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MUND
CLIMA
®
SPLIT CASSETTE
User's manual
COOL ONLY:
HEAT PUMP:
MUCS-18 C
MUCS-18 H
CONTENT
Thank you purchasing this MUNDOCLIMA air conditioner. Read this MANUAL carefully prior to use of the
air conditioner and then keep it properly for future reference.
Contents
1
2
3
5
14
15
17
18
23
24
26
36
38
Operation procedureinstallation
Operation mechanism and working range
Names and functions of parts
Safety cautions
Remote control operation procedure
Optimum operation
Trouble shooting
Installation notes
Care and maintenance
Technical specifications
Installation accessories and drawings
Indoor unit installation
Outdoor unit installation
Test and check items after installation
Operation mechanism and working range.
Working temperature range.
Schematic diagram of refrigeration
1. Indoor heat-exchanger
4. Accumulator
7. Outdoor heat-exchanger
10. One-way valve
2. Connecting pipe
5. Compressor
8. Master capillary
11. Four-way reversing valve
3. Check valve
6. Filter
9. Auxiliary capillary
maximum cooling
minimum cooling
maximum heating
minimum heating
Indoor side DB/WB ( )
32/23
21/15
27/-
20/-
Outdoor side DB/WB (
)
43/26
21/15
24/18
-5/-6
Operation mechanism and working range
1
1. Schematic diagram of cooling type
2. Schematic diagram of heat pump type
Names and functions of parts.
Indoor unit
Outdoor unit
Names and functions of parts
2
Safety cautions
Read the following instructions carefully before use.
Avoid direct air flow to your body and avoid
excessive heating or cooling,which may make
you feel uncomfortable and do harm to your
health.
Do not remove protection grill nets from the
outdoor unit.
Do not reach hands or insert anything into the
unit air outlet.
If there is something abnormal (eg.burning
smell), cut off the power immeditely and con-
tact service center.
If room air is stuffy, air the room by opening
door and window for a while, but please close
the curtains when operating the unit to prevent
conditioned air from leaking.
Check whether the installed stand is still firm
enough after the unit has operated for a long
time.
If a worn-out stand is left unfixed,the unit may
topple and do harm.
Do not stand on the outdoor
unit or put anything on it, or
you may fall down or people
may get hurt by the falling
things.
Do not spray any paint or
pesticide on the unit, or it
may cause fire.
Never use wrong ampere rating fire.
Use of iron wire or copper wire may
cause the unit to break down or
cause fire.
Warning
Safety cautions
3
Safety cautions
Do not check or repair during the unit is
operating. It is very dangerous.
Never place objects near the air intake and the air outlet of the unit.
It may affect performance or stop operation of the unit.
Do not splash water directly to indoor unit
It may cause trouble or electric shock.
Do not use other
heating equip-
ment near the air
conditioner.
It will affect the
cooling perfor-
mance.
Do not bang the remote controller.and do not
press the button of the remote controller with
pointed object, or the remote controller may
be damaged.
Warning
Safety cautions
4
Remote control operation procedure
Name and Function-Remote control
SWING button
When it is pressed, the louvers
start to rotate automatically and
stop when repressed.
TEMP.button
SET TEMP. increases 1
by
pressing button once,and decreases
1
by pressing button once.
At COOL mode operation, SET
TEMP. can be selected from 16
to
30
.
At DRY mode operation, SET TEMP.
can be selected from 16
to 30 .
At HEAT mode operation, SET
TEMP. can be selected from 16
to
30
.
MODE button
press this button to change the
operation mode in order of:
Note:
Cooling only type have no
“ ” mode.
FAN button
Press this button to
change the fan speed of:
“ ” COOL mode
“ ” DRY mode
“ ” FAN mode
“ ” HEAT mode
1/0 button
Press this button to turn on
or turn off the unit.
Note:
Be sure that there are no obstructions.
Don’t drop or throw the remote controller.
Don’t place the remote controller directly in the sunlight.
Remote control operation procedure
5
AUTO
Liquid crystal displayer. It
shows all set contents.
