North America Products
IMPORTANT NOTE:
Read this manual carefully before
installing or operating your new
air conditioning unit. Make sure to
save this manual for future reference.
EN
Installation Manual
Safety precutions & Installation
AIR CONDITIONER
AIR-HANDLER
KIDF/KOIF FIT PRO SERIES
SAFETY PRECAUTIONS
ACCESSORIES
INDOOR UNIT INSTALLATION
REFRIGERANT PIPING CONNECTION
INSTALLATION OF ELECTRIC AUXILIARY HEAT MODULE
(ONLY FOR HEAT FUNCTION MODELS)
CONFIRMATION OF INDOOR UNIT
OUTDOOR UNIT INSTALLATION
WIRING
SPECIFICATION
AIR EVACUATION
NOTE ON ADDING REFRIGERANT
TEST RUN
02
17
21
23
27
31
44
43
45
46
07
06
01
Inside you’ll find many helpful hints on how to use and maintain your air conditioner properly. Just a
little preventive care on your part can save you a great deal of time and money over the life of your air
conditioner. These instructions may not cover every possible condition of use, so common sense and
attention to safety is required when installing, operating and maintaining this product.
Read this manual
INSTALLATION MANUAL
WARNING
The signal word indicates a hazard with a medium level of risk which, if not avoided,
may result in death or serious injury.
CAUTION
The signal word indicates a hazard with a low degree of risk which, if not avoided,
may result in minor or moderate injury.
NOTICE
The signal word indicates important information (e.g. damage to property),
but not danger.
The following safety guidelines are intended to prevent unforeseen risks or damage from
unsafe or incorrect operation of the appliance. Please check the packaging and appliance
on arrival to make sure everything is intact to ensure safe operation. If you find any
damage, please contact the retailer or dealer. Please note modifications or alterations to
the appliance are not allowed for your safety. Unintended use may cause hazards and loss
of warranty claims.
Read these operating instructions carefully and attentively before using/commissioning the
unit and keep them in the immediate vicinity of the installation site or unit for later use!
Intended Use
Explanation of Symbols
SAFETY PRECAUTIONS
02
WARNING
This appliance is not intended for use by persons(including children) with reduced physical, sensory
or mental capabilities, or lack of experience and knowledge, unless they have been given supervision
or instruction concerning use of the appliance by a person responsible for their safety. Children
should be supervised to ensure that they do not play with the appliance.
ELECTRICAL WARNINGS
•
The product must be properly grounded at the time of installation, or electrical shock may occur.
CAUTION
• Turn o the air conditioner and disconnect the power if you are not going to use it for a long time.
• Make sure that water condensation can drain unhindered from the unit.
• Do not operate the air conditioner with wet hands. This may cause electric shock.
• Do not use device for any other purpose than its intended use.
• Do not climb onto or place objects on top of the outdoor unit.
•
•
Do not allow the air conditioner to operate for long periods of time with doors or windows open,
or if the humidity is very high.
As with any mechanical equipment, contact with sharp sheet metal edges can result in personal
injury. Take care while handling this equipment and wear gloves and protective clothing.
• All wiring must be properly arranged to ensure that the control board cover can close properly. If
the control board cover is not closed properly, it can lead to corrosion and cause the connection
points on the terminal to heat up, catch fire, or cause electrical shock.
•
For all electrical work, follow all local and national wiring standards, regulations, and the
Installation Manual. Connect cables tightly, and clamp them securely to prevent external forces
from damaging the terminal. Improper electrical connections can overheat and cause fire, and may
also cause shock. All electrical connections must be made according to the Electrical Connection
Diagram located on the panels of the indoor and outdoor units.
WARNINGS FOR PRODUCT USE
•
If an abnormal situation arises (like a burning smell), immediately turn o the unit and disconnect
the power. Call your dealer for instructions to avoid electric shock, fire or injury.
•
Do not
insert fingers, rods or other objects into the air inlet or outlet. This may cause injury, since
the fan may be rotating at high speeds.
•
Do not
use flammable sprays such as hair spray, lacquer or paint near the unit. This may cause
fire or combustion.
•
Do not
store gasoline or flammable substances near air conditioner. Emitted gas may collect
around the unit and cause explosion.
•
Do not
•
•
Do not
expose your body directly to cool air for a prolonged period of time.
Do not
allow children to play with the air conditioner. Children must be supervised around the
unit at all times.
install your air conditioner in a wet room such as a bathroom or laundry room. Too
much exposure to water can cause electrical components to short circuit.
•
•
•
If the air conditioner is used together with burners or other heating devices, thoroughly ventilate
the room to avoid oxygen deficiency and carbon monoxide build up.
In certain environments, such as kitchens, server rooms, etc., the use of specially designed
air-conditioning units is highly recommended.
Improper installation, adjustment, alteration, service or maintenance can cause property damage,
personal injury or loss of life. Installation and service must be performed by a licensed professional
HVAC installer or equivalent, service agency, or the gas supplier.
03
•
•
•
•
•
•
•
•
•
•
•
•
•
If connecting power to fixed wiring, an all-pole disconnection device which has at least 3mm
clearances in all poles, and have a leakage current that may exceed 10mA, the residual current
device(RCD) having a rated residual operating current not exceeding 30mA, and disconnection
must be incorporated in the fixed wiring in accordance with the wiring rules.
WARNINGS FOR PRODUCT INSTALLATION
WARNINGS FOR CLEANING AND MAINTENANCE
Installation must be performed by an authorized dealer or specialist. Defective installation can
Excessive Weight Hazard - Use two or more people when moving and installing the unit. Failure
to do so can result in back or other type of injury.
cause water leakage, electrical shock, or fire.
Installation must be performed according to the installation instructions. Improper installation
can cause water leakage, electrical shock, or fire.
(In North America,installation must be performed in accordance with the requirement of NEC
and CEC by authorized personnel only.)
Contact an authorized service provider for repair or maintenance of this unit. This appliance
shall be installed in accordance with national wiring regulations.
Only use the included accessories, parts, and specified parts for installation. Using non-standard
parts can cause water leakage, electrical shock, fire, and can cause the unit to fail.
Install the unit in a firm location that can support the unit’s weight. If the chosen location cannot
support the unit’s weight, or the installation is not done properly, the unit may fall and cause
serious injury and damage.
Do not turn on the power until all work has been completed.
When moving or relocating the air conditioner, consult experienced service technicians for
disconnection and reinstallation of the unit.
How to install the appliance to its support, please read the information for details in "indoor unit
installation" and "outdoor unit installation" sections .
For units that have an auxiliary electric heater, do not install the unit within 1 meter (3 feet) of
any combustible materials.
Do not install the unit in a location that may be exposed to combustible gas leaks. If combustible
gas accumulates around the unit, it may cause fire.
Install drainage piping according to the instructions in this manual. Improper drainage may
cause water damage to your home and property.
•
Do not clean the air conditioner with combustible cleaning agents. Combustible cleaning agents
can cause fire or deformation.
• Turn o the device and disconnect the power before cleaning. Failure to do so can cause electrical
shock.
•
Do not
clean the air conditioner with excessive amounts of water.
04
NOTE ABOUT FUSE SPECIFICATIONS
NOTE
The air conditioner’s circuit board (PCB) may be designed with a fuse to provide overcurrent
protection. This fuse must be replaces with identical component.
The specifications of the fuse, if equipped, are printed on the circuit board, examples of such are
T5A/250VAC and T10A/250VAC.
•
•
•
•
•
•
NOTE ABOUT FLUORINATED GASSES (NOT APPLICABLE TO THE
UNIT USING R290 REFRIGERANT)
This air-conditioning unit contains fluorinated greenhouse gasses. For specific information on the
type of gas and the amount, please refer to the relevant label on the unit itself or the
“Owner's Manual - Product Fiche ” in the packaging of the outdoor unit. (European Union
products only).
Installation, service, maintenance and repair of this unit must be performed by a certified
technician.
Product uninstallation and recycling must be performed by a certified technician.
When the unit is checked for leaks, proper record-keeping of all checks is strongly recommended.
The allowed static pressure range of the air conditioner on site is 0-0.80 in-H2O (0-200 Pa).
The data below represents the static pressures at full required air flow used for AHRI testing.
The maximum functional total external static pressure can not exceed 0.80 in WC or 200 Pa. The
airflow reduces significantly beyond 0.80 in WC or 200Pa. System design should allow for the
increased resistance of filters as they become dirty.
05
PRESSURE
(Before Jan,1,2023)
PRESSURE
(After Jan,1,2023)
0.5 in-H2O(125Pa) 0.5 in-H2O(125Pa) 0.5 in-H2O(125Pa)
0.10 in-H2O(25Pa) 0.15 in-H2O(37Pa) 0.20 in-H2O(50Pa)
Foam
ACCESSORIES
The air conditioning system comes with the following accessories. Use all of the installation
parts and accessories to install the air conditioner. Improper installation may result in water
leakage, electrical shock and fire, or equipment failure.
