OPERATION
MANUAL
CONVERTIBLE TYPE AIR CONDITIONER
AC142ACBHA
AU142AFBHA
(HCFU-14HA03/R1(B))
AC182ACBHA
AU182AFBHA
(HCFU-18HA03/R1(B))
No. 0010571427
A
CONTENTS
CAUTIONS
..........................................................................
SAFETY PRECAUTIONS
.....................................................
FEATURES AND FUNCTIONS
............................................
NAME OF PARTS
...................................................................
CLEANING AND CARE
................................................
TROUBLE SHOOTING
..................................................
OPERATIONG TIPS
.............................................................
INATALLATION TOOLS--------------------------------------INSTALLATION PROCEDURES---------------------------
1-2
3
4
5
6
7-8
9
10
11-22
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.
CAUTIONS
2
D
L
K1
When installation in under ceiling, dial
switch "K1" in the PC board to "D"
position. When installation in floor
console, dial switch to "L" position (Brand
new unit is in "D" position).For series
14,18.
For this model, the all-pole discon-rexion
connection method should be applied in
the power supply.
Such means for disconnection must be
incorporation in the fixed wiring.
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.
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.
Specifications
The refrigerating circuit is leak-proof.
3
SAFETY PRECAUTIONS
WARNING!
If the power supply cord of this air conditioner is damaged, it must be replaced by
the manufacturer its authorized service personnel only.
Use copper wire only. All the cables shall have got the European authentication certificate.
the power supply connects from the outdoor side.
The power cable and connecting cable are self-provided.
The parameter of connecting cable:
H05RN-F 4G 0.75mm2.
The requirement of the corss section area of the power supply cord:
H07RN-F 3G 2.5mm2.
DANGER!
CAUTION!
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.
In the event of a malfunction (burning smell, etc.), stop operation immediately, turn off the circuit breaker,
and consult authorized service personnel.
Provide occasional ventilation during use.
Do not direct air flow at fireplaces or heating apparatuses.
Do not climb on 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.
4
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.
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.
NAME OF PARTS
Fig.1 Indoor Unit
1
4
6
7
3
Fig.2
POWER
OPER
TIMER
COMP
EMER
2
5
Fig.2 Outdoor Unit
12
Intake grill
13
Outlet grill
14
Pipe Unit
13
12
14
Fig.2
1 Operating Control Panel (Fig.2)
2 Emergency switch
3 Remote Control Signal Receiver
4 Power Indicator Lamp (Red)
5 OPERATION Indicator Lamp (Green)
6 TIMER Indicator Lamp (Yellow)
7 Compressor Run Lamp (Green)
8 Intake Grill (Fig.3)
9 Air Filter
10
UP/DOWN Air Direction Flaps
11
RIGHT/LEFT Air Direction Louvers
(behind UP/DOWN Air Direction Flaps)
3
9
8
Fig.1
1110
5
6
CLEANING AND CARE
CAUTION!
Before cleaning the air conditioner ,be sure to turn it off and disconnect
the Power Supply Cord.
Be sure the Intake Grill is installed securely.
When removing and replacing the air filters, be sure not to touch the heat
exchanger, as personal injury may result.
Cleaning the Air Filter
Open the Intake Grill
1. Pull out both sides and the center of the
Intake Grill.
2. Pull the Air Filters upward to remove
them.
3. Clean the Air Filters.
5. Push in both sides and the center of the
Intake Grill.
4. Re-attach the Air Filters to the Intake Grill.
Push the Air Filter handles away from the
Intake Grille in direction as illustrated, then
pull out Air Filters.
Remove the dust from the Air Filters by
vacuum cleaner or washing them. After
washing, allow the Air Filters to dry
thoroughly in an area protected from sunlight.
