SM0174
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
ROOM AIR CONDITIONER
INDOOR UNIT + OUTDOOR UNIT
MAY 2003
Refrigeration & Air-Conditioning Division
SERVICE MANUAL
REFER TO THE FOUNDATION MANUAL
TECHNICAL INFORMATION
FOR SERVICE PERSONNEL ONLY
(W)
(A)
(kW)
(B.T.U./h)
(W)
(A)
(kW)
(B.T.U./h)
W
H
D
(kg)
RAK-25NH4
RAC-25NH4
DC INVERTER (WALL TYPE)
TYPE
MODEL
POWER SOURCE
TOTAL INPUT
TOTAL AMPERES
CAPACITY
TOTAL INPUT
TOTAL AMPERES
CAPACITY
DIMENSIONS
(mm)
NET WEIGHT
SPECIFICATIONS
860
285
183
9.0
RAK-25NH4
RAK-35NH4
RAK-50NH4
CONTENTS
SPECIFICATIONS -------------------------------------------------------------------
5
CONSTRUCTION AND DIMENSIONAL DIAGRAM ---------------------
6
MAIN PARTS COMPONENT ---------------------------------------------------
8
WIRING DIAGRAM ----------------------------------------------------------------
10
CIRCUIT DIAGRAM ---------------------------------------------------------------
12
PRINTED WIRING BOARD LOCATION DIAGRAM --------------------- 18
BLOCK DIAGRAM -----------------------------------------------------------------
20
BASIC MODE -----------------------------------------------------------------------
22
REFRIGERATING CYCLE DIAGRAM ---------------------------------------
35
AUTO SWING FUNCTION ------------------------------------------------------
37
DESCRIPTION OF MAIN CIRCUIT OPERATION ----------------------- 38
SERVICE CALL Q & A ----------------------------------------------------------
69
TROUBLE SHOOTING -----------------------------------------------------------
72
PARTS LIST AND DIAGRAM -------------------------------------------------
92
RAK25NH4 RAC25NH4
RAK35NH4 RAC35NH4
RAK50NH4 RAC50NH4
RAC-25NH4
RAC-35NH4
RAC-50NH4
COOLING
HEATING
INDOOR UNIT
OUTDOOR UNIT
INDOOR UNIT
OUTDOOR UNIT
1 PHASE, 50 Hz, 220-230V
695 (155~1,050)
3.20-3.05
2.50 (0.90 ~ 3.00)
8,540
900 (115 ~ 1,400)
4.15-4.00
3.50 (0.90 ~ 5.00)
11,950
750
570
280
38
860
285
183
9.0
750
570
280
38
1 PHASE, 50 Hz, 220-230V
1,080 (155~1,280)
4.94-4.72
3.50 (0.90 ~ 4.00)
11,950
1,320 (115 ~ 1,920)
6.04-5.77
4.80 (0.90 ~ 6.60)
16,390
After installation
OUTDOOR UNIT
INDOOR UNIT
860
285
183
9.0
850
650
298
60
1 PHASE, 50 Hz, 220-230V
1,780 (155~2,200)
8.17-7.82
5.00 (0.90 ~ 5.20)
17,070
1,970 (115 ~ 2,100)
9.04-8.65
6.50 (0.90 ~ 8.10)
22,200
RAK-35NH4
RAC-35NH4
RAK-50NH4
RAC-50NH4
CONDENSED WATER DISPOSAL OF OUTDOOR UNIT
There are holes on the base of Outdoor unit for condensed
water to exhaust.
In order to flow condensed water to the drain, the unit is installed on
a stand or a block so that the unit is 100mm above the ground as
shown figure. Join the drain pipe to one hole.
At first insert one portion of the hook to the base (Portion A), then
pull the drain pipe in the direction shown by the arrow while inserting
the hook into the base. After installation, check whether the drain
pipe cling to the base firmly.
When Using and Installing In Cold Areas
When the air conditioner is used in low temperature and in snowy
conditions, water from the heat exchanger may freeze on the base
surface to cause poor drainage. When using the air conditioner in such
areas, do not install the bushings. Keep a minimum of 250mm between
the drain hole and the ground. When using the drain pipe, consult your
sales agent.
For more details, refer to the installation Manual for Cold Areas.
