Comfort Star CASSETTE User manual

CASSETTE
Installation Operation
Manual
eAir LLC
12201 N.W. 107 Avenue, Medley, FL 33178
www.comfortstarusa.com

Thank you for choosing our company products!
Air conditioning facilities are valuable products. In order to protect
your legitimate rights and interests, please make sure that the
installations are done by professional technicians. This manual is a
general-purpose version for the conditioning systems manufactured
by our CO., the one that you have chosen might be a little different in
appearance from the ones described in the manual . But these differences
will not have any impacts upon your operation and use of the system.
Please read the manual carefully before you operate the system and
check to see if the model is identical to the one you have purchased, keep
the manual properly in case you might refer to it in the future.
CONTENTS PAGE
NOTICES TO USERS
PARTS NAME AND FUNCTION
INTRODUCTION OF CONTROLLERS
INSTALLATION OF THE UNIT
TEST OPERATION
MAINTENANCE AND UPKEEP
TROUBLESHOOTING
ELECTRIC WIRING
1
4
6
9
17
1 9
22
25

1.1 Safety Notices
＂Important Safety Information＂ affords very important points about how to
operate the unit safely.To prevent injury to the user or other people and property
damage, the following instructions must be followed. Incorrect operation due to
ignoring of instructions may cause harm or damage.
The safety precautions listed here are divided into two categories. In either
case, important safety information is listed which must be read carefully.
1. Never install the unit by yourself and call the professionals from distributor
or maintenance center for installation, or it may lead to accidents and affect
the performance of usage .
2. Never dismantle the units without the guidance of the professionals, or it may
cause danger .
3. Do not place insecticides or paints and other flammable sprays near the unit
or spray them directly at the unit. It might cause fire hazards.
4. Do not install the main power supply switch at the places where the children
might touch it to avoid of accidents .
5. Do not spray water or other liquid to the air conditioner, or else it may cause
electric shock.
6. Do not touch the unit with wet hands, otherwise it might cause electric shocks .
7. Disconnect the power during lighting storm day, otherwise it might cause
NOTICES TO USERS
1
WARNING
Failure to observe a warning may result in serious injury, grave
accidents even death.
CAUTION
Failure to observe a caution may lead to injury or damage to the
equipment.
Please read the mark of the unit carefully .If you detect any abnormality, such
as abnormal noise, smell, fog, temperature rise, creepage, fire and so on;
Please turn off the power supply immediately and call your dealer or local
service center for instructions. Do not repair the unit by yourself. If necessary,
call the local fire department or Emergency department for help.
WARNING
!!
!!
!!

Lightning shocks or damage the unit .
8. If the unit will be idle for a long time, disconnect the power to avoid of accidents .
9. The unit shall be equipped with special power supply switch and power line
to avoid of sharing the same power line with other devices. Besides, it adopts
the stated- cross-section wire to supple the power, matching with the
corresponding breaker(with creepage protect function) .
10. The unit is connected with the stated-cross-section earth wire, which is
grounded safely and is not allowed to be connected with the gas pipe, water
pipe, lightning conductor or the telephone earth wire in order to avoid of
electric shocks.
11. Never stop the operation of the unit by pulling out the power supply line in
order to avoid of electric shocks or fire hazards .
1. Do not put your hands or sticks into the air vents . As the fan running with high
speed will hurt you.
2. Keep the electric control system from damp to avoid of circuit-short or damage
of unit .
3. After cleaning the filter screen, install the air filter screen quickly .It is not
allowed to operate the unit without the air filter screen which may get the poor
performances.
4. When there are old men, children and patient in the room, please adjust the
room temperature properly.
5. If the unit is interrupted by the lightning or other electromagnetic radiation, cut
off the power, restart the unit after eliminating that factors.
6. Do not clog the air inlet and outlet of the unit.
7. Never use the fuse with incorrect capacity or iron or copper wires for fuse .
8. Keep the unit off the places where might happen fire hazards .Pull out the
power plug immediately and put down the fire with fire extinguisher result from
circuit-short.
9. Cut off the power supply before servicing.
10.Do not touch the pipe on the exhaust side, because the temperature may be
above than 100℃, so it may result in scald.
11. Do not touch the fin and sharp edge which will hurt you.
12. Do not move the unit randomly without professional guidance, otherwise it may
cause the damage of the unit .
2
CAUTION
!!

