Carrier 42KUE036N User manual

Thank you very much for purchasing our air conditioner,Before using your air
conditioner, please read this manual carefully and keep it for future reference.
R22 / R410A Floor and Ceiling
INSTALLATION MANUAL
This manual applies to models :
42KUE036N
42KUE048N
42KUE060N

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installation manual
1. PRECAUTIONS
The safety precautions listed here are divided into two categories.
After completing the installation, make sure that the unit operates
properly during the start-up operation. Please instruct the customer
on how to operate the unit and keep it maintained.Also, inform
customers that they should keep this installation manual along with
the owner's manual for future reference.
Only trained and qualified service personnel should
attempt to install, repair or service the equipment.
Improper installation, repair, and maintenance may result in
electric shocks, short-circuit, leaks, fire or other damage to
the equipment.
CONTENTS PAGE
PRECAUTIONS..............................................................................1
INSTALLATION INFORMATION......................................................2
INSPECTING AND HANDLING THE UNIT.......................................2
ATTACHED FITTINGS....................................................................3
INDOOR UNIT INSTALLATION.......................................................3
INSTALL THE CONNECTING PIPE...................................................6
CONNECT THE DRAIN PIPE............................................................7
WIRING..........................................................................................8
TEST OPERATION..........................................................................8
Install according to this installation instructions.
If installation is defective, it will cause water leakage,
electrical shock and fire.
When installing the unit in a small space, take measures
to prevent refrigerant concentration from exceeding
allowable safety limits in the event of refrigerant leakage.
Contact the place of purchase for more information.
Excessive refrigerant in a closed ambient can lead to oxygen
deficiency.
Use only factory authority accessories, and specified
parts for installation and service.
Install a
t a strong and firm location which is able to
withstand the weight of the unit.
If the strength is not enough or installation is not properly
done, the set will drop to cause injury.
Do not install in wet or excessively humid locations, such
as a laundry area.
Disconnect all power before servicing or repairing the unit.
For electrical work, follow all local standards,
regulations and installation instructions. A dedicated
circuit and disconnect must be used.
If electrical circuit capacity is not enough or defect in
electrical work, it will cause electrical shock fire.
Use properly sized cable and connect tightly and secure
the cable so that no external force will act on the
terminal.
If connections are not correct, it will cause heat-up or
fire at the connection.
Wiring routing must be properly arranged so that control
board cover is fixed properly.
If the supply cord is damaged, it must be replaced by the
manufacturer or its service agent or a similarly qualified
person in order to avoid a hazard.
An all-pole disconnection swith having a contact
separation of at least 3mm in all poles should be
used.
When carrying out piping connection, take care not to
contaminate the refrigeration cycle.
Otherwise, it will cause lower capacity, abnormal high
pressure in the refrigeration cycle, explosion or injury.
Do not modify the length of the power supply cord or use
of extension cord, and do not share the circuit with
other electrical appliances.
Otherwise, it will cause fire or electrical shock.
CAUTION
WARNING
WARNING
If you do not follow these instrutions exactly, the unit may
cause property damage, personal injury or loss of life.
If you do not follow these instrutions exactly, the unit may
cause minor or moderate property damage, personal
injury.
If refrigerant leaks during installation, ventilate the
area immediately.
Toxic gas may be produced if the refrigerant comes into the
place contacting with fire.
The temperature of refrigerant circuit will be high, please
keep the interconnection cable away from the copper
tubing.
After completing the installation work, check for
refrigerant leaks.
Toxic gas may be produced if the refrigerant leaks into the
room and comes into contact with a source of fire, such as a
fan heater or stove.
keep this manual where the operator can easily find them.
Read this manual before starting up the units.
For safety reason the operator must read the following
cautions carefully.
Installation must be performed in accordance with all
applicable requirements of and by authorized personnel only.

