than
1/2 psig (3.48 kPA).
Propane Gas Tanks and Piping
I
F
THE
GAS
FURNACE
IS
INSTALLED
IN
A
BASEMENT
,
AN
EXCAVATED
AREA
OR
CONFINED
SPACE
,
IT
IS
STRONGLY
RECOMMENDED
TO
CONTACT
A
PROPANE
SUPPLIER
TO
INSTALL
A
GAS
DETECTING
WARNING
DEVICE
IN
CASE
OF
A
GAS
LEAK
.
S
INCE
PROPANE
GAS
IS
HEAVIER
THAN
AIR
,
ANY
LEAKING
GAS
CAN
SETTLE
IN
ANY
LOW
AREAS
OR
CONFINED
SPACES
.
P
ROPANE
GAS
ODORANT
MAY
FADE
,
MAKING
THE
GAS
UNDETECTABLE
EXCEPT
WITH
A
WARNING
DEVICE
.
•
•
WARNING
29
A gas detecting warning system is the only reliable way to de-
tect a propane gas leak. Rust can reduce the level of odorant
in propane gas. Do not rely on your sense of smell. Contact
a local propane gas supplier about installing a gas detecting
warning system. If the presence of gas is suspected, follow
the instructions listed in the Safety Considerations section
of this manual.
All propane gas equipment must conform to the safety
standards of the National Board of Fire Underwriters, NBFU
Manual 58.
For satisfactory operation, propane gas pressure must be
10” WC at the furnace manifold with all gas appli ances in
operation. Maintaining proper gas pressure depends on
three main factors:
1. Vaporization rate, depending on temperature of the
liquid, and “wetted surface” area of the con tainer or
containers.
2. Proper pressure regulation. (Two-stage regulation is
recommended for both cost and eciency).
3. Pressure drop in lines between regulators, and
between second stage regulator and the appliance.
Pipe size will depend on length of pipe run and total
load of all appliances.
Complete information regarding tank sizing for vaporiza-
tion, recommended regulator settings, and pipe sizing is
available from most regulator manufacturers and propane
gas suppliers.
Since propane gas will quickly dissolve white lead and most
standard com mercial compounds, special pipe dope must
be used. Always use a pipe thread sealant approved for all
gases.
Refer to the this illustration for typical propane gas installa-
tions and piping.
200 PSIG
Maximum
5 to 15 PSIG
(20 PSIG Max.)
Continuous
11" W.C.
Second Stage
Regulator
First Stage
Regulator
Propane Gas Installation (Typ.)
Figure 40
Circulating Air & Filters
Duct work - Air Flow
Duct systems and register sizes must be properly designed
for the CFM and external static pressure rat ing of the furnace.
Design the ductwork in accor dance with the recommended
methods of “Air Conditioning Contractors of America” Manual D.
Install the duct system in accordance with Standards of the
National Board of Fire Underwriters for the Installation of Air
Conditioning, Warm Air Heating and Ventilating Systems.
Pamphlets No. 90A and 90B.
A closed return duct system must be used, with the return duct
connected to the furnace. NOTE: Ductwork must never be
attached to the back of the furnace. For upow installations
requiring 1800 CFM or more, use either two side returns or
bottom return or a combination of side /bottom. Flexible joints
may be used for supply and return con nections to reduce
noise transmission. To prevent the blower from inter fering
with combustion air or draft when a central return is used, a
connecting duct must be installed between the unit and the
utility room wall. Never use a room, closet, or alcove as a
return air chamber.
Checking Duct Static
Refer to your furnace rating plate for the maximum ESP
(external duct static) rating.
N
EVER
ALLOW
THE
PRODUCTS
OF
COMBUSTION
,
INCLUDING
CARBON
MONOXIDE
,
TO
ENTER
THE
RETURN
DUCT
WORK
OR
CIRCULATION
AIR
SUPPLY
.
WARNING
Total external static refers to everything external to the fur-
nace cabinet. Cooling coils, lters, ducts, grilles, registers
must all be considered when reading your total external static
pressure. The supply duct pressure must be read between
the furnace and the cooling coil.
This reading is usually taken by removing the “A” shaped
block o plate from the end on the coil; drilling a test hole
in it and reinstalling the block o plate. Take a duct static
reading at the test hole. Tape up the test hole after your test
is complete. The negative pressure must be read between
the lter and the furnace blower.
Too much external static pressure will result in insucient air
that can cause excessive temperature rise. This can cause
limit switch tripping and heat exchanger failure.
To determine total external duct static pressure, proceed as
follows;
1. With clean lters in the furnace, use a draft gauge (inclined
manometer) to measure the static pressure of the return
duct at the inlet of the furnace. (Negative Pressure)
2. Measure the static pressure of the supply duct. (Positive
Pressure)
3. The dierence between the two numbers is .4” w.c.
Example:
static reading from return duct = -.1” w.c.
static reading from supply duct = .3” w.c.
total external static pressure on this system = .4” w.c.
NOTE: Both readings may be taken simultaneously and read
directly on the manometer if so desired. If an air conditioner
coil or Electronic Air Cleaner is used in conjunction with the
furnace, the readings must also include theses components,
as shown in the following drawing.
4. Consult proper tables for the quantity of air.
30
If the total external static pressure exceeds the maximum
listed on the furnace rating plate, check for closed dampers,
registers, undersized and/or oversized poorly laid out duct
work.
The temperature rise of the furnace must be within the tem-
perature rise range listed on the furnace rating plate.
Checking Static Pressure
Figure 41
E
DGES
OF
SHEET
METAL
HOLES
MAY
BE
SHARP
. U
SE
GLOVES
AS
A
PRECAUTION
WHEN
REMOVING
SHEET
METAL
FROM
RETURN
AIR
OPENINGS
.
WARNING
Bottom Return Air Opening
[Upflow Models]
The bottom return air opening on upow models utilizes a
“lance and cut” method to remove sheet metal from the duct
opening in the base pan. To remove, simply press out the
lanced sections by hand to expose the metal strips retaining
the sheet metal over the duct opening. Using tin snips, cut
the metal strips and remove the sheet metal covering the
duct opening. In the corners of the opening, cut the sheet
metal along the scribe lines to free the duct anges. Using
the scribe line along the duct ange as a guide, unfold the
duct anges around the perimeter of the opening using a pair
of seamer pliers or seamer tongs.
NOTE: Airow area will be reduced by approximately 18% if
duct anges are not unfolded. This could cause performance
issues and noise issues.
When the furnace is used in connection with a cooling unit,
the furnace should be installed in parallel with or on the
upstream side of the cooling unit to avoid condensa tion in
the heating element. With a parallel ow arrange ment, the
dampers or other means used to control the ow of air must
be adequate to prevent chilled air from entering the furnace
and, if manually operated, must be equipped with means to
prevent operation of either unit unless the damper is in the
full heat or cool position.
When the furnace is installed without a cooling coil, it is rec-
ommended that a removable access panel be provided in the
outlet air duct. This opening shall be accessible when the
furnace is installed and shall be of such a size that the heat
exchanger can be viewed for visual light inspection or such
that a sampling probe can be inserted into the airstream.
The access panel must be made to prevent air leaks when
the furnace is in operation.
When the furnace is heating, the temperature of the return
air entering the furnace must be between 55°F and 100°F.
CUT FOUR CORNERS
AFTER REMOVING SHEET
METAL
CUT USING TIN SNIPS
PRESS OUT BY HAND
SCRIBE LINES OUTLINING
DUCT FLANGES
Duct Flange Cut Outs
Figure 42
Filters - Read This Section Before Installing
The Return Air Duct work
Filters must be used with this furnace. Discuss lter maintenance
with the building owner. Filters do not ship with this furnace, but
must be provided, sized and installed externally by the installer.
Filters must comply with UL900 or CAN/ULCS111 standards.
Damage or repairs due to the installation of the furnace
without lters is not covered under the warranty.
On upow units, guide dimples locate the side return cutout
locations. Use a straight edge to scribe lines connecting the dim-
ples. Cut out the opening on these lines. NOTE: An undersized
opening will cause reduced airow.
Refer to the following table to determine lter area require-
ments.
Upflow Models Minimum Recommended Filter Size
*M9C960303AN 1 - 16 X 25 Side or 1 - 14 X 24 Bottom Return
*M9C960403AN 1 - 16 X 25 Side or 1 - 14 X 24 Bottom Return
*M9C960603AN 1 - 16 X 25 Side or 14 X 24 Bottom Return
*M9C960603BN 1 - 16 X 25 Side or Bottom Return
*M9C960803BN 1 - 16 X 25 Side or Bottom Return
*M9C960804CN 1 - 16 X 25 Side or Bottom Return
*M9C961004CN 2 - 16 X 25 Side or 1 - 20 X 25 Bottom Return
*M9C961005CN 2 - 16 X 25 Side or 1 - 20 X 25 Bottom Return
*M9C961205DN 2 - 16 X 25 Side or 1 - 24 X 24 Bottom Return
Downflow Models
*C9C960403BN 2 - 10 X 20 or 1 - 14 X 25 Top Return
*C9C960603BN 2 - 10 X 20 or 1 - 14 X 25 Top Return
*C9C960803BN 2 - 14 X 20 or 1 - 16 X 25 Top Return
*C9C961005CN 2 - 14 X 20 or 1 - 20 X 25 Top Return
¹ = Use 2 - 16 X 25 filters and two side returns or 20 X 25 filter on bottom
return if furnace is connected to a cooling unit over 4 tons nominal capacity
Larger filters may be used, filters may also be centrally located
A combination of one side & bottom may be used instead of both sides
Change lters before occupants take ownership of a
new home!
31
Upright Installations
Depending on the installation and/or customer preference, dier-
ing lter arrangements can be applied. Filters can be installed
in the central return register or a side panel external lter rack
kit (upows). As an alternative a media air lter or electronic air
cleaner can be used as the requested lter. Consider installing
an air cleaner with deep-pleated media lter at the time of
furnace installation. A deep-pleated lter with a MERV rating
of 8 (minimum) will often provide better ltration to protect
equipment and the air distribution system than a standard 1”
lter and often has lower static pressure loss than a 1” lter.
Also a deep-pleated lter will typically require less frequent
replacement intervals. Avoid using highly restrictive 1” lters
which produce static pressure loss greater than .25” W.C. In
some installations the minimum lter size required will not
lend itself to a lter installation on the side of the furnace.
The installation of a centrally installed air cleaner cabinet
or a return duct lter installation may oer more practicality.
Clean Comfort™ brand MERV 11 air cleaners have 5¼”
media lters and are available in the following congura-
tions. Consult your distributor for information on our com-
plete line of IAQ Clean Comfort™ products.
The gure below shows possible lter locations.
Horizontal Installations
Filters must be installed in either the central return register or in
the return air duct work.
FILTER
AIR FLOW
CENTRAL
RETURN
GRILLE
FILTER
SIDE RETURN
EXTERNAL FILTER
RACK KIT
(EITHER SIDE)
Figure 43
Startup Procedure & Adjustment
Furnace must have a 115 VAC power supply properly con-
nected and grounded. Proper polarity must be maintained
for correct operation. In addition to the following start-up and
adjustment items, refer to further information in Operational
Checks section.
Furnace Cabinet
Check that all furnace cabinet sealing components are in
place (plugs, grommets, gaskets).
NOTE; If the furnace bottom panel has not been removed
for a return duct connection, all perforations must be sealed
with duct sealant compound or other suitable method to
prevent air leakage. For optimal performance verify that all
door gaskets are properly in place and replace as needed
to prevent air leakage.
Drain Trap Priming
The drain trap MUST be primed prior to furnace startup. To
prime, ll both sides of the drain trap with water. This ensures
proper furnace drainage upon startup and prohibits the
possibility of ue gases escaping through the drain system.