1
2
3
The Filters fit onto the inside of the intake
Grill. (figure 1)
The bottom edges of the Air Filters should
fit into the filter brackets. (figure 1)
The Air Filters should be pushed down so
that their top edges fit under the projections
at the top of the Intake Grill. (figure 2)
Dust can be cleaned from the Air Filter
either with a vacuum cleaner, or by washing
the filter in a solution of mild detergent and
warm water. If you wash the filter, be sure
to allow it to dry thoroughly in a shady
place before reinstalling.
If dirt is allowed to accumulate on the Air
Filter, air flow will be reduced, lowering
operating efficiency and increasing noise.
During periods of normal use, the Air
Filters should be cleaned every two weeks.
(Figure 1)
Filter bracket
Air Filter
(Figure 2)
Handle
Air Filter
Bracket
Base
About 30 mm
Arm
Intake Grill
Arm
Notch
Hook
Side Panel
7
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.
8
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)
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.
Power
failure?
Proper
temp
TROUBLE SHOOTING
9
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 15 minutes).
During Automatic Defrosting operation, the
OPERATION Indicator Lamp will flash.
Temperature and Humidity Range
Cooling
Heating
indoor
outdoor
indoor
outdoor
max C D.B/W.B
min C D.B/W.B
max C D.B/W.B
min C D.B
max C D.B
min C D.B
max C D.B/W.B
min C D.B/W.B
32/23
18/14
43/26
18
27/20/-
24/18
-7/-8
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 air-circulation 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.
OPERATING TIPS
Installation tools
10
Mark Parts name
Adhesive tape
Saddle (L.S) with screws
Connecting electric cable
for indoor and outdoor
Drain hose
Heat insulation material
Piping hole cover
Putty
Plastic clamp
Optional parts
A
B
C
D
E
F
G
H
STANDARD PARTS
The following installation parts are furnished. Use them as required.
ACCESSORIES
Name and shape
Q'ty
Application
6
For fixing the wall
bracket.
Tapping screw
( 4x20)
Coupler heat insulator(large)
1
For indoor side pipe
joint (Large pipe)
Coupler heat insulator(small)
1
For indoor side pipe
joint (Small pipe)
Nylon fastener
1
For fixing the drain
hose
Drain hose
Non-adhesive tape
1
1
VT wire
1
For fixing the drain
hose L 280mm
Remote
controller
Battery
1
2
Use for air conditioner
operation
For remote controller
unit
Name and shape
Q'ty
Application
1
Cover plate (left)
Cover plate (right)
Installation
template
Anchor bolt
Spring washer
Special nut
Pipe hole cover
Wall hole cover
Main pipes
Connecting cables
1
2
1
4
4
4
1
1
1
1
For positioning the
indoor unit
For under ceiling type.
For suspending the
indoor unit from ceiling
4
Tapping screw
( 4x10)
Cushion
Drain-e bow
1
Only for the heat pump
type
Wall bracket
2
Installation Procedures
11
Under ceiling
9.52mm dia
15.88mm dia.
Outdoor unit
Indoor unit
2 cm
or more
Ceiling
Indoor unit
30 cm
or more
Left
Right
1.5m
Floor console
30 cm
or more
30 cm
or more
1.5m
1.5m
Left
Right
may be difference
SELECTING THE MOUNTING POSITION
(1)Do not install where there is the danger of com bustible gas leakage.
(2) Do not install near heat sources.
(3) 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 and outdoor units and install positively so that
the units will not topple or fall.
WARNING
CAUTION
Decide the mounting position with the customer as follows:
1. INDOOR UNIT
(1) Install the indoor unit level on a strong wall, floor,
ceiling which is not subject to vibration.
(2) The inlet and outlet ports should not be obstructed:
the air should be able to blow all over the room.
(3) Install the unit near an electric outlet or special
branch circuit.
(4) Do not install the unit where it will be exposed to
direct sunlight.
(5) Install the unit where connection to the outdoor
unit is easy.
(6) Install the unit where the drain pipe can be easily
installed.
(7) Take servicing, etc. into consideration and leave the
spaces shown in Fig.A. Also install the unit where
the filter can be removed.
