Operation & Installation
Manual
No. 0010576612
C
AC28NAFBEA
AC36NAFBEA
AC42NAFBEA
AC52NAFBEA
&EXPOSED CEILING/FLOOR MOUNTING
AIR CONDITIONER
CONVERTIBLE CEILING/FLOOR MOUNTING
Please read this operation manual before using the air conditioner.
Please keep this manual carefully and safely.
05.10.20***15*
051123**2****
Contents
Cautions
...........................................................................
Safety Precautions
...........................................................
Features and Functions
...................................................
Name of Parts
.....................................................................
Cleaning and Care
..............................................................
Operation Tips
.................................................................
Installation of Indoor Unit
...........................................
Trouble Shooting..............
...........................................
1-2
3-4
5-7
8
9
10
11-25
26-27
Cautions
1
Disposal of the old air conditioner
Before disposing an old air conditioner that
goes out of use, please make sure it's
inoperative and safe. Unplug the air
conditioner in order to avoid the risk of
child entrapment.
It must be noticed that air conditioner
system contains refrigerants, which require
specialized waste disposal. The valuable
materials contained in a air conditioner can
be recycled. Contact your local waste
disposal center for proper disposal of an
old air conditioner and contact your local
authority or your dealer if you have any
question. Please ensure that the pipework
of your air conditioner does not get
damaged prior to being picked up by the
relevant waste disposal center, and
contribute to environmental awareness by
insisting on an appropriate, anti-pollution
method of disposal.
Disposal of the packaging of your new
air conditioner
All the packaging materials employed in
the package of your new air conditioner
may be disposed without any danger to the
environment.
The cardboard box may be broken or cut
into smaller pieces and given to a waste
paper disposal service. The wrapping bag
made of polyethylene and the polyethylene
foam pads contain no fluorochloric
hydrocarbon.
All these valuable materials may be taken to
a waste collecting center and used again after
adequate recycling.
Consult your local authorities for the name
and address of the waste materials collecting
centers and waste paper disposal services
nearest to your house.
Safety Instructions and Warnings
Before starting the air conditioner,
read the information given in the
User's Guide carefully. The User's
Guide contains very important
observations relating to the assembly,
operation and maintenance of the air
conditioner.
The manufacturer does not accept
responsibility for any damages that
may arise due to non-observation of
the following instruction.
Damaged air conditioners are not to be
put into operation. In case of doubt, consult
your supplier.
Use of the air conditioner is to be carried
out in strict compliance with the relative
instructions set forth in the User's Guide.
Installation shall be done by professional
people, don't install unit by yourself.
2
Cautions
Model
Zmax value
AC28NAFBEA
AC36NAFBEA
AC42NAFBEA
AC52NAFBEA
For Three-Phase
<0.3040OHM
<0.2895OHM
<0.2468OHM
*******
<0.3933OHM
For Single-Phase
<0.0901OHM
051123***
For the purpose of safety, the air
conditioner must be properly grounded in
accordance with specifications.
Always remember to unplug the air
conditioner before opening inlet grill
(page8). Never unplug your air conditioner
by pulling on the power cord. Always grip
plug firmly and pull straight out from the
outlet.
All electrical repairs must be carried out
by qualified electricians. Inadequate repairs
may result in a major source of danger for
the user of the air conditoiner
.
Do not damage any parts of the air
conditioner that carry refrigerant by
piercing or perforating the air conditioner's
tubes with sharp or pointed items, crushing
or twisting any tubes, or scraping the
coatings off the surfaces. If the refrigerant
spurts out and gets into eyes, it may result
in serious eye injuries.
Do not obstruct or cover the ventilation
grille of the air conditioner. Do not put
fingers or any other things into the
inlet/outlet and swing louver.
Do not allow children to play with the air
conditioner. In no case should children be
allowed to sit on the outdoor unit.
The refrigerating circuit is leak-proof.
The following consults are according
to the EMC testing.For
AC28/36/42/52NAFBEA, we find that
though poor conditions of the electrical
MAINS, shortly voltage drops can appear
when starting the EQUIPMENT. This
can influence other equipement (eg.
