LG UU36WH User manual

P/NO : MFL40910618
www.lg.com
INSTALLATION MANUAL
AIR CONDITIONER
• Please read this installation manual completely before installing the product.
• Installation work must be performed in accordance with the national wiring
standards by authorized personnel only.
• Please retain this installation manual for future reference after reading it
thoroughly.
TYPE : High Efficiency Inverter
ENGLISH ITALIANO ESPAÑOL FRANÇAIS DEUTSCH

Single A Air Conditioner Installation Manual
CONTENTS
Safety Precautions ..............................................................................................3
Installation of Outdoor Unit................................................................................6
Wiring Connection.............................................................................................10
Connecting Pipes ..............................................................................................13
Leakage test and Evacuation ...........................................................................17
Test running .......................................................................................................19
Self-diagnosis Function....................................................................................21
Installation Guide at the Seaside .....................................................................22
2Air Conditioner

To prevent the injury of the user or other people and property damage, the following instructions
must be followed.
■Be sure to read before installing the air conditioner.
■Be sure to observe the cautions specified here as they include important items related to safety.
■Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
■The meanings of the symbols used in this manual are as shown below.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
■Installation
Be sure not to do.
Be sure to follow the instruction.
Safety Precautions
Always perform grounding.
• Otherwise, it may cause
electrical shock.
Donʼt use a power cord, a
plug or a loose socket which
is damaged.
• Otherwise, it may cause a fire
or electrical shock.
For installation of the product,
always contact the service
center or a professional
installation agency.
• Otherwise, it may cause a fire,
electrical shock, explosion or
injury.
Securely attach the electrical
part cover to the indoor unit
and the service panel to the
outdoor unit.
• If the electrical part cover of the
indoor unit and the service
panel of the outdoor unit are not
attached securely, it could result
in a fire or electric shock due to
dust, water, etc.
Always install an air leakage
breaker and a dedicated
switching board.
• No installation may cause a fire
and electrical shock.
Do not keep or use flammable
gases or combustibles near
the air conditioner.
• Otherwise, it may cause a fire
or the failure of product.
Ensure that an installation frame of the
outdoor unit is not damaged due to use for a
long time.
• It may cause injury or an accident.
Do not disassemble or repair the product
randomly.
• It will cause a fire or electrical shock.
Installation Manual 3
Safety Precautions
ENGLISH

4Air Conditioner
Safety Precautions
Do not install the product at a place that there
is concern of falling down.
• Otherwise, it may result in personal injury.
Use caution when unpacking and installing.
• Sharp edges may cause injury.
Take the power plug out if
necessary, holding the head
of the plug and do not touch
it with wet hands.
• Otherwise, it may cause a fire
or electrical shock.
Do not use the power cord
near the heating tools.
• Otherwise, it may cause a fire
and electrical shock.
Do not open the suction
inlet of the indoor/outdoor
unit during operation.
• Otherwise, it may electrical
shock and failure.
Do not allow water to run
into electrical parts.
• Otherwise, it may cause the
failure of machine or electrical
shock.
Hold the plug by the head
when taking it out.
• It may cause electric shock
and damage.
Never touch the metal parts
of the unit when removing
the filter.
• They are sharp and may
cause injury.
Do not share the outlet with
other appliances.
• It will cause an electric shock
or a fire due to heat
generation.
Do not use the damaged
power cord.
• Otherwise, it may cause a fire
or electrical shock.
Do not modify or extend the
power cord randomly.
• Otherwise, it may cause a fire
or electrical shock.
Take care so that the power
cord may not be pulled
during operation.
• Otherwise, it may cause a fire
or electrical shock.
Unplug the unit if strange
sounds, smell, or smoke
comes from it.
• Otherwise, it may cause
electrical shock or a fire.
Keep the flames away.
• Otherwise, it may cause a fire.
Do not step on the indoor/outdoor unit and
do not put anything on it.
• It may cause an injury through dropping of the
unit or falling down.
Do not place a heavy object on the power
cord.
• Otherwise, it may cause a fire or electrical
shock.
When the product is submerged into water,
always contact the service center.
• Otherwise, it may cause a fire or electrical
shock.
Take care so that children may not step on
the outdoor unit.
• Otherwise, children may be seriously injured
due to falling down.
■Operation
Use a vacuum pump or Inert (nitrogen) gas when doing leakage test or air purge.
Do not compress air or Oxygen and Do not use Flammable gases.
Otherwise, it may cause fire or explosion.
• There is the risk of death, injury, fire or explosion.