Maximum
pipe
length
20m
above 200mm
above 700mm
above 200mm
above 50mm when
installed on the
ceiling of balcony
(
)
above 100mm
above 100mm
give clearance as
wide as possible
SPLIT UNIT AIR CONDITIONER
INSTALLATION MANUAL
RAC-25NH4
Outdoor Unit
RAC-35NH4
RAC-50NH4
q
+ Screwdriver
q
Measuring Tape
q
Knife
q
Saw q ø 65mm Power Drill q Hexagonal Wrench
Key (
4mm) q Wrench (14, 17, 22, 26, 27mm)
q
Gas Leakage Detector
q
Pipe Cutter
q
Putty
q
Vinyl Tape
q
Pliers
q
Flare Tool
q
Carefully read through the procedures of proper
installation before starting installation work.
q
The sales agent should inform customers regarding
the correct operation of installation.
Tools Needed For Installation Work
SAFETY PRECAUTION
q
Read the safety precautions carefully before operating the unit.
q
The contents of this section are vital to ensure safety. Please pay special attention to the following sign.
WARNING ........ Incorrect methods of installation may cause death or serious injury.
CAUTION ......... Improper installation may result in serious consequence.
Be sure that the unit operates in proper condition after installation. Explain to customer the proper way of operating
the unit as described in the user's guide.
!
!
WARNING
!
CAUTION
!
q
A circuit breaker or fuse (16A time delay) must be installed. Without a circuit breaker or fuse the danger of electric shock exists.
A main switch with a contact gap of more than 3mm has to be installed in the power supply line to the outdoor unit.
q
Do not install the unit near a location where there is flammable gas. The outdoor unit may
catch fire if flammable gas leaks around it.
q
Please ensure smooth flow of water when installing the drain hose.
q
Piping shall be suitable supported with a maximum spacing of 1m between the supports.
q
Please request your sales agent or qualified technician to install your unit. Water leakage, short circuit or fire may occur if you
do the installation work yourself.
q
Please observe the instructions stated in the installation manual during the process of installation. Improper installation may
cause water leakage, electric shock and fire.
q
Make sure that the units are mounted at locations which are able to provide full support to the weight of the units. If not, the
units may collapse and impose danger.
q
Observe the rules and regulations of the electrical installation and the methods described in the installation manual when
dealing with the electrical work. Use power cables approved by the authorities of your country.
q
Be sure to use the specified wire for connecting the indoor and outdoor units. Please ensure that the connections are tight
after the conductors of the wire are inserted into the terminals. Improper insertion and loose contact may cause over-heating
and fire.
q
Please use the specified components for installation work. Otherwise, the units may collapse or water leakage, electric shock
and fire may occur.
q
Be sure to use the specified piping set for R-410A. Otherwise, this may result in broken copper pipes or faults.
q
When installing or removing an air conditioner, only specified refrigerant (R410A) shall be allowed, do not allow air or moisture
to remain in the refrigeration cycle. Otherwise, pressure in the refrigeration cycle may become abnormally high so that a rupture
may be caused.
q
Be sure to ventilate fully if a refrigerant gas leak while at work. If the refrigerant gas comes into contact with fire, a poisonous
gas may occur.
q
After completion of installation work, check to make sure that there is no refrigeration gas leakage. If the refrigerant gas leaks
into the room, coming into contact with fire in the fan-driven heater, space heater, etc., a poisonous gas may occur.
q
Unauthorized modifications to the air conditioner may be dangerous. If a breakdown occurs please call a qualified air conditioner
technician or electrician. Improper repairs may result in water leakage, electric shock and fire, etc.
FOR SERVICE PERSONNEL ONLY
THE CHOICE OF MOUNTING SITE (Please note the following matters and obtain permission from customer before installation).
WARNING
!
q The Outdoor unit must be mounted at a location which can support heavy weight. Otherwise, noise and vibration will increase.
CAUTION
!
q Do not expose the unit under direct sunshine or rain. Besides, ventilation must be good and clear of obstruction.
q The air blown out of the unit should not point directly to animals or plants.
q The clearances of the unit from top, left, right and front are specified in figure below. At least 3 of the above sides must be open air.
q Be sure that the hot air blown out of the unit and noise do not disturb the neighbourhood.
q Do not install at a location where there is flammable gas, steam, oil and smoke.
q The location must be convenient for water drainage.
q Place the Outdoor unit and its connecting cord at least 1m away from the antenna or signal line of television, radio or telephone. This is to
avoid noise interference.
OUTDOOR
UNIT
Dimension of Mounting Stand
of the Outdoor unit
(unit: mm)
q
The difference in height
between the indoor and
outdoor unit should be
kept max 5m.
q
The connecting pipe, no
matter big or small,
should all be insulated
with insulation pipe and
then wrapped with vinyl
tape. (The insulator will
deteriorate if it is not
wrapped with tape).
The connection of insulated
drain hose.
Please use insulated drain
hose for the indoor piping
(commercial product).
inner diameter ø 16mm
Names of Outdoor Components
!