Blinking of a lamp ). But if the MainsImpedance Zmax value can meet the
below chart, such desturbances are not
expected. (In case of need, you may
contact your local supply authority for
further information ).
3
Safety Precautions
WARNING!
DANGER!
Do not attempt to install this air conditioner by yourself.
This unit contains no user
-serviceable parts. Always consult authorized service personnel
for repairs.
When moving, consult authorized service personnel for disconnection and installation of
the unit.
Do not become excessively chilled by staying for lengthy periods in the direct cooling
airflow.
Do not insert fingers or objects into the outlet port or intake grills.
Do not start and stop air conditioner operation by connecting and disconnecting the
power supply cord and so on.
Take care not to damage the power supply cord. If the supply card is danaged, it must be
replaied by the manufacturer or authoried service agent in order to avoid a hazard.
In the event of a malfunction (burning smell, etc.), stop operation immediately, turn off
the circuit breaker, and consult authorized service personnel.
For series 28,36,42,52, the breaker of the air conditioner should be all-pole switch; and
the distance between its two contacts should be no less 3mm. Such means for
disconnection must be incorporation in the fixed wiring.
Use copper wire only
. All the cables shall have got the European authentication certificate.
For series 28,36,42,52, the power supply connects from the outdoor side. The connecting
cable are self-provided.
The parameter of connecting cable: 3G 1.5mm
2
+ 1G 0.75mm2 .
The requirement of the cross section area of the power supply cord:
For series 28 (Power supply: 380-400V, 3N~,50Hz), 36,42,52, H07RN-F 5G 2.5mm2.
For series 28 (Power supply :1PH,220-230V~,50Hz), H07RN-F 4G 3.5mm2.
For the above specs, if the power cable or the connecting wire is more than 3 meter,
please enlarge the wire diameter accordingly.
The paramter of Indoor and Outdoor unit:T3.15A/250VAC.If the fuse on PC board is
broken, please change with the type.
4
Safety Precautions
WARNING!
Provide occasional ventilation during use.
Do not direct air flow at fire places or heating apparatuses.
Do not climb on and place objects on the air conditioner.
Do not hang objects from the indoor unit.
Do not set flower vases or water containers on top of the air conditioner.
Do not expose the air conditioner directly to water.
Do not operate the air conditioner with wet hands.
Do not pull power supply cord.
Turn off power source when not using the unit for extended periods.
Check the condition of the installation stand for damage.
Do not place animals or plants in the direct path of the air flow.
Do not drink the water drained from the air conditioner.
Do not use in applications involving the storage of foods, plants or animals, precision
equipment, or art works.
Do not apply any heavy pressure to radiator fins.
Operate only with air filters installed.
Do not block or cover the intake grill and outlet port.
Ensure that any electronic equipment is at least one metre away from either the indoor
or outdoor unit.
Avoid installing the air conditioner near a fireplace or other heating apparatuses.
When installing the indoor and outdoor unit, take precautions to prevent access to infants.
Do not use inflammable gases near the air conditioner.
5
Features and Functions
AUTOMATIC OPERATION
SLEEP
HEAT & COOL TYPE
Merely press the ON/OFF button, and the unit will begin automatic operation in any of the
Heating, Cooling and Blow modes as appropriate, in accordance with the thermostat setting and
the actual temperature of the room.
COOLING TYPE
When the SLEEP button is pressed during Cooling or Dry mode, the thermostat setting
gradually rises during the period of operation. When the set time is reached, the unit
automatically turns off.
HEAT & COOL TYPE
When the SLEEP button is pressed during Heating mode, the air conditioner's thermostat
setting gradually lowers during the period of operation; When the set time is reached, the
unit automatically turns off.
WIRELESS REMOTE CONTROL UNIT
The WIRELESS REMOTE CONTROL UNIT allows convenient control of air conditioner
operation.For this type unit, the wireless remote controllor type is YR-H50.