Accessories (Packed with the indoor unit)
Accessories-optional (Packed with the outdoor unit)
NOTICE
The wired system control functions as an IR receiver for the handheld remote, if the remote is not used
it must be retained with the indoor unit to adjust parameters, and for troubleshooting.
06
Braze to flare adapter (optional)
Flare nut (optional)
Cable ties
Wired remote controller
Battery
Remote controller
Manual
Drain fitting
Gasket
Braze to flare adapter
INDOOR UNIT INSTALLATION
Select the installation location of indoor units
CAUTION
Install the indoor and outdoor units, cables and wires at least 1m (3-1/5′) from televisions or radios
to prevent static or image distortion. Depending on the appliances, a 1m (3-1/5′) distance may not
be sucient.
The Indoor unit must be electrically grounded per national and local electrical code.
Securely install the indoor unit on a structure
that can support its weight. If the structure is
too weak, the unit may fall and cause personal
injury, unit and property damage, or death.
DO NOT install the indoor
unit in a moist environment.
Excessive moisture can
corrode the equipment,
electrical components, and
cause electrical shorts.
DO NOT
LOCATIONS:
WARNING
Areas with oil
drilling or
fracking.
Coastal areas
with high salt
content in the air.
Areas where there may be
detergent or other corrosive
gases in the air, such as
bathrooms, or laundry rooms.
Areas with strong
electromagnetic
waves.
Areas that
store flammable
materials or gas.
Danger of explosion. Keep
flammable materials and vapors,
such as gasoline, away from
air handler.
WARNING
MUST BE INSTALLED IN A LOCATION
THAT MEETS THE FOLLOWING REQUIREMENTS:
Enough room for
installation and
maintenance.
Enough room for the
connecting pipe
and drainpipe.
Areas where the air
inlet and outlet may
be obstructed.
Place air handler so that heating
elements are at least 18 inches (46 cm) above the
floor for a garage installation. Failure to follow these
instructions can result in death, explosion, or fire.
The structure that the equipment is suspended
from must support the weight of the indoor unit.
A stable position
At least 18in(46cm)
spaciousness
Must support the weight of
the indoor unit.
07
Preparation and precautions for indoor unit installation
NOTICE
Please apply sealant around the
places where the wires, refrigerant
pipes and condensate pipes enter
the cabinet.
Use duct tape or flexible sealant to
seal closed anyspace around the
holes where the drain lines exit the
cabinet. Warm air must not be
allowed to enter throughany gaps
or holes in the cabinet.
•
•
Remove all accessories and packing
in the air outlet before installation.
•
Air outlet
There must be an airtight seal between the bottom of the air handler and the return air plenum. Use
fiberglass sealing strips, foil duct tape, caulking, or equivalent sealing method between the plenum and
the air handler cabinet to ensure a tight seal. Return air must not be drawn from a room where this air
handler or any gas-fueled appliance (i.e., water heater), or carbon monoxide-producing device (i.e., wood
fireplace) is installed.
WARNING
WARNING
Recommended Distances Between the Indoor Unit
The distance between the mounted indoor unit should
meet the specifications illlustrated in the following diagram.
Horizontal installations
Minimum clearance
of 25.4mm/1”all sides
Flexible
duct collar
The outlet side pipe length 1.5m/59”.
or
Vertical installations
Fixing instructions: When installed vertically (upward
or downward), the lower end of the air outlet needs to
be connected to the L-shaped metal air duct and
fastened by screws.
08
Coil compartment
(Access panel Removed)
Upflow
drain pan
Horizontal drain pan
(unit: mm/inch)
(unit: mm/inch)
mm
Model(Btu/h)
Dimensions
Model(Btu/h)
Model A Model B
12K~24K
Length of A
Length of B
Length of C
406.4
Model(Btu/h) 18K-24K 30K-48K 60K
Length of W
Length of D
Length of t
25.4 25.4
1
1 1
20 23
20
20
508
25.4
20
508
508
16
mm
inch
mm
inch
mm
inch
495.3
584.2
Length of D
Length of E
Length of A
Length of B
Length of C
Length of D
Length of E
30K~48K 60K 60K
Dimensions
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
1143
45
533
21
445
17-1/2
400
15-3/4
260
10-1/4
1245
49
533
21
534
21-1/50
490
19-5/16
260
10-1/4
1346
53
533
21
622
24-1/2
580
22-27/32
260
10-1/4
1245
49
533
21
534
21-1/50
490
19-5/16
260
10-1/4
Indoor unit parts installation size
Recommended size of filter
A
B
C
09
NOTICE FOR DUCT CONNECTIONS：
More Requirements
Air supply and return may be handled in one of several ways best suited to the installation (See table
for dimensions for duct inlet and outlet connections). The vast majority of problems encountered
with combination cooling systems can be linked to improperly designed or installed duct systems.
It is therefore highly important to the success of an installation that the duct system be properly
designed and installed. Use flexible duct collars to minimize the transmission of vibration/noise into
the conditioned space. Where return air duct is short, or where sound could potentially to be a
problem, sound absorbing liner should be used inside the duct.
Duct must be insulated where it runs through an unconditioned space during the cooling season.
The use of a vapor barrier is recommended to prevent absorption of moisture from the surrounding
air into the insulation.
The supply air duct connection should be properly sized by use of a transition to match unit opening.
All ducts should be suspended using flexible hangers and never fastened directly to the structure.
This unit is not designed for nonducted (freeblow) applications.
Duct work should be fabricated and installed in accordance with local and/or national codes.
•
•
•
•
•
Installation Position Requirements
Horizontal installationsVertical installations
It should be insulated
and use a Vapor Barrier.
It should be Flexible
suspension mounted
and not fastened
It should be fabricated
and installed in
accordance with local
and/or national codes.
It should be assembled
accordance to the
instructions.
10
The units can be installed in a vertical (down and up)and Horizontal(right and left) configuration.
Horizontal left
Horizontal right
Upflow Downflow
A field-fabricated secondary drain pan, with a drain pipe to the outside of the building, is required in
all installations over a finished living space or in any area that may be damaged by overflow from the
main drain pan. In some localities, local codes may require a secondary drain pan for any horizontal
installation.
CAUTION
Selection of installation direction
Dierent installation directions
Airflow direction of dierent installation directions
HorizontalVertical up
At least
18in(46cm)
NOTICE
For horizontal installation，
a secondary drain pan（not
supplied）must be installed.
•
NOTICE
Vertical up and horizontal left installation does not need to change the direction of evaporator.•
11
Connecting the wire and pipes(pipes and drainage pipes)
Down flow and horizontal right instructions
Please follow these steps to perform Vertical down installation and Horizontal right installation:
Open the upper cover.
Step 1
Open the cover of the electronic control box.
Step 2
Remove the filter
door, then take the
filter o.
Step 1
Remove the upper
cover assembly.
Step 2
Remove evaporator
cover plate.
Step 3
Remove the
bottom cover first.
Then remove
the second
cover plate.
Connect the wire according to the wiring diagram.
Step 3
Connect the pipes and install the drainage pipes.
Step 4
The unit may be installed in one of the upflow, downflow, horizontal left or horizontal right orientations.
NOTICE
12
Step 4
Unplug temperature sensors T1, T2, T2A, T2B and
electronic expansion valve (EEV) from the
control board.
T1: Room temperature sensor
T2: Evaporator central sensor plug
T2A: Evaporator intput sensor plug
T2B: Evaporator output sensor plug
Step 5
Remove T1, T2, T2A, T2B, EEV sensor
wire ties.
Step 6
NOTE
13
18-24K model
30-48K model
60K model
T2A
T2
EEV
T2B
T1
T2
T2A
T2B
T1
T2
T2A
T2B
T1
EEV
EEV
Indication of the position of each
temperature sensor of the evaporator:
T2
T2A&T2B
T1
EEV
T2A and T2B are only available for
some models.
Take out the evaporator and drain pan and rotate 180°
(when your equipment need to be vertical
downed configuration).
Step 6
Reinstall T1, T2, T2A, T2B sensor plugs and
electronic expansion valve (EEV) and tie up
the sensor wires.
Cut the foam
gasket.
Remove knockouts
as shown in the
figure.
Hook the wire into
the buckle and go
down from the wire
slot.
Replace foam
gasket over wires.
Step 9
Step 7
Adjust the mounting parts position according to the
direction of equipment.
Step 8
Reinstall the evaporator and drain pan.
NOTICE
The wire body needs to pass through the
wire groove from the drain pan and be
stuck on the hook of the drain pan.
14
CAUTION FOR ALL PIPES INSTALLATION
The evaporator is assembled in place.
Step 10
Connect the wire according to the wiring diagram.
Step 13
Reassenble the upper cover and Reinstall the filter,
filter cover plate.
Step 14
Connect the pipes and install the drainage pipes.
Step 15
Use cable ties to fix the room temperature
sensor as shown in the figure.
Step 11
Reinstall evaporator cover plate.
Step 12
• Insulate all piping to prevent condensation, which could lead to water damage.