SLEEP button
Press this button to set
SLEEP operation.
TIMER OFF button
At operating, press TIMER
OFF button, set OFF TIME
in range of 0 to 24 hour to
stop the unit automatically.
TIMER ON button
At stopping, press TIMER
ON button, set ON TIME in
range of 0 to 24 hour to start
the unit automatically.
Remote control operation procedure
Name and Function-Remote control. (Remove the cover)
Note: This type of remote controller is a kind of new current controller. some buttons of
the controller which are not available to this Air conditioner will not be described
below.
Remote control operation procedure
6
COOL mode operation procedure
4.Press FAN button, set
fan speed.
5.Press TEMP. but-
ton, set suitable
TEMP.
2.Press MODE button,
set operation
mode.
3.Press SWING button,
the louvers start to ro-
tate automatically, and
stop when repress.
1.Plug in, press 1/0 button,then air
conditioner is turned on.
Remote control operation procedure
According to difference between room temp. and set temp., microcomputer can control cooling
on or not.
If room temp. is higher than set temp., compressor runs at COOL mode.
If room temp. is lower than set temp., compressor stops and only indoor fan motor runs.
Set TEMP. should be in range of 16 to 30
Remote control operation procedure
7
HEAT mode operation procedure
If room temp. is lower than set temp., compressor runs at HEAT mode;
If room temp. is higher than set temp., compressor and outdoor fan mortor stop, only indoor
fan mortor runs.
Set TEMP. should be in range of 16 to 30
4.Press FAN button, set
fan speed.
5.Press TEMP. but-
ton, set suitable
TEMP.
1.Plug in, press 1/0 button,then air
conditioner is turned on.
2.Press MODE button,
set operation
mode.
3.Press SWING button, the
louvers start to rotate
automatically, and stop
when repress it.
Remote control operation procedure
Remote control operation procedure
8
DRY mode operation procedure
If room temp. is lower than set temp., compressor ,outdoor and indoor fan mortor stop. If
room temp. is between
2 of set temp., Air conditioner is drying.If room temp. is higher
than set temp., it’s at COOL mode.
Set TEMP. should be in range of 16 to 30
3.Press SWING button,
the louvers start to ro-
tate automatically, and
stop when repress it.
4.Press TEMP.button,set
suitable TEMP.
2.Press MODE button,set
operation mode.
1.Plug in,press 1/0 button,then air
conditioner is turned on.
Remote control operation procedure
Remote control operation procedure
9
AUTO mode operation procedure
At AUTO mode operation, standard TEMP. is 25 for COOL mode and 20 for HEAT
mode.
2.According to room temp.,micro-
computer can automatically set
operation
mode,so as for best effect.
1.Plug in,Press 1/0 button, then
air conditioner is turned on.
Remote control operation procedure
Remote control operation procedure
10
TIMER mode operation procedure
At stopping,press TIMER
ON button, set ON TIME
in range of 0 to 24 hour to
start the unit automatically.
At operating,press TIMER
OFF button.set OFF TIME
in range of 0 to 24 hour to
stop the unit automatically.
Remote control operation procedure
Remote control operation procedure
11
SLEEP mode operation procedure
4.Press FAN button, set
fan speed.
5.Press TEMP. but-
ton, set suitable
TEMP.
1.Plug in, press 1/0 button,then air
conditioner is turned on.
2.Press MODE button,
set or op-
eration mode.
3.Press SWING button,
the louvers start to rotate
automatically, and stop
when repress.
6.SLEEP button
Press it to set SLEEP
operation.
When the unit is cooling or drying, if SLEEP operation is set, TEMP. would increase 1 in 1
hour and 2
in 2 hour. Indoor fan motor runs at low speed.
When the unit is heating , if SLEEP operation is set, TEMP. would decrease 1 in 1 hour and
2
in 2 hours. Indoor fan motor runs at low speed.
Remote control operation procedure
Remote control operation procedure
12
How to insert batteries
1. Remove the cover from the back
of the remote controller.
2. Insert the two batteries ( Two AAA
dry - cell batteries ) and press but-
ton “ACL”.