MILDEW-RESISTANT FILTER
The AIR FILTER has been treated to resist mildew growth, thus allowing cleaner use and
easier care.
COOLING TYPE
Merely press the ON/OFF button, and the unit will begin automatic operation in the Cooling
or dry modes as appropriate, in accordance with the thermostat setting and the actual temperature
of the room.
6
Features and Functions
VERTICAL AIR DIRECTION ADJUSTMENT
Use the air direction adjustment within the ranges shown above.
HORIZONTAL AIR DIRECTION ADJUSTMENT
Each time the button is pressed, the air direction range will change as follows:
Press the AIR FLOW DIRECTION VERTICAL SET button.
The vertical airflow direction is set automatically as shown, in accordance with the type of
operation selected.
Press the AIR FLOW DIRECTION HORIZONTAL SET button.
1
2 3
4
5
5
4 3
2
1
Cool/Dehumidification/Fan:
Heat:
1
2
3
4
5
1
2
3
4
5
Use the air direction adjustments within the ranges shown above.
Each time the button is pressed, the air direction range will change as follows:
Features and Functions
7
The swing range of up-down flap is as follow :
air direction louvers
RIGHT/LEFT
1
2 3
4
5
3
2
1
24
1
5
4 5
1
2
3
4
5
Air flow direction set Range of swing
1
2
3
4
5
1
1
2
3
1
to
3
to
3
to
4
to
5
to5(all range)
Note :
When being switched on firstly, the up-down flap will be at the position of max.angle.
In cooling, the up-down louver is not good to stay at position 4, 5 for along time,
otherwise, the dew will occur.
Name of Parts
8
1 Operating Control Panel
2 Emergency switch
3 Power Indicator Lamp
4 OPERATION Indicator Lamp
5 TIMER Indicator Lamp
6 Compressor Lamp
7 Remote receiver
8 Inlet Grill ( Filter inside )
9 Front panel
4
5 6
1
POWER OPER TIMER
EMER
2
COMP
3
for series 28,36,42,52
8
9
1
7
9
The following four procedures are for series 28,36,42,52.
1. Pull the filters upward to remove them from the Intake Grill.
2. Clean the air filter: Remove the dust from the filters by vacuum cleaner or washing them.
After washing, allow the air filters to dry thoroughly in an area protected from sunlight.
3. Re-attach the air filters to the Intake Grill, press the two buttons on the filters, until you hear
a sound of click.
When used for extended periods, the unit may accumulate dirt inside, which reduces its
performance. We recommend that the unit is inspected regularly, in addition to your own
cleaning and care. For more information, consult authorized service personnel.
When cleaning the unit's body, do not use water hotter than 40 C, harsh abrasive
cleansers, or volatile agents like benzene or thinner.
Do not expose the unit body to liquid insecticides or hairsprays.
When shutting down the unit for one month or more, first allow the Fan mode to operate
continuously for about half a day to allow internal parts to dry thoroughly.
Cleaning and Care
o
10
Operation and Performance
*Heating Performance
*Microcomputer-controlled Automatic Defrosting
Heat-pump air conditioners heat your entire room
by recirculating air throughout the room, with the
result that some time may be required after first
starting the air conditioner until the room is heated.
This air conditioner operates on the heat-pump
principle, absorbing heat from outdoor air and
transferring that heat indoors. As a result, the
operating performance is reduced as outdoor air
temperature drops. If you feel that insufficient
heating perfomance is being produced, we
recommend you use this air conditioner in
conjunction with another kind of heating
appliance.
Instructions relating to heating (*) are applicable
only to "HEAT & COOL TYPE".
When using the Heating mode under conditions of
low outdoor air temperature high humidity, frost
may form on the outdoor unit, resulting in reduced
operating performance.
In order to prevent this kind of reduced
performance, this unit is equipped with a
Microcomputer-controlled Automatic Defrosting
function. If frost forms, the air conditioner will
temporarily stop, and the defrosting circuit will
operate briefly (for about 7 to 12 minutes).
During Automatic Defrosting operation, the
OPERATION Indicator Lamp will flash.
