Hitachi RAS-S50YHAB User manual

The Choice of Mounting Site (Please note the following matters and obtain permission from customer before installation).
WARNING
!
●The unit should be mounted at stable, non-vibratory location which can
provide full support to the unit.
CAUTION
!
●No nearby heat source and no obstruction near the air outlet is allowed.
●The clearance distances from top, right and left are specified in figure
below.
●The location must be convenient for water drainage and pipe connection
with the Outdoor unit.
●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.
●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.
●The installation height of indoor unit must be 2.3m or more.
INDOOR UNIT
Installation of Mounting Plate, Wall Penetration and Installation of Protection Pipe
1
CAUTION
!
●The draining of the water container inside the indoor unit can be done from the left.
Therefore the mounting plate 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
●Please use hidden beams in the wall to hold the mounting plate.
Wall Penetration and Installation of Protection Pipe
●Drill a ø 65mm hole on
wall which is slightly tilted
towards the outdoor side.
Drill the wall at a small
angle.
●Cut the protection pipe
according to the wall
thickness.
●Empty gap in the sleeve
of protection pipe should
be completely sealed with
putty to avoid dripping of
rain water into the room.
Installation of the Indoor Unit
2
VERTICALLY DOWNWARD PIPING
Preparation
●Connect connecting cord.
●Pull out the pipe, connecting cord and drain hose.
Installation
●The upper part of the Indoor unit is hanged on the mounting plate.
●The projection at the lower part of the Indoor unit is hooked onto the mounting plate.
Please pull the lower part of
the Indoor unit outwards to
check if the unit is hooked onto
the mounting plate. Improper
installation may cause vibration
and noise.
!
CAUTION
INSTALLATION OF REFRIGERATING PIPES AFTER CONNECTION
● The refrigerating pipes should be adjusted to fit into the hole on the
wall and then ready for further connection.
● The terminals of 2 connected pipes must be covered with insulator used
for terminal connection. Then the pipes are wrapped with insulation pipe.
● Connect the connecting cord after removing electrical cover. (Refer to
“CONNECTION OF POWER CORD”)
● After adjustment, fit the connecting cord and pipes into the space
available under the indoor unit.
● When connection is at left side, refrigerating pipe and cabinet shall be
tied together.
Failing to do so may cause the unit bottom side become warping.
Excess binder shall be cut to prevent abnormal sound and water dripping.
!
CAUTION
● 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.
THE CONNECTION OF REFRIGERATING PIPE DURING THE
INSTALLATION OF INDOOR UNIT
Preparation To Install Refrigerating Pipes
!
CAUTION
●Please fix in the plastic core
after flaring to avoid copper
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
●Refer to below diagram for the connecting refrigerating
pipes and cord arrangement.
●The end of the refrigerating pipes are at locations
marked with “ ” symbol.
Installation of Drain Hose
3
Installation
Hang the Indoor unit onto the mounting plate. Use the temporary stand
at the back of the Indoor unit to push its lower part 15cm forwards.
●Place the drain hose through the hole on the wall.
●Wrap the refrigerating pipes with insulation pipe after connecting
refrigerating pipe.
●Connect the connecting cord after removing electrical cover. (Refer
to “Connection of Power Cord”)
●After adjustment, the connecting cord and refrigerating pipes are
placed into the space available under the Indoor unit.
●The projection of Indoor unit must hook to the mounting plate.
INDOOR UNIT
Heat insulation pipe
Connecting
cord
Refrigerating pipe
Pull this to the front
during the connection
of refrigerating pipes
to ease task.
HOW TO REMOVE INDOOR UNIT
● Push up the (PUSH) sections at the bottom of the indoor
unit and pull the bottom plate towards you. Then the claws
are released from the stationary plate.
(The (PUSH) sections are indicated by 2 arrows in the
right figure)
Procedures of Installation and Precautions
●Procedures to fix the mounting plate.
1.Drill holes on wall. 2. Push plug into the holes. 3. Fix the mounting plate on
(As shown below) (As shown below) wall with 4.1 x 32 screw
(As shown in figure below)
●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)
Level
Mounting
plate
Hole for pipe
Line
Weight
Mark
Screw for Mounting Plate
Please use more than
4 screws.
Plug
Screw
Remote
Control
Holder
20mm
ø4.4mm ø4.8mm
Wall
Wall
32mm Wall
Mounting plate
Screw Plug
4.1 x 32 Screw
above 50mm
Ceiling
1
2
3
5
Indoor Outdoor
WALL
Sleeve of
protection pipe
Protection
pipe
Seal with
putty
Seal with
putty
2 ~ 5mm
Connecting cords, pipe and
drain hose must be laid
together with Vinyl tape.