Fig.A
Installation procedures
12
30 cm
or more
60 cm
or more
40 cm or more
30 cm
or more
60 cm
or more
2. OUTDOOR UNIT
(1) If possible, do not install the unit where it will be
exposed to direct sunlight.(If necessary, install a
blind that does not interfere with the air flow.)
(2) Install the outdoor unit in a place where it will be
free from being dirty or getting wet by rain as much
as possible.
(3) Install the unit where connection to the indoor unit
is easy.
(4) During heating operation, drain water flows from the
outdoor unit. Therefore, install the outdoor unit in a
place where the drain water flow will not be obstructed.
(Reverse cycle model only)
(5) Do not place animals and plants in the path of the
warm air.
(6) Take the weight of the air conditioner into account
and select a place where noise and vibration are small.
(7) Select a place where the warm air and noise from
the air conditioner do not disturb neighbors.
(8) Provide the space shown in Fig.B so that the air flow
is not blocked. Also for efficient operation, leave open
three of the four directions front, rear, and both sides.
(1) Install the unit where it will not be tilted by more
than 5 .
(2) When installing the outdoor unit where it
may be exposed to the strong wind, fasten
it securely.
WARNING
Fig.B
Installation procedures
13
Open the intake grill and remove the three or four or six screws.(Fig. 1)
Remark:
The main unit can be wired before the indoor
unit is installed. Select the most appropriate
installation order.
A. FLOOR CONSOLE TYPE
1. DRILLING FOR PIPING
Select piping and drain directions.(Fig.2)
The piping and drain can be made in three
directions as shown below.
(Fig.2)
rear
right
down
1. REMOVE THE INTAKE GRILL
PREPARING INDOOR UNIT INSTALLATION
When installing set to wall, install the accessory wall
bracket at the position shown in Fig.5,and mount the
set to it.
Fig. 1
Machine screw
Tapping screw
Tapping screw
Intake grill
(Fig. 5)
Wall bracket
Side of set
65.5cm
99cm
50cm
24.5cm
6.5cm
12.5cm 10cm
6.5cm
53cm
4.5cm
7cm hole
3.5cm hole
The drain hose can be connected to either the
left or right side.(Fig.3)
(Fig. 3)
Drain hose (Left side) Drain hose (Right side)
Wall
7cm
6mm
Indoor unit outdoor unit
(Fig.4)
When the directions are selected, drill a 7 cm dia.
hole on the wall so that the hole is tilted downward
toward the outdoor for smooth water flow. When
the pipe is led out from the rear, make a hole in
Fig.4, at the position shown.
Installation procedures
14
Select whether the drain hose will be connected
to the left or right side.(Fig.3) Insert the drain
hose into the drain pan, then secure the drain
hose with a nylon fastener. (Fig.6)
2. INSTALLING DRAIN HOSE
(Fig. 6)
Wrap the insulation (drain hose) around the drain
hose connection. (Fig.7)
(Fig. 7)
CAUTION
Do not install the unit drain hose side is too high. Height A should be less than 5 mm.(Fig.9)
Fig. 8
Be sure to arrange the drain hose correctly so that it is leveled lower than the drain hose connecting port
of the indoor unit.
Drain pan
Drain hose
Nylon fastener
Drain pan
Drain hose
Insulation
(Drain hose)
OK NO NO
Arrange the drain hose
lower than this portion.
Drain hose
Fig. 9
A A
Drain hose
B. UNDER CEILING TYPE
Using the installation template, drill holes for
piping and anchor bolts(for holes).(Fig.10)
Installation
template
Wall
Ceilling
Drilling position
for piping
Drilling position
for anchor bolt
200mm
900mm
Fig. 10
Fig. 15
3. INSTALLING BRACKETS
Install the brackets with nuts, washers and spring
washers.(Fig. 15)
Spring washer
Special nut
Bracket
4. INSTALLING INDOOR UNIT
Bracket (Right)
Bracket (Left)
Installation procedures
15
Select piping and drain directions.