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installation manual
Please read this "installation manual" competely before
installing or servicing unit.
The air conditioner must be installed by qualified persons.
When installing the indoor unit or its tubing, please follow
this manual as strictly as possible.
If the air conditioner is installed on a metal part of the
building, it must be electrically insulated according to the
relevant standards to electrical appliances.
When all the installation work is finished, please turn on
the power only after a thorough check.
This manual is subject to change without notification.
2. INSTALLATION INFORMATION
Ground the air conditioner.
Do not connect the ground wire to gas or water pipes,
lightning rod or a telephone ground wire.Inappropriate
grounding may result in electric shocks.
Be sure to install an earth leakage breaker.
Failure to install an earth leakage breaker may result in
electric shocks.
Connect the outdoor unit wires , then connect the indoor
unit wires.
You are not allowed to connect the air conditioner with the
power supply until the wiring and piping is done.
Properly install drain piping to ensure proper drainage
and insulate piping in order to prevent condensation.
Improper drain piping may result in water leakage and
property damage.
Install the indoor and outdoor units, power supply wiring
and connecting wires should be at least 1 meter away
from televisions or radios in order to prevent image
interference or noise.
Depending on the radio waves, a distance of 1 meter may not
be sufficient enough to eliminate the noise.
The unit is not intended for use by young children without
supervision.
Don't install the air conditioner in the following
conditions:
In a flammable environment existing.
In highly corrosive areas.
In unstable power sources.
In kitchen or cooking areas.
There is strong electromagnetic wave existing.
INSTALLATION ORDER
Select the location;
Install the indoor unit;
Install the outdoor unit;
Install the connecting pipe ;
Connect the drain pipe;
Wiring;
Test operation.
CAUTION
3. INSPECTING AND HANDLING THE UNIT
At delivery, the package should be checked and any damage should
be reported immediately to the the service agent.
When handling the unit, take into account the following:
Fragile, handle the unit with care.
Keep the unit upright in order to avoid compressor
damage.
Choose on before hand the path along which the unit is to be
brought in.
Move this unit as originally package as possible.
When lifting the unit , always use protectors to prevent damage
and pay attention to the position of the unit’s centre of gravity.
1
2
3
4
Check for leaks;

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installation manual
4. ATTACHED FITTINGS
Please check whether the following fittings are of full scope. If there are some spare fittings , please restore them carefully.
There is no direct radiation from heat sources.
QUANTITYSHAPENAME
5. Owner's manual
6. Installation manual
7. Remote controller manual
1. Remote controller
2. Remote controller holder
4. Alkaline dry batteries (AM4)
1
1
2
2
1
1
Remote controller & Its Holder
Others
3. Mounting screw(ST2.9× 10-C-H)
1
8. R22 Piston
(NOTE: This part must be used to
replace the defaut R410a throttle
piston when the unit is to match up
with a R22 CDU.)
1
Keep indoor unit, outdoor unit, power supply wiring and
transmission wiring at least 1 meter away from televisions
and radios. This is to prevent image interference and
noise in those electrical appliances. (Noise may be
generated depending on the conditions under which the
electric wave is generated, even if 1 meter is kept.)
5. INDOOR UNIT INSTALLATION
5.1 Installation place
(Refer to Fig.5-1,Fig.5-2 and Table 5-1 for specification.)
The indoor unit should be installed in a location that meets
the following requirements:
CAUTION
Fig.5-1
≥35mm
≥1000mm
mm53≥
mm5
3
≥
There is enough room for installation and maintenance.
The ceiling is level, and its structure can endure the
weight of the indoor unit.
The outlet and the inlet are not impeded, and
outdoor air intrusion is minimal.
The air flow can reach throughout the room.
The connecting pipe and drainpipe could be routed
easily.
There is no direct radiation from heat sources.
CANCEL
LOCK
SETTEMPERATURE(°C)
AUTO
COOL
DRY
HEAT
FAN
HIGH
MED
LOW
TEMP
MODE
SWING TIMER
RESET
ON/OFF FAN
SPEED
VENT
ECONOMIC
RUNNING

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installation manual
Evaluate the ceiling construction and please install with Ø10
hanging screw bolts.
5.2 Install the main body
Fig. 5-2
Fig.5-8
Fig.5-7
STEEL ROOF BEAM STRUCTRUE
Hanging screw bolt
Hanging
bolts
Supporting
angle steel
Install and use directly the supporting angle steel.
Please Refer to Fig.5-3 and Fig.5-4 for the hanging screw
bolts distance
The handling to the ceiling varies from the constructions,
consult the construction person for the specific condition.
Do keep the ceiling flat. Consolidate the roof beam to avoid
possible vibration.
1 Installing Ø10 hanging screw bolts. (4 bolts)
2 Install the indoor unit.
After the selection of installation location, position the refrigerant
pipes, drain pipes,indoor & outdoor wires to the connection
places before hanging up the machine.
Cut off the roof beam.
Strengthen the place that has been cut off, and
consolidatethe roof beam.
The installation of hanging screw bolts.
Fig.5-3
Fig.5-4
Fig.5-5
Fig.5-6
Fig.5-7
WOODEN CONSTRUCTION
NEW CONCRETE BRICKS
FOR ORIGINAL CONCRETE BRICKS
Steel bar
Embedding screw bolt
(Pipe hanging and embedding screw bolt)
(Blade shape
insertion)
(Slide insertion)
Roof beam
Hanging screw bolts
Ceiling
Timber over the beam
Put the square timber traversely overthe roof beam, then install
the hanging screw bolts.
Inlaying or embedding the screw bolts.
Install the hanging hook with expansible bolt into the concrete
deep to 45~50mm to prevent loose.
Remove the side board and the grille.(Refer to Fig. 5-8)
Side board
Grille
Hanging arm
Hanging
screw bolt
B
E. Connecting point of
refrigerant pipe
(D. gas side)
D. Connecting point of
refrigerant pipe
(E. Liquid side)
Drain point
C
D
Hook