Installation Manual 5
Safety Precautions
ENGLISH
■Installation
Install the drain hose to ensure that drain
can be securely done.
• Otherwise, it may cause water leakage.
Install the product so that the noise or hot
wind from the outdoor unit may not cause
any damage to the neighbors.
• Otherwise, it may cause dispute with the
neighbors.
Always inspect gas leakage after the
installation and repair of product.
• Otherwise, it may cause the failure of product.
Keep level parallel in installing the product.
• Otherwise, it may cause vibration or water
leakage.
Avoid excessive cooling and perform
ventilation sometimes.
• Otherwise, it may do harm to your health.
Use a soft cloth to clean. Do not use wax,
thinner, or a strong detergent.
• The appearance of the air conditioner may
deteriorate, change color, or develop surface
flaws.
Do not use an appliance for special purposes
such as preserving animals vegetables,
precision machine, or art articles.
• Otherwise, it may damage your properties.
Do not place obstacles around the flow inlet
or outlet.
• Otherwise, it may cause the failure of
appliance or an accident.
■Operation

1. Installation Places
• If an awning is built over the unit to prevent
direct sunlight or rain exposure, make sure
that heat radiation from the condenser is not
restricted.
• Ensure that the spaces indicated by arrows
around front, back and side of the unit.
• Do not place animals and plants in the path of
the warm air.
• Take the air conditioner weight into account
and select a place where noise and vibration
are minimum.
• Select a place so that the warm air and noise
from the air conditioner do not disturb
neighbors.
More than
300mm
Fence or
obstacles
More than 700mm
More than 600mm
More than
More than
300mm
300mm
More than
300mm
Sunroof
Installation of Outdoor Unit
Installation of Outdoor Unit
2. Piping length and the elevation
■Single Operation
If installed tube is shorter than 7.5 m, additional charging is not necessary.
Additional Refrigerant = (A -7.5) x Additional refrigerant (g)
6Air Conditioner
Outdoor unit
Indoor unit
A
B
Outdoor unit
Indoor unit
A
B
Unit : mm
Model Pipe Size mm(inch) Length A(m) Elevation B(m) Additional refrigerant
(g/m)
Gas Liquid Standard Max. Standard Max.
UU36WH/UU37WH
UU42WH/UU43WH
UU48WH/UU49WH
Ø15.88
(5/8)
Ø9.52
(3/8) 575 530 40

Installation of Outdoor Unit
• When installing the branch pipe, direction and angle of installation is not limited.
• Take care so that burrs and foreign material may not enter into the cutting surface when
connecting.
• Connect remaining those by cutting or direct insertion to the diameter of pipe.
■Synchro Operation
Install the branch pipe so that pipe length and difference between high and low will not exceed
below Spec.
[Unit : m]
Branch
L1
H1
A
A
L2
L3
L4
L5
H2
Remote
Controller
Pipe Length & Height
Total(L1+L2+L3+L4+L5)
Main Pipe(L1)
Branch Pipe (L2+L3+L4+L5)
Each
Indoor-Outdoor (H1)
Indoor-Indoor (H2)
(L1+L2),(L1+L3),(L1+L4),(L1+L5)
A
Spec(MAX.)
80
45
40
15
30
1
70
10
Installation Manual 7
ENGLISH
■Refrigerant Additional Charging Method
For additional charging method, see below table.
Indoor Unit Refrigerant Additional charging (g)
Duo
Trio
Quartet
Refrigerant = (L1-b) x B + (L2 + L3) x C
Refrigerant = (L1-b) x B + (L2 + L3 + L4) x C
Refrigerant = (L1-b) x B + (L2 + L3 + L4 + L5) x C
C
(g/m)
Pipe Diameter.
(mm)
Ø 6.35
Ø 9.52
35
40
b
(m)
Model
UU36WH/UU37WH
UU42WH/UU43WH
UU48WH/UU49WH
B
(g/m)
7.5 40
b : Rated performance for refrigerant line length.
C : Additional charging Refrigerant of Branch Liquid Pipe.
B : Additional charging Refrigerant of Main Liquid Pipe.
NOTICE
CAUTION:
• Capacity is based on standard length and maximum allowance length is on the
basis of reliability.
• Improper refrigerant charge may result in abnormal cycle.