Drain Pipe
1
57
12
35
124
500
320
10
20
(10)
340
mounting stand
Dimension of Mounting Stand
of the Outdoor unit
(unit: mm)
57
12
35
198
508
320
10
35
(10)
340
mounting stand
(RAC-25NH4,
RAC-35NH4)
(RAC-50NH4)
q
Please mount the Outdoor unit on stable ground to prevent
vibration and increase of noise level.
q
Decide the location for piping after sorting out the different types
of pipe available.
q
When removing side cover, please pull the handle after undoing
the hook by pulling it downward.
Please face this side (suction
side) of the unit to the wall.
Please remove side cover
when connecting the piping
and connecting cord.
Pull downward
BASE
DRAIN PIPE
A
DRAIN PIPE
BUSH
100
mm
ABOVE
11
10
BUSH
12
Figure showing the Installa-
tion of Outdoor Unit.
2
3
Bush
Qty
No.
Item
0
(RAC-25NH4,
RAC-35NH4)
(RAC-50NH4)
HFC
R410A
<I477: A >
#
Bush
1
Untitled-1
26/6/03, 12:00
1
CONDENSED WATER DISPOSAL OF OUTDOOR UNIT
There are holes on the base of Outdoor unit for condensed
water to exhaust.
In order to flow condensed water to the drain, the unit is installed on
a stand or a block so that the unit is 100mm above the ground as
shown figure. Join the drain pipe to one hole.
At first insert one portion of the hook to the base (Portion A), then
pull the drain pipe in the direction shown by the arrow while inserting
the hook into the base. After installation, check whether the drain
pipe cling to the base firmly.
When Using and Installing In Cold Areas
When the air conditioner is used in low temperature and in snowy
conditions, water from the heat exchanger may freeze on the base
surface to cause poor drainage. When using the air conditioner in such
areas, do not install the bushings. Keep a minimum of 250mm between
the drain hole and the ground. When using the drain pipe, consult your
sales agent.
For more details, refer to the installation Manual for Cold Areas.
Maximum
pipe
length
20m
above 200mm
above 700mm
above 200mm
above 50mm when
installed on the
ceiling of balcony
(
)
above 100mm
above 100mm
give clearance as
wide as possible
SPLIT UNIT AIR CONDITIONER
INSTALLATION MANUAL
RAC-25NH4
Outdoor Unit
RAC-35NH4
RAC-50NH4
q
+ Screwdriver
q
Measuring Tape
q
Knife
q
Saw q ø 65mm Power Drill q Hexagonal Wrench
Key (
4mm) q Wrench (14, 17, 22, 26, 27mm)
q
Gas Leakage Detector
q
Pipe Cutter
q
Putty
q
Vinyl Tape
q
Pliers
q
Flare Tool
q
Carefully read through the procedures of proper
installation before starting installation work.
q
The sales agent should inform customers regarding
the correct operation of installation.
Tools Needed For Installation Work
SAFETY PRECAUTION
q
Read the safety precautions carefully before operating the unit.
q
The contents of this section are vital to ensure safety. Please pay special attention to the following sign.
WARNING ........ Incorrect methods of installation may cause death or serious injury.
CAUTION ......... Improper installation may result in serious consequence.
Be sure that the unit operates in proper condition after installation. Explain to customer the proper way of operating
the unit as described in the user's guide.
!
!
WARNING
!
CAUTION
!
q
A circuit breaker or fuse (16A time delay) must be installed. Without a circuit breaker or fuse the danger of electric shock exists.
A main switch with a contact gap of more than 3mm has to be installed in the power supply line to the outdoor unit.
q
Do not install the unit near a location where there is flammable gas. The outdoor unit may
catch fire if flammable gas leaks around it.
q
Please ensure smooth flow of water when installing the drain hose.
q
Piping shall be suitable supported with a maximum spacing of 1m between the supports.
q
Please request your sales agent or qualified technician to install your unit. Water leakage, short circuit or fire may occur if you
do the installation work yourself.
q
Please observe the instructions stated in the installation manual during the process of installation. Improper installation may
cause water leakage, electric shock and fire.
q
Make sure that the units are mounted at locations which are able to provide full support to the weight of the units. If not, the
units may collapse and impose danger.
q
Observe the rules and regulations of the electrical installation and the methods described in the installation manual when
dealing with the electrical work. Use power cables approved by the authorities of your country.
q
Be sure to use the specified wire for connecting the indoor and outdoor units. Please ensure that the connections are tight
after the conductors of the wire are inserted into the terminals. Improper insertion and loose contact may cause over-heating
and fire.
q
Please use the specified components for installation work. Otherwise, the units may collapse or water leakage, electric shock
and fire may occur.