(Fig.11)
1. DRILLING FOR PIPING
Fig. 14
Fig. 13
Insert the anchor bolts into the drilled holes, and drive
the pins completely into the anchor bolts with a hammer.
(Fig. 14)
2. DRILLING HOLES FOR ANCHOR BOLTS AND
INST ALLING THE ANCHOR BOLTS
When the directions are selected, drill 80mm and
50mm or 150mm dia. hole on the wall so that the
hole is tilted downward toward the outdoor for
smooth water flow.
With a concrete drill, drill four 12.7 mm dia. Holes.
(Fig.13)
Wall
6mm
Install the drain hose at the rear; it should not
be installed on the top or right side.
Fig. 11
Rear (Install the drain
hose in the direction.)
Right
CAUTION
60 to 70mm
12.7mm
Fig. 12
Now, securely tighten the hex bolts in both sides.
Fig. 17
Reset the hex bolts as shown in Fig.16.
Hex bolt
8 to 13mm
Indoor unit
Fig. 16
Apply the indoor unit to the brackets.(Fig.17)
Bolt
Bracket
Indoor unit
Installation procedures
16
Select whether the drain hose will be connected to
the left or right side.(Fig.3)
Insert the drain hose into the drain pan, then secure
the drain hose with a nylon fastener.(Fig.6)
Wrap the insulation (drain hose)around the drain
hose connection.(Fig.7)
Be sure to arrange the drain hose correctly so that
it is leveled lower than the drain hose connecting
port of the indoor unit.(Fig.18)
5. INSTALL THE DRAIN HOSE
Fig. 19
Fig. 18
NO
OK
Remove the hole cover.
Arrange the drain hose
lower than this portion
Drain hose
Piping hole
Base (Bottom)
Intake grill
VT wire hole
Pass the drain hose through here
Cut the grill
VT wire
Drain hose
CONNECTING THE PIPING
OUTDOOR UNIT INSTALLATION
1. FLARE PROCESSING
(1) Cut the connection pipe with pipe cutters so
that the pipe is not deformed.
(2) Holding the pipe downward so that cuttings
cannot enter the pipe, remove the burrs.
(3) Remove the flare nut from the indoor unit pipe
and outdoor unit and assemble as shown in
(Table1) and insert the flare nut onto the pipe,
and flare with a flaring tool.
(4) Check if the flared part "L" (Fig.20)is spread
uniformly and that there are no cracks.
Table 1
Pipe Flare nut
Small pipe
Large pipe
Small (width across flats 22mm)
Large (width across flats 24mm)
2. BENDING PIPES
Fig. 21
The pipes are shaped by your hands. Be careful
not to collapse them.
Fig. 20
L
Liquid pipe
1.6 to 1.8mm(6.35mm dia)
Gas pipe
2.2 to 2.4mm(15.88mm dia)
Gas pipe
3.4 to 2.6mm(19.05mm)
Liquid pipe
1.8 to 2.0mm(9.52mm)
Width across flats
L dimension
OK
NO
Extend the pipe by unwinding it
Installation procedures
Place where air circulates.
Place free from heat radiation from other heat sources.
Place where drain water may be discharged.
Place where noise and hot air may not disturb the neighbors.
Place where there is not heavy snowfall in winter.
Place where obstacles do not exist near the inlet air port and outlet air port.
Place where the outlet port may not be exposed to a strong wind.
Place surrounded at four sides are not suitable for installation. A 1m or more
of overhead space is needed for the unit.
Mount guide-louvers to place where short-circuit is a possibllity.
When installing several units, secure sufficient suction space to avoid short circuiting.
2. Installation of outdoor unit
Note (1)
Place the concrete foundation
deep enough.
Note (1)
Give enough room for the concrete
foundation to fix anchor bolts.