1.2 Use notices
3
13.Do not touch the rotary air vents with your hands or other objects to avoid of
accidents or damage.
14. It is forbidden placing goods above the machine set, so as not to result in the
danger of the fall off when they are running.
1. The unit must be installed in outdoor field where there is sunlitproof and
rainproof establishments , or else our company is not responsible for the
problems caused because of wrong installation.
2. All the operation parameters of the unit set , the set values of the protective
device have been set before the delivery , the consumers are not allowed to
change the set values at random , and also are not allowed to make the line of
the protective devices of the machine set , short-circuit or the unit may be
damaged as result of improper protection.
3. When the unit is running, the unprofessional personnel do not touch any
electrical element and buttons, or it will result in serious accident.
4. If the unit goes wrong , don't repair it by yourself , please consult the service
center of the company ( the consultation telephone number can refer to the
back over ). If the machine set is repaired by unprofessional personnel , it may
result in the machine breakdown or the casualty of personnel.
5. During cleaning the unit, never clean the operational panel with benzene,
diluent agent , or chemical cloth and so on , or it will result into fade or the fault
function of the buttons ; It is not allowed to directly sprinkle the unit with
water or cleaning agent, when it is necessary, please clean them with a cloth
that is stained with water or neutral cleaning agent.
6. In order to prolong the service time of the air- condition, please do not start the
compressor frequently. (It should not be more than five times in an hour).
7. The refrigerant used in the machine set is noncombustible and innoxious , as
for the specific gravity of which is greater than air , so when it leaks, it will
diffuse on the ground. As a consequence, if the unit is installed in a room, it
must make sure that the ventilation condition is good , or it way result in serious
asphyxia when the refrigerant leaks.
8. If the refrigerant leaks, stop the unit as soon as possible, and get in touch with
the maintenance and repairmen in time, the flame on the field is forbidden,
because if the refrigerant contacts with the flame, it will decompose into
harmful gas
9. Please service the machine set termly according to the requirements of the
specification , in order to make sure that the operation condition of the machine
set is good.

B
A
PARTS NAME AND FUNCTION
■ Indoor unit
■ Outdoor unit ( A. Air outlet B. Air inlet )
NOTE: The drawings above only can be taken as illumination.
4
A
B
A
Drainage devices (built in type)
Wa ter discharge d an d re move d from
indoor during the refrigeration operation.
Return air grillages
Air supply inlet
Air filter (it is located in the return
air grillages)
Refrigeration agent pipe
Connect the ground
conductor
Ground conductor
Drainage pipe
Wind guide bar ( it is
located in the air supply
inlet)
Short pipe air supply outlet
1. Only to use pecial required occasions
2. Only to connect short pipe on one side
in s
BB
A

■ The indicator light board of the indoor unit
5
Receiving window of the
remote control signal
Running indicator light
Defrosting-Preheating
indicator light
Emergency key
When the remo te contr oller
is out of order, you can press
down this key to carry out the
emergency operation.
When the unit breaks
down, the protection
light will be on.
Timer indicator light
RUN DEFROST TIMER PROTECTION
EMERGENCY
lamp LED Display Panel
Running indicator light
Defrost
Preheating light
Emergency key
Digital display
Timer setting indicator
Receiving window of
remote control signal
Run Defrost Timer Warning
When unit failure,
protection light flashes
Digital display panellamp
When equipped with lamp panel, please
toggle the fourth point of dialing switches SW1 to DP in the
electronic controller of indoor unit, as shown in the right figure:
Digital display
CAUTION
!!