Mounting plate
Drain Hose
Protection
Pipe
Refrigerating
Pipe
Connecting
Cord
Lift the body
of the unit
upwards and
then force it
downwards.
Mounting plate
Projection
[Push] mark positions
Drain cap Drain hose
Drain hose
Connecting cord
Pipe
Insulation pipe (must be wrapped
with vinyl tape at every 120mm).
Pipe Rubber strap tied with
great force
Please bend at a small
radius to form an arc
below
5mm
Projection
Hook
about 15cm
Protection pipe
Drain hose
Connecting cord
Holder Connected
section
Bending
upwards
Condensed
water pond
Ditch Condensed
water pond
Figure showing the Installation of Indoor and Outdoor Unit.
●This unit is chargeless up 30m pipe length.
●Installation of pipe length less than minimum pipe length requirement
(3 meters) may generate an abnormal sound.
CAUTION
Drain cap
HORIZONTAL PIPING
Preparation
Change of Drain Hose and Installation Procedures.
● 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.
●Please use pliers to pull
out the drain cap.
(This is an easier way to
remove the drain cap).
CAUTION
Condensed water
may leak out if not
inserted properly.
●Remove the cap for
drain hose installation
Drain cap shall
be fully tightened
by pushing with
Hexagonal wrench
key when changing
location.
CAUTION
For horizontally out to right piping
GOOD
For right piping, follow the instruction as below:
●
Press the upper side of clamp
●
Unfold the pipe to downward slowly.
●
Bend the pipe to the right side of chassis.
BAD
Following bending from left to right directly
could cause damage to pipe.
Drain hose
Drain hose
Please insert
until here
CAUTION
● Do not guide the drain hose to places where corrosive gases (sulfur, ammonia,
etc.) are generated, such as septic tanks and sewer.
Corrosive gas may flow backward from the drain hose to the indoor unit, corrode
the copper pipe, or it may cause offensive odors in the room.
● Cut the drain hose at a position 100 mm higher than the floor surface. It may
cause water leakage due to air lock or clogging of foreign matter.
Above
100mm
Hook portion for binder tightening
Binder
Binder
Insulator
Drain Hose
Hook Hook
Refrigerating
Pipe
!
BURST HAZARD
Do not allow air, etc. to get into refrigerant
cycle (piping)
RISK OF EXPLOSION
Compressor must be stopped before
removing refrigerant pipes.
All service valve must be fully closed after
pumping down operation.
WARNING
WARNING
CAUTION
CAUTION
CAUTION
This symbol shows that this equipment uses a flammable refrigerant.
If the refrigerant is leaked, together with an external ignition source,
there is a possibility of ignition.
This symbol shows that the Operation Instructions should be read
carefully.
This symbol shows that a service personnel should be handling
this equipment with reference to the Installation Manual.
This symbol shows that there is information included in the Operation
Manual and/or Installation Manual.
●The difference in height
between the indoor and
outdoor unit should be
kept max 20m.
●The connecting pipe,
no matter big or small,
should all be insulated
with insulation pipe and
then wrapped with plastic
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).
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the
insulator is insufficient,
please use commercial
products).
Be sure to
completely
seal any
gap with
putty.
Direction of Piping
There are 6 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.
Screw for Mounting
Plate
(4.1 x 32)
Names of Indoor Components
Screw for holder of
Remote Controller
(3.1x16)
AAA Size Battery
Holder for Remote
Controller
Mounting Plate
QtyNo. Component’s Name
1
6
1
2
2
Remote Controller
Purifying Filter
1
2
3
4
5
6
7
1
2
Dimension of Mounting Stand
of the outdoor unit
(unit : mm)
1
Bush
Names of Outdoor Components
QtyNo. Item
1
Drain Pipe
Bush
3
8
9
10
Flare connection only at
outside of building
WARNING
!
●Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer.
Any unfit method or using incompatible material may cause product damage, burst and serious injury.
●The appliance/pipe-work shall be stored in a well ventilated room with indoor floor area larger than Amin [refer to Table 1]
and without any continuously operating ignition source. Keep away from open flames, any operating gas appliances or
any operating electric heater. Else, it may explode and cause injury or death.
●The appliance/pipe-work shall be installed, and/or operated in a room with floor area larger than Amin [refer to Table 1] and
keep away from ignition sources, such as heat/spark/open flame or hazardous areas such as gas appliances, gas cooking,
reticulated gas supply systems or electric cooking appliances, etc.
●Do not pierce or burn as the appliance/pipe-work is pressurized. Do not expose the appliance/pipe-work to heat, flame,
sparks, or other sources of ignition. Else, it may explode and cause injury or death.
WARNING
!