• The drainpipe is used to drain water away from the unit. If the drainpipe is bent or installed incorrectly,
water may leak and cause a water-level switch malfunction.
• In HEAT mode, the outdoor unit will discharge water. Ensure that the drain hose is placed in an
appropriate area to avoid water damage and icy conditions on walkways.
• DO NOT pull the drainpipe forcefully. This could disconnect it.
15
cable
ties
NOTICE
If installed above a finished living space, a secondary drain pan (as required by many building codes),
must be installed under the entire unit and its condensate drain line must be routed to a location such
that the user will see the condensate discharge.
NOTICE
NOTE ON DRAINPIPE INSTALLATION
•
•
These units operate with a negative pressure
at the drain connections and a drain trap is
required. The trap needs to be installed as
close to the unit as possible. Make sure the
top of the trap is below the connection to
the drain pan to allow complete drainage
of the pan.
Primary drain
Installation requires pvc pipe or other suitable material per local and national codes, which can be
obtained at your local hardware store or dealer.
NOTICE ON PURCHASING PIPES
After removal of drain pan plug(s), check drain hole(s) to verify that drain opening is fully open and
free of any debris. Also check to make sure that no debris has fallen into the drain pan during
installation that may plug up the drain opening. Seal around the exiting drain pipe, liquid and suction
lines to prevent infiltration of humid air.
On units of this type, where the blower “draws” rather than “blows” air through the coil, traps must be
installed in the condensate drain lines (primary and auxiliary, if used). Traps prevent the blower from
drawing air through the drain lines into the air supply.
Vertical Installations
Horizontal runs must also have an anti-siphon
air vent(standpipe) install ahead of the horizontal
run to eliminate air trapping.
Vertical discharge
• The Figure shows how to trap or plug all
drains during vertical discharge.
• The Figure shows how to trap or plug all
drains during right-hand discharge.
• The seal plug are supplied as accessories
and should be screwed tightly only by hand.
• Incorrect installation could cause water to
flow back into the unit and flood
The drainpipe outlet should be at least
5cm(1.9in) above the ground. If it touches the
ground, the unit may become blocked
and malfunction.
•
CAUTION
16
Main
drain hole
Overflow
drain hole
WARNING
Ensure that the length of the refrigerant pipe, the
number of bends, and the drop height between the
indoor and outdoor units meets the requirements
shown in the table next to it：
Notes on pipe length and elevation
REFRIGERANT PIPING CONNECTION
All field piping must be completed by a licensed technician and must comply with the local and
national regulations.
• When the air conditioner is installed in a small room, measures must be taken to prevent the
refrigerant concentration in the room from exceeding the safety limit
in the event of refrigerant leakage. If the refrigerant leaks and its concentration exceeds its proper
limit, hazards due to lack of oxygen may result.
• When installing the refrigeration system, ensure that air, dust, moisture or foreign substances do not
enter the refrigerant circuit. Contamination in the system may cause poor operating capacity, high
pressure in the refrigeration cycle, explosion or injury.
• Ventilate the area immediately if there is refrigerant leakage during the installation. Leaked refrigerant
gas is both toxic and may be flammable. Ensure there is no refrigerant leakage after completing the
installation work.
WARNING
Oil trap
Liquid piping
6m/20ft
(<36000Btu/h unit)
10m/32.8ft
(≥36000Btu/h unit)
6m/20ft
(<36000Btu/h unit)
10m/32.8ft
(≥36000Btu/h unit)
Gas piping
Indoor unit/
Outdoor unit
Indoor unit/
Outdoor unit
The maximum length and drop
height based on models.(Unit:m/ft.)
MaxLength of
piping
Maximum drop
height
ft.
98.4
164
213
CAUTION
Oil traps
If oil flows back into the outdoor unit’s
compressor, this might cause liquid
compression or deterioration of oil return.
Oil traps in the rising gas piping can
prevent this.
An oil trap should be installed every
6m(20ft) of vertical suction line riser
(＜36000Btu/h unit). An oil trap should be
installed every 10m(32.8ft) of vertical
suction line riser (≥36000Btu/h unit).
Parts you must
purchase separately.
Consult the dealer
about the proper
pipe size of the unit
you purchased.
Connecting
pipe
assembly
Liquid
side
Φ6.35(1/4in)
Φ9.52(3/8in)
Φ12.7(1/2in)
Φ16(5/8in)
Φ19(3/4in)
Φ22(7/8in)
Gas
side
Name Shape Quantity(PC)
17
Capacity
(Btu/h)
m
30
50
65
ft.
65.6
82
98.4
m
20
25
30
24k/30k
36k/48k/60k
18k
18
DO NOT DEFORM PIPE
WHILE CUTTING
Connection Instructions—Refrigerant Piping
CAUTION
Insulate both the gas and liquid piping to prevent condensation.•
Step 1: Cut pipes
When preparing refrigerant pipes, take
extra care to cut and flare them properly.
This will ensure ecient operation and
minimize the need for future maintenance.
Measure the distance between the
indoor and outdoor units.
Using a pipe cutter, cut the pipe a
little longer than the measured
distance.
Make sure that the pipe is cut at a
perfect 90° angle.
Step 2: Remove burrs
Burrs can aect the air-tight seal of refrigerant piping
connection. They must be completely removed.
Hold the pipe at a downward angle to prevent
burrs from falling into the pipe.
Using a reamer or deburring tool, remove all burrs
from the cut section of the pipe.
Step 3: Flare pipe ends
Be extra careful not to damage, kink, or
deform the pipe while cutting. This will
drastically reduce the heating
performance.
•
•
•
Proper flaring is essential to achieve an airtight seal.
After removing burrs from cut pipe, seal the ends
with PVC tape to prevent foreign materials from
entering the pipe.
Sheath the pipe with insulating material.
Place flare nuts on both ends of pipe. Make sure
they are facing in the right direction, because you
can’t put them on or change their direction after
flaring.
•
•
•
Remove PVC tape from ends of pipe when ready
to perform flaring work.
•
•
•
Oblique Rough Warped
90°
Pipe
Reamer
Point down
Flare nut
Copper pipe
18K/24K
24K/30K/
36K/48K
60K
18K/24K
24K(Hyper
Heat)/30K/
36K/48K
60K
Liquid
Gas
Liquid
Gas
Liquid
Gas
Liquid
Gas
Liquid
Gas
Liquid
Gas
3/8
3/4
3/8
3/4
3/8
7/8
3/8
5/8
3/8
3/4
3/8
7/8
3/8are→3/8braze
3/4are→3/4braze
3/8are→3/8braze
3/4are→3/4braze
3/8are→3/8braze
7/8are→7/8braze
3/8are→3/8braze
5/8are→3/4braze
5/8are→3/4are
3/8are→3/8braze
3/4are→3/4braze
3/8are→3/8braze
7/8are→7/8braze
Air Handler
Unit Model
Air Handler Unit
Connection(in.flare)
Adapter Required at Air
Handler Unit(in.flare to braze)
Outdoor
Model
Outdoor Unit
Connection
(in.flare)
Adapter Required at Outdoor
Unit(in.flare to flare or braze)
NOTICE
MINIMUM BEND RADIUS
Connect the copper pipes to the indoor unit first,
then connect it to the outdoor unit. You should
first connect the low-pressure pipe, then the
highpressure pipe.
When connecting the flare nuts, apply a thin
coat of refrigeration oil to the flared ends of
the pipes.
Align the center of the two pipes that you will
connect.
Tighten the flare nut snugly by hand.
Using a wrench, grip the nut on the unit tubing.
While firmly gripping the nut, use a torque
wrench to tighten the flare nut according to
the torque values in above table.
32-39 N.m
49-59 N.m
57-71 N.m
67-101 N.m
85-110 N.m
(180-200kgf.cm)
(320-390kgf.cm)
(490-590kgf.cm)
(570-710kgf.cm)
(670-1010kgf.cm)
(850-1100kgf.cm)
Flare shape
Tightening
torque
Pipe
gauge
Min. Max.
Flare dimension(A)
(Unit:mm/lnch)
CAUTION
Ensure to wrap insulation around the piping.
Direct contact with the bare piping may
result in burns or frostbite.
• Make sure the pipe is properly connected.
Over tightening may damage the bell
mouth and under tightening may lead to
leakage.
PIPING EXTENSION BEYOND FLARE FORM
Step 4: Connect pipes
•
•
•
•
•
Clamp flare from on the end of the pipe. The end
of the pipe must extend beyond the flare form.
•
Place flaring tool onto the form.
Turn the handle of the flaring tool clockwise
until the pipe is fully flared.
•
After connecting the copper pipes to the
indoor unit, wrap the power cable, signal
cable and the piping together with
binding tape.
•
•
•
Flare form
Pipe
Remove the flaring tool and flare form, then
inspect the end of the pipe for cracks and even
flaring.
Outdoor unit
Liquid side piping
(Smaller diameter)
(Bigger
Torque wrench
NOTICE
Use both a spanner and a torque wrench
when connecting or disconnecting pipes to/from
the unit.