*Trouble alarming performance
During operation, when there is any trouble,
the operation indicator lamp will flash with different
times.
Operation Tips
Temperature and Humidity Range
If the air conditioner is used under higher temperature condition than those listed, the built-in protection
circuit may operate to prevent internal circuit damage. Also, during Cooling and Dry modes, if the unit is
used under conditions of lower temperature than those listed above, the heat-exchanger may freeze, leading
to water leakage and other damage.
Do not use this unit for any other purposes except for the Cooling, Heating, Dehumidifying, and aircirculation of rooms in ordinary dwellings.
The wiring method should be in line with the local wiring standand.
The waste battery should be disposed properly.
If the fuse on PC board is broken, please change it with the type T 3.15A/250VAC.
The indoor unit installation height is at least 2.5m, only for series 28,36,42,52.
Cooling
Heating
Indoor
outdoor
Rated Maximum Minimum
27 32 18
19 23 14
35 43 10
24 26 6
20 27 15
14.5 -- - 7 24 -7
6 18 --
DB C
WB C
DB C
WB C
Indoor
outdoor
DB C
WB C
DB C
WB C
11
WARNING !
CAUTION !
Please ask the dealer or specialist to install, never try by the users themselves. After the installation please
be sure of the following conditions.
Incorrect installation may cause water leaking, shock and fire hazard.
Please call dealer to install the air-conditioner.
Air-conditioner can't be installed in the environment with inflammable gases because the
inflammable gases near to air-conditioner may
cause fire hazard.
Installed electrical-leaking circuit breaker.
Connect earthing wire.
Use discharge pipe correctly to ensure efficient
discharge.
[Location]
[Wiring]
[Operating noise]
It easily cause electrical shock without circuit
breaker.
Air-conditioner should be located in well-vented
and easily-accessible place.
Air-conditioner should not be located in the
following places:
(a) Places with machine oils or other oil vapours.
(b) Seaside with high salt content in the air.
(c) Near to hot spring with high content of sulfide
gases.
(d) Area with frequent fluctuation of voltage e.g.
factory, etc.
(e) In vehicles or ships.
(f) Kitchen with heavy oil vapour or humidity.
(g) Near to the machine emitting electric-magnetic
waves.
(h) Places with acid, alkali vapuor.
TV, radio, acoustic appliances, etc. are at least 1
m far away to the indoor unit, outdoor unit, power
Earthing wire should not be connected to the gas pipe, water pipe,
lightning rod or phone line, incorrect earthing may cause shock.
Incorrect pipe use may cause water leaking.
supply wire, connecting wire, pipes, otherwise
images may be disturbed or noises be created.
As required, take measures against heavy snow.
Air-conditioner should be equipped with special
power supply wire.
Choose the following locations:
(a) Capable of supporting air-conditioner weight,
don't increase operating noise and vibration.
(b) Hot vapour from outdoor unit outlet and ope rating noise don't disturb neighbour.
No obstacles around the outdoor unit outlet.
Earthing
Installation of Indoor Unit
1. SELECTING THE MOUNTING POSITION
For authorized service personnel only
WARNING
WARNING
CAUTION
Installation of Indoor Unit
12
Be careful not to scratch the room air conditioner when handing it.
After installation, explain correct operation to the customer, according to the operating
manual.
Let the customer keep this installation manual because it will be used when the room
air conditioner is serviced or moved.
(1) For the room air conditioner to operate satisfactorily, install it as outlined in this
installation manual.
(2) Connect the indoor unit and outdoor unit with the room air conditioner piping and
cords available from our standard parts. This installation manual describes for the
correct connections so that the installation set available from our standard parts should
be used.
(3) Installation work must be performed in accordance with national wiring standards
by authorized personnel only.
(4) Never cut the power cord, lengthen or shorten the cord, or change the plug.
(5) Also, do not use an extension cord.
(6) Plug in the power cord plug firmly. If the receptacle is loose, repair it before using
the room air conditioner.
(7) Do not turn on the power until all installation work is done.
Do not install the unit where there is the danger of combustible gas leakage.