3. Re - attach the cover.
Note:
Don’t confuse the new and
worn or different types of
batteries.
Remove batteries when the
remote controller is not in
use for a longtime.
1 Remove the cover.
3 Re - attach the cover.
2 Insert the 7
#
batteries.
Remote control operation procedure
Remote control operation procedure
13
Optimum operation
14
Optimum operation
Adjust the room temperature properly for a comfortable
environment.
Adjust the room temperature properly
Water may drop from the indoor unit when the humidity
is over 80% or when the drainage outlet is clogged.
Never place anything under the indoor unit that is to be kept dry.
When the main power switch is truned on, some watts of
electricity is being used even if the system is not operating.
Turn off the main power supply switch to save energy.
Turn off the main power supply swittch when it is not to be used for long periods of time
Cooling and heating performance will be affected if the
doors and windows are open for a long time.
Do not open the doors and windows for a long time when air conditioner is operating
It may cause interference in the picture or sound.
Place TV, radio, stereo, etc. at least 1m away from the indoor unit and the remote controller.
It may do harm to them.
Avoid direct air flow to pets and plants.
Trouble shooting
Warning
*
In case of something abnormal (such as bad smell), shut off the power switch immediately and contact service center.
*
Do not repare the air conditioner by yourself. Because wrong repair may cause fire, please contact service center.
Check these items shown below before contacting service center.
Pause off or fuse broken
Power off
Loose plug
Batteries of remote controller fall
Out of the remote controlling range
Object at the air intake and
air outlet of the air conditioner
Object at the air intake and
air outlet of indoor and out door units
Wrong temperature setting
Low fan speed
Air direction is not correct
Doors or windows are open
Direct sunshine
Too many people in the room
Too many heating sources
Dirty air fliter
Phenomenon
Change fause or replace fuse
It will restart when power is on
Put the plug into place
Replace batteries
Keep distance in 8m or less
Romove them
Romove them
Refer to p6
Refer to p6
Refer to p6
Close them
Close the curtain or blinber
Clean it
Cause Corrective Measures
Note:
If trouble still exists after checking the about items,please contact service center.
The system does not
operate at all
The system stops right
after it is started
Cooling and heating is
melfunctioning
Trouble shooting
15
The following are not troubles
Trouble shooting
Restart right after stopping
Press SET TEMP. and then release immediately.
Power is switched on
When cooling
after the unit is stopped
Buzz is heard at starting
Sound of running water can be heard
during operation
A “shuh” sound which is heard at the start
or immediately after the stop of operation
or which is heard at the start or immediately
after the stop of defrosting operation.
A continuous low “shah” sound is heard
when the system is in cooling operation or
at a stop.
Cracking noise can be heard during or after
operation.
Starting operation after not using for a long
time.
During operation
“Trouble” Cause
The unit does not
operate when
Mist is emitted
Outdoor unit is hot
Noise
Dust from the units
Wind from the outlet
smells
Once the unit is stopped, it will not operate
for about 3 minutes to protect it
Wati for 1 minute
Room air is chilled rapidly and becomes
foggy.
Compressor is emitting heat to get ready
for restarting.
It’s the starting sound of thermostat and
will turn low after 1 minute.
This is caused by the refrigerant flowing
inside the unit
This is the noise of refrigerant caused by
flow stop and flow change.
The noise is heard when the drainage pump
is in operation.
This is caused by the panel expanding or
contracting due to the change in
temperature.
Dust absorbed by the unit blows out
This is caused by the odors in the room
which have gotten onto the air conditioner
Trouble shooting
16
Installation notes
Location Noise
The air conditioner must be firmly installed and 3 4
liability checks must be done every year.
Avoid place whthin easy reach of young children.
Avoid other heat sources or dircect sun light.
Install indoor unit away from TV set or radio.
Avoid where inflammable gas is likely to leak.
At salty coastal areas or special areas such as the vicinity
of a sulphurous hot spring,please contact dealer before
installation to make sure it is safe to use the unit.
Not to be installed in laundries.
The air conditioner must be positioned so trat the plug
is accessible
Select a place with good ventilation or it may affect
performance or increase noise.