Carefully bend the tubing in the middle
according to the diagram below.
DO NOT bend the tubing more than 90°
or more than 3 times.
NOTICE
DO NOT intertwine or cross the signal cable
with any other wiring.
Use appropriate tool
min-radius 10cm(3.9 )
19
CAUTION
Check to make sure there is no refrigerant
leak after completing the installation work.
If there is a refrigerant leak, ventilate the area
immediately and evacuate the system (refer
to the Air Evacuation section of this manual).
•
•
•
Thread this pipeline through the wall and
connect it to the outdoor unit.
Insulate all the piping, including the valves of
the outdoor unit.
Open the stop valves of the outdoor unit to
start the flow of the refrigerant between the
indoor and outdoor unit.
Braze connection
Air-Handler Air Conditioners Refrigerant Piping Connection
Correct Refrigerant piping Connecting installation methods
Plan 1 Plan 2
20
Foam Tape
After the unit is installed,
wrap the piping and brass
fitting with foam tape.
NOTICE
Only use matched modules certified for use
with model. Please refer to the Electric
Auxiliary Heat Model specification for
additional details to ensure proper selection
and installation.
INSTALLATION OF ELECTRIC
AUXILIARY HEAT MODULE
(ONLY FOR HEAT FUNCTION MODELS)
Installation must be performed by an licensed contractor. Please make necessary precaution when
performing the installation operation.
NOTICE
Accessories Preparations for Installation
Electric Auxiliary Heat Module
installation and Wiring Operation
Model size selection
Name NameQuantity Quantity
Manual
Foam gasket
Screws
2
7
1
1
1
1
Silicone breaker cover
Electric auxiliary
heating wiring diagram
Circuit breaker label
For installations requiring supplemental heating,
the optional Electric Auxiliary Heat Module is
available in sizes from 3kW to 25kW to
accommodate appropriate sizing given the
specific heat load and electrical requirements of
each installation. Please refer to the table below
for selection of available sizes of each model,
being sure to avoid improper matching.
Before installation, please confirm the electric
auxiliary heat module and supplied accessories
are complete and free of any damage. Do not
attempt to install if damage is present.
Open the
upper cover.
Step 1
Use tools to
remove the
knock-out holes
of upper cover.
Step 2
21
Remove the terminal block and power wires,
loosen the screws, and remove the electric
auxiliary heating cover.
Step 3
Tighten the mounting screws.
Step 5
Wire according to the wiring nameplate.
Apply the wiring diagram to the inside cover
wiring is completed for future reference and
maintenance.
Step 6
Install the upper cover,and the silicone breaker
cover.
Step 7
After installing the electric auxiliary heat module,
apply the circuit breaker label near the silicone
breaker cover that was just applied.
Step 8
screws.
Install the electric auxiliary heating assembly
the front, and note that the support assembly
must lock into the support holes in the back
of the cabint.
Step 4
shell
assembly
hole
This figure shows
the top view
perspective
22
Number of power cord
grounding screws
Number of power
cord groups
BRANCH CIRCUIT
MIN WIRE SIZE
AWG*
MIN CKT AMPSVOITS-PHASE
Rated
current(A)
UNIT
SIZE
FUSE/CKT
BKR AMPS
Number of relays
Number of
circuit breakers
Specifications
After the electric heating wiring is connected, please confirm before power on:
Check all wiring and ensure secure connection of all wiring.
Ensure that wire size is properly selected per NEC or local codes.
Use copper wire only to connect unit. If other than uncoated (non-plated) 75°C copper wire (solid wire
for 10 AWG and smaller, stranded wire for larger than 10 AWG) is used consult applicable tables of the
National Electric Code (ANSI/NFPA 70).
CONFIRMATION OF INDOOR UNIT
Electric auxiliary heating wiring diagram packed with the accessories.
If branch circuit wire lenght exceeds 100 ft, consult NEC 210-19a to determine maximum wire length.
Use 2% voltage drop.
NOTICE
•
•
Units without electrical heat
NOTICE
The specification may be dierent between dierent models ,please refer to indoor unit ’ s nameplate.
Choose the cable type according to the local electrical codes and regulations. Please choose the
right cable size according to the Minimum Circuit Ampacity indicated on the nameplate of the unit.
23
14#
14#
14#
14#
14#
14#
Auxilliary Heater Electrical Date
24
Electric auxiliary heating wiring diagram
25
Electric auxiliary heating wiring diagram
26
OUTDOOR UNIT INSTALLATION
Select the installation location of outdoor units
Before installing the outdoor unit, you must choose an appropriate location. The following are
standards that will help you choose an appropriate location for the unit.
Install the unit by following local switchs and regulations , there may be dier slightly between
dierent regions.
Near an obstacle that will
block air inlets and outlets.
Near a public street,
crowded areas, or
where noise from the
unit will disturb others.
Near animals or plants that will
be harmed by hot air discharge.
Near any source of
combustible gas
In a location that is exposed
to large amounts of dust.
NOTICE
Proper installation locations meet the following standards:
Firm and solid—the location can
support the unit and will not vibrate.
Where snowfall is anticipated,
take appropriate measures to
prevent ice buildup and coil
damage.
Good air circulation
and ventilation.
Meets all spatial requirements shown in Installation
Space Requirements above.
The outdoor unit must be installed on risers of at least
15cm(6in) in height or per local code to get unit above
local mean snow fall.
Noise from the unit will
not disturb other people.
30cm(12in)
on left
60cm(24in)
on right
60cm(24in)
above
Front view Top view
30cm(12in)
from back wall
200cm(79in)
in front
DO NOT install unit in the following locations:
Strong
wind
Strong
wind
Strong
wind
Wind Baffle
If the unit is frequently exposed to heavy rain or snow:
Build a shelter above the unit to protect it from the rain or snow. Be careful not to obstruct air flow
around the unit.
90° angle to the
direction of the wind
Build a wind Bae
to protect the unit
Build a shelter
to protect the unit
If the unit is exposed to heavy wind:
Install unit so that air outlet fan is at a 90° angle to the direction of the wind. If needed, build a barrier
in front of the unit to protect it from extremely heavy winds. See Figures below.
CAUTION:
SPECIAL CONSIDERATIONS FOR EXTREME WEATHER
Shelter
15cm(6in)
27
Install drain fitting(Heat pump unit only)
Base pan hole of
outdoor unit
Find out the base pan hole of outdoor unit.
Step 1：
Seal
Fit the rubber seal on the end of the drain fitting that will connect to the
outdoor unit.
Insert the drain fitting into the hole in the base pan of the unit. The drain fitting
will click in place.
Connect a drain hose extension (not included) to the drain fitting to redirect
water from the unit during heating mode.
●
●
●
Step 2：
IN COLD CLIMATES
In cold climates, make sure that the drain hose is as vertical as possible to ensure swift water drainage.
If water drains too slowly, it can freeze in the hose and flood the unit.
28
Outdoor Unit Types and Specifications
The outdoor unit can be anchored to the ground or to a wall-mounted bracket with bolt(M10). Prepare
the installation base of the unit according to the dimensions below.
Anchor outdoor unit
W
H
W
H
D
A
B
Front view Top view
L
H
300 cm / 118” or more
A
60 cm / 23.6”
or more
150 cm / 59”
or more
25 cm / 9.8”
or more
25 cm / 9.8”
or more
Rows of series installation
L ≤ H
L ≤ 1/2H
L A
25 cm / 9-13/16in or more
1/2H < L ≤ H 30 cm / 11-13/16in or more
L > H
Can not be installed
The relations between H, A and L are as follows.
(unit: mm/inch)
Outdoor Unit Dimensions
W
mm inch mm inch mm inch mm inch mm inch
H D
Mounting Dimensions
A B
805 31731-11/16 554 21-13/16 330 13 511 20-1/8 12-1/2
946 40337-1/4 810 31-29/32 410 16-5/32 673 26-1/2 15-7/8
952 40437-1/2 1333 52-1/2 415 16-11/32 634 24-35/36 15-29/32
890 35 673 26-1/2 342 13-15/32 663 26-1/8 354 13-15/16
29
If you will install the unit on the ground
or on a concrete mounting platform,
DO THE FOLLOWING:
Mark the positions for four expansion bolts
based on dimensions chart.
●
Pre-drill holes for expansion bolts.
●
Hammer expansion bolts into the pre-drilled
holes.
●
Remove the nuts from expansion bolts, and
place outdoor unit on bolts.
●
Put washer on each expansion bolt, then
replace the nuts.
●
Using a wrench, tighten each nut until snug.
●
Place a nut on the end of each expansion bolt.
●
WARNING
WHEN DRILLING INTO CONCRETE,
EYE PROTECTION IS RECOMMENDED
AT ALL TIMES.
If you will install the unit on a
wall-mounted bracket,
DO THE FOLLOWING:
●
●
●
●
●
●
●
●
Mark the position of bracket holes based on
dimensions chart.