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installation manual
Twist off these two parts, then change to the R22 piston.
This end is connected
to the evaporator
Piston
(NOTE: if the unit is to be matched with a R22 CDU, at this
step the throttle piston must be changed to the R22 type). 3. Wall Mounting Installtion
2. Ceiling Installation
Locate the hanging arm on the hanging screw bolt.
(Refer to Fig. 5-10)
Screw nut
Washer
Hanging
screw bolt
Hanging arm
Fig.5-9
02 ～mm52
mm02
Unit dimensions
5.3
Table 5-1 unit：mm
Fig. 5-11
Fig. 5-12
Fig. 5-13
D. Connecting point of
refrigerant pipe
(D.gas side)
Drain point
Downward declicity lower between(1-2)/100
E. Connecting point of
refrigerant pipe
(E. Liquid side)
MODEL
30~48
18~24 AB DEC
1068 675 235 983
60 220675 235 1565
1650
220
1285 675 235 1200 220
36~48 220675 235 1565
1650
Fig.5-10

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installation manual
1
Be sure to with insulating materials cover all the exposed
parts of the flare pipe joints and refrigerant pipe on the
liquid-side and the gas-side. Ensure that there is no gap
between them.
Incomplete insulation may cause water condensation.
CAUTION
6. INSTALL THE CONNECTING PIPE
The Procedure of Connecting Pipes
6.1
CAUTION
All field piping must be provided by a licensed
refrigeration technician and must comply with the
relevant local and national codes.
Do not let air, dust, or other impurities fall in the pipe
system during the time of installation.
The connecting pipe should not be installed until the
indoor and outdoor units have been fixed already.
Keep the connecting pipe dry, and do not let moisture in
during installation.
Execute heat insulation work completely on both sides
of the gas piping and the liquid piping. Otherwise, this
can sometimes result in water leakage.
How to Connect the pipes
Flaring
1
Cut a pipe with a pipe cutter. (Refer to Fig.6-1)
Insert a flare nut into a pipe and flare the pipe.
Refer to Table 4-2 for the dimension of flare nut spaces.
Fig.6-1
90
Lean crude burr
Follow the condensing unit piping recommendations.
2
Bend the tubing in proper way. Do not harm to them.
Connect the indoor unit first, then the outdoor
unit.
Too large torque will harm the bellmouthing and too small
will cause leakage. Please determine the torque
according to Table 6-2.
After the connecting work is finished, be sure to check
that there is no gas leak.
When connecting the flare nut, coat the flare both inside
and outside with either oil or ester oil and initially tighten
by hand 3 or 4 turns before tighting firmly.
Be sure to use both a spanner and torque wrench
together when connecting or disconnecting pipes to /from
the unit.
Bend the pipe with thumb
min-radius 100mm Fig.6-2
Fig.6-3
Fig.6-4
VACUUMING SYSTEM
Stop valve operation introduction
1. Opening stop valve
2. Closing stop valve
1.
2.
1.
2.
3.
Remove the cap and turn the valve
counterclock-wise with the hexagon wrench.
Turn it until the shaft stops.Do not apply excessive force
to the stop valve. Doing so may breakthe valve body, as
the valve is not a backseat type. Always use the special
tool.
Make sure to tighten the cap securely.
Remove the cap and turn the valve clockwise with the
hexagon wrench.
Securely tighten the valve until the shaft contacts the
main bodyseal.
CAUTION
Table 6-1
Ø6.4 8.3 8.7
Ø9.5 12.0
Ø12.7 15.4
Ø15.9
Ø19.1
18.6
22.9
R0.4~0.8
5
4 °
±
2
90
°
± 4
A
65～ 67N.m
(663～ 684 kgf.cm)
45～ 47 N.m
(459～ 480 kgf.cm)
35～ 36 N.m
(357～ 367 kgf.cm)
25～ 26N.m
(255～ 265 kgf.cm)
15～ 16 N.m
(153～ 163 kgf.cm)
(mm) min max
Pipe gauge Tightening torque Flare dimensin A Flare shape
12.4
15.8
19.0
23.3
The bending angle should not exceed 90.
Bending position is preferably in the middle of the
bendable pipe. The larger the bending radius the better it
is.
Do not bend the pipe more than three times.