Do not install near heat sources.
If children under 10 years old may approach the unit, take preventive measures so
that they cannot reach the unit.
Install at a place that can withstand the weight of the indoor unit and install it
positively so that the unit will not topple or fall.
FOR HALF CONCEALED INSTALLATION
(1) Install the indoor unit level on a strong wall which is not subject to vibration.
Installation of Indoor Unit
13
(2) The inlet and outlet ports should not be obstructed : the air should be able to blow all
over the room.
(3) Do not install the unit where it will be exposed to direct sunlight ,
(6) Take servicing , etc.into consideration and leave the spaces shown in (Fig.1 or 2) .
Also install the unit where the filter can be removed .
(4) Install the unit where connection to the outdoor unit is easy.
(5) Install the unit where the drain pipe can be easily installed.
Ceiling
INDOOR UNIT
3"(80mm)
over
6"(150mm)
over
0.4"(10mm)
over
Ceiling panel
INDOOR UNIT
3"(80mm)
over
6"(150mm)
over
0.4"(10mm)
over
Ceiling panel
Fig. 1
Fig. 2
Optional parts
STANDARD PARTS
The following installation parts are furnished.
Use them as required.
ACCESSORIES
14
Installation of Indoor Unit
Ceiling panel
Mark Parts name
Adhesive tape
Saddle (L.S) with screws
Drain hose
Heat insulation material
Piping hole cover
Putty
Plastic clamp
A
B
C
D
E
F
G
1
2
3
4
5
1
2
4
1+1
2+2+4
No.
Accessory parts
Qty.
Remote controller
Battery
Wire clamp
Heat
insulation
sheathing
Screw
Screw cap
Remote
controller
bracket
6
1
1+1
8
7
8
Flat washer
9
Rubber base foot
4
Small flat washer
10
4
INST ALLATION PROCEDURE
Install the room air conditioner as follows:
CONNECTION PIPE REQUIREMENT
Table 1
Model
Diameter
Liquid side Gas side
Maximum
length
Maximum height
(between indoor
and outdoor)
9.52 mm 19.05mm
50 m 30 m
AC36NAFBEA AC42NAFBEA
AC52NAFBEA
15
Installation of Indoor Unit
1. REMOVE THE INTAKE GRILL AND SIDE COVER
(1) Remove the Air filters
2. LOCATION OF CEILING SUSPENSION BOLTS
For half-concealed installation
Supension-bolt pitch should be as shown in Fig.4.
Ceiling Opening:1530mm
40mm 40mm
Ceiling panel
Suspension bolt should
extend outward 30 to 50mm.
Ceiling Opening:640mm
Ceiling panel
15mm
(2) Remove the intake grilles
(3) Remove the Side cover A (Right and left side)
(4) This air conditioner can be set up to intake
fresh air . For information about how to install for
fresh-air intake, refer to page 23 "FRESH-AIR INTAKE".
Suspension bolt should
extend outward 30 to 50mm.
Suspension bolt pitch 1530mm
30mm
30mm
INDOOR UNIT (TOP VIEW)
Dimensions
(Space Required for
installation)
10mm
155mm
300mm
Fig. 3
Fig. 4
Side cover A (Right side) Side cover A (Left side)
Intake grille
Air filter
AC28NAFBEA
9.52 mm 15.88mm
30 m 20 m
*
16
Installation of Indoor Unit
3. DRILLING THE HOLES AND ATTACHING THE SUAPENSION BOLTS
IF USING ANCHOR BOLTS
(1) Drill holes for anchor bolts at the locations at which you will set the suspension bolts.
Note that anchor bolts (to be obtained locally).
(2) Install the anchor bolts ,then temporarily attach special nut "B" (included) and a
locally-procurde M10 nut to each of the bolts. (See Fig.6.)
M10 Nut
(Obtaied locally)
INSTALLING THE INDOOR UNIT
(1) Lift unit so that suspension bolts pass through suspension fittings at the sides (four
places),and slide the unit back.(See Fig.8.)