Furnace Operation
Purge gas lines of air prior to startup. Be sure not purge lines
into an enclosed burner compartment.
Check for leaks using an approved chloride-free soap and
water solution, an electronic combustible gas detector, or
other approved method. Verify that all required kits (propane
gas, high altitude, etc.) have been appropriately installed.
Furnace Startup
1. Close the manual gas shuto valve external to the
furnace.
2. Turn o the electrical power to the furnace.
3. Set the room thermostat to the lowest possible setting.
4. Remove the burner compartment door.
NOTE: This furnace is equipped with an ignition device
which automatically lights the burner. Do not try to light the
burner by hand.
5. Move the furnace gas valve manual control to the OFF
position.
6. Wait ve minutes then smell for gas. Be sure check
near the oor as some types of gas are heavier than
air.
7. If you smell gas after ve minutes, immediately follow
the Safety Considerations on page 2 of this manual.
If you do not smell gas after ve minutes, move the
furnace gas valve manual control to the ON position.
8. Replace the burner compartment door.
9. Open the manual gas shuto valve external to the
furnace.
10. Turn on the electrical power to the furnace.
11. Adjust the thermostat to a setting above room
temperature.
12. After the burners are lit, set the thermostat to desired
temperature.
Furnace Shutdown
1. Set the thermostat to the lowest setting.
The integrated control will close the gas valve and
extinguish ame. Following a 15 second delay, the
induced draft blower will be de-energized. The
circulator blower will shut o after the time delay
expires (selectable 90, 120, 150, 180 seconds).
2. Remove the burner compartment door and move the
furnace gas valve manual control to the OFF position.
3. Close the manual gas shuto valve external to the
furnace.
4. Replace the burner compartment door.
32
Gas Supply Pressure Measurement
Gas Pressure Test
The line pressure supplied to the gas valve must be within
the range specied below. The supply pressure can be mea-
sured at the gas valve inlet pressure tap or at a hose tting
installed in the gas piping drip leg. The supply pressure must
be measured with the burners operating. To measure the gas
supply pressure, use the following procedure.
1. Turn OFF gas to furnace at the manual gas shuto
valve external to the furnace.
2. Connect a calibrated water manometer (or appropriate
gas pressure gauge) at either the gas valve inlet
pressure tap or the gas piping drip leg. See White-
Rodgers 36J54 gas valve gure for location of inlet
pressure tap.
NOTE: If measuring gas pressure at the drip leg, a eld-
supplied hose barb tting must be installed prior to making
the hose connection. If using the inlet pressure tap on the
White-Rodgers 36J54 gas valve, then use the 36G/J Valve
Pressure Check Kit, Part No. 0151K00000S.
3. Turn ON the gas supply and operate the furnace and
all other gas consuming appliances on the same gas
supply line.
4. Measure furnace gas supply pressure with burners
firing. Supply pressure must be within the range
specied in the Inlet Gas Supply Pressure table.
If supply pressure diers from table, make the necessary
adjustments to pressure regulator, gas piping size, etc., and/
or consult with local gas utility.
5. Turn OFF gas to furnace at the manual shuto valve
and disconnect manometer. Reinstall plug before
turning on gas to furnace.
6. Turn OFF any unnecessary gas appliances stated in
step 3.
Gas Manifold Pressure Measurement and
Adjustment
T
O
PREVENT
UNRELIABLE
OPERATION
OR
EQUIPMENT
DAMAGE
,
THE
GAS
MANIFOLD
PRESSURE
MUST
BE
AS
SPECIFIED
ON
THE
UNIT
RATING
PLATE
. O
NLY
MINOR
ADJUSTMENTS
SHOULD
BE
MADE
BY
ADJUSTING
THE
GAS
VALVE
PRESSURE
REGULATOR
.
CAUTION
Only small variations in gas pressure should be made by
adjusting the gas valve pressure regulator. The manifold
pressure must be measured with the burners operating. To
measure and adjust the manifold pressure, use the following
procedure.
1. Turn OFF gas to furnace at the manual gas shuto
valve external to the furnace.
2. Turn o all electrical power to the system.
3. Outlet pressure tap connections:
White-Rodgers 36J54 valve: Back outlet pressure
test screw (inlet/outlet pressure tap) out one turn
(counterclockwise, not more than one turn).
4. Attach a hose and manometer to the outlet pressure
tap (White-Rodgers valve).
5. Turn ON the gas supply.
6. Turn on power and close thermostat “R” and “W1”
contacts to provide a call for low stage heat.
7. Measure the gas manifold pressure with burners ring.
Adjust manifold pressure using the Manifold Gas
Pressure table shown below.
Range Nominal
Natural Low Stage 1.6 - 2.2" w .c. 1.9" w .c.
High Stage 3.2 - 3.8" w .c. 3.5" w .c.
Propane Low Stage 5.7 - 6.3" w .c. 6.0" w .c.
High Stage
9.7 - 10.3" w .c.
10.0" w .c.
Manifold Gas Pressure
Gas
8. Remove regulator cover screw from the low (LO)
outlet pressure regulator adjust tower and turn screw
clockwise to increase pressure or counterclockwise to
decrease pressure. Replace regulator cover screw.
9. Close thermostat “R”, “W1” and “W2” contacts to
provide a call for high stage heat.
10. Remove regulator cover screw from the high (HI)
outlet pressure regulator adjust tower and turn screw
clockwise to increase pressure or counterclockwise to
decrease pressure. Replace regulator cover screw.
11. Turn o all electrical power and gas supply to the
system.
12. Remove the manometer hose from the hose barb tting
or outlet pressure tap.
13. Replace outlet pressure tap:
White-Rodgers 36J54 valve: Turn outlet pressure
test screw in to seal pressure port (clockwise, 7 in-lb
minimum).
14. Turn on electrical power and gas supply to the system.
15. Close thermostat contacts “R” and “W1/W2” to
energize the valve.
Using a leak detection solution or soap suds, check for
leaks at outlet pressure tap plug (Honeywell valve) or screw
(White-Rodgers valve). Bubbles forming indicate a leak.
SHUT OFF GAS AND REPAIR ALL LEAKS IMMEDIATELY!
NOTE: For gas to gas conversion, consult your dealer for
appropriate conversion.
INLET
OUTLET
Gas Valve On/Off
Selector Switch
White-Rodgers Model 36J54 (Two-Stage)
33
Gas Input Rate Measurement (Natural Gas
Only)
INLET GAS SUPPLY PRESSURE
Natural Gas Minimum: 4.5” w.c. Maximum: 10.0” w.c.
Propane Gas Minimum: 11.0” w.c. Maximum: 13.0” w.c.
The actual gas input rate to the furnace must never be greater
than that specied on the unit rating plate. To measure natural
gas input using the gas meter, use the following procedure.
1. Turn OFF the gas supply to all other gas-burning
appliances except the furnace.
2. While the furnace is operating at high re rate, time
and record one complete revolution of the gas meter
dial measuring the smallest quantity, usually the dial
that indicates 1/2 cu. ft. per revolution. You will use
this number to calculate the quantity of gas in cubic
ft. if the furnace would consume if it ran steadily for
one hour (3600 seconds).
3. If the 1/2 cu. ft. dial was used, multiply your number x 2.
EXAMPLE: If it took 23 seconds to complete one
revolution of the 1/2 ft. dial (23 x 2 = 46).
This tells us that at this rate, it would take 46 seconds to
consume one cu. ft. of gas. 3600 / 46 = 78.
This tells us that in one hour, the furnace would consume
78 cu. ft. of gas.
The typical value range for 1 cu. ft. of natural gas is around
1000 BTU. Check with your gas utility, if possible. In this
example, the furnace is consuming 78,000 BTUH.
NOTE: The nal manifold pressure cannot vary
by more than ± 0.3” w.c. for Natural and + 0.5” for
LP from the specied setting. Consult your local
gas supplier if additional input rate adjustment is
required.
4. Turn ON gas to and relight all other appliances
turned o in step 1. Be certain that all appliances
are functioning properly and that all pilot burners are
operating.
Temperature Rise
Temperature rise must be within the range specied on the
unit rating plate. An incorrect temperature rise may result
in condensing in or overheating of the heat exchanger. An
airow and temperature rise table is provided in the Speci-
cation Sheet applicable to your model. Determine and adjust
temperature rise as follows:
1. Operate furnace with burners ring for approximately
ten minutes. Ensure all registers are open and all
duct dampers are in their nal (fully or partially open)
position.
2. Place thermometers in the return and supply ducts
as close to the furnace as possible. Thermometers
must not be inuenced by radiant heat by being able
to “see” the heat exchanger.
3. Subtract the return air temperature from the supply
air temperature to determine the air temperature rise.
Allow adequate time for thermometer readings to
stabilize.
4. Adjust temperature rise by adjusting the circulator
blower speed. Increase blower speed to reduce
temperature rise. Decrease blower speed to increase
temperature rise. Refer to Startup Procedure and
Adjustment - Circulator Blower Speeds for speed
changing details.
SUPPLY
AIR
RETURN
AIR
Temperature Rise Measurement
Figure 45
T
O
AVOID
PERSONAL
INJURY
OR
DEATH
DUE
TO
ELECTRICAL
SHOCK
,
TURN
OFF
POWER
TO
THE
FURNACE
BEFORE
CHANGING
SPEED
TAPS
.
WARNING
Blower Heat Off Delay Timings
The integrated control module provides a selectable heat o
delay function. The heat o delay period may be set to 90,
120, 150, 180 seconds. The delay is factory shipped at 150
seconds but may be changed to suit the installation require-
ments and/or homeowner preference.