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installation manual
Make sure to tighten the cap securely.
For the tightening torque, refer to the table below.
Table 6-2
Tightening torque N M (Turn clockwise to close)
Stop
Valve size Shaft (valve body) Cap (Valve lid)
Ø6.4
Hexagonal
wrench 4 mm
Ø9.5
Ø12.7
Ø15.9
Hexagonal
wrench 6 mm
Hexagonal
wrench 6 mm
Ø19.1
Maintenance nut
35～ 40
23～ 27
18～ 22
13.5～ 16.55～ 7
7～ 9
9～ 11
11～ 13
11.5～ 13.9
Additional Refrigerant Charge
6.2
Refrigerant cannot be charged until field wiring has been
completed.
Refrigerant may only be charged after performing the leak
test and the vacuum pumping.
When charging a system, care shall be taken that its
maximum permissible charge is never exceeded, in view of
the danger of liquid hammer.
Charging with an unsuitable substance may cause
explosions and accidents, so always ensure that the
appropriate refrigerant is charged.
Refrigerant containers shall be opened slowly.
Always use protective gloves and protect your eyes when
charging refrigerant.
CAUTION
1
2
4
3
5
6
Fig.6-7
Using the vacuum pump
Loosen and remove the maintenance nuts of stop valves A
and B, and connect the charge hose of the manifold valve to
the service port of stop valve A. (Be sure that stop valves A
and B are both closed)
Connect the joint of the charge hose with the vacuum pump.
Open the Lo-lever of the manifold value completely.
Turn on the vacuum pump. At the beginning of pumping,
loosen the maintenance nut of stop valve B a little to check
whether the air comes in (the sound of the pump changes,
and the indicator of compound meter turns below zero). Then
fasten the maintenace nut.
When the pumping has finished, close the Lo-lever of the
manifold valve completely and turn off the vacuum
pump. Vaccum to 500 microns.
Loosen and remove the cap of stop valves A and B to open
stop valve A and B completely, then fasten the cap.
Disassemble the charge hose from the service port of stop
valve A, and fasten the nut.
7
Fig.6-6
Fig.6-5
Always use a charge hose for service port connection
After tightening the cap, check that no refrigerant leaks
arepresent.
service port
cap
maintenance nut
Stop valve
Gas side
Liquid side
hexagon holeshaftseal
Outdoor
unit
Indoor
unit
A C
D
B
CAUTION
Pressure meterMulti-meter
-76 cmHg
Lo-lever
Lo-lever
Charge hose Charge hose
Vacuum pump
Hi-lever
Manifold valve
CAUTION
The drain pipe of indoor unit must be heat insulated, or it will
condense dew, as well as the connections of the indoor unit.
Hard PVC binder must be used for pipe connection, and make
sure there is no leakage.
7. CONNECT THE DRAIN PIPE
Install the drainpipe of the indoor unit
The outlet has PTI screw bread, Please use sealing materials
and pipe sheath(fitting) when connecting PVC pipes.
With the connection part to the indoor unit, please be noted not
to impose pressure on the side of indoor unit pipes.
When the declivity of the drain pipe downwards is over 1/100,
there should not be any winding.
The total length of the drain pipe when pulled out traversely
shall not exceed 20m, when the pipe is over long, a prop stand
must be installed to prevent winding.
CAUTION