** When using synchro operation,
- Do not use wireless remote controller.
- Use only one wired remote controller in the indoor units.
- Use central controller and function controller "PQCSB101S0 &PQCSC101S0" only.
NOTICE
8Air Conditioner
Installation of Outdoor Unit
3. Synchro Combination table
Possible combination of indoor units
Synchro
Duo Trio Quartet
IDU : INDOOR UNIT
ODU : OUTDOOR UNIT
BD : BRANACH
DISTRIBUTOR UNIT
REMO : WIRED REMOTE
CONTROLLER
ODU
BD
IDU IDU
REMO
ODU
BD
IDU IDU IDU
REMO
BD
IDU IDU IDU IDU
ODU
REMO
MODEL Cassette Duct Convertible Cassette Duct Convertible Cassette Duct Convertible
UU36WH/UU37WH
UU42WH/UU43WH
UU48WH/UU49WH
Applied
Accessiries
BDunit PMUB11A PMUB111A PMUB1111A
Simple central
controller** PQCSB101S0
Function
controller** PQCSC101S0
UT18H NP1*2 UB18H NG1*2 UV18H NJ1*2 UT12H NP1*3 - UV12H NJ1*3 - - -
UT21H NN1*2 UB21H NG1*2 UV21H NJ1*2 UT18H NP1*3 UB18H NG1*3 UV18H NJ1*3 UT12H NP1*4 - -
UT24H NN1*2 UB24H NG1*2 UV24H NJ1*2 UT18H NP1*3 UB18H NG1*3 UV18H NJ1*3 UT12H NP1*4 - -

Installation Manual 9
Installation of Outdoor Unit
4. Outdoor Unit PCB Setting Procedure For Simultaneous Operation System
ENGLISH
1. DIP SW2 Setting
Set the DIP SW2 as below Table (Ⓐ)
2. Auto Addressing Method
Addressing work assigns address to each
indoor unit. When firstly installing product or
replacing the indoor unit PCB. Auto
Addressing work should be done for
simultaneous operation.
❈Work procedure
1) Set DIP SW2 correctly.
2) Turn on main power.
3) Press the SW01B for about 3 seconds within
3 minutes After main power on.(Ⓑ)
4) After step 3), the LED01G(red LED) and
LED02G(green LED) rapidly flickers. When
Addressing work is done, green LED is off,
else LED (LED01G) stops flickering and
lights continuously. Address of indoor unit is
indicated on the wired remote control display
window. (CH01, CH02, CH03, CH04)
5) Press button to turn on the indoor.
6) If you fail to perform the Addressing work,
repeat step 2)~5).
DIP SW2 Indoor Unit No.
2(Duo)
1(Single)
: Default
3(Trio)
4(Quartet)
Table DIP SW2 Setting
ON
12345
00000
ON
12345
10000
ON
12345
11000
ON
12345
11100
❈1 means S/W on.
0 means S/W off.
ON
12345
SW01B LED01H
DIP SW2
A
BMAIN PCB
LED01G
LED02G
Night Silent Operation setting
1. Open the side panel of outdoor unit.
2. Set the DIP SW2.
3. Close the side panel.
ON
12345
DIP SW2
1 means S/W on.
0 means S/W off.
✽
ON
12345
00010
DIP SW2