INTRODUCTION OF CONTROLLERS
The model of the following remote controller is Lingtong common
remote controller.
TURBO key, LAMP key, AIR FLOW key and CLEAN key is applicable for
special latest developed new models instead of normal ones.
2.2 Introduction of Functional Key
■ ON/OFF key: Press the key and the remote control will switch circularly in the
order : ON→OFF→ON.
When it is powered on at first from off state to on state, the default setting of
work condition is ( The set temperature is 25℃ and the mode , wind speed,
swing and air door are all automatic and there is no LAMP, no TURBO, no
CLEAN, no SLEEP, no TIMER and no HOLD function ). When it is not
powered on firstly from OFF state, the work condition is as the same as the
state before stopping. It will cancel LAMP, CLEAN, SLEEP, TURBO and TIME
mode.
■ MODE key: Press the key to switch modes in the order :
AUTO→COOL→DRY→HEAT→FAN→AUTO
■ ▼ key: In DRY mode or AUTO mode, pressing ▼ key cannot change the
temperature. In other mode, press the key once and the temperature will
decrease 1℃ in the order : 32℃ →31℃ → …→17℃→16℃ .
■ ▼key:In DRY mode and AUTO mode, pressing ▼ key cannot change the
temperature. In other mode, press the key once and the temperature will
increase 1℃ in the order: 16℃ →17℃→ … →31℃→32℃ .
2.1 Instruction for Remote controller
6
FFFF
CC
ON
OFF
COOL
DRY
HEAT
FAN
MODE
ON/ OFF
AUTO
FAN SPEED
TIMER
SWI NG
HOLD SLE EP
LAMP CLEA N
TEMP
AIR FL OW
TURBO
MODE key
It is used for selecting different modes,
such as automatic, cooling,
dehumidifying, heating and ventilating.
ON/OFF key
It is used for starting or stopping AC.
FAN SPEED key
It is used for selecting wind speeds (
natural wind, high wind, middle wind
and low wind)
TIMER key
It is used for setting timing ON/OFF
and regards hour as its union.
TURBO key
T h e key d o e s n’t i n d i c a t e wind
speed a nd sett i n g slee p mode or
changing modes will cancel TURBO
operation.
Set TEMP key
Press▼▲ will decrease or increase
the set temperature and the rang is :
16℃~32℃
SWING key
It is used for selecting swing and
stopping switching circularly.
AIR FLOW key It is used for selecting
swing , stable wind, natural wind and
circulating wind.
SLEEP key
It is used for selecting sleep mode
and canceling sleep mode.
HOLD key
It is used for selecting hold mode and
canceling hold mode.
CLEAN key
It is used for selecting purification or
canceling purification.
LAMP key: It is used for selecting
lamp being on or being off.
LAMP
TURBO
CLEAN
HOLD
SLEEP

■ FAN SPEED key: The default wind speed is in the automatic wind mode when
starting firstly. The remote control won’t react by pressing the key because
the wind speed can’t be adjusted and in low speed in dehumidifying mode. In
other mode, press the key to switch modes in the order : automatic wind→ high
speed →middle speed→ low speed →automatic wind.
■ SWING key : In dehumidifying mode, the swing mode is in the stable wind
mode without change. In other mode, press the key to switch modes in the
order: swing →stable wind→natural wind →swing.
■ AIR FLOW key : The default air flow is in the swing mode when starting firstly
and press the key to switch modes in the order: SWING →STOP →SWING.
■ TIMER key : The default mode is in no timing state, press the key to set timing
time . The switch order is: 1H→2H→…→24H→cancel→1H…. Press the key
to set timing starting in the OFF state and set timing stopping in the ON state.
After setting timing function, the time keeps decreasing per hour until the
time decreasing to the timing on or timing off and the timing display will be
cancelled at the same time . Pressing MODE key can’t cancel timing in
timing mode which will set out timing time by pressing other key.
■ HOLD key: The default state is in no HOLD key state, press the key to select
modes in order: HOLD key →cancel HOLD key→ HOLD key ; In HOLD key
mode, all keys except HOLD key of the remote control can’t work .
( NOTE: In HOLD key mode, the remote and operation panel of the unit both
will be locked automatically by pressing the key and press the key again , they
will be unlocked. As for the split unit , it only hold the control other than
EMERGENCY key and the panel will make a reaction.)
■ SLEEP key : Press the key to switch modes in the order: SLEEP→ cancel
SLEEP→ SLEEP. The sleeping function won’t be cancelled for changing
modes. Press the key to set sleep mode and the wind speed will automatically
be switched to low speed and it can adjust the wind speed by pressing the
FAN SPEED key (except dehumidifying mode).
■ TURBO key: The default state for the control is no turbo and the key don’t
work in the AUTOMATIC mode, DRY mode and FAN mode ( It will not display
any contents and not send out any codes). The control, however, will switch
between on and off by pressing the key in other mode. The wind speed isn’t
indicated in turbo mode and it will be cancelled for changing modes and
setting sleep mode.
■ LAMP key : The default state is in no LAMP key state, press the key to select
modes in order : LAMP key →cancel LAMP key→ LAMP key; In LAMP key
mode, pressing MODE key can’t cancel the show of LAMP key.
■ CLEAN key : The default state is in no purification state, press the key to select
modes in order : CLEAN →cancel CLEAN→ CLEAN; In CLEAN mode,
pressing CLEAN key can’t cancel CLEAN function. Press the key when
the remote control is closed, the control will switch modes in the order :
CLEAN →cancel CLEAN→ CLEAN; When you stop the unit and turn on the
purification switch, except the wind, the stable swing and air door swing speed
aren’t adjusted.
7

