Klimaire FIT PRO Series User manual

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
OUTDOOR UNIT
KIDF/KOIF FIT PRO SERIES

SAFETY PRECAUTIONS
ACCESSORIES
REFRIGERANT PIPING CONNECTION
OUTDOOR UNIT INSTALLATION
WIRING
SPECIFICATION
AIR EVACUATION
NOTE ON ADDING REFRIGERANT
TEST RUN
02
11
15
20
21
22
23
07
06
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
01

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
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.
02

WARNINGS FOR PRODUCT USE
• If an abnormal situation arises (like a burning smell), immediately turn off 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.
WARNINGS FOR CLEANING AND MAINTENANCE
•Do not clean the air conditioner with combustible cleaning agents. Combustible cleaning agents
can cause fire or deformation.
• Turn off 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.
CAUTION
• Turn off 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.
• 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.
03

Do not share the electrical circuit with other appliances. This equipment requires a dedicated
electrical circuit.
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.
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.
The product must be properly grounded at the time of installation, or electrical shock may occur.
ELECTRICAL WARNINGS
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
WARNINGS FOR PRODUCT INSTALLATION
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.
Unit must be properly supported and secured to prevent tipping of unit.
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.
04

TAKE NOTE OF FUSE SPECIFICATIONS
The air conditioner’s circuit board (PCB) is designed with a fuse to provide overcurrent protection.
This fuse must be replaces with identical component.
The specifications of the fuse 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.
05

2
Flare-to-braze adapter(some models)
Name Shape Quantity
1
1
Drain fitting
Gasket
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)
06

The Maximum Length And Drop
Height Based on Models. (Unit: m/ft.)
• 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 flammable. Ensure there is no refrigerant
leakage after completing the installation work.
Notes on pipe length and elevation
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 following table:
Type of model Capacity
(Btu/h)
Length of
piping
Maximum drop
height
North America,
Australia and the EU
frequency conversion
Split Type.
<15K 25/82 10/32.8
≥15K - <24K 30/98.4 20/65.6
≥24K - <36K 50/164 25/82
≥36K - ≤60K 65/213 30/98.4
Safety Precautions
WARNING
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).
07
REFRIGERANT PIPING CONNECTION

3/8flare 3/8braze
7/8flare 7/8braze
3/8flare 3/8braze
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)
18K/24K
24K/30K/36K/48K
60K
Liquid
Gas
Liquid
Gas
Liquid
Gas
3/8flare 3/8braze
3/4flare 3/4braze
3/8flare 3/8braze
3/4flare 3/4braze
3/8flare 3/8braze
7/8flare 7/8braze
3/8
3/4
3/8
3/4
3/8
7/ 8
18K/24K
60K
24K(Hyper
Heat)/30K/
36K/48K
Liquid
Gas
Liquid
Gas
Liquid
Gas
3/8
5/8
3/8
3/4
3/8
7/ 8
5/8flare 3/4flare
3/8flare 3/8braze
3/4flare 3/4braze
5/8flare 3/4braze
Name Shape Quantity(PC)
The correct connecting
pipes are included with
your equipment.
Connecting pipe
assembly
Liquid side
Gas side
6. 35( 1/ 4i n)
 9. 52( 3/8in)
 16( 5/8in)
 12.7( 1/2in)
 19( 3/4in)
 22( 7/8in)
08

DO NOT DEFORM PIPE
WHILE CUTTING
Connection Instructions—Refrigerant Piping
CAUTION
The branching pipe must be installed horizontally. An angle of more than 10° may cause malfunction.
DO NOT install the connecting pipe until both indoor and outdoor units have been installed.
Insulate both the gas and liquid piping to prevent condensation.
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•
Step 1: Cut pipes
When preparing refrigerant pipes, take
extra care to cut and flare them properly.
This will ensure efficient 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 affect 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, dent, or
deform the pipe while cutting. This will
drastically reduce the heating
•
•
•
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
09

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
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•
•
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•
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.
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.
Use care when bending pipe, do not
kink pipe.
NOTICE
DO NOT intertwine signal cable with other
wires. While bundling these items together.
DO NOT intertwine or cross the signal cable
with any other wiring.
Use appropriate tool
min-radius 10cm(3.9 )
10
Outdoor unit
Liquid side piping
(Smaller diameter)
(Bigger
Torque wrench

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 differ slightly between
different 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 Baffle
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)
11

12
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.
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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.

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
13

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:
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●
●
●
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●
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
14

WIRING PRECAUTIONS
BEFORE PERFORMING ANY ELECTRICAL WORK, READ THESE WARNINGS.
WARNING
WARNING
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●
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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 Diagram located 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. Insufficient power supply can cause
malfunction, electrical shock, or fire.
Installation of an external surge suppressor at the
outdoor disconnect is recommended.
Power must be connected, 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
off. After turning off 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.
Connect the outdoor wires before
connecting the indoor wires.
BEFORE PERFORMING ANY
ELECTRICAL OR WIRING WORK,
TURN OFF THE MAIN POWER TO
THE SYSTEM.
15

1. You must first choose the right cable size.
Remove the electric cover of the outdoor unit.
Stranded wire requires u-lugs or ring
terminals to be crimped onto the ends of
the wire.
2. Using wire strippers, strip the jacket from
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 codes.
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
CLASS 2
Outdoor Unit A
Cover
Screw
Outdoor Unit B
ISOLATE THE POWER SUPPLY LEADS AND
COMMUNICATION LEADS BY THE STRAIN
RELIF AND KEEP POWER SUPPLY LEADS
AWAY FROM COMMUNICATION LEADS.
L1 L2
TO POWER SOURCE
TO POWER SOURCE
L2
L1
OPTIONAL
Before performing any electrical or wiring work, turn off the main power to the system.
WARNING
16
B W D
R C Y1 Y2 L
CLASS 2
B W D
R C Y1 Y2 L

Please refer to the wiring nameplate for the wiring method. Do not connect 24V AC to S1 - S2, as
this will damage the system.
This is the preferred method of control with
the communicating control, Klimaire indoor and
outdoor unit. 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:
When using a 24V thermostat, please refer to the
non-communicating wiring diagrams that follow:
Connection method C:
24V connection Dip Switch setting as
shown in the picture:
ON
1 2 3 4
Outdoor Unit
Only Mode
CN6
TO 24V THERMOSTAT
S1
R C Y1 Y2 L
S2 B W D
S1
24V communication
24V must never be connected to S1 – S2. All wiring
must be in compliance with the above scenarios.
Incorrect wiring will cause irreversible damage
to control.
S1-2 dip
switch to
be “ON”
SPECIFIC WIRING METHODS
WARNING
Connection method A:
Connection method B:
NOTICE
This equipment uses B functionality. This
terminal is energized for heating functionality.
Please ensure that thermostat configuration
is set up for B functionality.
Note: These methods are for use with a Klimaire
outdoor unit and a third party indoor unit
or cased coil and gas furnace.
NOTICE
The use of shielded communication or
thermostat wire is not required, but
is recommended where separation from high
voltage conductors can not be maintained, or
in areas with high electrical noise.
The shield and drain conductor must be
grounded at the outdoor unit and stripped
back and taped at the indoor unit. Grounding
at both ends results in an increase of
noise transmitted onto the signal wires.
17

Scenario Controller Indoor unit Connecton 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 connecon & deep witch configuraraon 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

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.