q
Be sure to use the specified piping set for R-410A. Otherwise, this may result in broken copper pipes or faults.
q
When installing or removing an air conditioner, only specified refrigerant (R410A) shall be allowed, do not allow air or moisture
to remain in the refrigeration cycle. Otherwise, pressure in the refrigeration cycle may become abnormally high so that a rupture
may be caused.
q
Be sure to ventilate fully if a refrigerant gas leak while at work. If the refrigerant gas comes into contact with fire, a poisonous
gas may occur.
q
After completion of installation work, check to make sure that there is no refrigeration gas leakage. If the refrigerant gas leaks
into the room, coming into contact with fire in the fan-driven heater, space heater, etc., a poisonous gas may occur.
q
Unauthorized modifications to the air conditioner may be dangerous. If a breakdown occurs please call a qualified air conditioner
technician or electrician. Improper repairs may result in water leakage, electric shock and fire, etc.
FOR SERVICE PERSONNEL ONLY
THE CHOICE OF MOUNTING SITE (Please note the following matters and obtain permission from customer before installation).
WARNING
!
q The Outdoor unit must be mounted at a location which can support heavy weight. Otherwise, noise and vibration will increase.
CAUTION
!
q Do not expose the unit under direct sunshine or rain. Besides, ventilation must be good and clear of obstruction.
q The air blown out of the unit should not point directly to animals or plants.
q The clearances of the unit from top, left, right and front are specified in figure below. At least 3 of the above sides must be open air.
q Be sure that the hot air blown out of the unit and noise do not disturb the neighbourhood.
q Do not install at a location where there is flammable gas, steam, oil and smoke.
q The location must be convenient for water drainage.
q Place the Outdoor unit and its connecting cord at least 1m away from the antenna or signal line of television, radio or telephone. This is to
avoid noise interference.
OUTDOOR
UNIT
Dimension of Mounting Stand
of the Outdoor unit
(unit: mm)
q
The difference in height
between the indoor and
outdoor unit should be
kept max 5m.
q
The connecting pipe, no
matter big or small,
should all be insulated
with insulation pipe and
then wrapped with vinyl
tape. (The insulator will
deteriorate if it is not
wrapped with tape).
The connection of insulated
drain hose.
Please use insulated drain
hose for the indoor piping
(commercial product).
inner diameter ø 16mm
Names of Outdoor Components
!
Drain Pipe
1
57
12
35
124
500
320
10
20
(10)
340
mounting stand
Dimension of Mounting Stand
of the Outdoor unit
(unit: mm)
57
12
35
198
508
320
10
35
(10)
340
mounting stand
(RAC-25NH4,
RAC-35NH4)
(RAC-50NH4)
q
Please mount the Outdoor unit on stable ground to prevent
vibration and increase of noise level.
q
Decide the location for piping after sorting out the different types
of pipe available.
q
When removing side cover, please pull the handle after undoing
the hook by pulling it downward.
Please face this side (suction
side) of the unit to the wall.
Please remove side cover
when connecting the piping
and connecting cord.
Pull downward
BASE
DRAIN PIPE
A
DRAIN PIPE
BUSH
100
mm
ABOVE
11
10
BUSH
12
Figure showing the Installa-
tion of Outdoor Unit.
2
3
Bush
Qty
No.
Item
0
(RAC-25NH4,
RAC-35NH4)
(RAC-50NH4)
HFC
R410A
<I477: A >
#
Bush
1
Untitled-1
26/6/03, 12:00
1
Removal Of Air From The Pipe And Gas Leakage Inspection
Gas Leakage Inspection
Please use gas leakage detector to check if
leakage occurs at the connection of Flare
nut as shown on the right.
If gas leakage occurs, further tighten the
connection to stop leakage. (Use the detector
provided for R410A)
3
Procedures of using Vacuum Pump for Air Removal
As shown in right figure, remove the cap
of valve core. Then, connect the charge
hose. Remove the cap of valve head.
Connect the vacuum pump adapter to
the vacuum pump and connect the
charge hose to the adapter.
Fully tighten the "Hi" shuttle of the
manifold valve and completely unscrew
the "Lo" shuttle. Run the vacuum pump
for about 1015 minutes, then completely
tighten the "Lo" shuttle and switch off
the vacuum pump.
2
Completely unscrew the spindle of the
service valve (at 2 places) in anti-
clockwise direction to allow the flow of
coolant (using Hexagonal Wrench key).
3
Remove the charge hose and tighten the
cap of valve head. Check the cap's
periphery if there is any gas leakage.
The task is then completed.