34
Airflow Table
Note: ^Default speed
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
CFM CFM CFM CFM CFM CFM CFM CFM
F01
727 677 623 565 510 455 403 351
F02
923 882 841 798 752 704 660 614
F03 632 574 510 448 388 332 277 234
F04^
878 839 797 751 701 653 607 561
F05
1106 1076 1044 1010 974 939 899 860
F06 1188 1156 1123 1091 1062 1029 998 964
F07
1237 1205 1174 1145 1115 1081 1050 1016
F08
1281 1252 1222 1195 1163 1134 1104 1071
F09 1382 1354 1327 1302 1276 1246 1219 1190
F01 1167 1118 1069 1022 974 928 877 833
F02 1332 1289 1245 1200 1160 1120 1081 1036
F03
680 609 532 460 397 337 252 201
F04^ 903 839 783 719 661 601 546 497
F05 1248 1204 1159 1113 1071 1028 983 943
F06 963 907 852 803 745 689 639 587
F07 1393 1348 1309 1267 1230 1189 1152 1116
F08 1450 1407 1366 1330 1290 1251 1221 1186
F09 1468 1436 1393 1359 1323 1285 1248 1210
F01 1167 1124 1087 1040 995 954 916 869
F02 1317 1277 1240 1201 1161 1122 1081 1045
F03 733 669 606 543 482 424 372 300
F04^ 1217 1174 1130 1086 1045 1003 962 925
F05 1300 1263 1225 1186 1142 1099 1062 1023
F06 919 872 820 764 711 658 605 553
F07 1126 1085 1042 998 953 910 866 824
F08 1375 1341 1301 1264 1226 1189 1154
1118
F09 1440 1402 1366 1330 1295
1260 1224 1187
F01 1366 1307 1248 1188 1130
1069 1007 938
F02
1833
1785
1736 1688
1640 1593
1543 1497
F03 1295 1230 1168 1105 1044 981 911 843
F04^ 1634 1578 1525 1471 1416 1363 1311 1265
F05 2028 1994 1937 1899 1863 1814 1769 1724
F06 1773 1721 1671
1621 1571 1521 1470 1421
F07 1908 1860 1813 1766 1720 1672 1624 1578
F08 1965 1919 1873 1829
1783 1736 1688
1643
F09 2096 2053 2014 1973 1931 1890 1849 1803
THERMOSTAT
CALL
LOW STAGE COOLING AIFLOW
MODEL
Y/Y1
*C9C960403BN
*C9C960603BN
*C9C960803BN
*C9C961005CN
TAP #
EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN)
Y/Y1
Y/Y1
Y/Y1
0.1 0.2
0.3
0.4 0.5
0.6 0.7 0.8
CFM CFM CFM
CFM
CFM CFM CFM CFM
F01 727 677 623
565 510
455
403 351
F02 923 882
841
798 752
704 660 614
F03 632 574 510 448 388 332 277 234
F04 878 839 797 751 701 653 607 561
F05^ 1106 1076 1044 1010 974 939 899 860
F06 1188 1156 1123 1091 1062 1029 998 964
F07 1237 1205 1174 1145 1115 1081 1050 1016
F08 1281 1252 1222 1195 1163 1134 1104 1071
F09
1382 1354 1327 1302 1276 1246
1219 1190
F01 1167 1118 1069 1022 974 928 877 833
F02 1332 1289 1245 1200 1160 1120 1081 1036
F03 680 609 532 460 397 337 252 201
F04 903 839 783 719 661 601 546 497
F05^ 1248 1204 1159 1113 1071 1028 983 943
F06 963 907 852 803 745 689 639 587
F07 1393 1348 1309 1267 1230 1189 1152 1116
F08 1450 1407 1366 1330 1290 1251 1221 1186
F09 1468 1436 1393 1359 1323 1285 1248 1210
F01 1167 1124 1087 1040 995 954 916 869
F02 1317 1277 1240 1201 1161 1122 1081 1045
F03 733 669 606 543 482 424 372 300
F04 1217 1174 1130 1086 1045 1003 962 925
F05^ 1300 1263 1225 1186 1142 1099 1062 1023
F06 919 872 820 764 711 658 605 553
F07 1126 1085 1042 998 953 910 866 824
F08 1375 1341 1301 1264 1226 1189 1154 1118
F09 1440 1402
1366 1330 1295 1260 1224 1187
F01 1366 1307 1248 1188 1130 1069 1007 938
F02 1833 1785 1736 1688 1640 1593 1543 1497
F03 1295 1230 1168
1105 1044 981 911 843
F04 1634 1578 1525 1471 1416 1363 1311 1265
F05^ 2028 1994 1937 1899
1863 1814 1769 1724
F06 1773 1721 1671 1621 1571 1521 1470 1421
F07 1908 1860 1813 1766 1720 1672 1624 1578
F08 1965
1919
1873 1829 1783 1736 1688 1643
F09 2096 2053 2014 1973 1931 1890 1849 1803
*C9C960403BN
Y2
*C9C960603BN
Y2
HIGH STAGE COOLING AIFLOW
TAP #
EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN)
*C9C961005CN
Y2
MODEL
THERMOSTAT
CALL
*C9C960803BN
Y2
0.1 0.2
0.3 0.4
0.5
0.6 0.7 0.8
CFM CFM CFM
CFM CFM CFM CFM CFM
F01 727 677
623
565 510
455 403
351
F02 923 882
841 798
752 704
660 614
F03 632
574 510 448 388 332 277
234
F04 878 839 797 751 701 653 607
561
F05 1106 1076 1044 1010 974 939 899
860
F06
1188 1156 1123
1091 1062 1029 998 964
F07
1237 1205 1174 1145 1115 1081
1050 1016
F08 1281 1252 1222 1195 1163 1134 1104 1071
F09 1382 1354 1327 1302 1276 1246 1219 1190
F01 1167 1118 1069 1022 974 928
877 833
F02 1332 1289 1245
1200 1160 1120 1081 1036
F03 680
609 532 460 397 337 252
201
F04 903 839 783 719 661 601 546
497
F05 1248 1204 1159 1113 1071 1028 983
943
F06 963 907 852 803 745 689 639 587
F07 1393 1348 1309 1267 1230 1189 1152 1116
F08 1450 1407 1366 1330 1290 1251 1221
1186
F09
1468 1436 1393
1359 1323 1285
1248 1210
F01
1167 1124 1087
1040 995 954 916 869
F02 1317 1277 1240
1201 1161 1122
1081 1045
F03 733 669 606 543 482 424
372 300
F04 1217 1174 1130 1086 1045 1003 962 925
F05 1300 1263 1225 1186
1142 1099 1062
1023
F06 919 872 820 764 711 658 605 553
F07 1126 1085 1042
998 953 910 866 824
F08 1375 1341 1301 1264 1226 1189 1154 1118
F09 1440 1402
1366 1330 1295
1260 1224 1187
F01 1366 1307 1248 1188 1130 1069 1007 938
F02 1833 1785 1736 1688 1640 1593
1543 1497
F03 1295 1230 1168 1105 1044 981 911 843
F04 1634 1578 1525
1471
1416 1363 1311 1265
F05 2028 1994 1937
1899
1863 1814 1769 1724
F06 1773 1721 1671 1621 1571 1521 1470 1421
F07 1908 1860 1813 1766 1720 1672 1624 1578
F08 1965
1919 1873 1829 1783 1736
1688 1643
F09
2096 2053 2014 1973 1931 1890 1849 1803
MODEL
THERMOSTAT
CALL
TAP #
EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN)
*C9C960403BN
G
*C9C960603BN
G
*C9C960803BN
G
*C9C961005CN
G
CIRCULATION AIRFLOW
35
Airflow Table
Note: ^Default speed
^^ Not recommended for heating
0.6 0.7 0.8
CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM
F01^ 727 34 677 37 623 40 565 44 510 49 455 403 351
F03^^ 632 N/A 574 N/A 510 N/A 448 N/A 388 N/A 332 277 234
F04 878 28 839 30 797 31 751 33 701 36 653 607 561
F02^ 923 39 882 40 841 42 798 45 752 47 704 660 614
F04 878 41 839 42 797 45 751 47 701 51 653 607 561
F05 1106 32 1076 33 1044 34 1010 35 974 37 939 899 860
F01^ 1167 32 1118 33 1069 35 1022 37 974 38 928 877 833
F03^^ 680 N/A 609 N/A 532 N/A 460 N/A 397 N/A 337 252 201
F04^^ 903 N/A 839 N/A 783 N/A 719 N/A 661 N/A 601 546 497
F02^ 1332 40 1289 41 1245 43 1200 44 1160 46 1120 1081 1036
F04^^ 903 N/A 839 N/A 783 N/A 719 N/A 661 N/A 601 546 497
F05 1248 43 1204 44 1159 46 1113 48 1071 50 1028 983 943
F01^ 1167 43 1124 44 1087 46 1040 48 995 50 954 916 869
F03^^ 733 N/A 669 N/A 606 N/A 543 N/A 482 N/A 424 372 300
F04 1217 41 1174 42 1130 44 1086 46 1045 48 1003 962 925
F02^ 1317 54 1277 56 1240 57 1201 59 1161 61 1122 1081 1045
F04 1217 58 1174 61 1130 63 1086 65 1045 68 1003 962 925
F05 1300 55 1263 56 1225 58 1186 60 1142 62 1099 1062 1023
F01^ 1366 46 1307 48 1248 50 1188 52 1130 55 1069 1007 938
F03 1295 48 1230 51 1168 53 1105 56 1044 58 981 911 843
F04^^ 1634 N/A 1578 N/A 1525 N/A 1471 N/A 1416 N/A 1363 1311 1265
F02^ 1833 48 1785 50 1736 51 1688 53 1640 54 1593 1543 1497
F04 1634 54 1578 56 1525 58 1471 60 1416 62 1363 1311 1265
F05 2028 44 1994 45 1937 46 1899 47 1863 48 1814 1769 1724
HEATING AIFLOW
*C9C961005CN
W/W1
30-60
35-65
W2
*C9C960803BN
W/W1
30-60
40-70
W2
*C9C960603BN
W/W1
20-50
25-55
W2
*C9C960403BN
W/W1
20-50
25-55
W2
TEMP RANGE
HIGH
0.1
0.2
0.3
0.4
0.5
MODEL
THERMOSTAT
CALL
TAP #
EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN)
TEMP RANGE
LOW
36
Airflow Table
Note: ^Default speed
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
CFM CFM CFM CFM CFM CFM CFM CFM
F01
753 708 663 616 568 513 470 423
F02
915 883 845 809 773 730 690 650
F03
529 518 461 394 343 288 223 N/A
F04^
880 843 807 768 723 683 643 590
F05
1055 1022 990 959 930 891 858 825
F06
1101 1072 1040 1010 980 949 918 881
F07
1190 1162 1134 1104 1077 1042 1013 982
F08
1183 1157 1130 1103 1077 1047 1018 988
F09
1229 1206 1178 1153 1128 1100 1070 1042
F01
733 691 650 602 553 498 448 402
F02
1051 1024 996 966 935 907 868 836
F03
665 620 570 517 462 407 359 309
F04^
915 881 846 814 780 737 695 652
F05
1138 1114 1092 1064 1035 1006 977 947
F06
887 855 823 790 751 705 666 608
F07
1189 1163 1138 1111 1085 1059 1032 1001
F08
1266 1243 1218 1197 1172 1148 1123 1099
F09
1342 1324 1305 1280 1263 1239 1216 1193
F01
900 867 830 798 758 718 682 645
F02
1292 1272 1248 1227 1206 1184 1162 1137
F03
688 649 603 551 499 447 405 359
F04^
866 830 797 759 717 675 634 591
F05
1223 1195 1176 1149 1124 1101 1074 1047
F06
1037 1004 975 950 921 886 853 823
F07
1079 1053 1025 1000 970 941 911 873
F08
1128 1099 1075 1050 1022 993 965 937
F09
1171 1148 1124 1096 1070 1045 1017 988
F01
914 864 815 762 704 654 604 560
F02
1121 1083 1041 996 953 906 861 818
F03
758 696 636 572 512 460 412 N/A
F04^
960 917 864 812 764 708 661 614
F05
1164 1123 1084 1042 1003 960 920 871
F06
1219 1180 1141 1102 1062 1020 978 940
F07
1273 1240 1207 1171 1128 1089 1051 1012
F08
1307 1270 1235 1198 1160 1122 1083 1043
F09 1427 1390 1362 1327 1297 1260 1224 1193
F01 1205 1169 1131 1091 1053 1014 974 934
F02 1415 1385 1355 1322 1291 1255 1219 1186
F03 696 635 568 500 442 390 336 255
F04^ 1152 1112 1076 1035 996 954 916 868
F05 1321 1287 1251 1217 1181 1146 1112 1072
F06 901 851 801 746 690 638 587 543
F07 1112 1076 1032 992 949 905 858 819
F08 1290 1252 1215 1182 1143 1107 1071 1032
F09 1471 1440 1409 1377 1347 1314 1283 1247
F01 1289 1234 1180 1122 1058 991 917 840