Wiring Connection
Wiring Connection
Electrical Wiring
Outdoor
Indoor
Main
power source Switch box
ELCB
Perform the electrical wiring work according to the electrical wiring connection.
• All wiring must comply with local requirements.
• Select a power source that is capable of
supplying the current required by the air
conditioner.
• Use a recognized ELCB(Electric Leakage
Circuit Breaker) between the power source and
the unit. A disconnection device to adequately
disconnect all supply lines must be fitted.
• Model of circuit breaker recommended by
authorized personnel only
10 Air Conditioner
2(N) 3 1(L)SCN-REMO
CN-REMO
CN-REMO
Terminals on the indoor unit 4
2(N) 3 1(L)S
Terminals on the indoor unit 3
2(N) 3 1(L)S
Terminals on the indoor unit 2
2(N) 3 1(L)M
Terminals on the indoor unit 1
Terminals on the
Outdoor unit
2(N) 3 1(L)
Remote
Controller
CN-REMO
2(N) 3 1(L)
2(N) 3 1(L)
2(N) 3 1(L)
2(N) 3
4
4
4
4
5
5
5
5 1(L)
• When using simultaneous Operation System,
use only one wired remote controller
in the indoor units
Simultaneous
Operation Unit 2,3,4
Main Unit1
POWER INPUT
(380V-415V3N)
LNLN
POWER INPUT
(220V-240V~)
LN
2(N) 3 1(L)
CSTDUCT, CVT
• Connect the wires to the terminals on the control board individually according to the outdoor unit connection.
• Ensure that the color of the wires of outdoor unit and the terminal No. are the same as those of
indoor unit respectively
Connecting Cables between Indoor Unit and Outdoor Unit
Model Phase(Ø) ELCB
UU36/42/48WH 140A
UU37/43/49WH 325A

Wiring Connection
The power cord connected to the outdoor unit should be complied
withIEC 60245 or HD 22.4 S4 (This equipment shall be provided with a
cord set complying with the national regulation.
The connecting cable connected to the outdoor unit should be
complied with IEC 60245 or HD 22.4 S4 (This equipment shall be
provided with a cord set complying with the national regulation.)
If the supply cord is damaged, it must be replaced by a special cord or assembly availible from the manufacturer of its service agent.
NORMAL CROSS-SECTIONAL AREA
CAUTION
20mm
GN/YL
NORMAL
CROSS-SECTIONAL
AREA 0.75mm2
When the connection line between the indoor unit and
outdooor unit is over 40m, connect the telecommunication
line and power line separately.
GN/YL
1 Phase(Ø)
20mm
Model Phase(Ø) Area(mm2)
15
32.5
UU36WH
UU42WH
UU48WH
UU37WH
UU43WH
UU49WH
3 Phase(Ø)
20mm
GN/YL
Precautions when laying power wiring
Use round pressure terminals for connections to the power terminal block.
When none are available, follow the instructions below.
• Do not connect wiring of different thicknesses to the power terminal block. (Slack in the power
wiring may cause abnormal heat.)
• When connecting wiring which is the same thickness, do as shown in the figure below.
WARNING:
Make sure that the screws of the terminal are free from looseness.
Round pressure terminal Power wire
Installation Manual 11
ENGLISH

Wiring Connection
CAUTION:
• The circuit diagram is not subject to change without notice.
• Be sure to connect wires according to the wiring diagram.
• Connect the wires firmly, so that not to be pulled out easily.
• Connect the wires according to color codes by referring the wiring diagram.
* Make sure the rubber bushes are
Properly used in knock-out holes
after connecting main power
Connecting cable terminal
Power cord terminal
Cord clamp
Cord clamp
• Remove the side panel for wiring connection.
• Use the cord clamp to fix the cord.
• Earthing work
- Case 1 :Terminal block of Outdoor Unit have mark.
• Connect the cable of diameter 1.6mm2or more to the earthing terminal provided in
the control box and do earthing.
- Case 2 :Terminal block of Outdoor Unit don't have mark.
• Connect the cable of diameter 1.6mm2or more, to the panel of control box, marked
as and fasten with earth screw.
Connecting the cable to Outdoor Unit
12 Air Conditioner
CAUTION:
• The Power cord connected to the unit should be selected according to the following
specifications.