1
Preparation of Pipe
1
q
Use a pipe cutter to cut the copper pipe.
q
Jagged edge will cause leakage.
q
Point the side to be trimmed downwards during trimming to prevent copper
chips from entering the pipe.
q
Before flaring, please put on the flare nut.
Pipe Connection
2
CAUTION
!
Outer
dia.of pipe
6.35 (1/4")
9.52 (3/8")
12.7 (1/2")
6.35 (1/4")
9.52 (3/8")
12.7 (1/2")
Valve
head cap
Torque N·m
(kgf · cm)
13.7 18.6 (140 190)
34.3 44.1 (350 450)
44.1 53.9 (450 550)
19.6 24.5 (200 ~ 250)
19.6 24.5 (200 ~ 250)
29.4 34.3 (300 350)
12.3 15.7 (125 ~ 160)
Outer
Diameter (mm)
6.35
9.52
12.7
For R410A tool
0.0
~ 0.5mm
0.0
~ 0.5mm
0.0
~ 0.5mm
For R22 tool
A (mm)
Small dia. side
Large dia. side
Valve core cap
AIR
REMOV
AL
q
Recommend to use
R410A flaring tool.
Small dia. side
Large dia. side
CAUTION
!
In case of removing flare nut of an Indoor unit, first remove a nut
of small diameter side, or a seal cap of big diameter side will fly
out. Prevent water from entering into the piping when working.
When the meter reaches - 101KPa
(-76cmHg) during pumping, fully
tighten the shuttle.
Meter showing pressure
Closed
R410A
Manifold valve
Vacuum
pump
Valve
Charge hose
Valve
Vacuum pump
adapter
When pumping starts, slightly loosen the
flare nut to check of air sucked in. Then
tighten the flare nut.
Copper pipe
Trimming tool
A
Die
Die
Copper pipe
1.0mm
1.0mm
1.0mm
Wrench
Torque
wrench
Flare nut
Lo
Hi
The body of
service valve
Cap of
valve core
Hexagonal
Wrench Key
Cap of valve head
Cap of valve head
4
WARNING
q
If you cannot attach the side cover due to the connecting cord,
press the connecting cord in direction to the front panel to fix it.
q
Be sure that the hooks of the side cover is fixed in certainly.
Otherwise water leakage may occur and this causes short circuit
or faults.
q
The connecting cord should not touch to service valve and pipes.
(It becomes high temperature in heating operation.)
Checking for the electric source and the
voltage range
q
Before installation, the power source must be checked and necessary wiring work
must be completed. To make the wiring capacity proper, use the wire gauges list
below for the lead-in from a pole transformer and for the wiring from a switch board
of fuse box to the main switch and outdoor unit in consideration of the locked rotor
current.
q
Investigate the power supply capacity and
other electrical conditions at the installation
location.
Depending on the model of room air
conditioner to be installed, request the
customer to make arrangements for the
necessary electrical work etc.
The electrical work includes the wiring work
up the outdoor. In localities where electrical
conditions are poor, use of a voltage
regulation is recommended.
q
THIS APPLIANCE MUST BE EARTHED.
Procedures of Wiring
Wiring of The Outdoor Unit
q
Please remove the side cover for wire connection.
!
WARNING
!
In case that power is supplied from Outdoor Unit
Earth terminal
N CD
Power supply shall be connected at the rated voltage, otherwise the unit will be
broken or could not reach the specified capacity.
D
C
N
L
D
C
Indoor Unit
Outdoor Unit
Connecting Cord
Connecting Cord
AC 220 - 230V
1.6 or
2.0
2.0
L
q
The naked part of the wire core should be 10 mm and fix it to the terminal
tightly. Then try to pull the individual wire to check if the contact is tight. Improper
insertion may burn the terminal.
q
Be sure to use only power cables approved from the authorities in your country.
For example in Germany: Cable type: NYM 3x1.5mm2.
q
Please refer to the installation manual for wire connection to the terminals of the
units. The cabling must meet the standards of electrical installation.
q
There is a AC voltage of 230V between the L and N terminals. Therefore,
before servicing, be sure to remove the plug from the AC outlet or switch off
the main switch.
WARNING
!
Outdoor
Unit
GRN + YEL
Strip wires
25mm
25mm
10mm
10mm
10mm
35mm
Cable length
up to 16m
up to 15m
up to 25m
Wire cross-section
1.5mm2
2.5mm2
4.0mm2
IMPORTANT
FINAL
ST
AGE
OF
INST
ALLA
TION
Insulation And Maintenance Of Pipe Connection
1
q
The connected terminals should be completely sealed with heat insulator and
then tied up with rubber strap.
q
Please tie the pipe and power line together with vinyl tape as shown in the figure
showing the installation of Indoor and Outdoor units. Then fix their position with
holders.
q
To enchance the heat insulation and to prevent water condensation, please
cover the outdoor part of the drain hose and pipe with insulation pipe.
q
Completely seal any gap with putty.