2.3 Notices for operating the remote control
① Don’t place the control near high heat source such as Electric blanket, warm
furnace and so on.
② Don’t expose the control in sun.
③ Take care for it and prevent it from damage for falling down.
④ Don’t place any rolling obstacle between the signal acceptor of AC and the
control, otherwise it may affect sending or incepting signals.
⑤ Don’t spray water or other liquid on the control.
⑥ Don’t place any clog on the control.
NOTE: When the remote control is out of work, please replace the battery and
operated it once ; If the failure hasn’t be cancelled, please take urgent operation
methods to restart the AC.
2.4 Replace batteries of the remote control
If the following condition appears, which mean that the batteries have been
used up, please take out of the old batteries and change for new ones.
① After sending the signal, the air conditioner can not send receiving sound.
② The display screen is not clear
The operating steps are as follows:
■ Remove the back cover, take out of
the old batteries.
■ Replace batteries, please notice the
poles “+” and “-” on the batteries.
■ Close the back cover and set the current
time.
■ Make sure whether it indicates a.m. 0:00
or not.
Pay attenti on to poles of “+”and “-”
1. New and old batteries can not be used together.
2. If the remote controller will not be idle for long time, please take out of the
batteries.
3. The service life of the dry batteries, accorded with the requirements of the
standard of JIS or IEC, is 6 to 12 months under common condition ;
Overrunning the service time or using dry batteries , which are not accorded
with the above mentioned specifications, the liquid seeping phenomenon may
be occur on the battery and the remote control won’t work.
4. There is “Advised Service Time” marked on the battery, the practical service
time may be shorter than the advised one.
8
NOTE
!!

INSTALLATION OF THE UNIT
When the temperature of the ceiling inside is higher than 30℃, and RH is
higher than 80%, More than 10mm heat insulation materials,such as fiber
glass cotton or froth polyethylene should be slicked on the casing of the unit.
(if the thickness of the heat insulation materials is more than 10mm, the extra part
should be folded up and placed in the opening of the ceiling).
■ The indoor unit can be installed on the ceiling with the height of 2.5~2.5mm.
■ When installing the indoor unit, the lifting screw rod will be used and make sure
installation foundation is firm enough to support the unit, otherwise,please
take some measurings to reinforce it prior to installation. The hole pitch
has been marked on in the installation paper matrix, please refer to those
specification and find out the places where the reinforcing measures should be
taken.
■ Make sure there is no obstacles in the place where is 1meter away from
the air outlet.
4.1.2 Installation procedures for indoor units
■ The position relationship between the opening in the ceiling, the unit and the lifting screw
Installation space unit: mm
H
The distance between
the equipments and
the ground is more than 2500
More than1000
Air outlet Air inlet Air outlet
More
than1500
More than1500 More than
1500
More than1500
Model(kBtu/h) Dimensions(H)
For 18,24 series 230
For 36,48,60 series 285
4.1 Install Indoor unit
4.1.1 Installation place
Installation dimension unit: mm
More than 20
(150)
The base of
the hanger
A direction
Ceiling
B(the openi ng in the ceiling)
A(the decor ation panel)
Refrigera nt agent
D(the dista nce b etween th e
lifting scr ew)
C(the indoo r units)
E(the dista nce between the lifting
screw machi ne)
A(the decor ation panel)
B(the openi ng in the ceiling)
C(the indoo r units)
The lifting s crew(x4)
9