Table 1: Minimum Floor area of the room A
min
(m
2
)
Minimum Floor area of the room
A
min
(m
2
)
RAS-S**YHAB
Max refrigerant
charge amount
(g)
Max Piping
Length
(m)
Outdoor
Model
RAC-S50YHAB
RAC-S60YHAB
30
30
1500
1500
2.15
2.15
!
!
!
Tools Needed For Installation Work
●Carefully read through the procedures of
proper installation before starting installation
work.
●The sales agent should inform customers
regarding the correct operation of installation.
(mark is tool exclusive use for R32)
●+ – Screwdriver ●Measuring Tape
●Knife ●Saw ●Pipe Cutter
●Hexagonal Wrench Key ( 4mm)
●Power Drill (ø 65mm ~ ø 80mm)
Vacuum Pump ●Pliers or Wrench
●Torque Wrench Vacuum Pump Adaptor
●Flare Tool ●Gas Leakage Detector
Manifold Valve Charge Hose
●Reamer ●File
< IA1837: C >
SAFETY PRECAUTION
●Read the safety precautions carefully before operating the unit.
●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.
!
!
Refrigerant pipe size (outer diameter): Narrow pipe, Liquid (ø6.35mm); Wide pipe, Gas (ø12.70mm)



●Flare nut must use a torque wrench without fail. Tighten with the specified tightening torque. If
the flare nut is tightened too much, after a long period of time, the flare nut breaks, Gas leakage,
stagnation, touching fire, rarely cause ignition.
●Sharp bending of the pipe use the polyethylene rod, bend not crushed the pipe. Gas leakage from
the crushed part, stagnation, touching fire, rarely cause ignition.
●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.
●Please observe the instructions stated in the installation manual during the process of installation.
Improper installation may cause water leakage, electric shock and fire.
●A brazed, welded, or mechanical connection shall be made before opening the valves to permit
refrigerant to flow between the refrigerating system parts. A vacuum valve shall be provided to
evacuate the interconnecting pipe and/or any uncharged refrigerating system part.
●Mechanical connectors used indoors shall comply with ISO 14903. When mechanical connectors
are reused indoors, sealing parts shall be renewed. When flared joints are reused indoors, the
flare part shall be re-fabricated.
●Refrigerant tubing shall be protected or enclosed to avoid damage.
●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.
●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.
●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.
●Please use the specified components for installation work. Otherwise, the units may collapse or
water leakage, electric shock and fire may occur.
●Be sure to use the specified piping set for R32. Otherwise, this may result in broken copper pipes
or faults.
●When installing or removing an air conditioner, only specified refrigerant (R32) 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.
●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. Be aware that refrigerants may not contain an odour.
●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.
●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.
●A circuit breaker or fuse must be installed. Without a circuit breaker or fuse the danger of electric
shock exists.
The external switch shall be incorporated to completely disconnect from power supply. It should
disconnect all poles, and a contact separation of at least 3mm must be present.
●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.
●Do not install the indoor unit in a machine shop or kitchen where vapor from oil or its mist flows
to the indoor unit. The oil will deposit on the heat exchanger, thereby reducing the indoor unit
performance and may deform and in the worst case, break the plastic parts of the indoor unit.
●Please ensure smooth flow of water when installing the drain hose.
●Piping shall be suitable supported with a maximum spacing of 1m between the supports.
CAUTION
!
WARNING
!
INSTALLATION
MANUAL
SPLIT UNIT AIR CONDITIONER
INDOOR UNIT
RAS-S50YHAB
RAS-S60YHAB
OUTDOOR UNIT
RAC-S50YHAB
RAC-S60YHAB
EN INSTRUCTION MANUAL
FOR SERVICE
PERSONNEL ONLY
<IA1837: C >

OUTDOOR UNIT
●Please mount the Outdoor unit on stable ground to prevent vibration
and increase of noise level.
●Decide the location for piping after sorting out the different types of
pipe available.
●When removing side cover, please pull the handle after undoing the
hook by pulling it downward.
Preparation of Pipe
1
●Use a pipe cutter to cut the
copper pipe.
●Jagged edge will cause leakage.
●Point the side to be trimmed downwards during trimming to prevent copper
chips from entering the pipe.
●Before flaring, please put on the flare nut.
Pipe Connection
2
INSTALLATION OF REFRIGERATING PIPES AND AIR REMOVAL
CAUTION
!
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
●Recommend to use
R32 flaring tool.
CAUTION
!
●When removing flare nut from the Indoor unit, please ensure to
use proper tooling.
●Prevent pipe from coming in contact with water or working in
wet area.
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.
A
DRAIN PIPE
100 mm ABOVE
BUSH BUSH
DRAIN PIPE
Trimming tool
Copper pipe
Die
Die
Copper pipe
Flare nut
Torque
wrench
Wrench
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. (Be
sure to use R32 detector)
3
AIR REMOVAL
When the meter reaches - 101KPa
(-76cmHg) during pumping, fully
tighten the shuttle.