Power Source And Operation Test
2
Power Source
CAUTION
!
q
Please use a new socket. Accident may occur due to the use of old socket
because of poor contact.
q
Please plug in and then remove the plug for 2 3 times. This is to ensure that
the plug is completely plugged into the socket.
q
Keep additional length for the power cord and do not render the plug under
external force as this may cause poor contact.
q
Do not fix the power cord with U-shape nail.
Sleeve of
protection pipe
Putty
Putty
Insulation material for pipe connection
<I477: A >
Operation Test
q
Please ensure that the air conditioner is in normal operating condition during
the operation test.
q
Explain to your customer the proper operation procedures as described in the
user's manual.
Power line
Control line
Use 16A Time
Delay Fuse
INST
ALLA
TION
OF
REFRIGERA
TING
PIPES
AND
AIR
REMOV
AL
CONNECTION
OF
POWER
CORD
Untitled-1
26/6/03, 12:00
2
above 50mm
above 100mm
above
0.45m
above
300mm
must
not
bend
above 100mm
2
7
4
5
3
9
Maximum
pipe
length
20m
Plug
2,300mm or more
1
SPLIT UNIT AIR CONDITIONER
INSTALLATION MANUAL
Indoor Unit
q
+ Screwdriver
q
Measuring Tape
q
Knife
q
Saw q ø 65mm Power Drill q Hexagonal Wrench
Key (
4mm) q Wrench (14, 17, 22, 26, 27mm)
q
Gas Leakage Detector
q
Pipe Cutter
q
Putty
q
Vinyl Tape
q
Pliers
q
Flare Tool
q
Carefully read through the procedures of proper
installation before starting installation work.
q
The sales agent should inform customers regarding
the correct operation of installation.
Tools Needed For Installation Work
SAFETY PRECAUTION
q
Read the safety precautions carefully before operating the unit.
q
The contents of this section are vital to ensure safety. Please pay special attention to the following sign.
WARNING ........ Incorrect methods of installation may cause death or serious injury.
CAUTION ......... Improper installation may result in serious consequence.
Be sure that the unit operates in proper condition after installation. Explain to customer the proper way of operating
the unit as described in the user's guide.
!
!
WARNING
!
CAUTION
!
q
A circuit breaker or fuse (16A time delay) must be installed. Without a circuit breaker or fuse the danger of electric shock exists.
A main switch with a contact gap of more than 3mm has to be installed in the power supply line to the outdoor unit.
q
Do not install the unit near a location where there is flammable gas. The outdoor unit may
catch fire if flammable gas leaks around it.
q
Please ensure smooth flow of water when installing the drain hose.
q
Piping shall be suitable supported with a maximum spacing of 1m between the supports.
q
Please request your sales agent or qualified technician to install your unit. Water leakage, short circuit or fire may occur if you
do the installation work yourself.
q
Please observe the instructions stated in the installation manual during the process of installation. Improper installation may
cause water leakage, electric shock and fire.
q
Make sure that the units are mounted at locations which are able to provide full support to the weight of the units. If not, the
units may collapse and impose danger.
q
Observe the rules and regulations of the electrical installation and the methods described in the installation manual when
dealing with the electrical work. Use power cables approved by the authorities of your country.
q
Be sure to use the specified wire for connecting the indoor and outdoor units. Please ensure that the connections are tight
after the conductors of the wire are inserted into the terminals. Improper insertion and loose contact may cause over-heating
and fire.
q
Please use the specified components for installation work. Otherwise, the units may collapse or water leakage, electric shock
and fire may occur.
q
Be sure to use the specified piping set for R-410A. Otherwise, this may result in broken copper pipes or faults.
q
When installing or removing an air conditioner, only specified refrigerant (R410A) shall be allowed, do not allow air or moisture
to remain in the refrigeration cycle. Otherwise, pressure in the refrigeration cycle may become abnormally high so that a rupture
may be caused.
q
Be sure to ventilate fully if a refrigerant gas leak while at work. If the refrigerant gas comes into contact with fire, a poisonous
gas may occur.
q
After completion of installation work, check to make sure that there is no refrigeration gas leakage. If the refrigerant gas leaks
into the room, coming into contact with fire in the fan-driven heater, space heater, etc., a poisonous gas may occur.
q
Unauthorized modifications to the air conditioner may be dangerous. If a breakdown occurs please call a qualified air conditioner
technician or electrician. Improper repairs may result in water leakage, electric shock and fire, etc.