F02 1836 1784 1741 1703 1664 1628 1585 1537
F03 1297 1246 1199 1142 1083 1020 949 872
F04^ 1194 1137 1079 1014 948 873 792 712
F05 1748 1696 1650 1612 1574 1526 1478 1428
F06 1451 1399 1354 1309 1256 1200 1142 1077
F07 1587 1534 1489 1445 1406 1354 1298 1244
F08 1683 1633 1589 1546 1502 1460 1406 1355
F09 1919 1890 1846 1807 1771 1735 1694 1650
F01 1475 1421 1369 1314 1260 1207 1152 1097
F02 1791 1741 1699 1652 1609 1561 1513 1465
F03 924 846 767 684 606 529 463 398
F04^ 1259 1197 1138 1074 1015 947 885 821
F05 1710 1660 1613 1583 1517 1470 1421 1374
F06 1592 1536 1486 1436 1383 1331 1281 1233
F07 1627 1574 1524 1474 1423 1370 1320 1271
F08 1921 1879 1840 1791 1751 1705 1656 1610
F09 2026 1981 1929 1901 1858 1819 1773 1733
F01 1259 1197 1138 1074 1015 947 885 821
F02 1791 1741 1699 1652 1609 1561 1513 1465
F03 1176 1108 1044 980 913 845 779 718
F04^ 1347 1286 1231 1172 1115 1055 995 933
F05 1921 1879 1840 1791 1751 1705 1656 1610
F06 1446 1404 1335 1280 1226 1171 1117 1062
F07 1618 1567 1510 1460 1413 1364 1312 1262
F08 2009 1964 1918 1886 1852 1811 1759 1722
F09 2161 2122 2084 2048 2010 1973 1940 1914
F01 1766 1712 1666 1612 1558 1506 1450 1395
F02 2205 2157 2110 2064 2021 1974 1925 1879
F03 1118 1035 952 860 750 663 590 519
F04^ 1684 1620 1561 1499 1438 1378 1318 1259
F05 2031 1981 1933 1901 1850 1799 1750 1702
F06 1220 1145 1070 995 952 907 811 725
F07 1357 1311 1243
1175 1107 1021 932 861
F08 1906 1877 1828 1778 1726 1674 1622 1568
F09 2454 2396 2347 2296 2250 2202 2157 2113
LOW STAGE COOLING AIFLOW
*M9C960403AN
Y/Y1
*M9C960603AN
Y/Y1
*M9C960603BN
Y/Y1
MODEL
THERMOSTAT
CALL
TAP #
EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN)
*M9C960303AN
Y/Y1
*M9C960803BN
Y/Y1
*M9C960804CN
Y/Y1
*M9C961004CN
*M9C961005CN
*M9C961205DN
Y/Y1
Y/Y1
Y/Y1
HIGH STAGE COOLING AIFLOW
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
CFM CFM CFM CFM CFM CFM CFM CFM
F01 753 708 663 616 568 513 470 423
F02 915 883 845 809 773 730 690 650
F03 529 518 461 394 343 288 223 N/A
F04 880 843 807 768 723 683 643 590
F05^ 1055 1022 990 959 930 891 858 825
F06 1101 1072 1040 1010 980 949 918 881
F07 1190 1162 1134 1104 1077 1042 1013 982
F08 1183 1157 1130 1103 1077 1047 1018 988
F09 1229 1206 1178 1153 1128 1100 1070 1042
F01 733 691 650 602 553 498 448 402
F02 1051 1024 996 966 935 907 868 836
F03 665 620 570 517 462 407 359 309
F04 915 881 846 814 780 737 695 652
F05^ 1138 1114 1092 1064 1035 1006 977 947
F06 887 855 823 790 751 705 666 608
F07 1189 1163 1138 1111 1085 1059 1032 1001
F08 1266 1243 1218 1197 1172 1148 1123 1099
F09 1342 1324 1305 1280 1263 1239 1216 1193
F01 900 867 830 798 758 718 682 645
F02 1292 1272 1248 1227 1206 1184 1162 1137
F03 688 649 603 551 499 447 405 359
F04 866 830 797 759 717 675 634 591
F05^ 1223 1195 1176 1149 1124 1101 1074 1047
F06 1037 1004 975 950 921 886 853 823
F07 1079 1053 1025 1000 970 941 911 873
F08 1128 1099 1075 1050 1022 993 965 937
F09 1171 1148 1124 1096 1070 1045 1017 988
F01 914 864 815 762 704 654 604 560
F02 1121 1083 1041 996 953 906 861 818
F03 758 696 636 572 512 460 412 N/A
F04 960 917 864 812 764 708 661 614
F05^ 1164 1123 1084 1042 1003 960 920 871
F06 1219 1180 1141 1102 1062 1020 978 940
F07 1273 1240 1207 1171 1128 1089 1051 1012
F08 1307 1270 1235 1198 1160 1122 1083 1043
F09 1427 1390 1362 1327 1297 1260 1224 1193
F01 1205 1169 1131 1091 1053 1014 974 934
F02 1415 1385 1355 1322 1291 1255 1219 1186
F03 696 635 568 500 442 390 336 255
F04 1152 1112 1076 1035 996 954 916 868
F05^ 1321 1287 1251 1217 1181 1146 1112 1072
F06 901 851 801 746 690 638 587 543
F07 1112 1076 1032 992
949 905 858 819
F08 1290 1252 1215 1182 1143 1107 1071 1032
F09 1471 1440 1409 1377 1347 1314 1283 1247
F01 1289 1234 1180 1122 1058 991 917 840
F02 1836 1784 1741 1703 1664 1628 1585 1537
F03 1297 1246 1199 1142 1083 1020 949 872
F04 1194 1137 1079 1014 948 873 792 712
F05^ 1748 1696 1650 1612 1574 1526 1478 1428
F06 1451 1399 1354 1309 1256 1200 1142 1077
F07 1587 1534 1489 1445 1406 1354 1298 1244
F08 1683 1633 1589 1546 1502 1460 1406 1355
F09 1919 1890 1846 1807 1771 1735 1694 1650
F01 1475 1421 1369 1314 1260 1207 1152 1097
F02 1791 1741 1699 1652 1609 1561 1513 1465
F03 924 846 767 684 606 529 463 398
F04 1259 1197 1138 1074 1015 947 885 821
F05^ 1710 1660 1613 1583 1517 1470 1421 1374
F06 1592 1536 1486 1436 1383 1331 1281 1233
F07 1627 1574 1524 1474 1423 1370 1320 1271
F08 1921 1879 1840 1791 1751 1705 1656 1610
F09 2026 1981 1929 1901 1858 1819 1773 1733
F01 1259 1197 1138 1074 1015 947 885 821
F02 1791 1741 1699 1652 1609 1561 1513 1465
F03 1176 1108 1044 980 913 845 779 718
F04 1347 1286 1231 1172 1115 1055 995 933
F05^ 1921 1879 1840 1791 1751 1705 1656 1610
F06 1446 1404 1335 1280 1226 1171 1117 1062
F07 1618 1567 1510 1460 1413 1364 1312 1262
F08 2009 1964 1918 1886 1852 1811 1759 1722
F09 2161 2122 2084 2048 2010 1973 1940 1914
F01 1766 1712 1666 1612 1558 1506 1450 1395
F02 2205 2157 2110 2064 2021 1974 1925 1879
F03 1118 1035 952 860 750 663 590 519
F04 1684 1620 1561 1499 1438 1378 1318 1259
F05^ 2031 1981 1933 1901 1850 1799 1750 1702
F06 1220 1145 1070 995 952 907 811 725
F07 1357 1311 1243 1175 1107 1021 932 861
F08 1906 1877 1828 1778 1726 1674 1622 1568
F09 2454 2396 2347 2296 2250 2202 2157
MODEL
THERMOSTAT
CALL
TAP #
EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN)
*M9C960303AN
Y2
*M9C960403AN
Y2
Y2
*M9C960803BN
Y2
*M9C960804CN
Y2
*M9C960603AN
Y2
*M9C961004CN
Y2
*M9C961005CN
Y2
*M9C961205DN
Y2
*M9C960603BN
37
Airflow Table
Note: ^Default speed
CIRCULATION AIRFLOW
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
CFM CFM CFM CFM CFM CFM CFM CFM
F01 753 708 663 616 568 513 470 423
F02 915 883 845 809 773 730 690 650
F03 529 518 461 394 343 288 223 N/A
F04 880 843 807 768 723 683 643 590
F05 1055 1022 990 959 930 891 858 825
F06 1101 1072 1040 1010 980 949 918 881
F07 1190 1162 1134 1104 1077 1042 1013 982
F08 1183 1157 1130 1103 1077 1047 1018 988
F09 1229 1206 1178 1153 1128 1100 1070 1042
F01 733 691 650 602 553 498 448 402
F02 1051 1024 996 966 935 907 868 836
F03 665 620 570 517 462 407 359 309
F04 915 881 846 814 780 737 695 652
F05 1138 1114 1092 1064 1035 1006 977 947
F06 887 855 823 790 751 705 666 608
F07 1189 1163 1138 1111 1085 1059 1032 1001
F08 1266 1243 1218 1197 1172 1148 1123 1099
F09 1342 1324 1305 1280 1263 1239 1216 1193
F01 900 867 830 798 758 718 682 645
F02 1292 1272 1248 1227 1206 1184 1162 1137
F03 688 649 603 551 499 447 405 359
F04 866 830 797 759 717 675 634 591
F05 1223 1195 1176 1149 1124 1101 1074 1047
F06 1037 1004 975 950 921 886 853 823
F07 1079 1053 1025 1000 970 941 911 873
F08 1128 1099 1075 1050 1022 993 965 937
F09 1171 1148 1124 1096 1070 1045 1017 988
F01 914 864 815 762 704 654 604 560
F02 1121 1083 1041 996 953 906 861 818
F03 758 696 636 572 512 460 412 N/A
F04 960 917 864 812 764 708 661 614
F05 1164 1123 1084 1042 1003 960 920 871
F06 1219 1180 1141 1102 1062 1020 978 940
F07 1273 1240 1207 1171 1128 1089 1051 1012
F08 1307 1270 1235 1198 1160 1122 1083 1043
F09 1427 1390 1362 1327 1297 1260 1224 1193
F01 1205 1169 1131 1091 1053 1014 974 934
F02 1415 1385 1355 1322 1291 1255 1219 1186
F03 696 635 568 500 442 390 336 255
F04 1152 1112 1076 1035 996 954 916 868
F05 1321 1287 1251 1217 1181 1146 1112 1072
F06 901 851 801 746 690 638 587 543
F07 1112 1076 1032 992
949 905 858 819
F08 1290 1252 1215 1182 1143 1107 1071 1032
F09 1471 1440 1409 1377 1347 1314 1283 1247
F01 1289 1234 1180 1122 1058 991 917 840
F02 1836 1784 1741 1703 1664 1628 1585 1537
F03 1297 1246 1199 1142 1083 1020 949 872
F04 1194 1137 1079 1014 948 873 792 712
F05 1748 1696 1650 1612 1574 1526 1478 1428
F06 1451 1399 1354 1309 1256 1200 1142 1077
F07 1587 1534 1489 1445 1406 1354 1298 1244
F08 1683 1633 1589 1546 1502 1460 1406 1355
F09 1919 1890 1846 1807 1771 1735 1694 1650
F01 1475 1421 1369 1314 1260 1207 1152 1097
F02 1791 1741 1699 1652 1609 1561 1513 1465
F03 924 846 767 684 606 529 463 398
F04 1259 1197 1138 1074 1015 947 885 821
F05 1710 1660 1613 1583 1517 1470 1421 1374
F06 1592 1536 1486 1436 1383 1331 1281 1233
F07 1627 1574 1524 1474 1423 1370 1320 1271
F08 1921 1879 1840 1791 1751 1705 1656 1610
F09 2026 1981 1929 1901 1858 1819 1773 1733
F01 1259 1197 1138 1074 1015 947 885 821
F02 1791 1741 1699 1652 1609 1561 1513 1465
F03 1176 1108 1044 980 913 845 779 718
F04 1347 1286 1231 1172 1115 1055 995 933
F05 1921 1879 1840 1791 1751 1705 1656 1610
F06 1446 1404 1335 1280 1226 1171 1117 1062
F07 1618 1567 1510 1460 1413 1364 1312 1262
F08 2009 1964 1918 1886 1852 1811 1759 1722
F09 2161 2122 2084 2048 2010 1973 1940 1914
F01 1766 1712 1666 1612 1558 1506 1450 1395
F02 2205 2157 2110 2064 2021 1974 1925 1879
F03 1118 1035 952 860 750 663 590 519
F04 1684 1620 1561 1499 1438 1378 1318 1259
F05 2031 1981 1933 1901 1850 1799 1750 1702
F06 1220 1145 1070 995 952 907 811 725
F07 1357 1311 1243 1175 1107 1021 932 861
F08 1906 1877 1828 1778 1726 1674 1622 1568
F09 2454 2396 2347 2296 2250 2202 2157 2113
MODEL
THERMOSTAT
CALL
TAP #
EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN)