Install the air conditioner on a foundation that can
withstand its weight.insufficient strength may result in
the fall of equipment and cause injury.
Select a place so as not to annoy neighbor with the hot
air or noise.
Never place objects near the air outlet or the unit,it may
affect performance or increase noise.
If there is abnormal noise during the operating,contact
dealer immediately.
Installation and transportation Wiring arrangement
Installation and transportation of the unit must be done
by skilled personnel.
Be sure to use only the specified accessories and parts
for installation,failure to use may lead to electric shock,
leakage or fire.
Carry out installation with consideration of strong winds,
typhoons,or earthquakes.Improper installation work may
result in accidents due to fall of equipment.
If the unit is to be moved to other place,please consult
dealer first.
Make sure wiring is carried out by qualified personnel
according to laws and regulations and this manual,using
a separate circuit and suitable fuse.
Be sure to install an earth leakage breaker.
Diameter of power supply cord must be big enough.
(Refer to P24 about the sizes of diameter)
1. Air-conditioner is the class I appliance, it must be use the suitable earthing connection.
2. Please do not cut or change the method of use of the yellow / green earthing wire of the
air-conditioner. Otherwise, it may cause the electrical leakage.
3. Earthing resistance should be approved by Country Standard GB17790.
4. User power should be provided a reliable earthing terminal. Please do not let the earthing
wire to connect the following place:
1. Water supply
2. Gas supply
3. Sewage tube
4. Some places there are not reliable by a professional.
Earthing requirement
Water pipe
Some parts of the water pipe are made of plastic
materials and not suitable for earthing.
Gas pipe
If there is electrical leakage accidently from air
conditioner,it is easy to cause fire or explosion.
Installation notes
17
Care and maintenance
Pull out the power plug before cleaning Do not splash water directly to the unit
Warning
Please pull out the power plug after you used the air conditioner.
1.Open the suction grille
Use screwdriver screws the two screws.
Slide both knobs simultaneously as shown and
then pull them downward slowly.
How to clean the air filter
2.Remove the air filters.
Slide knobs on the back of the suction grille
outward and remove the air filter.
Then romove three air cleaners on it.
3.Clean the air filter
Use vacuum or wash the air filter with water when
the air filter is very dirty,use neutral detergent and
water.Let the filter dry naturally at shady place.
Note:
Do not clean with hot water
Do not dry over fire
Do not run the air conditioner without the air filter.
Care and maintenance
18
Care and maintenance
19
Care and maintenance
4.Fix the air filters
Replace the air filter into its holder.
Make sure that the air filter makes contact with the
filter stopper when it is replaced into its holder.
Shut the suction grille.
Refer to step 1.
1.Open the suection grille.
How to clean the suction grille
3.Remove the suction grille
Open the suction grille at 45 and then lift.
4.Wash with water.
When the suction grille is very dirty,use soft
brush and neutral detergent.Shake off water and
dry in a shady place.
Notes:Do not wash with hot water.
2.Remove the air filters.
5.Fix the suction grille
6.Fix the air filter.
7.Close the suction grille
See step 1 of “How to clean the air filter”
Refer to step 3.
See step 4 of “How to clean the air filter”
Refer to step 1.
See step 2 of “How to clean the air filter”
Care and maintenance
Before starting the air conditioner for the first time in the season
1.Check to make sure no objects obstructing the intake
and outlets parts on both the indoor and outdoor units.
2.Check to make sure ground wire is connected and
that it is not damaged.
3.Check to make sure air filter has been cleaned.
4.Turn on the power 6 hours before starting the air
conditioner.
End of seaseon cleaning
1.Clean the filter and the body of the unit.
2.Turn off power.
3.Clear outdoor unit of dust.
4.If there is any rust in the outdoor unit, this should be
painted over to prevent the rust from spreading.
Care and maintenance
20
Care and maintenance
21
Power supply and wiring requirement
1. Power frequency of air-conditioner should be 60Hz, voltage:
AC 230V±10%
If voltage are over may cause the parts of electric equipment damaged. If the voltage are too low may cause shake
on compressor, it may let the cooling system damaged, and also, the compressor and parts will not work. Voltage
should be stable, which cannot have a big fluctuation.