unit: mm
Model(kBtu/h)
Dimensions(H)
A B C D E
950 890* 840 680 780
NOTE：
① The dimensions of the opening of the ceiling marked by the star symbol
can surpass 910mm, but the overlap sections of the ceiling and the decoration
panel should be more than 20 mm.
② As for existing ceiling, a proper opening for installation should be dig
a. On the installation paper-matrix, you can get the detailed information about
the dimensions of the opening of the ceiling.
b. Before installation, please finish the installation of all ducts ( refrigerant duct,
drainage duct)and the connection of the all power lines(the power lines of the
outdoor unit), once the installation has finished, the ducts and the power lines
can be connected with the indoor units immediately.
c. The opening in the ceiling can reinforce the ceiling and prevent the ceiling from
vibrating.
■ The installation of the lifting screw(using the W3/8 M10 bolt)
① In order to support the unit, the ground anchor bolts are needed for existing
ceiling and as for new built house and ceiling, however,buried anchor bolts
or other parts(supplied in the field site).
② And then adjust the distance between anchor bolts and the ceiling.
unit: mm
The installation example
Roof
Anchor bolt
The long nut or
screw scribea
The lifting screw
Ceiling
50～100
4.1.3 Installation for indoor units
NOTE: all the parts above mentioned will be
supplied at the installation site
■ When there is no installation position
in the ceiling board
① Attach the base of the hanger on the
lifting screw, the nuts and washers are
used in two ends of hanger base to
firmly fix the base.Besides,the washer
positioning board is used to prevent
the washer from falling off.
② As for the dimensions of the opening
of the ceiling, please refer to the
installation paper-matrix or consult the constructor or the carpenter.
The installation paper-matrix is fixed on the unit with three screws and on
the paper-matrix, the central position of the opening in the ceiling has been
marked out . The corner of the water drainage groovy at the water outlet of the
duct is also fixed by screws.
10
For 18,24,36,48,60 series

③ Adjust the unit to the correct installation position.
④ Check whether the unit is in the horizontal level.
Because the indoor unit has inside water drainage switch and float switch.
Check the four corners of the units separately to make sure that the four corners
are in the horizontal level by using the level gauge or the polythene duct filled with
water (if the unit inclines to the reverse direction to the flow of condensation water,
it may lead to the float switch out of work and result in water dropping).
⑤ Remove the washer positioning board and fasten the nut .
⑥ Remove the installation paper-matrix.
■ When there is installation position in the ceiling board
① Temporary installation ofthe indoor unit
Attach the base of the hanger on the lifting screw, the nuts and washers are
used in two ends of hanger base to firmly fix the base. Besides,the washer
positioning board is used to prevent the washer from falling off.
② Adjust the position and the height of the unit
③ Carry on the operation procedure of ④ and ⑤ steps above;
[Firmly fix the base of the hanger]
Nut (it is supplied at site)
Washer (accessories)
The base of the hanger
Screw up (Double nut preload)
The washer positioning board (accessories)
Insert
[Firmly fix the washers]
Polyethylene duct
Level gauge
[Fix and install the papier-mache]
The center of the
ceiling opening
The bolt s o n o ne a ngle o f t h e e x port of the d uct
are fixed at the angl e par t of the dra inag e chann el
Install the paper-matrix
Screw (accessories)
4.1.4 Install the panel
■ Take down the return air grill from decoration panel:
① Press the button of the return air grill,
and then lift one end of the button (Refer to
the left figure)
Button
● Never keep the panel facing the ground nor again the wall or on protuberant
objects.
● Never crash or strike the swing plate in case of breakdown.
11
CAUTION
!!