*M9C960303AN
G
*M9C961005CN
G
*M9C961205DN
G
*M9C960403AN
G
*M9C960603AN
G
*M9C960603BN
G
*M9C960803BN
G
*M9C960804CN
G
*M9C961004CN
G
38
Airflow Table
Note: ^Default speed
^^ Not recommended for heating
0.6 0.7 0.8
CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM
F01^ 753 25 708 26 663 28 616 30 568 33 513 470 423
F03^^ 529 N/A 518 N/A 461 N/A 394 N/A 343 N/A 288 223 N/A
F04 880 21 843 22 807 23 768 24 723 26 683 643 590
F02^ 915 29 883 30 845 32 809 33 773 34 730 690 650
F04 880 30 843 32 807 33 768 35 723 37 683 643 590
F05 1055 25 1022 26 990 27 959 28 930 29 891 858 825
F01^ 733 34 691 36 650 38 602 41 553 45 498 448 402
F03^^ 665 N/A 620 N/A 570 N/A 517 N/A 462 N/A 407 359 309
F04 915 27 881 28 846 29 814 31 780 32 737 695 652
F02^ 1051 34 1024 35 996 36 966 37 935 38 907 868 836
F04 915 39 881 40 846 42 814 44 780 46 737 695 652
F05 1138 31 1114 32 1092 33 1064 33 1035 34 1006 977 947
F01^ 900 40 867 42 830 44 798 46 758 48 718 682 645
F03^^ 688 N/A 649 N/A 603 N/A 551 N/A 499 N/A 447 405 359
F04 866 42 830 44 797 46 759 48 717 50 675 634 591
F02^ 1292 41 1272 42 1248 43 1227 43 1206 44 1184 1162 1137
F04^^ 866 N/A 830 N/A 797 N/A 759 N/A 717 N/A 675 634 591
F05 1223 44 1195 45 1176 45 1149 46 1124 47 1101 1074 1047
F01^ 914 41 864 43 815 46 762 49 704 53 654 604 560
F03^^ 758 N/A 696 N/A 636 N/A 572 N/A 512 N/A 460 412 N/A
F04 960 39 917 41 864 43 812 46 764 49 708 661 614
F02^ 1121 48 1083 49 1041 51 996 54 953 56 906 861 818
F04^^ 960 N/A 917 N/A 864 N/A 812 N/A 764 N/A 708 661 614
F05 1164 46 1123 47 1084 49 1042 51 1003 53 960 920 871
F01^ 1205 41 1169 43 1131 44 1091 46 1053 47 1014 974 934
F03^^ 696 N/A 635 N/A 568 N/A 500 N/A 442 N/A 390 336 255
F04 1152 43 1112 45 1076 46 1035 48 996 50 954 916 868
F02^ 1415 50 1385 51 1355
52 1322 54 1291 55 1255 1219 1186
F04^^ 1152 N/A 1112 N/A 1076 N/A 1035 N/A 996 N/A 954 916 868
F05 1321 54 1287 55 1251 57 1217 58 1181 60 1146 1112 1072
F01^ 1289 39 1234 40 1180 42 1122 44 1058 47 991 917 840
F03 1297 38 1246 40 1199 42 1142 44 1083 46 1020 949 872
F04 1194 42 1137 44 1079 46 1014 49 948 52 873 792 712
F02^ 1836 39 1784 40 1741 41 1703 42 1664 43 1628 1585 1537
F04^^ 1194 N/A 1137 N/A 1079 N/A 1014 N/A 948 N/A 873 792 712
F05 1748 41 1696 42 1650 43 1612 44 1574 45 1526 1478 1428
F01^ 1475 42 1421 44 1369 45 1314 47 1260 49 1207 1152 1097
F03^^ 924 N/A 846 N/A 767 N/A 684 N/A 606 N/A 529 463 398
F04 1259 49 1197 52 1138 55 1074 58 1015 61 947 885 821
F02^ 1791 50 1741 51 1699 52 1652 54 1609 55 1561 1513 1465
F04^^ 1259 N/A 1197 N/A 1138 N/A 1074 N/A 1015 N/A 947 885 821
F05 1710 52 1660 54 1613 55 1583 56 1517 59 1470 1421 1374
F01^ 1259 49 1197 52 1138 55 1074 58 1015 61 947 885 821
F03^^ 1176 N/A 1108 N/A 1044 N/A 980 N/A 913 N/A 845 779 718
F04 1347 46 1286 48 1231 51 1172 53 1115 56 1055 995 933
F02^ 1791 50 1741 51 1699 52 1652 54 1609 55 1561 1513 1465
F04^^ 1347 N/A 1286 N/A 1231 N/A 1172 N/A 1115 N/A 1055 995 933
F05 1921 46 1879 47 1840 48 1791 50 1751 51 1705 1656 1610
F01^ 1766 42 1712 44 1666 45 1612 46 1558 48 1506 1450 1395
F03^^ 1118 N/A 1035 N/A 952 N/A 860 N/A 750 N/A 663 590 519
F04 1684 44 1620 46 1561 48 1499 50 1438 52 1378 1318 1259
F02^ 2205 48 2157 49 2110 51 2064 52 2021 53 1974 1925 1879
F04^^ 1684 N/A 1620 N/A 1561 N/A 1499 N/A 1438 N/A 1378 1318 1259
F05 2031 53 1981 54 1933 55 1901 56 1850 58 1799 1750 1702
35-65
TEMP RANGE
HIGH
20-50
20-50
30-60
35-65
35-65
25-55
35-65
35-65
*M9C960603AN
W/W1
W2
*M9C960603BN
W/W1
W2
*M9C960803BN
W/W1
W2
TAP #
EXTERNAL STATIC PRESSURE, (INCHES WATER COLUMN)
0.1
0.2
0.3
*M9C961004CN
*M9C961005CN
*M9C961205DN
*M9C960303AN
W/W1
W2
*M9C960403AN
W/W1
W2
MODEL
THERMOSTAT
CALL
*M9C960804CN
W/W1
W2
HEATING AIFLOW
TEMP RANGE
LOW
20-50
20-50
20-50
25-55
35-65
35-65
W/W1
W2
W/W1
W2
W/W1
W2
35-65
0.4
0.5
35-65
25-55
39
Normal Sequence of Operation
Power Up
Upon being powered up, the control board will perform in-
ternal and polarity checks. The control will display I d L, idle
mode until a call from the thermostat is received.
Continuous Fan Mode Speed Selection
When a 24 vac signal is present on the G terminal, the blower
motor will operate on selected continuous blower speed. The
EAC-H will also be energized as long as the blower motor
is energized.
When the R to G circuit is opened, the blower motor will shut
down if no other function requires blower motor operation.
To change the main blower speed in circulation mode, follow
the following steps:
1. Press left or right switch until LED displays “F S d “. Press
center switch and the LED will display the selected speed
number as Fxx (xx: Blower speed number from 01 to 09).
SP3 is default speed for circulation.
2. The control will display an available speed number every
time Left/Right switches are pressed. All 9 speeds are
available for circulation.
3. Press the center button to select the desired speed. The
control will immediately apply that speed setting.
THERMOSTAT
CALL
AVAILABLE
SPEEDS
G
SP1
SP2
SP3 (DEFAULT
SP4
SP5
SP6
SP7
SP8
SP9
HeAtinG mode SPeed SeleCtion
To change the main blower speed in HEATING mode, follow
the following steps:
1. Press left or right button till LED displays “gA1 “(for single
stage HEATING) or “gA2 “(for Two stage HEATING).
Press center button and LED will display the selected
speed number as Fxx (xx: Blower speed number).
2. The control shall rotate available speed number every
time Left/Right switches are pressed. Table below shows
the available speeds for Low & High heat mode.
3. When the center switch is pressed, the current displayed
speed shall be selected, and control shall the newly
selected speed in next heating call.
Note: Always refer to the Heating Chart to choose from
available heating speeds.
THERMOSTAT CALL AVAILABLE SPEEDS
W/W1
F01 (DEFAULT)
F03
F04
W2
F02 (DEFAULT)
F04
F05
Heating Mode
Call for 1st Stage Heat
• On a call for heat, the thermostat contacts close & the
control board receives 24 vac on the W1 terminal.
• The control board microcomputer runs its self-check
routine.
• The control veries the limit switch is closed (24 vac on
Pin 8 of the 12 Pin connector).
• The control veries that pressure switch circuit is open
(0 vac on Pin 5).
• The control module performs a gas valve circuitry check
to verify gas valve relay state and presence of voltage
at the valve.
• The system will energize the Induced draft blower.
• The pre-purge period begins once the low re pressure
switch is detected closed. (24 vac on Pin 5).
• After the completion of pre-purge, the control will ener-
gize the igniter.
• After completion of the igniter warm-up period:
• The gas valve is energized.
• The igniter is de-energized as soon as ame is sensed.
• After 30 seconds the indoor blower is energized on
heating speed.
• When using a single-stage heating thermostat the fur-
nace will transition to 2nd stage gas heat by either a
xed time or auto mode, depending on menu selections
made by the installer.
• The inducer motor is enabled at high speed.
• Closure of the second stage pressure switch will energize
the high re stage of the gas valve.
• The 2nd stage gas heat speed of the indoor blower is
energized
40
-When the thermostat is satised;
• The gas valve is de-energized.
• The inducer remains energized for the post purge period
(15 seconds).
• The indoor blower runs for the selected o delay period
(90 seconds by default, adjustable from 30 – 180 sec-
onds).
Call for 2nd Stage Heat During 1st Stage Heat Operation
• The control board receives a 24 vac signal on the W2
terminal.
• The inducer motor is enabled at high speed.
• Closure of the second stage pressure switch will energize
the high re stage of the gas valve.
• The 2nd stage gas heat speed of the indoor blower is
energized.
Note: A call for second stage without a call for rst stage will
be ignored.
CoolinG mode SPeed SeleCtion
To change the main blower speed in COOLING mode, follow
the following steps:
1. Press left or right button till LED displays “AC1 “(for single
stage COOLING) or “AC2 “(for Two stage COOLING).
Press center button and LED will display the selected
speed number as Fxx (xx: Blower speed number from
1 to 9).
2. The control shall rotate available speed number every
time Left/Right switches are pressed. All 9 speeds are
available for both Single and Two Stage cooling.
3. When the center switch is pressed, the current displayed
speed shall be selected, and control shall apply the newly
selected speed in next cooling call.
THERMOSTAT CALL AVAILABLE SPEEDS
Y/Y1
F01
F02
F03
F04 (DEFAULT)
F05
F06
F07
F08
F09
SinGle StAGe CoolinG SPeed tABle for 2 StAGe ifC
THERMOSTAT CALL AVAILABLE SPEEDS
Y2
F01
F02
F03
F04
F05 (DEFAULT)
F06
F07
F08
F09
tWo StAGe CoolinG SPeed tABle for 2 StAGe ifC
Cooling Mode
Low Stage Cooling Mode Sequence:
On a call for low stage cooling, the Y/Y1 or Y/Y1 and G ther-
mostat contacts close signaling the furnace control board
with 24 vac. on Y/Y1 or Y/Y1 and G terminals.
• The 7-Segment will display the cool mode; 1 A C
• The compressor and condenser fan are energized.