2. User power supply should be provided a reliable earthing connect. (see earth requirement)
3. Watt requires are large in air conditioner, power supply cord of air conditioner should be under the following
requirement:
1. Special circuit for air conditioner
2. The capacity should be at least 1.5 times of maximum current, wire cross section (the cross section area) should
be use the maximum value.
3. Including an electric leakage protection with enough capacity.
4. Including an air switch with suitable capacity, please note the following table. Air switch should be included
magnet buckle and heating buckle function, it can protect the circuit-short and overload. (Caution: please do not
use the fuse only for protect the circuit)
Air-conditioner (W)
5000
Air switch capacity
16A
1. Should have a reliable earth connection (see earth connection requirement)
2. Screw of wire should be tight, damaged screw should be changed. Self-tapping screw cannot use on electric
connection.)
3. Wire should be used by the provided one. Please do not change the wire, length and the end of it. If you need to
adjust, please contact with the local MUNDOCLIMA service center.
4. Please do not connect the plug with the non-plug wire by yourself.
5. Indoor and outdoor electrical connecting wire should not affect by elasticity and twist.
Electric connection requirement
Care and maintenance
Caution
1. Please check the earth connection before running test.
2. Voltage should be following the requirement. The voltage should not be too big after the running test (normally,
9000BTU unit not over 15V, 18000BTU unit not over 10V, 28000BTU unit not over 5V.
3. Electric meter should have enough current, watt capacity.
Care and maintenance
Other requirement
1. Installation of air conditioner must be far away from combustibles, for instance, window curtains and cloths. The
air-outlet and air-inlet of Air conditioner with heating by electricity must not block by combustibles, eg. window
curtains and cloths.
2. Please avoid to use the octopus type socket, movable socket for connect.
3. Please turn off the unit if it will not use in a long time. Remove the plug or turn off the units is a safe method.
4. Air conditioner will according to your requirement to auto switch on or off. Please do not usually turn on or off the
air conditioner, it will affect the disadvantage of the air conditioner.
5. Please do not install the unit in the place with combustibles, corrosive and with a big magnetic fields affect.
6. Please contact the retailer before using the air conditioner in the place which is close to the coast with high salty area
or close to hot spring with sulfur gas area.
Care and maintenance
22
Model MUCS-18 C MUCS-18 H
Functions Cooling Cooling/heating
Cooling capacity W 5000 5000
Heating capacity W 5500
Rated voltage and frequency 220/230V 50Hz
Cooling/Heating Input current A 10 / — 10 / 9.5
Maximum Current input A15 15
Cooling/Heating Rated power kW 2.8 / — 2.8 / 2.4
Recycling air volume m /h
3
680 680
Refrigerant
And weight
kg
R 407 C
1.95
R 407 C
1.95
Waterproof level IP X 4
Noise (indoor/outdoor) dB(A) 47 / 59
Weight (main unit/panel/outdoor) kg 20 / 5 / 65
Dimension (width x height x depth) cm
Main unit: 600 x 600 x 230
Panel: 650 x 650 x 50
Outdoor unit: 950 x 700 x 412
Technical specifications
23
Technical specifications
*
Datas listed above may be changed without informing the consumers;
*
Please see the nameplate for actual datas.