Pre-drill the holes for the expansion bolts.
Place a washer and nut on the end of each
expansion bolt.
Thread expansion bolts through holes in
mounting brackets, put mounting brackets
in position, and hammer expansion bolts into
the wall.
Check that the mounting brackets are level.
Carefully lift unit and place its mounting feet
on brackets.
Bolt the unit firmly to the brackets.
If allowed, install the unit with rubber isolator
pads o reduce vibrations and noise.
Make sure that the wall is made of solid
brick, concrete, or of similarly strong
material. The wall must be able to support
at least four times the weight of the unit.
CAUTION
30
NOTICE
WIRING PRECAUTIONS
BEFORE PERFORMING ANY ELECTRICAL WORK, READ THESE WARNINGS.
WARNING
WARNING
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
All wiring must comply with local and national
electrical codes, regulations and must be installed
by a licensed electrician.
All electrical connections must be made according
to the Electrical Connection Diagramlocated on
the panels of the indoor and outdoor units.
If there is a serious safety issue with the power
supply, stop work immediately. Explain your
reasoning to the client, and refuse to install the
unit until the safety issue is properly resolved.
Power voltage should be within 90-110% of rated
voltage. Insucient power supply can cause
malfunction, electrical shock, or fire.
Installation of an external surge suppressor at the
outdoor disconnect is recommended.
If connecting power to fixed wiring, a switch or
circult breaker that disconnects all poles and
has a contact separation of at least 1/8in (3mm)
must be incorporated in the fixed wiring. The
qualified technician must use an approved
circuit breaker or switch.
Only connect the unit to an individual branch
circuit. Do not connect another appliance to that
Circuit.
Make sure to properly ground the air conditioner.
Every wire must be firmly connected. Loose
wiring can cause the terminal to overheat,
resulting in product malfunction and possible fire.
Do not let wires touch or rest against
refrigerant tubing, the compressor, or any
moving parts within the unit.
To avoid getting an electric shock, never
touch the electrical components soon
after the power supply has been turned
o. After turning o the power, always
wait 10 minutes or more before you touch
the electrical components.
Make sure that you do not cross your
electrical wiring with your signal wiring.
This may cause distortion, interference or
possibly damage to circuit boards.
No other equipment should be connected
to the same power circuit.
Connect the outdoor wires before
connecting the indoor wires.
BEFORE PERFORMING ANY
ELECTRICAL OR WIRING WORK,
TURN OFF THE MAIN POWER TO
THE SYSTEM.
31
Wiring overview
The diagrams are for explanation purpose only. Your machine may be slightly dierent. The acyual
diagram shall prevail.
1. You must first choose the right cable size.
Remove the electric cover of the outdoor unit.
If there is no cover on the outdoor unit, take o
the bolts from the maintenance board and
remove the protection board.
Stranded wire requires u-lugs or ring
terminals to be crimped onto the ends of
the wire.
2. Using wire strippers, strip the rubber
jacketfrom both ends of the signal cable to
reveal approximately 15cm (5.9”) of wire.
3. Strip the insulation from the ends.
4.
OUTDOOR UNIT WIRING
Step 1: Prepare the cable for connection.
Step 2: Remove the electric cover.
Step 3: Connect the u-lugs to
the terminals
NOTICE
When connecting the wires, strictly
follow the wiring diagram found inside the
electrical box cover.
Choose the cable type according to the
local electrical switchs and regulations.
Please choose the right cable size
according to the Minimum Circuit Ampacity
indicated on the nameplateof the unit.
●
●
●
Match the wire colors/labels with the labels on
the terminal block. Firmly screw the u-lug of
each wire to its corresponding terminal.
4. Clamp down the cable with the cable clamp.
5. Insulate unused wires with electrical tape.
Keep them away from any electrical or metal
parts.
6. Reinstall the cover of the electric control box.
1. Remove the wire cover from the unit by
loosening the 3 screws.
2. Remove caps on the conduit panel.
3. Mount the conduit tubes(not included) on the
caonduit panel.
4. Properly connect both the power supply and
low voltage lines to the corresponding
terminals on the terminal block.
5. Ground the unit in accordance with local switchs.
6. Be sure to size each wire allowing several
inches longer than the required length for wiring.
In North America
GG
Wire Cover
Over
1-9/16"
(40mm)
Terminal block
Conduit panel
Connecting cable
Power supply cord
Please select the appropriate through-hole according
to the diameter of the wire.
WARNING
Cover
Screw
ISOLATE THE POWER SUPPLY LEADS AND
COMMUNICATION LEADS BY THE STRAIN
RELIF AND KEEP POWER SUPPLY LEADS
AWAY FROM COMMUNICATION LEADS.
Before performing any electrical or wiring work, turn o the main power to the system.
WARNING
32
CLASS 2
Outdoor Unit A
Outdoor Unit B
L1 L2
TO POWER SOURCE
TO POWER SOURCE
L2
L1
OPTIONAL
B W D
R C Y1 Y2 L
CLASS 2
B W D
R C Y1 Y2 L
WARNING
ISOLATE THE POWER SUPPLY LEADS
AND COMMUNICATION LEADS BY THE
STRAIN RELIF AND KEEP POWER SUPPLY
LEADS AWAY FROM COMMUNICATION
LEADS.
INDOOR UNIT WIRING
• While connecting the wires, please strictly follow the wiring diagram.
• The refrigerant circuit can become very hot. Keep the interconnection cable away from the
copper tube.
CAUTION
Using a screwdriver,remove the cover of the
electric control box on your indoor unit.
Step 1: Prepare the cable for connection.
Step 2: Open the front panel of the
indoor unit.
Step 3: Connect the wires to the
terminals.
Using wire strippers, strip the insulating jacket
from both ends of the signal cable to reveal
about 15cm (5.9”) of the wire.
Strip the insulation from the ends of the wires.
1.
2.
1.
2.
3.
4.
5.
6.
Thread the power cable and the signal cable
through the wire outlet
Match the wire colors/labels with the labels
on the terminal block. Firmly screw the wires
of each wire to its corresponding terminal.
Refer to the Serial Number and Wiring
Diagram located on the cover of the electric
control box.
Clamp down the cable with the cable clamp.
The cable must not be loose or pull on the
u-lugs.
Reattach the electric box cover.
Clamp down the cable with the cable clamp.
The cable must not be loose or pull on the
u-lugs.
Reattach the electric box cover
Wiring diagram
Class2 wire
Power
wire
• While connecting the wires, please strictly
follow the wiring diagram.
• The refrigerant circuit can become very
hot. Keep the interconnection cable away
from the copper tube.
CAUTION
33
TO POWER SOURCE
OR OUTDOOR
Scenario Controller Indoor unit
Connecon between Indoor
Outdoor unit
Klimaire AHU
DIP switch
Klimaire ODU
DIP switch
SW1-1 SW1-4 S1-2
Scenario 1
(Recommend)
Klimaire Wired
controller (Standard)
Klimaire AHU
RS485: S1/S2
Klimaire ODU
OFF
(Default)
OFF
(Default)
OFF
(Default)
Scenario 2 24V Thermostat
Klimaire AHU
RS485: S1/S2 ON
OFF
(Default)
OFF
(Default)
Scenario 3 24V Thermostat 24V: R/C/B/Y1/Y2/G/W ON ON ON
Klimaire Fit Pro AHU wiring connecon & deep switch configuraon guide
Note: Need to set the dip switch before the
unit power on.
Klimaire AHU
Klimaire ODU
Klimaire ODU
Scenario 1: Standard and Recommend
Klimaire Wired
controller (Standard)
Klimaire AHU Indoor unit Klimaire Outdoor unit
Packed with the Indoor Unit
Open the
rear cover
HA/HB
S1/S2
HA/HB
S1/S2
Use Existing Wire or Factory supplied 4 Pin cable
Please refer to the wiring nameplate for the wiring method. Do not connect the power cord to the
communication line, as this may damage the system.
SPECIFIC WIRING METHODS
WARNING
Connection method A: Connection method B:
Refer to the wiring method of internal and
external machine communication and wired
controller as follows:
To use a 24V thermostat, you need to refer to the
following wiring:
34
Scenario 2:
24V Thermostat
Klimaire AHU Indoor unit
Klimaire Outdoor unit
SW1- 1 dip switch to be
"ON"
S1/S2
Nest 24V thermostat as a example
24V
24V
S1/S2
Note: Need to set the dip switch before the
unit power on.
S4-1 Default on, W1 and W2
shorted for single stage Aux heat
operation. Turn o to separate stages.
Scenario 3:
24V Thermostat
Klimaire AHU Indoor unit
Klimaire Outdoor unit
Nest 24V thermostat as a example
SW1-1 dip
switch to be
"ON"
S
W1- 4 dip
switch to be
"ON"
S1- 2 dip
switch to be
"ON"
24V
24V
24V
24V
Note: Need to set the dip switch before the unit power on.
S4-1 Default on, W1 and W2
shorted for single stage Aux heat
operation. Turn o to separate stages.