• The circulator fan is energized at low cool speed after
a cool on delay. The electronic air cleaner will also be
energized. After the thermostat is satised, the compres-
sor is de-energized and the Cool Mode Fan O Delay
period begins.
• Following the Cool Mode Fan O Delay period, the cool
circulator and air cleaner relay are de-energized.
2nd Stage Cooling Mode Sequence:
On a call for 2nd stage cooling, the Y2 or Y2 and G thermostat
contacts close signaling the furnace control board with 24
vac. on Y2 or Y2 and G terminals.
• The 7-Segment will display the cool mode; 2 A C
• The compressor and condenser fan are energized.
• The circulator fan is energized at cool speed after a cool
on delay. The electronic air cleaner will also be energized.
• After the thermostat is satised, the compressor is de-en-
ergized and the Cool Mode Fan O Delay period begins.
• Following the Cool Mode Fan O Delay period, the cool
circulator and air cleaner relay are de-energized.
Operational Checks
The burner ames should be inspected with the burner
compartment door installed. Flames should be stable, quiet,
soft, and blue (dust may cause orange tips but they must not
be yellow). Flames should extend directly outward from the
burners without curling, oating, or lifting o. Flames must
not impinge on the sides of the heat exchanger ring tubes.
41
discharge. This procedure is applicable to both installed and
uninstalled (ungrounded) furnaces.
1. Disconnect all power to the furnace. Do not touch the
integrated control module or any wire connected to the
control prior to discharging your body’s electrostatic
charge to ground.
2. Firmly touch a clean, unpainted, metal surface of the
furnace away from the control. Any tools held in a
person’s hand during grounding will be discharged.
3. Service integrated control module or connecting
wiring following the discharge process in step 2. Use
caution not to recharge your body with static electricity;
(i.e., do not move or shue your feet, do not touch
ungrounded objects, etc.). If you come in contact with
an ungrounded object, repeat step 2 before touching
control or wires.
4. Discharge your body to ground before removing a new
control from its container. Follow steps 1 through 3 if
installing the control on a furnace. Return any old or
new controls to their containers before touching any
ungrounded object.
Diagnostic Chart
Refer to the Troubleshooting Chart in the back of this manual
for assistance in determining the source of unit operational
problems.
External Lockout
- A control lockout resulting from an external fault
sensed by the control, such as an unsuccessful
recycle or retry period, or a limit trip. Once in
External Lockout, the control will shut down for a
period of one hour before attempting another trial
for ignition.
Internal Lockout
- A failure internal to the control board.
Fault Recall
Retrieving Fault Codes
Resetting From Lockout
Furnace lockout results when a furnace is unable to achieve
ignition after three attempts during a single call for heat. It is
characterized by a non-functioning furnace and a one ash
diagnostic LED code. If the furnace is in “lockout”, it can be
reset in any of the following ways.
1. Automatic reset. The integrated control module will
automatically reset itself and attempt to resume normal
operations following a one hour lockout period.
2. Manual power interruption. Interrupt 115 volt power to
the furnace for 1 - 20 seconds.
3. Manual thermostat cycle. Lower the thermostat so that
there is no longer a call for heat then reset to previous
setting. Interrupt thermostat signal to the furnace for
1 - 20 seconds.
NOTE: If the condition which originally caused the lockout
still exists, the control will return to lockout. Refer to the
Troubleshooting Chart for aid in determining the cause.
Safety Circuit Description
A number of safety circuits are employed to ensure safe and
proper furnace operation. These circuits serve to control any
potential safety hazards and serve as inputs in the moni-
toring and diagnosis of abnormal function. These circuits
are continuously monitored during furnace operation by the
integrated control module.
Integrated Control Module
The integrated control module will display furnace status
including faults, mode of operation and air ow, on three
seven segment displays.
Primary Limit
The primary limit control is located on the partition panel and
monitors heat exchanger compartment temperatures. It is
a normally-closed (electrically), automatic reset, tempera-
ture-activated sensor. The limit guards against overheating
as a result of insucient conditioned air passing over the
heat exchanger.
Auxiliary Limit
The auxiliary limit controls are located on or near the circula-
tor blower and monitors blower compartment temperatures.
They are a normally-closed (electrically), manual-reset sen-
sors. These limits guard against overheating as a result of
insucient conditioned air passing over the heat exchanger.
Rollout Limit
The rollout limit controls are mounted on the burner/manifold
assembly and monitor the burner ame. They are normal-
ly-closed (electrically), manual-reset sensors. These limits
guard against burner ames not being properly drawn into
the heat exchanger.
Pressure Switches
The pressure switches are normally-open (closed during
operation) negative air pressure-activated switches. They
monitor the airow (combustion air and ue products) through
the heat exchanger via pressure taps located on the induced
draft blower and the coil front cover. These switches guard
against insucient airow (combustion air and ue products)
through the heat exchanger and/or blocked condensate drain
conditions.
Flame Sensor
The ame sensor is a probe mounted to the burner/manifold
assembly which uses the principle of ame rectication to
determine the presence or absence of ame.
Troubleshooting
Electrostatic Discharge (ESD)
Precautions
Use the following precautions during furnace installation
and servicing to protect the integrated control module from
damage. By putting the furnace, the control, and the person
at the same electrostatic potential, these steps will help
avoid exposing the integrated control module to electrostatic
42
Maintenance
HIGH VOLTAGE !
T
O
AVOID
PERSONAL
INJURY
OR
DEATH
DUE
TO
ELECTRICAL
SHOCK
,
DISCONNECT
ELECTRICAL
POWER
BEFORE
PERFORMING
ANY
SERVICE
OR
MAINTENANCE
.
WARNING
Annual Inspection
The furnace should be inspected by a qualied installer, or
service agency at least once per year. This check should be
performed at the beginning of the heating season. This will
ensure that all furnace components are in proper working
order and that the heating system functions appropriately.
Pay particular attention to the following items. Repair or
service as necessary.
• Flue pipe system. Check for blockage and/or
leakage. Check the outside termination and the
connections at and internal to the furnace.
• Heat exchanger. Check for corrosion and/or buildup
within the heat exchanger passageways.
• Burners. Check for proper ignition, burner ame,
and ame sense.
• Drainage system. Check for blockage and/or
leakage. Check hose connections at and internal
to furnace.
• Wiring. Check electrical connections for tightness
and/or corrosion. Check wires for damage.
• Filters.
T
O
AVOID
ELECTRICAL
SHOCK
,
INJURY
OR
DEATH
,
DISCONNECT
ELECTRICAL
POWER
BEFORE
PERFORMING
ANY
MAINTENANCE
. I
F
YOU
MUST
HANDLE
THE
IGNITER
,
HANDLE
WITH
CARE
. T
OUCHING
THE
IGNITER
ELEMENT
WITH
BARE
FINGERS
,
ROUGH
HANDLING
OR
VIBRATION
COULD
DAMAGE
THE
IGNITER
RESULTING
IN
PREMATURE
FAILURE
. O
NLY
A
QUALIFIED
SERVICER
SHOULD
EVER
HANDLE
THE
IGNITER
.
WARNING
Filters
Filter Maintenance
Improper lter maintenance is the most common cause of
inadequate heating or cooling performance. Filters should
be cleaned (permanent) or replaced (disposable) every two
months or as required. When replacing a lter, it must be
replaced with a lter of the same type and size.
T
O
ENSURE
PROPER
UNIT
PERFORMANCE
,
ADHERE
TO
THE
FILTER
SIZES
GIVEN
IN
THE
RECOMMENDED
M
INIMUM
F
ILTER
S
IZE
T
ABLE
OR
S
PECIFICATION
S
HEET
APPLICABLE
TO
YOUR
MODEL
.
CAUTION
Filter Removal
Depending on the installation, diering lter arrangements
can be applied. Filters can be installed in either the central
return register or a side panel external lter rack (upow
only). A media air lter or electronic air cleaner can be used
as an alternate lter. Follow the lter sizes give n in the
Recommended Minimum Filter size table to ensure proper
unit performance.
To remove lters from an external lter rack in an upright
upow installation, follow the directions provided with external
lter rack kit.
Horizontal Unit Filter Removal
Filters in horizontal installations are located in the central
return register or the ductwork near the furnace.
To remove:
1. Turn OFF electrical power to furnace.
2. Remove lter(s) from the central return register or
ductwork.
3. Replace filter(s) by reversing the procedure for
removal.
4. Turn ON electrical power to furnace.
Media Air Filter or Electronic Air Cleaner
Removal
Follow the manufacturer’s directions for service.
HIGH VOLTAGE !
T
O
AVOID
PERSONAL
INJURY
OR
DEATH
DUE
TO
ELECTRICAL
SHOCK
,
DISCONNECT
ELECTRICAL
POWER
BEFORE
PERFORMING
ANY
SERVICE
OR
MAINTENANCE
.
WARNING
Burner Flame
Figure 47
Burners
Visually inspect the burner ames periodically during the
heating season. Turn on the furnace at the thermostat and
allow several minutes for ames to stabilize, since any dis-
lodged dust will alter the ames normal appearance. Flames
should be stable, quiet, soft, and blue (dust may cause or-
ange tips but they must not be yellow). They should extend
directly outward from the burners without curling, oating, or
lifting o. Flames must not impinge on the sides of the heat
exchanger ring tubes.
43
Repair and Replacement Parts
• When ordering any of the listed functional parts, be
sure to provide the furnace model, manufacturing, and
serial numbers with the order.
• Although only functional parts are shown in the parts
list, all sheet metal parts, doors, etc. may be ordered
by description.
• Parts are available from your distributor.
Functional Parts List:
Auxiliary Limit Switch
Blower Cuto
Blower Housing
Blower Motor
Blower Mounting Bracket
Blower Wheel
Door Switch
Flame Sensor
Gas Manifold
Gas Valve
Heat Exchanger
Igniter
Induced Draft Blower
Integrated Control Module
Natural Gas Orice
Pressure Switch
Primary Limit Switch
Propane Gas Orice
Rollout Limit Switch
Transformer
Induced Draft and Circulator Blowers
The bearings in the induced draft blower and circulator blower
motors are permanently lubricated by the manufacturer. No
further lubrication is required. Check motor windings for
accumulation of dust which may cause overheating. Clean
as necessary.
Condensate Trap and Drain System (Quali-
fied Servicer Only)
Annually inspect the drain tubes, drain trap, and eld-sup-
plied drain line for proper condensate drainage. Check drain
system for hose connection tightness, blockage, and leaks.
Clean or repair as necessary.
T
O
AVOID
ELECTRICAL
SHOCK
,
INJURY
OR
DEATH
,
DISCONNECT
ELECTRICAL
POWER
BEFORE
PERFORMING
ANY
MAINTENANCE
. I
F
YOU
MUST
HANDLE
THE
IGNITER
,
HANDLE
WITH
CARE
. T
OUCHING
THE
IGNITER
ELEMENT
WITH
BARE
FINGERS
,
ROUGH
HANDLING
OR
VIBRATION
COULD
DAMAGE
THE
IGNITER
RESULTING
IN
PREMATURE
FAILURE
. O
NLY
A
QUALIFIED
SERVICER
SHOULD
EVER
HANDLE
THE
IGNITER
.
WARNING
Flame Sensor (Qualified Servicer Only)
Under some conditions, the fuel or air supply can create a
nearly invisible coating on the ame sensor. This coating
acts as an insulator causing a drop in the ame sense signal.
If the ame sense signal drops too low the furnace will not
sense ame and will lock out. The ame sensor should be
carefully cleaned by a qualied servicer using steel wool.
Before Leaving an Installation
• Cycle the furnace with the thermostat at least three
times. Verify cooling and fan only operation.
• Review the Owner’s Manual with the homeowner and
discuss proper furnace operation and maintenance.
• Leave literature packet near furnace.