② Draw the grill up to an angle of about 45°, and
remove it ( Refer to the right figure)
■ Remove the seal cover at the four corners
(Draw the seal cover out , Refer to the right figure)
■ Install the panel
① Align the swing motor on the panel to the tubing joints of the body properly.
( Refer to the following figure)
② Hang the draw hooks opposite to swing motor of the decoration panel on the
hooks of the indoor unit. (Refer to the following figure)
③⑥ Then hang the other two panel hooks onto corresponding hangers of the body.
( Refer to the following figure)
④ Screw the four hexagonal screws under the draw hook into approximately 5mm.
(the panel will raise along with it)
⑤ Screw up the screws so that the thickness of the air-proof materials between
the panel and the indoor unit reduces to 5 ~ 8mm.
Do not coil the wiring of the swing motor into the seal sponge.
The decoration
panel
Indoor units
The ceiling
materials
Air vent
Packing material
5 millimeters
to 8 millimeters
②
③
④
①
②
The swing baffle
electrical motor
Draw hook Draw hook
Th e po sitio n
of n os epiec e
12
CAUTION
!!

When indoor unit is located in
the horizontal position but the
drain water can not be drained
out, please adjust the height
of the indoor unit through the
angle hole on the decoration panel.
If the screwing is too loose,it
will cause following faults.
Therefore, screw up the screw
again to the stated requirement.
After finishing twisting the screw,
if there is still slit between the ceiling
and the decoration panel, please
readjust the height of indoor unit.
The water drop condenses,
The water drop falls
Air leaks
Air leakage
in the ceiling
Contamination No slit
■ Lifting height of the indoor unit
Please adjust the lifting height of the indoor
unit as the right figure:
① If there is slit between indoor unit and panel,
it will be harmful as the following:
a. Condensation will be generated outside
(ceiling inside) and inside the product
because of the air in the ceiling or the gas
leakage from the ceiling.
b. The horizontal leaf blade will condensate, the
water will splash and condensation will be
generated in the machine because of air current
blowing out disorderly.
② The circuitry of the decoration panel(please
see the right figure)
a. The connector of the wire of the swing electrical
motor should be properly attached (located on
decoration panel)
b. If unconnected, then the swing plate will not act
c. Insure that the wire of the swing electrical motor
is not trapped between indoor unit and the
decoration panel.
10～13
Indoor
Panel
Indoor
Panel
The air guide
clearance
Cool air leak
⑥
The schematic diagram of the circuit
(Different from real condition)
Indoor
unit
Panel
4.1.5 Install return air grill and close cover
■ Install the return air grill
Following the opposite installing steps with " 4.1.4 Install the panel”to carry
on the installment. Rotating the return air grill, it may be installed in 4directions.
If needing to adjust the installment direction of the return air grill, or users put
forward new requirement, installment direction can be changed.
13

Do not coil the wiring of the swing motor into the return air grill when
installing.
■ Fix the close cover on the panel (refer to the following figure)
Insert the four pins on the
close cover into the corresponding
hole on the decoration panel
before installation .
■ Put the return air grill on the panel and then connect the swing motor on
panel and lead connectors of control box to the corresponding joints of
the main body;
■ Install return air grill according to the opposite steps for removing the grill.
■ Reinstall the installation cover plate
■ Fix the rope of the installation cover plate with screws on the bolts of the
installation cover plate (please refer to the lower right figure)
■ Push gently the installation cover plate into the panel.
No split
① Fistly, loose the
top nut
② Adjust the
lower bolt
Slide t h e f o u r
slide f a s t e n s
into the
c o r r e s p o n d i n g
grooves during
installing t h e
cover
Install Self-
tapping screw
of the cover
plate rope
4.2 Install Outdoor unit
4.2.1 Installation precaution
■ It is advisable to transfer the parts of the unit with complete packing to the
installation field site.
■ Pay attention to the lifting of the unit , for its center of gravity not at the
central position.
■ Keep the outdoor unit not incline too much,the angle not more than 45°
during transportation(it is not allowed to store the unit in level in the storehouse )
14
CAUTION
!!