(1) Drill 25mm holes at the suspension-bolt locations.
(The two special nuts are provided with the unit. The M10 nut must be obtained locally.)
Refer to Fig.5.
(2) Install the bolts, then temporarily attach Special nuts A and B and a normal M10 nut
to each bolt.
**
Ceiling panel
10 to 15 mm
Special nut A (included)
M10 nut (Obtained locally)
Special nut B (included)
Bolt Strength
980 to 1470 N (100 TO 150 kgf)
Special nut B
(included)
10 to 15 mm
M10 Nut
(Obtaied locally)
Anchor-Bolt Strength 980 to 1470 N (100 TO 150 kgf)
Fig. 5
Fig. 6
FOR HALF-CONCESLED INSTALLATION
In order to check the drainage, be sure to use a level during installation of the indoor
unit. If the installation site of the indoor unit is not level, water leskage may occur
CAUTION
Installation of Indoor Unit
Ceiling panel
Wall
When installing the indoor unit in a semi-concesled orientation, make sure to reinforce the
insulation of the unit on all sides. Drops of water may fall from the unit if it is not
thoroughly insulated.
Glass wool insulate
(10 to 20mm thick )
INDOOR UNIT
(Top view)
Wall
Ceiling pannel
(2) Fasten the indoor unit into place by tightening-up the special "B",blots and the M10
nuts. Make sure that unit is secure and willl not shift back and forth.
Wall
Ceiling
17
Fig. 7 Fig. 8
Fig. 9
INSTALLING THE COUPLER HEAT INSULATION
After checking for gas leaks, insulate by wrapping insulation around the two parts (large
and small) of the indoor unit coupling, using the coupler hest insulation.
After installling the coupler heat insulation, wrap both ends with vinyl tape so that there
is no gap.
Secure both ends of the heat insulation material using nylon fasteners.
When using an auxiliary pipe, make sure that the fastener used is insulated in the
sane way.
18
Installation of Indoor Unit
Indoor unit
Nylon fastner (large)
Nylon fastner (small)
No gap
Coupler heat insulation
Coupler heat insulation(large)
Coupler pipe (large)
Coupler pipe (small)
Coupler heat insulation(small)
Indoor unit
Fig. 10
When installing the unit on the floor, fix the four rubber base feet in the accessories on
the bottom plate of the unit with four 4x16 screws and 4 flat washers,as the position in
the figure.
Notice
A
The bottom plate of the unit.
4:1
A
rubber base foot
4x16 screw
flat washer
19
Installation of Indoor Unit
DRAIN PIPING
Install the 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 38 mm.]
During installation of the drain pipe,be careful to avoid applying pressure to the drain
point of the unit.
When the pipe is long,install supporters(Fig 11).
Do not perform air bleeding.
Always heat insulate (8mm or over thick) the indoor side of the drain pipe.
BAD
GOOD
BAD
Supporter
5 to 6.5 ft
(1.5 to 2m)
Fig. 11
20
Installation of Indoor Unit
(1) Install insulation for the drain pipe.(See Fig.12 and 13)
Cut the included insulation material to an appropriate size and adhere it to the pipe.
Insulation for Drain pipe
(To be obtained locally.Length shoud
be at least 8mm.)
Indoor unit(drain port)
Drain pipe insulation (accessories)
Drain pipe
Indoor unit
No gap
10mm or over
Drain pipe
Drain pipe insulation
(2) If "Right rear piping ":fasten the drain pipe with VT wires so that the pipe slopes
correctly within the indoor unit.
Fig. 12
Fig. 13
21
Installation of Indoor Unit
ELECTRICAL WIRING
HOW TO CONNECT WIRING TO THE TERMINALS
(1)Cut the wire and with a wire cutter or wire-cutting pliers,then strip the insulation to
about 15/16"(25mm) of expose the 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.
B.For strand wiring
(1)Cut the wire and 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.