44
Idle
Continous Fan
Compressor Cooling, Low
Stage
Compressor Cooling, High
Stage
Gas heat, Low Stage
Gas heat, High Stage
OEM test Mode
Mode
Main
Menu
Status Codes
Main
Menu
Option Menu
Active Alarm menu
( xx: code numbers )
Last 6 Faults
( xx: code numbers )
Code Release Number
CR Number
Reset to Factory Default
Blower Speed for Continous Fan Mode
( xx: Blower Speed
Number F01, F02.. )
Blower Speed for 1st Stage
Compressor Mode
( xx: Blower Speed
Number F01, F02.. )
Blower Speed for 2nd Stage
Compressor Mode
( xx: Blower Speed
Number F01, F02.. )
Cool On Delay
Delay, Seconds
Default set at 7
Secs, Adjustments
can be made in 7
Secs increments
from 0 to 35 Secs
Cool Off Delay
Delay, Seconds
Default set at 65
Secs, Adjustments
can be made in 5
Secs increments
from 0 to 120 Secs
Blower Speed for 1 Gas Heat Mode
( xx: Blower Speed
Number F01, F02.. )
Blower Speed for 1 Gas Heat Mode
( xx: Blower Speed
Number F01, F02.. )
Gas Heat On Delay
Delay, Seconds
Default set at 30
Secs, Adjustments
can be made in 5
Secs increments
from 5 to 30 Secs
Gas heat Off Delay
Delay, Seconds
Default set at 90
Secs, Adjustments
can be made in 30
Secs increments
from 30 to 180 Secs
Automatic Heat Staging - For Two
Stage Control
Refer to Section "
CHANGING
HEATING MODE
SETTING"
Menu Description
LED Display
Notes
45
Symptom
LED
Status
Fault Description Corrective Actions
Normal operation Normal operation None
Locate and correct gas interruption
Check front cover pressure switch
operation and verify proper drainage
(hose, wiring, contact operation),
correct if necessary
Replace or realign igniter
Check flame sense signal, clean
sensor if coated or oxidized
Check flue piping for blockage,
proper length, elbows, and
termination
Verify proper induced draft blower
performance
Low stage pressure switch
circuit is closed at start of
heating cycle
Low stage pressure switch
contacts sticking
Short in pressure switch circuit
wiring
Low stage pressure switch
circuit is not closed
Pressure switch hose blocked
pinched, or connected
Inspect flue and/or inlet air piping for
blockage, proper length, elbows,
and termination
Check drain system, correct as
necessary
Check induced draft blower
performance, correct as necessary
Incorrect pressure switch set
point or malfunctioning switch
contacts
Check pressure switch operation,
replace as needed
Loose or improperly connected
wiring
Tighten or correct wiring connection
Primary limit circuit is open
Check filters and ductwork for
blockage Clean filters or remove
obstruction
Insufficient conditioned air over
the heat exchanger
Check circulator blower speed and
performance
Blocked filters , res trictive
ductwork, improper circulator
blower speed, or failed
circulator blower motor
Correct speed or replace blower
motor if necessary
Loose or improperly connected
wiring in high limit circuit
Tighten or correct wiring connection
Flame sensed with no call for
heat
Correct short at flame sensor or in
flame sensor wiring
Short to ground in flame sense
circuit
Lingering burner flame Slow
closing gas valve
Open fuse Replace fuse
Short in low voltage wiring
Locate and correct short in low
voltage wiring
Flame sense micro amp signal
is minimal
Flame sensor is
coated/oxidized
Flame sensor incorrectly
positioned in burner fame
Check inlet air piping for blockage,
proper length, elbows, and
termination
Compare current gas pressure to
rating plate and adjust as needed
Problem with igniter circuit
Check and correct wiring from
integrated control module to igniter
Improperly connected or
shorted igniter
Poor unit ground
Igniter relay fault on integrated
control module
Check igniter output from control,
replace if necessary
Furnace fails to
operate
Furnace lockout due to an
excessive number of ignition
“retries” (3 total)
Failure to establish flame
Loss of flame after
establishment
Furnace fails to
operate
Replace low stage pressure switch
Repair short in wiring
Normal furnace
operation
Clean flame sensor if coated or
oxidized Inspect for proper flame
sensor alignment
Lazy burner flame due to
improper gas pressure or
combustion air
Induced draft
blower runs
continuously with
no furnace
operation
Inspect pressure switch hose,
repair/replace if necessary
Blocked flue and/or inlet air
pipe, blocked drain system or
weak induced draft blower
Circulator blower
runs continuously
No furnace
operation
Induced draft
blower and
circulator blower
runs continuously
No furnace
operation
Check for lingering or lazy flame
Verify proper operation of gas valve
No furnace
operation
Furnace fails to
operate
Diagnose and replace shorted
igniter as needed Verify and correct
unit ground wiring if needed
Symptom
LED
Status
Fault Description Corrective Actions
Normal operation
Normal operation None
High stage pressure switch
circuit is closed at start of
heating cycle.
High stage pressure switch
contacts sticking
Shorts in pressure switch
circuit wiring
Repair short in wiring
Furnace fails to
operate on high
stage; furnace
operates normally
on low stage
Inspect pressure switch hose,
repair/replace if necessary
Inspect flue and/or inlet air piping for
blockage, proper length, elbows,
and termination
Check drain system, correct as
necessary
Check induced draft blower
performance, correct as necessary
Tighten or correct wiring connection
Polarity of 115 volt AC is
reversed
Correct polarity, check and correct
wiring if necessary
Poor unit ground
Verify proper ground, correct if
necessary
Gas valve is not energized
when it should be
Check wiring in gas valve circuit
External Gas Valve Error Replace integrated control board
Gas valve is energized when it
should not be
Check wiring in gas valve circuit
Internal gas valve error Replace integrated control board
Furnace fails to
operate.
No 115 power to furnace or no
24 volt power to integrated
control module.
Restore high voltage power to
furnace and integrated control
module.
Blown fuse or tripped circuit
breaker
Correct condition which caused
fuse to open, replace fuse
Integrated control module is
non- functional
Replace non-functional integrated
control module.
Furnace fails to
operate
Grounding fault
Poor neutral connection
Verify neutral wire connection to
furnace & continuity to ground
source
Furnace fails to
operate
Open roll out switch
Check for correct gas pressure
Check for correct burner alignment
Check for and correct burner
restriction
Furnace fails to
operate
Ignitor Open
Check for Ignitor wiring.
Replace Damaged Ignitor
Furnace fails to
operate
Inducer relay Error Replace integrated control board
Twinning feature
not working
TWIN Error
Check for wiring connections.
Replace integrated control board
Furnace fails to
operate
Internal Faults or IRQ Los s in
Control Board
Replace integrated control board
Furnace fails to
operate on high
stage; furnace
operates normally
on low stage
Induced draft
blower operating
Diagnose and replace high stage
pressure switch if needed
High stage pressure switch
circuit is not clos ed
Induced draft
blower operating
Furnace fails to
operate
Furnace fails to
operate
Furnace fails to
operate
Integrated control
module LED
display provides
no signal
Troubleshooting Chart
46
HIGH VOLTAGE!
Disconnect ALL power before servicing or installing this unit. Multiple
power sources may be present. Failure to do so may cause property
damage, personal injury or death.
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
Wiring Diagram
G
N
G
N
D
R
D
GN
24
VAC
115
VAC
G
N
D
GRD
0
1
4
0
F
0
2
6
2
0
-
A
BK
E
A
C
H
U
M
I
D
I
F
IE
R
I
D
N
E
U
T
R
A
L
W
I
R
IN
G
T
O
U
N
I
T
L
INTEGRATED CONTROL MODULE
H
O
T
S
U
R
F
A
C
E
G
N
D
B
L
W
R
N
E
U
T
R
A
L
W
A
R
N
I
N
G
:
G
R
O
U
N
D
E
D
.
O
V
E
R
C
U
R
R
E
N
T
P
R
O
T
E
C
T
I
O
N
D
E
V
I
C
E
M
U
S
T
B
E
P
R
O
P
E
R
L
Y
S
W
I
T
C
H
N
E
U
T
R
A
L
E
L
E
C
T
R
O
N
IC
A
I
R
I
G
N
IN
D
H
I
D
I
S
C
O
N
N
E
C
T
F
S
P
O
L
A
R
IZ
E
D
A
N
D
N
E
U
T
R
A
L
L
I
N
E
N
E
U
T
R
A
L
J
U
N
C
T
I
O
N
B
O
X
B
L
W
R
I
N
D
L
O
N
I
N
D
O
O
R
A
IR
C
L
E
A
N
E
R
H
U
M
D
O
O
R
N
E
U
T
R
A
L
INTEGRATED CONTROL MODULE
T
O
1
1
5
V
A
C
/
1
Ø
/6
0
H
Z
P
O
W
E
R
S
U
P
P
L
Y
W
IT
H
1
1
5
V
A
C
H
U
M
-
O
U
T
I
G
N
I
T
E
R
C
IR
C
U
L
A
T
O
R
B
E
F
O
R
E
S
E
R
V
IC
I
N
G
.
F
L
A
M
E
S
E
N
S
O
R
D
IS
C
O
N
N
E
C
T
P
O
W
E
R
L
I
N
E
G
N
D
BR
WH
GY
YL
OR
PK
RD
WH
PU
GY
L
IM
IT
C
O
N
T
R
O
L
A
U
X
I
L
IA
R
Y
A
U
T
O
R
E
S
E
T
P
K
W
A
R
N
IN
G
:
D
IS
C
O
N
N
E
C
T
40 VA
TRANSFORMER
N
N
O
G
C
S
W
I
T
C
H
P
R
E
S
S
U
R
E
L
O
W
F
I
R
E
S
E
N
S
O
R
F
L
A
M
E
1
R
O
L
L
O
U
T
S
W
IT
C
H
S
O
M
E
U
N
I
T
S
M
A
Y
H
A
V
E
C
T
O
U
N
I
T
M
U
S
T
B
E
P
U
RD
A
N
D
G
R
O
U
N
D
E
D
.
1
JUNCTION BOX
WH
3
BL
B
R
WH
N
O
L
I
M
IT
C
O
N
T
R
O
L
A
U
T
O
R
E
S
E
T
P
R
I
M
A
R
Y
W
H
1
W
H
L
R
D
G
Y
B
K
S
W
IT
C
H
A
S
S
E
M
B
L
Y
I
D
B
LO
W
E
R
T
W
O
-
S
T
A
G
E
P
R
E
S
S
U
R
E
O
R
S
E
R
V
I
C
IN
G
.
W
IR
I
N
G
S
W
IT
C
H
P
R
E
S
S
U
R
E
H
IG
H
F
IR
E
PK
R
D
L
N
B
K
C
D
O
O
R
O
P
E
N
)
(
O
P
E
N
W
H
E
N
D
O
O
R
S
W
IT
C
H
C
O
M
P
A
R
T
M
E
N
T
B
L
O
W
E
R
G
N
D
1
B
L
O
W
E
R
C
IR
C
U
L
A
T
O
R
O
R
Ø
/6
0
H
Z
D
IS
C
O
N
N
E
C
T
(
W
H
IT
E
R
O
D
G
E
R
S
)
G
A
S
V
A
L
V
E
T
W
O
S
T
A
G
E
O
V
E
R
C
U
R
R
E
N
T
C
O
N
N
E
C
T
O
R
2
C
IR
C
U
I
T
G
N
D
W
H
CHASSIS
GROUND
2
3
I
G
N
I
T
E
R
S
U
R
F
A
C
E
H
O
T
2
YL
PU
2
C
B
L
O
W
E
R
D
R
A
F
T
I
N
D
U
C
E
D
PM
BK
B
L
O
W
E
R
C
O
M
P
A
R
T
M
E
N
T
1
1
5
V
A
C
/
1
BK
ECM MTR
HARNESS
HI
OR
POWER BEFORE
R
D
BK
T
O
P
O
W
E
R
S
U
P
P
L
Y
W
IT
H
B
U
R
N
E
R
C
O
M
P
A
R
T
M
E
N
T
P
R
O
T
E
C
T
IO
N
D
E
V
I
C
E
PROPERLY PO
LARIZED
SWITCH (PRESS.)