FOR SERVICE PERSONNEL ONLY
THE CHOICE OF MOUNTING SITE (Please note the following matters and obtain permission from customer before installation).
WARNING
!
q
The unit should be mounted at stable, non-vibratory location which can provide full support to the unit.
CAUTION
!
q
No nearby heat source and no obstruction near the air outlet is allowed.
q
The clearance distances from top, right and left are specified in figure below.
q
The location must be convenient for water drainage and pipe connection with the Outdoor unit.
q
To avoid interference from noise please place the unit and its remote controller at least 1m from the radio, television and inverter
type fluorescent lamp.
q
To avoid any error in signal transmission from the remote controller, please put the controller far away from high-frequency
machines and high-power wireless systems.
q
The installation height of indoor unit must be 2.3m or more in a non public area.
INDOOR
UNIT
Names of Indoor Components
Hanger
Qty
No.
Item
The Length of Indoor Unit
Connecting Cord
Figure showing the Installation of Indoor Unit.
1
1
Screw for holder of
Remote Controller
(3.1x16)
AAA Size Battery
Holder for Remote
Controller
(4.1x32)
Remote Controller
Purifying Filter
2
6
3
1
4
2
5
2
6
7
8
1
9
1
Insulation pipe
1
Screw for Hanger
0.9m
1.6m
Installation of Hanger, Wall Penetration and Installation of Protection Pipe
1
CAUTION
!
q
The draining of the water container inside the indoor unit can be done from the left.
Therefore the hanger must be fixed horizontally or slightly tilted towards the side of
drain hose. Otherwise, condensed water may overflow the water container.
Direct Mounting On The Wall
q
Please use hidden beams in the wall to hold the hanger.
Wall Penetration and Installation of Protection Pipe
q
Drill a ø 65mm hole on
wall which is slightly tilted
towards the outdoor side.
Drill the wall at a small
angle.
q
Cut the protection pipe
according to the wall
thickness.
q
Empty gap in the sleeve
of protection pipe should
be completely sealed
with
putty
to
avoid
dripping of rain water into
the room.
Procedures of Installation and Precautions
q
Procedures to fix the hanger.
1. Drill holes on wall.
2. Push plug into the holes.
3. Fix the hanger on wall
(As shown below)
(As shown below)
with 4.1 x 32 screw
(As shown in figure below)
q
Procedures to fix the holder of remote control.
1. Drill holes on wall.
2. Push plug into the holes.
(As shown below)
(As shown below)
Installation of the Indoor Unit
2
VERTICALLY DOWNWARD PIPING
Preparation
q
Connect connecting cord.
q
Pull out the pipe, connecting cord and drain hose.
Installation
q
The upper part of the Indoor unit is hanged on the hanger.
q
The projection at the lower part of the Indoor unit is hooked onto the hanger.
Please pull the lower part of
the Indoor unit outwards to
check if the unit is hooked
onto the hanger. Improper
installation
may
cause
vibration and noise.
!
CAUTION
HORIZONTAL PIPING
Preparation
Change of Drain Hose and Installation Procedures.
q
Exchange the location of drain hose and drain cap during horizontal piping as shown in
figure below. Be sure to plug in the drain hose until the insulating material folds upon itself.
q
Please use pliers to pull out the drain cap.
(This is an easier way to remove the drain cap).
INSTALLATION OF REFRIGERATING PIPES AFTER CONNECTION
q
The refrigerating pipes should be adjusted to fit into
the hole on the wall and then ready for further
connection.
q
The terminals of 2 connected pipes must be covered
with insulator used for terminal connection. Then the
pipes are wrapped with insulation pipe.
q
Connect the connecting cord after removing electrical
cover. (Refer to "CONNECTION OF POWER CORD")
q
After adjustment, fit the connecting cord and pipes
into the space available under the indoor unit. Use
holder to hold them tight.
!
CAUTION
q
The rubber strap used for
fixing the insulator should
not be tied with great force.
Otherwise, this will damage
heat insulation and causes
water condensation.
q
Holder can be attached at the either of 2 places.
Please select the easier position.
THE CONNECTION OF REFRIGERATING PIPE DURING THE
INSTALLATION OF INDOOR UNIT
Preparation To Install Refrigerating Pipes
!
CAUTION
q
Please fix in the plastic core
after flaring to avoid plastic
chips entering the pipes.
CAUTION
!
You are free to choose the side (left or right) for the installation of drain
hose. Please ensure the smooth flow of condensed water of the Indoor
unit during installation. (Carelessness may result in water leakage.)
!
CAUTION
Be sure that the
drain hose is not
loosely connected
or bend.