■ Use Drain hose ① and Clip ② (Attachment).
Insert the drain hose into the drain faucet to the white adhesive tape and then
screw down the clip so that the distance between the bolt head and hose is less
than 4 mm.
■ In case of water leakage for dewing ,please take some heat-insulated
measures for the indoor drain hose and the drain faucet.
1-1.5m
The droop is more than 1/100
15
● Drain pipe in the room;
■ Notes of the drain lifting duct
1. The installation height of the drain lifting duct is less than 550mm;
2. Keep the lifting duct with the unit in vertical and the distance less than 300 mm.
.
Clip②
Adhesive tape
(White color)
Drain pipe ①
Large-size sealing gasket ⑩
(Attachment)
Clip②
(Attachment)
Less than
4 mm
Less than 300mm 1-1.5m
Less than 550mm
Less than 750mm
200mm
Roof
The basis of the suspender
The drainage
hose①
(Attachment)
Drain lifting duct
Clip ② (Attachment)
● Drain faucet
Carry on heat insulation operation for the clip
and drain pipe with Large-size sealing
gasket ⑩
● In case of water leakage, please don't drag the drain pipe violently;
● Please install the drainpipes according to the following steps if several
drain pipes are converged in one drain pipe.
More than 100mm
T-connector join drain
pipe
CAUTION
!!

● Step one Choose the proper join drain pipe according to the running
capacity of the unit.
● Step two After the installation of the drain duct, inject 2000ml water into the
air vent or the service port, and then check whether the drainage is free ;
● Step three After the installation of the circuit , check the drainage condition
during cooling operation, as for the details, please refer to "TEST OPERATION".
.
16
Water injection sketch figure
Service hole
Drain pipe
Service discharge port with rubber
plug(drain out the water in drain
pan )
More than
100 mm
(Pour water through the air vent)
Plastic sprinkling pot(the length of
the duct is about 100 mm)
Inject water through
the service hole
Maintenance cover

TEST OPERATION
5.1 Please confirm the following points before the test
operation:
●The indoor unit and outdoor unit are installed properly.
●Tubing and wiring are correctly completed.
●There is no leakage in refrigerant pipe system .
●The drainage is unimpeded.
●The heating insulation works well.
●The ground wiring is connected correctly.
●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 compressor can not run unless the power wires are
connected well.
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A
Be sure to remove the four wind wheel absorber blocks (A) and the fixing
tape before test running!
CAUTION
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CAUTION
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5.2 Test operation
■ Switch on the main power supply of this unit.
■ Press the emergence operation switch(cooling or heating ) to start up the air
conditioner, and the operation indication light flashes. Check whether the
unit is running well and if you want to shut down the air conditioner, just
press the emergence switch again.
■ Press“ON/ OFF”key on the remote controller, if you can hear “beep ”
sound from the indoor unit, it means the remote controller is working and
the emergency operation has been relieved , and then you can check whether
the unit can run well in each mode by pressing the corresponding keys:
● Press “MODE”key and choose FAN mode, check whether there is air flow
blowing out from the air conditioner.
● Press “MODE”key and choose COOL mode, check whether the air flow
blowing out from the air conditioner is cool.
● Press “MODE”key and choose HEAT mode, check whether the air flow
blowing out from the air conditioner is warm.(This funciton is not
applicable for single-cooling type unit.
● Press “WIND SPEED”key and choose the high speed mode, check
whether there is a strong air flow blowing from the air conditioner.
● Press the“SWING ”key and observe Whether the air flow louver moves
normally.
5.3 Test drainage device
■ After the installation of the unit, you must carry out a test of the drainage
equipments
■ During test operation, make sure that the water in the equipment is drained
freely and no leak at the joint.
After the installation and the commissioning of the unit , the installation
personnel should introduce methods of operation and use of the unit and the
relevant safety notes according to the operation manual.
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