Connecting Pipes
Connecting Pipes
Preparation of Piping
Main cause of gas leakage is defect in flaring
work. Carry out correct flaring work in the
following procedure.
Cut the pipes and the cable.
• Use the accessory piping kit or the pipes
purchased locally.
• Measure the distance between the indoor
and the outdoor unit.
• Cut the pipes a little longer than measured
distance.
•
Cut the cable 1.5m longer than the pipe
length.
Burrs removal
• Completely remove all burrs from the cut
cross section of pipe/tube.
•
Put the end of the copper tube/pipe to
downward direction as you remove burrs in
order to avoid to let burrs drop in the tubing.
Putting nut on
• Remove flare nuts attached to indoor and
outdoor units, than put them on pipe/tube
having completed burr removal.
(Not possible to put them on after flaring work)
Flaring work
• Carry out flaring work using dedicated
flaring tool for R-410A as shown below.
Firmly hold copper tube in a bar(or die) as
indicated dimension in the table above.
Check
• Compare the flared work with figure below.
• If flare is noted to be defective, cut off the
flared section and do flaring work again.
Outside diameter "A"
mm inch mm
Ø6.35 1/4 1.1~1.3
Ø9.52 3/8 1.5~1.7
Ø12.7 1/2 1.6~1.8
Ø15.88 5/8 1.6~1.8
Installation Manual 13
ENGLISH
Copper
tube
90 Slanted Uneven Rough
Pipe
Reamer
Point down
Flare nut
Copper tube
Bar
Copper pipe
Clamp handle Red arrow mark
Cone
Yoke
Handle
Bar
"A"
Inclined
Inside is shining without scratches
Smooth all round
Even length
all round
Surface
damaged Cracked Uneven thickness
= Improper flaring =

• Align the center of the piping and sufficiently
tighten the flare nut by hand.
• Finally, tighten the flare nut with torque wrench
until the wrench clicks.
- When tightening the flare nut with torque
wrench, ensure the direction for tightening
follows the arrow on the wrench.
❈When tighten the pipe, hold the haxagonal
body.
mm inch kgf.m
Ø6.35 1/4 1.8~2.5
Ø9.52 3/8 3.4~4.2
Ø12.7 1/2 5.5~6.6
Ø15.88 5/8 6.3~8.2
Outside diameter Torque
Continuous
Torque
wrench
Connecting Pipes
Connecting the pipes to the Outdoor unit
14 Air Conditioner
• For the units with capacity more than 10kW, the
installation piping is connectable in four
directions.(refer to figure 1)
Forward Sideways
Backward
Downward
<Figure 1>

Connecting Pipes
• When connecting in a downward direction, knock
out the knock-out hole of the base pan.
(refer to figure 2)
Preventing foreign objects from entering
(Figure3)
• Plug the pipe through-holes with putty or
insulation material(procured locally)to stop up all
gaps,as shown in the figure 3.
Knock-out Base pan
Gas side piping
Liquid side piping
Drain hose
Connecting wire
Connection pipe
<Figure 3>
Putty or insulating material
(produced locally)
<Figure 2>
Installation Manual 15
ENGLISH
CAUTION:
Insects or small animals entering the
outdoor unit may cause a short circuit
in the electrical box.