35
S4-1 Default on, W1 and W2
shorted for single stage Aux heat
operation. Turn o to separate stages.
S4-2 Default on， DH function o.
Turn switch o to activate DH
function.
S4-1 Default on, W1 and W2
shorted for single stage Aux heat
operation. Turn o to separate stages.
S4-1 Default on, W1 and W2
shorted for single stage Aux heat
operation. Turn o to separate stages.
S4-2 Default on， DH function o.
Turn switch o to activate DH
function.
S4-2 Default on， DH function o.
Turn switch o to activate DH
function.
S4-1 Default on, W1 and W2
shorted for single stage Aux heat
operation. Turn o to separate stages.
S4-2 Default on， DH function o.
Turn switch o to activate DH
function.
The fault warning:
Alarm output:
Humidifier control:
Optional function wiring:
Condensate overflow switch:
The unit will accommodate a remote condensate
overflow switch. To enable, remove jumper J1,
and connect the installer provided condensate
overflow device to CN5 per below. When an
overflow condition is present, the device should
open connection signaling the unit to turn o
the system.
An alarm output (CN33) can be utilized if actions
are required when a fault is present. This is a
passive outlet port, so you will need to input a
voltage signal. The relay is normally-open for
normal operation, and closed when a fault
condition is active.
To connect a humidifier, utilize the passive signal
“WORK” output (CN23) port as well as the G and
C wires on the controller, and wire the humidistat
and humidifier per above wiring diagram. When
the fan is running, the CN23 relay will be closed,
which will allow power to the humidifier when
the humidistat is below humidity setpoint. If the
thermostat or zone controller has an HUM
interface, connect the humidifier directly to the
HUM and C ports.
36
Dehumidification control wiring
UV,fresh air or ion generator wiring
Dehumidification control requires external
Humidistat at DH and R. Set S4-2 as OFF. When
the humidity rises and exceeds the set value of
the Humidistat, the 24V signal of DH changes
to 0V, the cooling system starts the
dehumidification operation, and the air volume
drops to 80% of the nominal cooling air volume.
The WORK port is linked with the fan. When the
fan is running, the relay is closed; if an active 24V
signal is required, it can be directly connected to
the G and C ports.
Control logic
LED display
Indoor unit connector
Outdoor unit connector
Purpose
Purpose
Connector
Connector
The control displays unit status as well as any
active fault codes on the LED display. If the unit
is functioning normally, the LED will display
current temperature setpoint. When a fault code
is active, the display will flash quickly the active
fault code. Please refer to the fault code table
located in the troubleshooting section of the
manual for detailed fault code information.
37
Defrost control
DIP switch definitions
38
Function
Rotary
switch
Function DIP switch settings: Function combination table of SW1-1 and SW1-4:
Indoor unit dial code
The 24V thermostat mode needs to refer
to the following settings:
NOTICE: The SW4 DIP switch is only for Certified service technicians to debug and use, please do not touch it.
39
Control typeSW1
Free match Free match
Full system
Full system
Stand alone
Wired
controller
24V
Thermostat
24V
Thermostat
Stand alone or full system
000 is the default 000/001/010/
011/100/101/110/111,internal
machines with dierent abilities,
electric heating and PSC
classification for use.
No.
Dial
Code
Control
Scenario
Function ON OFF Note
1 SW1-2 1,2 Anti-cold blow protection option NO [Default] YES
2 SW1-3 1,2,3 Single cooling / heating and and cooling options Cooling [Default] Cooling & Heating
3 SW2-1 1
Compressor Running (demand working with heat
pump+ Electric heat)
Compressor slower speed [Default] Faster Compressor
Only aects compressor
and W1
4 SW2-1 2
Temperature dierential to activate first stage
auxiliary heat(the GAP of T1 and Ts),Wire
controller demand with heat pump+Electric heat
working together
2
（1 ） [Default] 4 （2 ）
5 SW2-2 2 Electric heat on delay YES [Default]NO
6 SW2-3 2 Electric auxiliary heating delay to start time 30 minutes [Default] 15 minutes Based on SW2-2 is ON
7 SW2-4 2 Compressor/Auxiliary heat outdoor ambient lockout
The compressor will
not operate if the
outdoor temperature
is lower than the
temperature
represented by S3
[Default] The heater will not
operate if the outdoor
temperature is greater
than the temperature
represented by S3
SW2-4 and S3 need to
working together
8
Rotary
Switch S3
2
Set outdoor temperature Limitation
(for auxiliary heating or compressor)
0 means that the temperature protection is not
turned on, the dial range is 1 through F, 1 equals -4°F
and it increased up to 46°F based on table “A”
9 SW3-1 1
Maximum continuous runtime allowed before
system automatically stages up capacity to satisfy
set point. This adds 1 to 5°F to the user set point
in the calculated control point to increase capacity
and satisfy user set point
30 minutes [Default] 90 minutes
10 SW3-2 1
Cooling and heating Y/Y2 temperature
dierential adjustment.
Compressor slower speed [Default] Faster Compressor Only aects compressor
11 SW3-3 1
Compressor Running (demand working with heat
pump+ Electric heat)
Compressor slower speed [Default] Faster Compressor
Only aects compressor
and W2
12 SW3-3 2
Temperature dierential to activate
second stage auxiliary heating(the GAP of T1 and
Ts)Wire controller demand with heat pump+Electric
heat working together
4
（2 ） [Default] 6 （3 ）
13 SW3-4 1,3
Fan speed of cooling mode when
24V Thermostat is applied for.
Turbo High
14 SW4 1,2,3 Electric heat nominal CFM adjustment
Available settings are 000/001/010/011. Each digit corresponds an indiviual swith
position.
For example [SW4-1 OFF, SW4-2 ON, SW4 -3 OFF] = 010
See table 11 for the corresponding CFM adjustment
15 S4-1 1,3 Default ON
[Default] For single stage supplemental heat,
W1 and W2 are connected
For dual stage supplemental heat,
W1 and W2 are
controlled independently.
16 S4-2 1,3 DH function selection
[Default] Dehumidi fication
control not available
Dehumidification feature is enabled
through
thermostat
Outdoor unit DIP Switch setting
Metering device location
Address DIP switch:
Address dialing S1+S2: When the user uses the
centralized controller, the address dialing is
required.
Network address: The address silkscreen is NET
address, which is composed of a 16-bit address
rotary code S2 plus a two-digit DIP switch S1
[Set during engineering installation, no network
function does not need to be set]
When S2 is 00 (the dialing code is not connected),
the network address value is the value of S2;
When S2 is 10 (corresponding to the switch of the
hardware connected to the 10K resistor), the
network address value is S2 plus 32;
Determined by dial code S2 1-10K 2-5.1K
When S2 is 01 (corresponding to the dial code of
the 5.1K resistor connected to the hardware is
turned on), the network address value is the
value of S2 plus 16;
When S2 is 11 (all dialing codes are on), the
network address value is the value of S2 plus 48.
Dial code selection Website address
Determined by dial code S2 1-10K 2-5.1K
NOTICE
The SW4 DIP switch is only for Certified service technicians to debug and use, please do not touch it.
40
Control Scenario
24V Tstat, S1+S2 1
Wired Controller S1+S2 2
Full 24V 3
Table A
S3 S3 ( ) S3 ( )
0 OFF OFF
1 -4 -20
2 -0 -18
3 3 -16
4 7 -14
5 10 -12
6 14 -10
7 18 -8
8 21 -6
9 25 -4
A 28 -2
B 32 0
C 36 2
D 39 4
E 43 6
F 46 8
41
Air volume table
Capacity
External Static
Pressure Range
Fan speed Electric heater kit
24V thermostat Wired controller
Air
ow
volume
(CFM)
DIP Switch 24V terminal engaged DIP Switch Mode
0 - 0.80 in. w.g.
Cooling Turbo — SW3-4=ON Y2/Y — Cool 618
Cooling High — SW3-4=OFF Y2/Y — Cool 576
Cooling Medium — — Y1 — Cool 529
Cooling Low — — — — Cool 488
Heat Pump Turbo — — — — Heat 565
Heat Pump High — — B+Y2/Y, W — Heat 541
Heat Pump Medium — — Y1 — Heat 435
Heat Pump Low — — — — Heat 400
Electric heater kit
0(Default)
Electric heater kit
0(Default)
10KW
SW4-1=OFF
SW4-2=OFF
SW4-3=OFF
W1, W2, AUX
SW4-1=OFF
SW4-2=OFF
SW4-3=OFF
Heat + AUX, AUX 653
Electric heater kit 1 10KW, 8KW
SW4-1=OFF
SW4-2=OFF
SW4-3=ON
W1, W2, AUX
SW4-1=OFF
SW4-2=OFF
SW4-3=ON
Heat + AUX, AUX 624
Electric heater kit 2
Electric heater kit 1
Electric heater kit 2
8KW
SW4-1=OFF
SW4-2=ON
SW4-3=OFF
W1, W2, AUX
SW4-1=OFF
SW4-2=ON
SW4-3=OFF
Heat + AUX, AUX 594
Electric heater kit 3
Electric heater kit 3
Electric heater kit
0(Default)
Electric heater kit 1
Electric heater kit 2
Electric heater kit 3
5KW, 3KW
SW4-1=OFF
SW4-2=ON
SW4-3=ON
W1, W2, AUX
SW4-1=OFF
SW4-2=ON
SW4-3=ON
Heat + AUX, AUX 565
0 - 0.80 in. w.g.
