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3. SAFE INSTALLATION REQUIREMENTS
Installation or repairs made by unqualified persons can
result in hazards to you and others. Installation MUST
conform with local building codes or, in the absence of
local codes, with the ANSI Z223.1 and the National Elec-
trical Code NFPA70-current edition or in Canada the
National Standard CAN/CGA B149-1 and CSA C.22.1 -
Canadian Electrical Code Part 1.
Failure to carefully read and follow all instructions in
this manual could result in furnace malfunction, prop-
erty damage, personal injury and/or death.
The information contained in this manual is intended
for use by a qualified service technician familiar with
safety procedures and equipped with the proper tools
and test instruments.
• Do NOT use this furnace as a construction heater.
• Use only the Type of gas approved for this furnace (See Rating
Plate),
• Do NOT use open flame to test for gas leak.
• Seal supply and return air ducts.
• Check to see that filters are installed correctly and are the proper
type and size.
NOTE: It is the personal responsibility and obligation of the cus-
tomer to contact aqualified installer to ensure that the installation
is adequate and conforms to governing codes and ordinances.
FIRE, EXPLOSION, OR CARBON MONOXIDE POISONING
HAZARDS
Failure to have the furnace inspected and maintained
could result in death, bodily injury, and/or property
damage.
It is recommended that a qualified service technician
check the heat exchanger integrity every two (2) years,
after the first four (4) years of operation.
4. LOCATING THE UNIT
ACCESS PANELS
See FIGURE 1 for a general view of unit and location of access
panels.
CARBON MONOXIDE POISONING HAZARD.
Failure to keep blower door closed could result in
bodily injury and/or death.
Keep blower door closed.
CLEARANCES
The location MUST allow for minimum clearances and should not
be adjacent to a patio or other area where the unit's operating
sound level might be objectionable. The combustion air inlet
openings MUST not be obstructed (see FIGURE 1). In addition,
local codes MUST be observed.
NOTE: Units with built in filter racks ( "C" Chassis 48 x 73 mod-
els), need a 26" minimum clearance at front of unit for removal of
filters. See chart below if unit is going to be placed near combus-
tible construction or materials.
While minimum clearances are acceptable for safety reasons,
they may not allow adequate air circulation around the unit for
proper operation in the cooling mode. Whenever possible, it is de-
sirable to allow additional clearance, especially around the
condenser inlet and discharge openings.
Do NOT install the unit in a location that will permit discharged air
from the condenser to recirculate to the condenser inlet.
REDUCED UNIT LIFE HAZARD
Failure to follow this warning could result in
property damage, personal injury and/or death.
Do NOT operate unit in a corrosive atmosphere con-
taining chlorine, fluorine, or any other corrosive
chemicals.
Minimum Clearances to Combustible Construction
Furnace Plenum ........................................... 2"
Duct Side ........................ 2" (6" on large chassis models)
Condenser Inlet Side ...................................... 30"
Blower Service (Rear) ..................................... 30"
Control Service Side
(Front Combustion Air Inlet) ................... 30"
Clearance between 3 Ft. Overhang
and Top of Unit .............................. 30"
Combustible Base
(Wood or Class A, B or C
roof covering material) ......................... 0"
FIGURE 1
\
I Minimum Clearances and Access Panels
(B Chassis Shown)
I Blower Compartment Panel
Internal Filter Access
from Burner Compartment Side
26" (C Chassis Units)
INSTALLATION
NOTICE
80-00-01
Burner Compartment
Panel
Unit will NOT operate properly unless it is installed level front
to rear and side to side.
The slope MUST NOT be greater than 1/8" per foot (10mm per
meter). For side to side leveling, the drain side MUST always
be lower.
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