Technical specifications
Installation accessories
Accessories
Installation accessories
24
Quantity
1
1
4
10
1
4
2
1
1
2
1
2
8
1
2
L=200
10
ST4.8
13-F
5 160 300
5 45 300
3 30 150
120 65 25
30 10
ST4.2 9.5PA
7# 1.5V
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Name
Drainage hose
Clamp
Nylon fastener
Washer
Paper pad for installaition
Screws
Heat preservation Sponge for pipe
Big sealing pad
Sealing pad
Small sealing pad
Sealing bar
PVC tape
Screws
Remote controller
Battery
Notes
For indoor side pipe joint
For hole
Encase the tie-in
For remote control unit
Shape
For mounting the remote
control unit
Use for Paper pad for
installation
MUCS-18C and
MUCS-18H
MUCS-18C and
MUCS-18H
MUCS-18C and
MUCS-18H
MUCS-18C
MUCS-18H
all used
H07RN-F 5
1
H07RN-F 4 1
H05RN-F 2 0.75
H05RN-F 3
0.75
H07RN-F 5 G 2.5
Signal control wire
Power supply wire
Power connecting wire
16
17
18 H05RN-F 3 G 0.75
1
1
1
Installation drawings
Installation accessories and drawings
Indoor unit
Outdoor unit
Note:
Air conditioner must be installed by skilled personnel according to this manual.
Installation accessories and drawings
25
Location
1.Do not place object near the air oulet so that conditioned air can reach the whole room.
2.Be sure to install the indoor unit firmly and horizontly.
3.Select the place that can support 4 times of the indoor unit’s weight and will not increase noise and vibration.
4.Select a place easy to drain water and connect with the outdoor unit.
5.Make sure there is enough space for maintenance and make sure the distance between the unit and ground is 1.8m
or more.
6.Make sure the suspension bolt pitch can hold 4 times of the indoor units’s weight,otherwise,you should strengthen
the suspension bolt pitch.
Indoor unit installation
Note:
1.Keep enough distance from the kitchen.
2.The appliance shall not installed in the lundary
Hanging preparations
Firmly fasten the hanging bolts as shown in Fig.4 or by another method.
Ceiling opening and suspension bolt (M10) pitch demension.
Indoor unit installation
26
Indoor unit installation
Hanging preparations
(1) Install special nut A, then special nut B onto the hanging bolt. (Fig.6)
(2) Raise the body and mount its hooks onto the hanging bolt between the special nuts. (Fig.6)
(3) Turn special nut B to adjust the height of the body. (Fig.6)
(4) Leveling a level, or vinyl hose filled with water, fine adjust so that the body is level.
Indoor unit installation
27
Fig.5
Warning
Perform final tightening by tightening the double nut firmly.
Fig.6
Indoor unit installation
Fig.7
Installing drain pipe
NOTE: Install the drain pipe.
Install be drain pipe with downward gradient (1/50 to 1/100) and so there are no rises or traps in the pipe.
Use general hard polyvinyl chloride pipe (VP25) [outside diameter 1-1/4” (32mm)] and connect it with adhesive
(polyvinyl chloride) so that there is no leakage.
When the pipe is long, install supporters.
Always heat insulate the indoor side of the drain pipe.
When desiring a high drain pipe height, raise it up to 15” (400 mm) or less from the ceiling within a range of 6”
(150mm) from the body. Arise dimension over this range will cause leakage.
Fig.7
Indoor unit installation
28
Indoor unit installation
Connecting the pipes
Besure to use both a spanner and wrench together as shown in the drawing during connecting or disconnecting pipes
to/from the unit.
The pipe of water-in/out is pipe thread G3/4.The surface of thread should be enlaced by the two or three-circles trap.
After the water-in pipe and water-out pipe is connecting tightly,starting the water pump,then checking it’s airproof
performance.
Insulate it as shown in the drawing below.
Use sealing pad (10) to wrap the water-in/out pipe and the insulation (8).
Indoor unit installation
29
Fig.9
Fig.10
Socket wrench
Torque wrench
Medium sponge
(wrap the joint with the sealing pad)
Wire clamp (X4)
Insulation for fitting
(attached
)
Water-in pipe
Water-out pipe
Indoor unit installation
Electrical wiring
How to connect wiring to the terminals
A. For solid core wiring (or F-cable)
(1) Cut the wire end with a wire cutter or wire-cutting pkiers, then stuip the insulation to about 15/16” (25mm) of
expose thn solid wire.
(2) Using a screwdriver,remove the terminal screw (s) on the terminal board.
(3) Using pliers, bend the solid wire to form a loop suitable for the terminal screw.
(4) Shape the loop wire properly, place it on the terminal board and tighten securely with the terminal screw using a
screw driver.