Cooling Turbo — SW3-4=ON Y2/Y — Cool 824
Cooling High — SW3-4=OFF Y2/Y — Cool 759
Cooling Medium — — Y1 — Cool 694
Cooling Low — — — — Cool 629
Heat Pump Turbo — — — — Heat 788
Heat Pump High — — B+Y2/Y, W — Heat 753
Heat Pump Medium — — Y1 — Heat 641
Heat Pump Low — — — — Heat 524
15KW
SW4-1=OFF
SW4-2=OFF
SW4-3=OFF
W1, W2, AUX
SW4-1=OFF
SW4-2=OFF
SW4-3=OFF
Heat + AUX, AUX 871
15KW, 10KW
SW4-1=OFF
SW4-2=OFF
SW4-3=ON
W1, W2, AUX
SW4-1=OFF
SW4-2=OFF
SW4-3=ON
Heat + AUX, AUX 841
10KW, 8KW
SW4-1=OFF
SW4-2=ON
SW4-3=OFF
W1, W2, AUX
SW4-1=OFF
SW4-2=ON
SW4-3=OFF
Heat + AUX, AUX 818
5KW
5KW
SW4-1=OFF
SW4-2=ON
SW4-3=ON
W1, W2, AUX
SW4-1=OFF
SW4-2=ON
SW4-3=ON
Heat + AUX, AUX 788
0 - 0.80 in. w.g.
Cooling Turbo — SW3-4=ON Y2/Y — Cool 988
Cooling High — SW3-4=OFF Y2/Y — Cool 894
Cooling Medium — — Y1 — Cool 806
Cooling Low — — — — Cool 712
Heat Pump Turbo — — — — Heat 918
Heat Pump High — — B+Y2/Y, W — Heat 876
Heat Pump Medium — — Y1 — Heat 665
Heat Pump Low — — — — Heat 453
15KW
SW4-1=OFF
SW4-2=OFF
SW4-3=OFF
W1, W2, AUX
SW4-1=OFF
SW4-2=OFF
SW4-3=OFF
Heat + AUX, AUX 1088
15KW, 10KW
SW4-1=OFF
SW4-2=OFF
SW4-3=ON
W1, W2, AUX
SW4-1=OFF
SW4-2=OFF
SW4-3=ON
Heat + AUX, AUX 1029
10KW, 8KW
SW4-1=OFF
SW4-2=ON
SW4-3=OFF
W1, W2, AUX
SW4-1=OFF
SW4-2=ON
SW4-3=OFF
Heat + AUX, AUX 976
SW4-1=OFF
SW4-2=ON
SW4-3=ON
W1, W2, AUX
SW4-1=OFF
SW4-2=ON
SW4-3=ON
Heat + AUX, AUX 918
18K（1.5 Ton ）
24K（2 Ton ）
30K（2.5 Ton ）
42
Air volume table
Capacity
External Static
Pressure Range
Fan Speed Electric heater kit
24V thermostat Wired controller
Airowfl
volume
(CFM)
DIP Switch 24V terminal engaged DIP Switch Mode
36K
（3 Ton ）
0 - 0.80 in. w.g.
— SW3-4=ON Y2/Y — Cool
1188
— SW3-4=OFF Y2/Y — Cool
1082
— — Y1 — Cool
971
— — — — Cool
865
— — — — Heat
1112
— — B+Y2/Y, W — Heat
1059
— — Y1 — Heat
794
— — — — Heat
582
20KW
SW4-1=OFF
SW4-2=OFF
SW4-3=OFF
W1, W2, AUX
SW4-1=OFF
SW4-2=OFF
SW4-3=OFF
Heat + AUX, AUX
1306
15KW
SW4-1=OFF
SW4-2=OFF
SW4-3=ON
W1, W2, AUX
SW4-1=OFF
SW4-2=OFF
SW4-3=ON
Heat + AUX, AUX
1241
10KW, 8KW
SW4-1=OFF
SW4-2=ON
SW4-3=OFF
W1, W2, AUX
SW4-1=OFF
SW4-2=ON
SW4-3=OFF
Heat + AUX, AUX
1176
5KW, 8KW
20KW
15KW
10KW, 8KW
8KW
SW4-1=OFF
SW4-2=ON
SW4-3=ON
W1, W2, AUX
SW4-1=OFF
SW4-2=ON
SW4-3=ON
Heat + AUX, AUX
1112
48K
（4 Ton ）
0 - 0.80 in. w.g.
— SW3-4=ON Y2/Y — Cool
1471
— SW3-4=OFF Y2/Y — Cool
1282
— — Y1 — Cool
1094
— — — — Cool
906
— — — — Heat
1471
— — B+Y2/Y, W — Heat
1306
— — Y1 — Heat
1141
— — — — Heat
976
SW4-1=OFF
SW4-2=OFF
SW4-3=OFF
W1, W2, AUX
SW4-1=OFF
SW4-2=OFF
SW4-3=OFF
Heat + AUX, AUX
1741
SW4-1=OFF
SW4-2=OFF
SW4-3=ON
W1, W2, AUX
SW4-1=OFF
SW4-2=OFF
SW4-3=ON
Heat + AUX, AUX
1653
SW4-1=OFF
SW4-2=ON
SW4-3=OFF
W1, W2, AUX
SW4-1=OFF
SW4-2=ON
SW4-3=OFF
Heat + AUX, AUX
1559
SW4-1=OFF
SW4-2=ON
SW4-3=ON
W1, W2, AUX
SW4-1=OFF
SW4-2=ON
SW4-3=ON
Heat + AUX, AUX
1471
60K
（5 Ton ）
0 - 0.80 in. w.g.
— SW3-4=ON Y2/Y — Cool
1806
— SW3-4=OFF Y2/Y — Cool
1582
— — Y1 — Cool
1359
— — — — Cool
1135
— — — — Heat
1659
— — B+Y2/Y, W — Heat
1582
— — Y1 — Heat
1247
— — — — Heat
976
25KW
SW4-1=OFF
SW4-2=OFF
SW4-3=OFF
W1, W2, AUX
SW4-1=OFF
SW4-2=OFF
SW4-3=OFF
Heat + AUX, AUX
2171
15KW, 20KW
SW4-1=OFF
SW4-2=OFF
SW4-3=ON
W1, W2, AUX
SW4-1=OFF
SW4-2=OFF
SW4-3=ON
Heat + AUX, AUX
2029
10KW, 15KW
SW4-1=OFF
SW4-2=ON
SW4-3=OFF
W1, W2, AUX
SW4-1=OFF
SW4-2=ON
SW4-3=OFF
Heat + AUX, AUX
1894
10KW
SW4-1=OFF
SW4-2=ON
SW4-3=ON
W1, W2, AUX
SW4-1=OFF
SW4-2=ON
SW4-3=ON
Heat +
AUX, AUX
1753
Cooling Turbo
Cooling High
Cooling Medium
Cooling Low
Heat Pump Turbo
Heat Pump High
Heat Pump Medium
Heat Pump Low
Electric heater kit
0(Default)
Electric heater kit 1
Electric heater kit 2
Electric heater kit 3
Cooling Turbo
Cooling High
Cooling Medium
Cooling Low
Heat Pump Turbo
Heat Pump High
Heat Pump Medium
Heat Pump Low
Electric heater kit
0(Default)
Electric heater kit 1
Electric heater kit 2
Electric heater kit 3
Cooling Turbo
Cooling High
Cooling Medium
Cooling Low
Heat Pump Turbo
Heat Pump High
Heat Pump Medium
Heat Pump Low
Electric heater kit
0(Default)
Electric heater kit 1
Electric heater kit 2
Electric heater kit 3
NOTICE
The constant airflow volumemotor is applied .So theairflow volume is constantat all ESP within
stated range.