A.For solid core wiring (or F-cable)
Screw with
special washer
Round
terminal
Wire
Terminal
board
Screw with
special washer
Round
terminal
Wire
A. Solid wire
B. Strand wire
Round terminal
Loop
Insulation
Strip 15/16"(25mm)
Strip 15/16"(25mm)
After passing the connection cord and power cable through the insulation tube, fasten
it with the cord clamp, as shown in Fig.15
HOW TO FIXED CONNECTION CORD AND POWER CABLE AT THE CORD
CLAMP
Fig. 14
22
Installation of Indoor Unit
Insulation tube
Cord clamp
Use VW-1, 0.5 to 1.0 mm thick, PVC tube as the insulation tube.
CAUTION
(1) Match the terminal block numbers and connection cord colors with those of the
outdoor unit.
Erroneous wiring may cause burning of the electric parts.
(2) Connect the connection cords firmly to the terminal block. Imperfect installation
may cause a fire.
(3) Always fasten the outside covering of the connection cord with the cord clamp.
(If the insulator is chafed, electric leakage may occur.)
(4) Always connect the ground wire.
ELECTRICAL REQUIREMENT
Electric wire size and fuse capacity:
Table 5
Series
Connection
cord
(mm2)
Fuse capacity(A)
MAX
MIN
28,36,42,52
3.5
2.0
30
Fig. 15
23
Installation of Indoor Unit
FRESH-AIR INTAKE
(1)Open up the knockout hole for the fresh-air intake,as shown in Fig.16 (If using
half-concealed installation ,open up the top knockout hole instead)
CAUTION
(1)When removing the cabinet(iron plate),be careful not to damage the indoor unit
internal parts and surrounding area(outer case).
(2)When processing the cabinet(iron plate),be careful not to injury yourself with
burrs,etc.
(2)Fasten the round flange (optional) to the fresh air intake,as shown in Fig.17 (If using
half-concealed installation, attach to the top.)
[After completing " INDOOR UNIT INSTALLATION"....]
(3)Connect the duct to the round flange.
(4)Seal with a band and vinyl tape,etc.so that air does not leak from the connection.
Duct
Fig. 16
Fig. 17
Fig. 18
For half-concealed
Round duct (option parts)
WARNING
(1) Remove the cord clamp.
(2) Process the end of the connection cords
to the dimensions shown in Fig.19.
(3) Connect the end of the connection cord
fully into theterminal block.
(4) Fasten the connection cord with a cord clamp.
(5) Fasten the end of the connection cord with the screw.
(6) For series 28,36,42,52, the power cable and connecting cable are self-provided.
(1) Always use a special branch circuit and install a special receptacle to supply power to the room air
conditioner.
(2) Use a circuit breaker and receptacle matched to the capacity of the room air conditioner.
(3) The circuit breaker is installed in the permanent wiring. Always use a circuit that can trip all the
poles of the wiring and has an isolation distance of at least 3mm between the contacts of each pole.
(4) Perform wiring work in accordance with standards so that the room air conditioner can be
operated safely and positively.
(5) Install a leakage circuit breaker in accordance with the related laws and regulations and electric
company standards.
24
Installation of Indoor Unit
OUTDOOR UNIT
TERMINIAL BLOCK
INDOOR UNIT
TERMINIAL BLOCK
POWER SUPPLY:
380-400V, 3N~,50Hz
R S T
N 1 2 3
1 2 3
W B R Y/G
Y/G
Y/G
Fig. 19
OUTDOOR UNIT
TERMINIAL BLOCK
For single phase (1PH, 220-230V~, 50Hz),outdoor unit.
1PH,220-230V~,50Hz
POWER
SUPPLY:
INDOOR UNIT
TERMINIAL BLOCK
L N
W B
Y/G
Y/G
1 2 3
W
B
R
Y/G
1 2 3
W
B
R
Y/G
Y/G
For three phase (380-400V, 3N~, 50Hz),outdoor unit.
TEST RUNNING
1. CHECK ITEMS
(1) INDOOR UNIT
(1) Is operation of each button on the remote control unit normal?
(2) Does each lamp light normally?
(3) Do not air flow direction louvers operate normally?
(4) Is the drain normal?