B. For strand wiring
(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip the insulation to about 3/8” (10mm) of expose
the solid wire.
(2) Using a screwdriver, remove the terminal screw (s) on the terminal board.
(3) Using a round terminal fastener or pliers, securely clamp a round terminal to each stripped wire end.
(4) Position the round terminal wire, and replace and tighten the terminal screw using a screwdriver.
Fig.11
A. Solid wire
B. Strand wire
Strip 15/16” (25 mm)
Insulation
Loop
Strip 3/8” (10 mm)
Round
terminal
Screw with
special washer
Screw with
special washer
Wire
Round
terminal
Terminal
board
Round
terminal
Wire
Indoor unit installation
30
Indoor unit installation
Indoor unit side
Remove the control box cover and install the connection cord. (Fig. 12 and 13)
Indoor unit installation
31
Fig.12
Fig.13
Control box cover
brown blue
YE/GN
3-core rubber cable
(to outdoor unit)
Indoor unit installation
Bolting the grille assembly to the body
Install the grille assembly to the body with the four bolts,spring washers,and washers.
Wireless unit connection wire wiring
(1). Connect the connector in accorbance part A detail view.
(2). Then clamp the lead wire with clamp so that it does not touch the rotating parts.
Fig.16
Fig.17
Washer
Spring washer
Bolt
No gap between ceiling and
grille around entire periphery.
Indoor unit installation
32
Indoor unit installation
Indoor unit installation
33
Fig.18 Part A detail view
Installing/Removing the intake grille
1. Installing the intake grille
(1) Full insert the intake grille hooks into the rectangular holes in the panel.
Fig.19
(2) Close the intake grille,then slide the tow grille stoppers outward.
Fig.20
Indoor unit installation
2.Removing the intake grille
(1) Slide the two grille stoppers inward,and then open the iotake grill.
Fig.21
Grille stopper
(2) Remove the geille hook screws, and then open the intake grille.
Fig.22
(3) Open the intake grille so that it is at an angle of 20° to 40° ,and then remove the grille.
Fig.23
Caution:
(1)the louver angle cannot be changed if the power is not no, (It moved by hand,ir may be damaged.)
(2) The grille assembly is directional relative to the air condirioner body.
(3) Install so that there is no gap between the grille assembly and the air conditioner body.
Grille hook
Indoor unit installation
34
Connection of refrigerant pipe
Besure to use both a spanner and torque wrench together as shown in the drawing,connecting or disconnecting pipes
to/from the unit.
Refer to table 1 to determine the proper tightening torque (over tightening may damage the flare and cause leaks.)
When conecting the flare nut,coat the flare both inside and outside with refrigerating machine oil and initially
tighten by hand 3 or 4 turns.
Check the pipe connector for gas leaks,then insulate it as shown in the drawing below.
Use sealing pad (11) to wrap joint between gas pipe and the insulation(8).
Indoor unit installation
Table 1
The maximun leagth for refrigerant piping is 25 meters, when the length exceeds 10 meters, you should charge additional
(refrigerant as shown in following for per-meter added).
Pipe gauge
9.52
16
Tightening torque
30 40N.m
60
65N.m
Notes
Add 30g
Indoor unit installation
35
Outdoor unit installation
Selecting installation site
Select an installation site where the folliwing conditions are satisfied and that meets with your customer’s approval.
Places which are well-ventilated.
Safe places which can withstand the unit’s weight and vibration and where the unit can be installed level.
Places where the unit does not bother next-door neighbors.
Places where there is no possibility of flammable gas leak.
Places where things distressed in water do not exist because water drains off the outdoor unit.
Places where servicing space can be well ensured.
Places where strong wind can not blow directly to outdoor unit.
Outdoor unit installation
1.Install the unit firmly with combination of
M10 or more bolts and nuts on the
foundation that can fully support the weight
of the unit.and make sure the unit stand
vertically.
2.Do not installing the unit on the top of
building.
3.If there is noise caused by vibration add
rubber between the unit and the foundation,
Please.