POWER SPECIFICATIONS
43
OUTDOOR UNIT(A)
LINE DIAMETER(AWG)
LINE QUANTITY
LINE QUANTITY
LINE DIAMETER(AWG)
LINE QUANTITY
LINE DIAMETER(AWG)
16 / 16
20 / 20
STD 12
HH 12
MCA
MOCP
STD 12
HH 12
STD 12
HH 10
Std Hyper HT
19 / 20
30 / 35
Std Hyper HT
20 / 23
35 / 35
Std Hyper HT
2+Ground
OUTDOOR-INDOOR
SIGNAL LINE
OUTDOOR UNIT
POWER LINE
THERMOSTAT
SIGNAL LINE
INPUT CIRCUIT FUSE
POWER
(outdoor)
PHASE
FREQUENCY AND VOLT
STD 10
HH 8
STD 8
HH 6
STD 8
HH NA
2+Ground
36K
18K 24K 30K
PHASE
FREQUENCY AND VOLT
OUTDOOR-INDOOR
SIGNAL LINE
48K
60K
OUTDOOR UNIT(A)
LINE DIAMETER(AWG)
LINE QUANTITY
LINE QUANTITY
LINE DIAMETER(AWG)
LINE QUANTITY
LINE DIAMETER(AWG)
POWER
(outdoor)
INPUT CIRCUIT FUSE
OUTDOOR UNIT
POWER LINE
THERMOSTAT
SIGNAL LINE
MCA
MOCP
24 / 41
40 / 50
Std Hyper HT
34 / 42
50 / 50
Std Hyper HT
34 / NA
60 / NA
Std Hyper HT
NOTICE
Cooling and Heating power specifications
Line Diameter Sizing per NFPA 70 (2020), Table 310.15 (B) (16) Based on type NM-B Romex wire.
Other sizing options are possible. Consult NFPA 70 or Licensed Electrician for alternate sizing.
AIR EVACUATION
When opening valve stems, turn the hexagonal wrench until it hits against the stopper. Do not try to
force the valve to open further.
NOTICE
Preparations and precautions
Evacuation Instructions
Air and foreign matter in the refrigerant circuit
can cause abnormal rises in pressure, which can
damage the air conditioner, reduce its eciency,
and cause injury. Use a vacuum pump and manifold
gauge to evacuate the refrigerant circuit, removing
any non-condensable gas and moisture from the
system. Evacuation should be performed upon
initial installation and when unit is relocated.
Connect the charge hose of the manifold gauge
to service port on the outdoor unit’s low
pressure valve.
Connect another charge hose from the manifold
gauge to the vacuum pump.
Open the Low Pressure side of the manifold
gauge. Keep the High Pressure side closed.
Turn on the vacuum pump to evacuate the system.
Run the vacuum for at least 15 minutes, or until
the Compound Meter reads -750 Microns(-10
Pa).
5
Outdoor unit
Compound
gauge
-76cmHg
Low
pressure
valve
High
pressure
valve
Pressure hose
or
Charge hose
Vacuum
pump
Pressure
gauge
Low pressure
valve
Charge
hose
Manifold
Gauge
1.
2.
3.
4.
5.
Close the Low Pressure side of the manifold
gauge, and turn o the vacuum pump.
Wait for 5 minutes, then check that there
has been no change in system pressure.
If there is a change in system pressure, refer
to Gas Leak Check section for information
on how to check for leaks. If there is no
change in system pressure, unscrew the cap
from the packed valve (high pressure valve).
Insert hexagonal wrench into the packed valve
(high pressure valve) and open the valve by
turning the wrench in a 1/4 counterclockwise
turn. Listen for gas to exit the system, then
close the valve after 5 seconds.
Watch the Pressure Gauge for one minute
to make sure that there is no change in
pressure. The Pressure Gauge should read
slightly higher than atmospheric pressure.
Remove the charge hose from the service port.
6.
7.
8.
9.
10.
11.
12.
13.
Flare nut
Cap
valve body
valve stem
Using hexagonal wrench, fully open both the
high pressure and low pressure valves.
Tighten valve caps on all three valves (service
port, high pressure, low pressure) by hand.
You may tighten it further using a torque
wrench if needed.
44
NOTE ON ADDING REFRIGERANT
DO NOT mix refrigerant types.
CAUTION
Some systems require additional charging depending on pipe lengths. The standard pipe length varies
according to local regulations. For example, in North America, the standard pipe length is 7.5m (25’).
In other areas, the standard pipe length is 5m (16‘). The refrigerant should be charged from the service
port on the outdoor unit’s low pressure valve. The additional refrigerant to be charged can be
calculated using the following formula:
45
TEST RUN
Failure to perform the test run may result in unit damage, property damage, or
personal injury.
CAUTION
Before test run
Test run instryctions
A test run must be performed after the entire
system has been completely installed. Confirm
the following points before performing the test:
a) Indoor and outdoor units are properly
installed.
b) Piping and wiring are properly connected.
c) No obstacles near the inlet and outlet of
the unit that might cause poor performance
or product malfunction.
d) Refrigeration system does not leak.
e) Drainage system is unimpeded and draining
to a safe location.
f) Insulation of piping and duct is properly installed.
g) Grounding wires are properly connected.
h) Length of the piping and additional refrigerant
capacity have been recorded.
i) Power voltage is the correct voltage for the
air conditioner
1. Open both the liquid and gas service valves.
2. Turn on the main power switch and allow the
unit to warm up.
3. Set the air conditioner to COOL mode.
4. For the Indoor Unit
a.Double check to see if the room
temperature is being registered correctly.
b.Ensure the manual buttons on the indoor
unit works properly.
c.Check to see that the drainage system is
unimpeded and draining smoothly.
d.Ensure there is no vibration or abnormal
noise during operation.
5. For the Outdoor Unit
a. Check to see if the refrigeration system is
leaking.
b. Make sure there is no vibration or abnormal
noise during operation.
c. Ensure the wind, noise, and water
generated by the unit do not disturb your
neighbors or pose a safety hazard.
6. Drainage Test
a. Ensure the drainpipe flows smoothly. New
buildings should perform this test before
finishing the ceiling.
b. Turn on the main power switch and run the
air conditioner in COOL mode.
c. Check to see that the water is discharged.
It may take up to one minute before the
unit begins to drain depending on the
drainpipe.
d. Make sure that there are no leaks in any of
the piping.
e. Stop the air conditioner. Turn o the main
power switch and reinstall the test cover.
NOTICE
46
If the unit malfunctions or does not operate
according to your expectations, please refer
to the Troubleshooting section of Service
Manual before calling customer service.
47
24V input terminal
Mode Priority G Y1 Y/Y2 B W W1 W2 E/AUX DH/DS/BK Fan speed
Display
OFF / 0 0 0 0 0 0 0 0 * OFF 0
FAN
1 0 0 * 0 0 0 0 * Low 1
Cooling stage 1
6
* 1 0 0 0 0 0 0 1 Mid 2
Cooling stage 2 * * 1 0 0 0 0 0 1 High 3
Dehumidification * 1 0 0 0 0 0 0 0 Low 4
Dehumidification * * 1 0 0 0 0 0 0 Low 5
Heat pump stage 1
5
* 1 0 1 0 0 0 0 1 Mid 6
Heat pump stage 2 * * 1 1 0 0 0 0 1 High
7
Heat pump stage 2 * * * * 1 0 0 0 1 High
Electric heater kit 1
3
* 0 0 * 0 1 0 0 * Turbo
8
Electric heater kit 2 * 0 0 * 0 0 1 0 * Turbo
Electric heater kit 1 and
kit 2
* 0 0 * 0 1 1 0 * Turbo 9
Heat pump stage 1 +
Electric heater kit 1
4
* 1 0 1 0 1 0 0 1 Turbo
10
Heat pump stage 1 +
Electric heater kit 2
* 1 0 1 0 0 1 0 1 Turbo
Heat pump stage 2 +
Electric heater kit 1
* * 1 1 0 1 0 0 1 Turbo
Heat pump stage 2 +
Electric heater kit 1
* * * * 1 1 0 0 1 Turbo
Heat pump stage 2 +
Electric heater kit 2
* * 1 1 0 0 1 0 1 Turbo
Heat pump stage 2 +
Electric heater kit 2
* * * * 1 0 1 0 1 Turbo
Heat pump stage 1 +
Electric heater kit 1 and
kit 2
* 1 0 1 0 1 1 0 1 Turbo
11
Heat pump stage 2 +
Electric heater kit 1 and
kit 2
* * 1 1 0 1 1 0 1 Turbo
Heat pump stage 2 +
Electric heater kit 1 and
kit 2
* * * * 1 1 1 0 1 Turbo
Emergency heat 1 * * * * * * * 1 * Turbo 12
Heating zone control
2
* 1 0 1 0 * * 0 0 Low
13
Heating zone control * * 1 1 0 * * 0 0 Low
Heating zone control * * * * 1 * * 0 0 Low
Heating zone control * 0 0 * 0 1 0 0 0 Low
Heating zone control * 0 0 * 0 0 1 0 0 Low
Heating zone control * 0 0 * 0 1 1 0 0 Low
Note:
1: 24V signal
0: No 24V signal
*: 1 or 0.
The AUU will turn off if the 24V input cannot meet the table.
24V SIGNAL CHART
2190 NW 89 Place, Doral, FL 33172 - USA
Tel: (305)593-8358 Fax (305) 675-2212
www.klimaire.com [email protected]
The Klimaire logo is a registered Trademark of Klimaire Products inc.
Copyright 2023 Klimaire Products Inc.
The design and specifications are subject to change without prior notice for
product improvement. Consult with the sales agency or manufacturer for details.
I1DIF2303