FIELD SPLICE
FIELD GND
EQUIPMENT G
ND
INTERNAL TO
PROT. DEVICE
INTEGRATED CONTROL
PLUG CONNE
CTION
SWITCH (TEMP.)
JUNCTION
LOW VOLTAGE (24V)
OVERCURRENT
TERMINAL
IGNITER
LOW VOLTAGE FIELD
HI VOLTAGE (115V)
HI VOLTAGE FIELD
NOTES:
1. SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0.7 AMPS.
2. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE USED
WHEN SERVICING.
3. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE
MUST BE REPLACED IT MUST BE REPLACED WITH WIRING MATERIAL
HAVING A TEMPERATURE RATING OF AT LEAST 105
C. USE COPPER
CONDUCTORS ONLY.
4. UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N.E.C.
AND LOCAL CODES.
5. TO RECALL THE LAST 6 FAULTS, MOST RECENT TO LEAST RECENT,
DEPRESS SWITCH FOR MORE THAN 2 SECONDS WHILE IN STANDBY
(NO THERMOSTAT INPUTS)
COLOR CODES:
PK PINK
BR BROWN
WH WHITE
BL BLUE
GY GRAY
RD RED
YL YELLOW
OR ORANGE
PU PURPLE
GN GREEN
BK BLACK
1
2
3
4
5
6
7
8
9
10
11
12
READ CODES FROM LEFT TO RIGHT
EAC-H
XFMR-H
CIRC-H
LINE-H
E20
E39
E2
E1
E15
E8
E5
E4
E3
E7
E6
E
25
5
E
2
6
W
1
4
H
U
M
-
H
K
8
1
LEFT
CENTER
RIGHT
S
W
3
3
1
3
1
3
S
W
1
R
2
2
3
SW
2
6
R
2
2
6
TWIN DEHUM 24V HUM
E21
E34
E24
W2 W /W1 R G R Y/Y1 Y2
RD
BL
RD
BR
BR
BK
BK
BK
WH
WH
WH
WH
RD
PU
YL
GY
WH
OR
GN
PU
PU
PU
PU
NEUT2
NEUT1
CIRC-N
EAC-N
HUM-N
XFMR-N
LINE-N
C
N
O
N
O
C
G
N
D
M
I
C
R
O
T
O
P
S
2
(
9
)
TR (7)
G
HI
C
TH (3)
24V THERMOSTAT CONNECTIONS N.E.C. CLASS 2 WIRE
V
A
L
V
E
G
A
S
W
2
TRANS
FORMER
HLI (8)
Y
2
Y
1
R
L
O
(6
)
O
MVL (10)
NO
W
1
C
R
M
A
N
U
A
L
R
E
S
E
T
R
O
L
L
O
U
T
LI
M
I
T
S
W
IT
C
H
H
I
G
H
F
I
R
E
P
R
E
S
S
.
S
W
T
IC
H
.
C
L
O
W
F
I
R
E
P
R
E
S
S
S
W
I
T
C
H
MVH (4)
D
E
H
U
M
PS1(5)
A
U
T
O
R
E
S
E
T
P
R
I
M
A
R
Y
L
I
M
I
T
24
V
A
C
NO
PM
MVC (11)
C
BLWR
AIR
INDOOR
CIRCULATOR
R
TO
MICRO
TO
T
O
+
V
D
C
40 VA
A
U
T
O
R
E
S
E
T
A
U
X
L
I
M
I
T
INTEGRATED CONTROL MODULE
RD
YL
GY
HLO (1)
INTEGRATED CONTROL MODULE
Internal Faults or IRQ Loss E E E
Lockout Due to Excessive Retries Recycle E E 0
Low Stage Pressure Switch Stuck Closed E E 1
Low Stage pressure Switch Open E E 2
Open High Limit Switch E E 3
Flame Detected When no Flame Should be E E 4
Open Fuse E E 5
Low Flame Signal E E 6
Ignitor Relay Fault E E L
High Stage Pressure Switch Stuck Closed E E 8
High Stage Pressure Switch Open E E 9
Reversed Line Polarity or Grounding Error E E A
Internal Gas Valve Error E E b
External Gas Valve Error E E C
Open Rollout Switch E 1 1
ignitor Open E E N
Inducer Relay Error E E j
TWIN Error E E H
GROUNDING ERROR E 1 0
Seven Segment Display
Status
Seg# Seg# Seg#
5
21 43
R
D
B
K
O
R
B
L
Y
L
Y
L
B
L
O
R
B
K
R
D
T
1
T
2
T
3
T
4
T
5
C
O
M
R
D
47
For all side wall horizontally vented gas fueled equipment installed
in every dwelling, building or structure used in whole or in part for
residential purposes, including those owned or operated by the
Commonwealth and where the side wall exhaust vent termination
is less than seven (7) feet above nished grade in the area of the
venting, including but not limited to decks and porches, the following
requirements shall be satised:
1. INSTALLATION OF CARBON MONOXIDE DETECTORS.
At the time of installation of the side wall horizontal vented
gas fueled equipment, the installing plumber or gastter shall
observe that a hard wired carbon monoxide detector with an
alarm and battery back-up is installed on the oor level where
the gas equipment is to be installed. In addition, the installing
plumber or gastter shall observe that a battery operated
or hard wired carbon monoxide detector with an alarm is
installed on each additional level of the dwelling, building or
structure served by the side wall horizontal vented gas fueled
equipment. It shall be the responsibility of the property owner
to secure the services of qualied licensed professionals for
the installation of hard wired carbon monoxide detectors
a. In the event that the side wall horizontally vented gas
fueled equipment is installed in a crawl space or an attic,
the hard wired carbon monoxide detector with alarm and
battery back-up may be installed on the next adjacent
oor level.
b. In the event that the requirements of this subdivision can
not be met at the time of completion of installation, the
owner shall have a period of thirty (30) days to comply with
the above requirements; provided, however, that during
said thirty (30) day period, a battery operated carbon
monoxide detector with an alarm shall be installed.
2. APPROVED CARBON MONOXIDE DETECTORS. Each
carbon monoxide detector as required in accordance with
the above provisions shall comply with NFPA 720 and be
ANSI/UL 2034 listed and IAS certied.
3. SIGNAGE. A metal or plastic identication plate shall be
permanently mounted to the exterior of the building at a
minimum height of eight (8) feet above grade directly in line
with the exhaust vent terminal for the horizontally vented
gas fueled heating appliance or equipment. The sign shall
read, in print size no less than one-half (1/2) inch in size,
“GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL
OBSTRUCTIONS”.
4. INSPECTION. The state or local gas inspector of the
side wall horizontally vented gas fueled equipment shall
not approve the installation unless, upon inspection, the
inspector observes carbon monoxide detectors and signage
installed in accordance with the provisions of 248 CMR
5.08(2)(a)1 through 4.
EXEMPTIONS
The following equipment is exempt from 248 CMR 5.08(2)(a)1
through 4:
1. The equipment listed in Chapter 10 entitled “Equipment Not
Required To Be Vented” in the most current edition of NFPA
54 as adopted by the Board; and
Special Instructions for Products Installed
in the State of Massachusetts
2. Product Approved side wall horizontally vented gas fueled
equipment installed in a room or structure separate from the
dwelling, building or structure used in whole or in part for
residential purposes.
VENT/FLUE
TEE
COMBUSTION
AIR INTAKE.
DISTANCE BETWEEN
COMBUSTION AIR
INTAKE AND GRADE
DISTANCE BETWEEN
VENT AND GRADE
(c) MANUFACTURER REQUIREMENTS - GAS EQUIPMENT
VENTING SYSTEM PROVIDED. When the manufacturer
of Product Approved side wall horizontally vented gas
equipment provides a venting system design or venting
system components with the equipment, the instructions
provided by the manufacturer for installation of the
equipment and the venting system shall include:
3. Detailed instructions for the installation of the venting system
design or the venting system components; and
4. A complete parts list for the venting system design or venting
system.
(d) MANUFACTURER REQUIREMENTS - GAS EQUIPMENT
VENTING SYSTEM NOT PROVIDED. When the
manufacturer of a Product Approved side wall horizontally
vented gas fueled equipment does not provide the parts
for venting the ue gases, but identies “special venting
systems”, the following requirements shall be satised by
the manufacturer:
5. The referenced “special venting system” instructions shall
be included with the appliance or equipment installation
instructions; and
6. The “special venting systems” shall be Product Approved by
the Board, and the instructions for that system shall include
a parts list and detailed installation instructions.
(e) A copy of all installation instructions for all Product
Approved side wall horizontally vented gas fueled
equipment, all venting instructions, all parts lists for venting
instructions, and/or all venting design instructions shall
remain with the appliance or equipment at the completion
of the installation.
48
Furnace
ELECTRICAL
Line Voltage (Measure L1 to N and N to Ground Voltage) L - N
N - G
Secondary Voltage (Measure Transformer Output Voltage) R - C
Blower Amps
BLOWER EXTERNAL STATIC PRESSURE
Return Air Static Pressure IN. W.C.
Supply Air Static Pressure IN. W.C.
Total External Static Pressure (Ignoring +/- from the reading above, add total here) IN. W.C.
TEMPERATURES
Return Air Temperature (Dry bulb / Wet bulb) DB °F WB °F
DB °F WB °F
Heating Supply Air Temperature DB °F
Temperature Rise DB °F
Delta T (Difference between Supply and Return Temperatures) DB °F
GAS PRESSURES
Gas Inlet Pressure IN. W.C.
Gas Manifold Pressure (Low Fire) IN. W.C.
Gas Manifold Pressure (High Fire) IN. W.C.
Gas Type (NG) = Natural Gas / (LP) = Liquid Propane
Additional Checks
Check wire routings for any rubbing
Check for kinked pressure switch tubing.
Check flue elbow for alignment and clamp tightness.
Check screw tightness on blower wheel.
Check factory wiring and wire connections.
Check product for proper clearances as noted by installtion instructions
°F to °C formula: (°F - 32) divided by 1.8 = °C °C to °F formula: (°C multiplied by 1.8) + 32 = °F
Model Number
Serial Number
Cooling Supply Air Temperature (Dry bulb / Wet bulb)
49
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50
THIS PAGE IS LEFT INTENTIONALLY BLANK.
51
THIS PAGE IS LEFT INTENTIONALLY BLANK.
52
19001 Kermier Rd. Waller, Tx 77484
www.goodmanmfg.com•www.amana-hac.com
© 2021 Goodman Manufacturing Company, L.P.
is a registered trademark of Maytag Corporation or its related companies and is used under license. All rights
reserved.
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Please ll out the feedback form on one of the following links:
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®
Brand Products: (hp://www.goodmanmfg.com/about/contact-us).
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®
Brand Products: (hp://www.amana-hac.com/about-us/contact-us).
You can also scan the QR code on the right for the product brand
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PRODUCT REGISTRATION
Thank you for your recent purchase. Though not required to get the protection of
the standard warranty, registering your product is a relatively short process, and
entitles you to additional warranty protection, except that failure by California and
Quebec residents to register their product does not diminish their warranty rights.
For Product Registraon, please register as follows:
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Brand products: (hps://www.goodmanmfg.com/product-registraon).
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®
Brand products: (hp://www.amana-hac.com/product-registraon).
You can also scan the QR code on the right for the product brand
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