(2) OUTDOOR UNIT
(1) Is there any abnormal noise and vibration during operation?
(2) Will noise, wind, or drain water from the unit disturb the neighbors?
(3) Is there any gas leakage?
(1) The power source capacity must be the sum of the room air conditioner current and the current
of other electrical appliances. When the current contracted capacity is insufficient, change the
contracted capacity.
(2) When the voltage is low and the air conditioner is difficult to start, contact the power company
the voltage raised.
CAUTION
CUSTOMER GUIDANCE
Explain the following to the customer in accordance with the operating manual:
(1) Starting and stopping method, operation switching, temperature adjustment, timer, air flow switching, and
other remote control unit operations.
(2) Air filter removal and cleaning, and how to use air louvers.
(3) Give the operating and installation manuals to the customer.
25
Installation of Indoor Unit
26
Trouble Shooting
Followings are not problems
Sound of water flowing is
not a problem.
Sound of cracking is heard.
Smell are generated.
During operation, white fog or steam
comes out from the indoor unit.
No outlet air or fan speed can't be changed
in dry mode.
In cooling operation, unit switches to
blowing operation.
Won't start?
In heating operation, water or steam are
blown out of outdoor unit.
In heating operation, indoor fan won't stop
even if unit is stopped.
During unit operation or at stop, a swishing or
gurgling noise may be heard. This noise is generated
by refrigerant flowing in the system.
Unit will not restart after stop.
During unit operation, a cracking noise may be heard.
This noise is generated by the casing expanding or
shrinking because of temperature changes.
This is because the system circulates smells from the
interior air such as the smell of cigarettes or the
painting on the furniture.
When unit is running at places like restaurant, etc. where
dense edible oil fumes always exist, this will happen.
To prevent frost from accumulating on indoor heat
exchanger, unit will switch to blowing operation for a
while then resume cooling operation.
Though ON/OFF button is set
to ON, unit won't resume cooling,
dry or heating operation
in 3 min after it is stopped, this
is because of 3-min-delay
protection circuit.
Please wait 3 minutes
Unit will reduce fan speed repeatedly and automatically
if room temp. is too low in dry operation.
This occurs when frost accumulated
on the outdoor unit is removed.
(during defrosting operation)
After unit stop, indoor fan will go on running
until indoor unit cools down.
27
Before ask for services, please first check your unit against the following.
Air conditioner won't start.
Poor cooling or heating
Is power supply switch
turned on?
Power supply switch
is not set at ON.
Is city power supply normal? Is leakage current breaker
activated?
This is very dangerous, please
disconnect power supply
immediately and contact your
dealer.
Are operation control
adjusted correctly
as specified?
Is air filter too dirty?
Are there any obstacles in inlet
or outlet grill?
Are horizontal louvers at up
position (in heating mode)?
Any doors or windows left
open?
Is there any direct sunlight
in the room?
If there are unexpected heat
sources in the room?
Too many people in the room?
Poor cooling
Is air conditioner in standby
condition in heating mode?
Cold air blows out
(in heating mode)
Trouble Shooting
Proper
temp
Power
failure?
Failure description
Room temp. sensor abnormal
Indoor coil temp. sensor abnormal
Outdoor coil temp. sensor abnormal
Over-current malfunction
Communication malfunction between indoor and wired controller
Communication malfunction between indoor and outdoor abnormal
Code on wired Flash times of indoor
controller receiver board
01 Power LED flashes 1 time
02 Power LED flashes 2 times
4A Power LED flashes 3 times
49 Power LED flashes 4 times
48 Power LED flashes 5 times
53 Power LED flashes 6 times
07 Power LED flashes 8 times
06 Power LED flashes 9 times
Outdoor temp. sensor abnormal
High / Low pressure abnormal
Temperature protection malfunction
0D Power LED flashes 13 times
If your unit still can't work properly after above mentioned checks, or following problems occur,
please stop it immediately and contact your dealer.
Fuses or circuit breakers often blow out.
Water comes out in cooling/dry operation.
Operation is abnormal or sound is heard.
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