Install the unit so that the angle of inclination must be less than 3 degrees.
1.Selection of hte place of installation
Select the place of installation satisfying the following conditions and, at the same time,
obtain consent from the client or user.
Fix the unit in a proper way according to the condition of a place where it is installed by
referring to the following.
Fig. 22
17
(3) Limitations for one way piping length and
vertical height difference.
(2) Piping size
Install the removed flare nuts to the pipes to
be connected, then flare the pipes.
90
0.5
3. Refrigerant piping
(1) Outline of piping
Gas pipe
15.88x1.0mm
9.52x0.8mm
Liquid pipe
Outdoor
unit
3-way valve
Flare connection
Gas pipe
Liquid
pipe
Flare connection
Indoor
unit
3-way valve
One way piping length: Less than 15 mm
Vertical height difference: Less than 5 m
Precautions for refrigerant piping
(Fig. 23)
Do not twist or crush piping.
Be sure that no dust is mixed in piping.
Bend piping with as wide angle as possible.
Keep insulating both gas and liquid piping.
Check flare-connected area for gas leakage.
(b) Foundation anchor
(a) Concrete foundation(Fig. 22)
Anchor bolt
Concrete foundation
Unit
Unit
Concrete foundation
Anchor bolt
Connecting method
Apply refrigerant oil at half union as large and flare nut.
To bend a pipe, give the roundness as possible not to
crush the pipe.
When connecting pipe, hold the pipe centre to centre
then screw nut on by hand, refer to Fig.
Be careful not to let foreign matters, such as sands
enter the pipe.
(4) Piping connection (Fig.23)
Forced fastening without
centering may damage
the threads and cause a
gas leakage.
Pipe dia
Fastening
torque
Gas pipe 15.88mm
Liquid pipe 9.52mm
60N.m
42N.m
Installation procedures
18
If it does not stop gas leakage, discharge
whole refrigerants from the serice port
After flaring work again and vacuumize,
fill up prescribed refrigerant from the gas
cylinder
Detach the charge hose from the service port, open
3-way valve and 3-way
Turn the valve rod
anticlockwise until hitting lightly
6
In case of gas leakage, tighten
parts of pipe connection If
leakage stops, then proceed
steps
No gas leakage?
5
4
Open the valve rod for the 3-way valve to and angle of
anticlockwise 90 degree
After 6 seconds later
, close the 3-way valve and male
the inspection of gas leakage
3
V acuumize for over 15min And check the level gauge
which should read -0 1 MPa (-76 cm Hg) at low
pressure side
After the completion of vacuumizing,
close the handle 'Lo' in gaugemanifold and stop the
operation of the vacuum pump
Check the condition of the scale and hold it for 1-2min
If the scale-moves back in spite of tightening, make
flaring work again, the return to the beginning of 3
2
Open the handle at low in gaugemanifold, operate
vacuum pump If the scale-moves of gause (low)
reach vacuum condition in a moment, check 1 again
1
Detach the service port's cap of 3-way valve, the
valve rod's cap for 3-way valve and 3-way's, connect
the service port into the projection of char
ge hose
(low) for gaugemanifold Then connect the projection
of charge hose (center) for gaugemanifold into
vacuum pump
To use vacuum pump
3
Close
CAUTION:
If the refrigerant of the air conditioner leaks, it is necessary to make
all the refrigerant out, then charge the liquid refrigerant into air
conditioner according to the amount marked on the name plate
7
8
After attaching the each caps, check the gas leakage
around the caps
To prevent the gas leakage, turn the service port's
cap, the valve rod'd cap for 3-way valve and 3-way's
a lottle more than the point where the torque increases
suddenly
2
Open
For these models , the refrigerant is R407C.
After connecting the piping, check the joints for gas leakage with gas leakage detector.