4.When the air conditioner is heating or
defrosting,drain water of the outdoor unit
to an appropriate place with the drain hose.
5.Fixing mothod:Fix the outdoor drainage
hose head in the hole of the chassis,then
connect the drainage hose with the mouth
of drainage pipe.
Connecting the pipe.
1. Remove the flare nuts of the valves.
2. Match the piping center,tighten the flare
nuts with hand.
3. Tightening the flare nuts with a driver.
4. Romove the nuts of one-way valve.
5. Loosen the valve spindle with a hexogen
wrench and press the needle to let gas out.
6. Affter 15 seconds when refrigerant gas
leaks out, turn off the valve and fighten the
nuts.
7. Fully open valves.(Fig.9)
8. Tighten the nuts, then check whether there
is gas leaking out.
* If possible, evacuate from the one-way
valve with a vaccum pump. (Fig. 10)
Outdoor unit installation
36
Outdoor unit installation
Electric wiring
(1) Read the name plate carefully,then arrange wiring according to the “WIRING DIAGRAM”.
(2) A circuit breaker capable of shutting down power supply to the entire system must be installed.
(3) Earth properly.
(4) All wiring must be perfomed by a skilled electrican according to the “WIRING DIAGRAM”. Wrong wiring may
cause fire of electric shock.
Connect the power connecting wires
(1) Remove the front side plate (Fig.11)
(2) Break through the hole for wires and put on rubber bush.
(3) Pull all wires through the rubber bush.
(4) Connect the outdoor unit according to the “WIRING DIAGAM” of outdoor unit.Make sure to wire firmly.
(5) Tighten the wires with clamp and clasp.
Note
(1) Earth the units firmly.
(2) Wire the units firmly.
(3) Don’t pull the connector too forcefully.
(4) For cooling only type:
Connect the rubber wire (3-cords) to L.N1 of the power supply terminal board (6p) and the rubber wire (3-
cords) to L1,N1 , of the power supply terminal board (6p) accordingly.
(5) Connect the other wires porperly.
Do not pull the wire when fixing it with
wire clamp and clasp.
Do not let the wire too loose in the outdoor
unit.
Outdoor unit installation
37
Test and check item after installation
Test operation
1. Prepare for test
(1) Do not turn on the power switch before all installation is finsihed.
(2) Connect wires corectly and firmly.
(3) Open the check valve.
(4) Remove all dust.
2. Testing
(1) Turn on the power switch and press “1/0” button.
(2) Press “MODE” button select COOL,HEAT,FAN,etc to test whether it
operates mormally.
3.Emergency operation.
When the batteries fail or when the remote controller is missing,operate as
shown below.
*
On stopping you can press the “AUTO” button on cover NO.
unitl it is in “AUTO” mode.
The air conditioner select from COOL,HEAT,DRY,FAN
modes automatically.
*
On operating,press the “AUTO” button,the air conditioner will stop.
Note to the installer
Be sure to instruct the customer how to operate the system and show him/her the attached operation manual.
Items to check
Is the indoor unit fixed firmly?
Is the gas leak test finished?
Is the unit fully insulated?
Does drainage flow smoothly?
Does the power supply voltage correspond to
that shown on the nameplate
Are wiring and piping correct?
Is the unit safely grounded?
Is wiring size according to specifications?
Is something blocking the air outlet or intake
of either the indoor or outdoor units?
Have records of refrigerant piping length and
additional refrigerant charge been made?
If not properly done,what is likely to happen
The unit may drop,vibrate or make noise.
It may result in insufficient cooling.
Condensate water may drip.
Condensate water may drip.
The unit may malfunction or the components burn
out.
The unit may malfunction or the components burn
out.
Risk of electric leakage.
The unit may malfunction or the components burn
out.
It may result insufficient cooling.
Volume of refrigerant charge in the system is not
clear.
Check
Note
The “TEST” button on the cover No. is specially for testing the air conditioner.
When pressing it,the air conditioner will be forced to operate or stop.Do not press
it when air conditioner is in normal operation.
For the following items,take special care during construction and check after installation is finished.
Test and check item after installation
38
40

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