Be sure that the wire is not
in contact with any metal
in the wall. Please use the
protection pipe as wire
passing through the hollow
part of the wall so as to
prevent the possibility of
damaged by mouse.
Unless it seals completely,
any air with high humidity
flows from outdoor and
any dew may drop.
!
WARNING
q
The refrigerating pipes and connecting cord
transform and are attached.
q
The end of the refrigerating pipes are at locations
marked with "
" symbol.
Installation of Drain Hose
3
Installation
Hang the Indoor unit onto the hanger. Use the temporary stand
at the back of the Indoor unit to push its lower part 15cm
forwards.
q
Place the drain hose through the hole on the wall.
q
Wrap the refrigerating pipes with insulation pipe after
connecting refrigerating pipe.
q
Connect the connecting cord after removing electrical cover.
(Refer to "Connection of Power Cord")
q
After adjustment, the connecting cord and refrigerating pipes
are placed into the space available under the Indoor unit.
q
The projection of Indoor unit must hook to the hanger.
INDOOR
UNIT
<I477: A >
External dimension of
indoor unit
160mm
160mm
80mm
860mm
40mm
45mm
30mm
Drain Hose
45mm
298mm
Level
Line
Hole for
pipe
Mark
Weight
Screw for Hanger
Please use more
than 4 screws.
Hanger
32mm
20mm
ø
4.8mm
ø
4.4mm
Wall
1 Hanger
2 Screw
Plug
Wall
above 50mm
Ceiling
4.1 x 32 Screw
Wall
Remote
Control
Holder
5 Screw
Plug
3
HOW TO REMOVE INDOOR UNIT FROM HANGER
q
Pull down PULL section on the bottom of indoor
unit and pull it towards you, then claws are
released from hanger. (Indicated by 2 arrows in
the drawing on the right.)
q
When bottom face of indoor unit cannot be
pulled due to obstacles, etc. Remove front cover,
insert screw driver into circle hole, pull claws
down and pull indoor unit towards you.
q
Please check how to remove and attach front
cover in this instruction manual.
Sleeve of
protection
pipe
WALL
Protection
pipe
Seal with
putty
Seal with
putty
2 ~ 5mm
Outdoor
Indoor
Connecting cords,
pipe and drain hose
must be tied together
with Vinyl tape.
Hanger
Hook
Refrigerating
Pipe
Connecting
Cord
Drain Hose
Protection
Pipe
Lift the body
of the unit
upwards and
then force
it downwards.
Hanger
Projection
Screw driver
Claw of indoor unit
Circle hole
2
1
!
CAUTION
Condensed water may leak out if not inserted properly.
HORIZONTAL & DOWNWARD PIPING MAKING OPENINGS
q
During horizontal or downward piping, use a knife to cut
openings as shown in figure. Then smoothen the edges of
openings with a file.
q
Turn the piping while holding down the lower
portion of pipe-support by hand.
Drain hose
Drain cap
Drain cap
Please insert
until here
Drain hose
Please insert
until here
Pipe
support
Pull up the pipe after
bending downward
Openings
Pipe
Connecting cord
Drain hose
Insulation pipe (must be wrapped with
vinyl tape at every 120mm).
Holder 9
Insulation pipe 6
Pipe
Rubber strap tied with great force
below
5mm
Please bend at a small
radius to form an arc
about 15cm
Projection
Temporary stand
Connected
section
Holder
Connecting cord
Drain hose
Protection
pipe
Heat insulation pipe
Connecting
cord
Refrigerating pipe
Pull this to the front
during the connection
of refrigerating pipes
to ease task.
Bending
upwards
Condensed
water pond
Ditch
Condensed
water pond
Holder
1
RAK-25NH4
RAK-35NH4
RAK-50NH4
!
CAUTION
· The installation height of indoor
unit must be 2.3m or more in
a non public area.
Direction of Piping
There are 4 directions allowed, namely,
horizontally perpendicular to the unit,
vertically down from right, horizontally out
from right and horizontally out to left.
Don't form the piping downward at the
left of the unit.
Connection
Horizontally
perpendicular
to the unit
Be sure to
completely
seal any
gap with
putty.
The connection of insulated drain hose.
Please use insulated drain hose for the
indoor piping (commercial product).
inner diameter ø 16mm
q
The difference in height between the indoor and outdoor
unit should be kept max 5m.
q
The connecting pipe, no matter big or small, should all
be insulated with insulation pipe and then wrapped with
vinyl tape. (The insulator will deteriorate if it is not wrapped
with tape).
The indoor piping should be
insulated with the enclosed
insulation
pipe.
(If
the
insulator is insufficient,
please
use
commersial
products).
HFC
R410A
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