Connecting Pipes
Forming the piping
• Trap is required to prevent water from entering
into electrical parts.
Taping
Drain hose
Pipings
Connecting
cable
Power supply
cord
PlasticPlastic
bandband
Plastic
band
Seal a smallSeal a small
opening aroundopening around
the pipings withthe pipings with
gum type sealer.gum type sealer.
Seal a small
opening around
the pipings with
gum type sealant.
Trap
Seal a small opening
around the pipings
with gum type sealer.
Form the piping by wrapping the
connecting portion of the indoor
unit with insulation material and
secure it with two kinds of vinyl
tape.
• If you want to connect an additional drain
hose, the end of the drain outlet should be
routed above the ground. Secure the drain
hose appropriately.
In cases where the outdoor unit is
installed below the indoor unit
perform the following.
1. Tape the piping, drain hose and connecting
cable from down to up.
2. Secure the tapped piping along the
exterior wall using saddle or equivalent.
In cases where the outdoor unit is
installed above the indoor unit
perform the following.
1. Tape the piping and connecting cable from
down to up.
2. Secure the taped piping along the exterior
wall. Form a trap to prevent water entering
the room.
3. Fix the piping onto the wall by saddle or
equivalent.
Trap
Plastic
band
Seal a small
opening around
the pipings with
gum type sealer.
TrapTrapTrap
Seal a small openingSeal a small opening
around the pipingsaround the pipings
with gum type sealer.with gum type sealer.
Seal a small opening
around the pipings
with gum type sealant.
16 Air Conditioner

Leakage test and Evacuation
Leakage test and Evacuation
Air and moisture remaining in the refrigerant system have undesirable effects as indicated below.
1. Pressure in the system rises.
2. Operating current rises.
3. Cooling(or heating) efficiency drops.
4. Moisture in the refrigerant circuit may freeze and block capillary tubing.
5. Water may lead to corrosion of parts in the refrigeration system.
Therefore, the indoor/outdoor unit and connecting tube must be checked for leak tight, and
vacuumed to remove incondensible gas and moisture in the system.
• Check that each tube(both liquid and gas side tubes) between the indoor and outdoor units have been
properly connected and all wiring for the test run has been completed. Remove the service valve caps
from both the gas and the liquid side on the outdoor unit. Check that both the liquid and the gas side
service valves on the outdoor unit are kept closed at this stage.
• Connect the manifold valve(with pressure gauges)
and dry nitrogen gas cylinder to this service port
with charge hoses.
CAUTION: Be sure to use a
manifold valve for leakage test.
If it is not available, use a stop valve for
this purpose. The "Hi" knob of the
manifold valve must always be kept
close.
• Pressurize the system to no more than 3.0
Mpa with dry nitrogen gas and close the
cylinder valve when the gauge reading
reached 3.0 MPa Next, test for leaks with
liquid soap.
CAUTION: To avoid nitrogen
entering the refrigerant system in a
liquid state, the top of the cylinder must be
higher than its bottom when you
pressurize the system. Usually, the cylinder
is used in a vertical standing position.
1. Do a leakage test of all joints of the
tubing(both Indoor unit and outdoor unit) and
both gas and liquid side service valves.
Bubbles indicate a leak. Be sure to wipe off
the soap with a clean cloth.
2. After the system is found to be free of leaks,
relieve the nitrogen pressure by loosening
the charge hose connector at the nitrogen
cylinder. When the system pressure is
reduced to normal, disconnect the hose from
the cylinder.
Preparation
Leakage test
Charge hose
Indoor unit
Outdoor unit
Manifold valve
Lo Hi
Pressure
gauge
Nitrogen gas
cylinder(in vertical
standing position)
Installation Manual 17
ENGLISH

Leakage test and Evacuation
1. Connect the charge hose end described in the
preceding steps to the vacuum pump to evacuate
the tubing and indoor unit.
Confirm the "Lo and Hi" knob of the manifold valve
is open. Then, run the vacuum pump.
The operation time for evacuation varies with
tubing length and capacity of the pump. The
following table shows the time required for
evacuation.
2. When the desired vacuum is reached, close the "Lo
and Hi" knob of the manifold valve and stop the
vacuum pump.
Finishing the job
1. With a service valve wrench, turn the valve stem of
liquid side valve counter-clockwise to fully open the
valve.
2. Turn the valve stem of gas side valve counter-
clockwise to fully open the valve.
3. Loosen the charge hose connected to the gas side
service port slightly to release the pressure, then
remove the hose.
4. Replace the flare nut and its bonnet on the gas
side service port and fasten the flare nut securely
with an adjustable wrench. This process is very
important to prevent leakage from the system.
5. Replace the valve caps at both gas and liquid side
service valves and fasten them tight.
This completes air purging with a vacuum pump.
The air conditioner is now ready to test run.
Indoor unit
Outdoor unit
Lo Hi
Manifold valve
Vacuum pump
Open Open
Pressure
gauge
Evacuation
Required time for evacuation when 30 gal/h
vacuum pump is used
30 min. or more 60 min. or more
0.07 kPa or less
If tubing length is less
than 10 m(33 ft)
If tubing length is longer
than 10 m(33 ft)
18 Air Conditioner