CAUTION
6
Liquid pipe
Gas pipe
Gaugemanifold
Vacuum pump
3-way valve
3-way valve
9 52mm(3/8'')
15 88mm(5/8'')
Service port
90
90
3-way valve
3-way valve
AIR PURGING METHOD (TO USE VACUUM PUMP)
7
7
Valve rod cap
Service port cap
7
3-way valve
3-way valve
Valve rod cap
6
6
3-way valve
3-way valve
90
for 6 sec.
4
Installation procedures
19
HOW TO CONNECT WIRING TO THE TERMINALS
A. For solid core wiring (or F-cable)(Fig.24A)
(1) Cut the wire with a wire cutter or wire-cutting pliers, then strip the insulation to about 25mm of the
exposed 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(Fig.24B)
(1) Cut the wire with a wire cutter or wire-cutting pliers, then strip the insulation to about 10mm of the
exposed strand wiring.
(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 screw driver.
Fig. 24
Insulation
Strip 25mm
Loop
A. Solid wire
Terminal
board
Screw with
special washer
Round
terminal
Wire
Screw with
special washer
Round
terminal
Wire
Strip 10mm
Round
terminal
B. Strand wire
After passing the connection cord and power cable through the insulation tube, fasten it with the cord
clamp, as shown in Fig.25
HOW TO FIXED CONNECTION CORD AND POWER CABLE AT
THE CORD CLAMP
Fig. 25
Insulation tube
Cord clamp
Use VW-1, 0.5 to 1.0 mm thick, PVC tube as the insulation tube.
Installation procedures
20
ELECTRICAL REQUIREMENT
Electric wire size and fuse capacity:
Table 5
Connection
cord
(mm2)
Fuse capacity(A)
MAX
MIN
3.5 3.5
2.5
2.5
20 30
ELECTRICAL WIRING
1. INDOOR UNIT SIDE
(1) Remove the electric component box.
Fig. 26
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.
Electric component box
Fig. 27
Electric component box
Remove the four tapping
screws.
CAUTION
Do not remove the screws. If the screws
are removed, the electric component
box will fall.
(2) Pull out the electric component box.
Fig.28
(3) Remove the electric component box cover.
Fig. 29
Base
Electric component box cover
Remove the three tapping screws.
(1) Remove the cord clamp.
(2) Process the end of the connection cords to the
dimensions shown in Fig.34.
(3) Connect the end of the connection cord fully into the
terminal block.
(4) Wiring
Fig. 30
Indoor unit
termianl block
Outdoor unit
termianl block
(4) Fasten the connection cord with a cord clamp.
(5) Fasten the end of the connection cord with the
screw.
Electric component box
CAUTION
Be careful not to pinch the lead wires
between the electric component box
and base.
1 2 3
1 2 3
L N
to power supply
Installation procedures
21
ELECTRICAL WIRING
(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 dif ficult to start, contact the power company the voltage
raised.
CAUTION
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?
CUSTOMER GUIDANCE
Explain the following to the customer in accordance
with the operating manual:
(2) Air filter removal and cleaning, and how to use
air louvers.
(3) Give the operating and installation manuals to
the customer.
(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.
WARNING
(1) Starting and stopping method, operation switching,
temperature adjustment, timer, air flow switching,
and other remote control unit operations.
MOUNT THE COVER PLATE AND
THE INTAKE GRILL
1.Mount the cover plate. (Right)
(1) Cut a pipe exit hole in the right plate. This is
only when the pipe exits from the right side.
(This operation is not required when the
protrusion is on the top or rear.)
Fig. 31
Cover plate (Right)
(2) Join the cover plates (right) and mount with screws.
Fig. 32
(1) Join the cover plate (left) and mount with screws.
Fig. 33
2. Mount the cover plate.(Left)
Installation procedures
22
(2) Insert the hinges on the bottom of the intake grill into the holes in the base assembly. Then
mount the arms to the three areas on the top of the intake grill.
Fig. 35
Fig. 34
(1) Cut the right side of the intake grill. This is only when the pipe exits from the right side
3. Mount the intake grill.
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