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installation manual
Drainage test
Check whether the drainpipe is clear.
New construction homes should have this test done
prior of walls and ceilings.
Refer to the Fig.7-1 for the installation of the pipes.
1.5m~2m
In sulat in g
material
Downward declivity
lower than 1/100
Bend
Sshape
VP30
Downw ard declivity
lower t han 1/100
Put as deep as possible
( ab out 10 cm)
Fig. 7-1
8. WIRING
The unit shall be installed in accordance with
all standards and regulations.
The air conditioner should use separate power supply
with rated voltage.
The external power supply to the air conditioner should
have ground wiring, which is linked to the ground wiring
of the indoor and outdoor unit.
The wiring work should be done by qualified persons
according to circuit drawing.
An all-pole disconnection device which has at least 3mm
sepaaration distance in all pole and a residual current
device (RCD) with the rating of above 10mA shall be
incorporated in the fixed wiring according to the national
rule.
Be sure to locate the power wiring and the signal wring
well to avoid cross-disturbance.
Do not turn on the power until you have checked
carefully after wiring.
2) The outdoor unit
a. Whether there is vibration or abnormal noise during
operation.
b. Whether the generated wind, noise, or condensed of by
the air conditioner have influenced your neighborhood.
c. Whether any of the refrigerant is leaked.
A protection feature prevents the air conditioner from being
started for approximately 3 minutes after shut off.
CAUTION
1) The indoor unit
a. Whether the switch on the remote controller works well.
b. Whether the buttons on the remote controller works
well.
c. Whether the air flow louver moves normally.
d. Whether the room temperature is adjusted well.
e. Whether the indicator lights normally.
f. Whether the temporary buttons works well.
g. Whether the drainage is normal.
h. Whether there is vibration or abnormal noise during
operation.
I. Whether the air conditioner heats well in the case of the
HEATING/COOLING type.
4
Set the air conditioner under the mode of "COOLING" with
the remote controller, and check the following points. If there
is any malfunction, please resolve it according to the chapter
"Troubleshooting" in the "Owner's Manual".
Test operation
9. TEST OPERATION
The test operation must be carried out after the entire
installation has been completed.
Please confirm the following points before the test operation:
2
1
According to the user's requirement, install the remote
controller frame where the remote controller's signal can
reach the indoor unit smoothly.
3
The power voltage fits the rated voltage of the air
conditioner.
There is no obstacle at the outlet and inlet of the outdoor
and indoor units.
The gas-side and liquid-side stop valves are both opened.
The air conditioner is pre-heated by turning on the power.
The indoor unit and outdoor unit are installed properly.
Tubing and wiring are correctly completed.
The refrigerant pipe system is leakage-checked.
The drainage is unimpeded.
The heating insulation works well.
The ground wiring is connected correctly.
The length of the tubing and the added stow capacity of
the refrigerant have been recorded.

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installation manual
The Specification of Power(independence power supply)
The power supply is included in the power supply above mentioned can be applied to the table.
CAUTION
MODEL
POWER
(indoor)
CIRCUIT BREAKER/FUSE(A)
PHASE
FREQUENCY AND VOLT
18 24 6030~36 42~48
208-240V 208-240V
1Phase 1Phase
208-240V
1Phase
208-240V
1Phase
208-240V
1Phase
20/16 20/16 20/16 20/16 20/16
Table 9-1
Wiring figure
Fig.9-1
Fig.9-2
Ground wiring
Gr ou nd wir ing
Power supply
Switch/Fuse
(Available locally)
Power wiring (indoor)
Power linking wiring (Outdoor)
Strong elec-signal link wiring
Weak elec-signal link wiring
Indoor
Unit Outdoor
Unit
Ground the air conditioner properly in case to affect its anti-interference function
Ground wiring
Gr ou nd wir ing
Power supply
Switch/Fuse
(Available locally)
Power wiring (outdoor)
Power linking wiring (indoor)
Strong elec-signal link wiring
Weak elec-signal link wiring
Indoor
Unit Outdoor
Unit
Ground the air conditioner properly in case to affect its anti-interference function

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installation manual
Fig.9-3
A disconnection device having an air gap contact separation in all active conductors should be
incorporated in the fixed wiring according to the National Wiring Regulation.
When wiring, please choose the corresponding chart, or it may cause damage.The signs of the
indoor terminal block in the some of following fugures may be replaced by L N L1 N1.
Gr ou nd wiring
Gr ou nd wiring
Power supply
Switch/Fuse
(Available locally)
Power wiring (indoor)
Power linking wiring (Outdoor)
We ak el ec- si gn al l ink w irin g
In do o r
Unit Out door
Unit
Power supply
Ground the air conditioner properly in case to affect its
anti-interference function
Fig.9-4
Ground wiring
Gr ou nd wiri ng
Power supply
Switch/Fuse
(Available locally)
Power wiring (outdoor)
Strong elec-signal link wiring
Weak elec-signal link wiring
Indoor
Unit Outdoor
Unit
Ground the air conditioner properly in case to affect its anti-interference function

The design and specifications are subject to change without prior notice for product
improvement.Consult with the sales agency or manufacturer for details