Test running
1. PRECAUTIONS IN TEST RUNNING
• The initial power supply must provide at least 90% of the rated voltage.
Otherwise, the air conditioner should not be operated.
CAUTION ①For test run, carry out the cooling operation firstly even during
heating season. If heating operation is carried out firstly, it leads to
the trouble of compressor. Then attention must be paid.
② Carry out the test run more than 5 minutes without fail.
(Test run will be cancelled 18 minutes later automatically)
• The test run is started by pressing the room temperature checking button and down timer
button for 3 seconds at the same time.
• To cancel the test run, press any button.
CHECK THE FOLLOWING ITEMS WHEN INSTALLATION IS COMPLETE
• After completing work, be sure to measure and record trial run properties, and store measured
data, etc.
• Measuring items are room temperature, outside temperature, suction temperature, blow out
temperature, wind velocity, wind volume, voltage, current, presence of abnormal vibration and
noise, operating pressure, piping temperature, compressive pressure.
• As to the structure and appearance, check following items.
2. Connection of power supply
1. Connect the power supply cord to the independent power supply.
• Circuit breaker is required.
2. Operate the unit for fifteen minutes or more.
3. Evaluation of the performance
1. Measure the temperature of the
intake and discharge air.
2. Ensure the difference between the
intake temperature and the discharge
one is more than 8°C (Cooling) or
reversely (Heating).
□Is the circulation of air adequate?
□Is the draining smooth?
□Is the heat insulation complete
(refrigerant and drain piping)?
□Is there any leakage of refrigerant?
□Is the remote controller switch operated?
□Is there any faulty wiring?
□Are not terminal screws loosened?
M4......118N.cm{12kgf.cm} M5......196N.cm{20kgf.cm}
M6......245N.cm{25kgf.cm} M8......588N.cm{60kgf.cm}
Test running
Thermometer
Installation Manual 19
ENGLISH

20 Air Conditioner
Test running
CAUTION: After the confirmation of the above conditions, prepare the wiring
as follows:
1) Never fail to have an individual power specialized for the air conditioner.
As for the method of wiring, be guided by the circuit diagram pasted on
the inside of control box cover.
2) Provide a circuit breaker switch between power source and the unit.
3) The screw which fasten the wiring in the casing of electrical fittings are
liable to come loose from vibrations to which the unit is subjected
during the course of transportation. Check them and make sure that
they are all tightly fastened. (If they are loose, it could give rise to burn-
out of the wires.)
4) Specification of power source
5) Confirm that electrical capacity is sufficient.
6) Be sure that the starting voltage is maintained at more than 90 percent
of the rated voltage marked on the name plate.
7) Confirm that the cable thickness is as specified in the power sources
specification.
(Particularly note the relation between cable length and thickness.)
8) Never fail to equip a leakage breaker where it is wet or moist.
9) The following troubles would be caused by voltage drop-down.
• Vibration of a magnetic switch, damage on the contact point there of fuse
breaking, disturbance to the normal function of a overload protection device.
• Proper starting power is not given to the compressor.
10) Use only 1 remote-controller contained in indoor unit, when using
simultaneous operation system as shown below.
After setting the ESP value in the Ceiling Concealed Duct Type Indoor
Unit, the main power turns off and then remove the remote controller.
HAND OVER
Teach the customer the operation and maintenance procedures, using the operation manual
(air filter cleaning, temperature control, etc.).