Closed
R32
Valve
Charge hose
Vacuum pump
adapter
When pumping starts, slightly loosen the
flare nut to check of air sucked in. Then
tighten the flare nut.
o Hi
Vacuum
pump
Manifold valve
Meter showing pressure
Valve
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” knob of the manifold
valve and completely unscrew the “Lo” knob.
Run the vacuum pump for about 10~15
minutes, then completely tighten the “Lo” knob
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 refrigerant (using
Hexagonal Wrench key).
Re-cap the service valve and tighten using
wrench. Check the cap’s periphery if there is
any gas leakage. The task is then completed.
Remove the charge hose and tighten the cap
of valve core. Check the cap’s periphery if
there is any gas leakage.
4
5
1
3
Cap of valve head
Cap of valve head
The body of
service valve
Hexagonal
Wrench Key
Cap of valve
core
Outer
Diameter
mm (inch)
6.35 (1/4")
9.52 (3/8")
12.70 (1/2")
15.88 (5/8")
1.0 ~ 1.5
1.0 ~ 1.5
1.0 ~ 1.5
1.0 ~ 1.5
Clutch type
A (mm)
1.5 ~ 2.0
1.5 ~ 2.0
1.5 ~ 2.5
1.5 ~ 2.5
Wing nut type
Thickness
(mm)
0.8
0.8
0.8
1.0
0.0 ~0.5
0.0 ~0.5
0.0 ~0.5
0.0 ~0.5
Flare tool for R32
Clutch type
Conventional flare tool
●Prevent moisture from entering pipe connection.
●Refrigerating machine oil not be applied to the
outside of the flare.
When refrigerating machine oil is applied to the
outside of the flare, excessive tightening of the
flare nut, cracking of the flare nut, destruction of
the flare and gas leakage may occur.
●When using the control valve, do not use
deteriorated packing. And, do not overtighten the
steering wheel.
Gas leakage from the service valve part, stagnation,
touching fire, rarely cause ignition.
CAUTION
CONNECTION OF POWER CORD
Procedures of Wiring
Indoor Unit Outdoor Unit
Detail of Cutting the Connecting Cord
Connecting cord
Outdoor Unit
Indoor Unit
Power line
Green + Yellow
(ground)
Green +
Yellow
(ground)
Connecting cord Connecting cord
Strip wires
Strip wires
Green + Yellow
●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.
●Be sure to use only wire specified for the use of air-conditioner.
●Please refer to the manual for wire connection and the wiring technique should
meet the standard of the electrical installation.
●There is an AC voltage drop between the LN terminal if the power is on.
Therefore, be sure to remove the plug from its socket.
WARNING
!
Wiring Of The Indoor Unit
●For wire connection of the indoor unit, you need to remove the front cover,
the low cover under the body of the unit and terminal cover.
●Remove the cover from the terminal base and screw the cable.
Cord band
Earth
After remove the
screw and terminal
cover, and put the
connecting cords and
fix the terminal cover
with screw.
Connecting cord
Method to remove electrical cover
●Remove the screw and electrical cover.
●Insert the connecting cord (1, 2, 3) from the back of unit.
●Fixed the wire to terminal wires firmly as shown as below.
WARNING
!
●Leave some space in the connecting
cord for maintenance purpose and be
sure to secure it with the cord band.
●Secure the connecting cord along the
coated part of the wire using the cord
band. Do not exert pressure on the wire
as this may cause overheating or fire.
Wiring of The Outdoor Unit
●Please remove the side plate for wire connection.
WARNING
!
●If you cannot attach the side plate due to the connection cord, please press the connecting
cord in the direction to the front panel to fix it.
●Be sure that the hooks of the side plate is fixed in certainly. Otherwise water leakage may
occur and this causes short circuit or faults.
●The connecting cord should not touch to service valve and pipes. (It becomes high
temperature in heating operation.)
●Before installation, the power source must be checked and necessary wiring work must be completed. To
make the wiring capacity proper, use the wire gauge list below for the wiring from house distribution fuse
box to the outdoor unit in consideration of the locked rotor current.
●Investigate the power supply capacity and other electrical conditions at
the installing 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 unit . In
localities where electrical conditions are poor, use of a voltage regulation
is recommended.
●Install outdoor for the room air conditioner within the reaching range of
the line cord. Earth
terminal
!
WARNING ●THIS APPLIANCE MUST BE EARTHED.
Power cord
Electrical cover
Connecting cord
Screw
Checking for the electric source and the voltage range
Cover
FINAL STAGE OF INSTALLATION
How to remove the Front Cover
1 Remove the front panel.
●Pull up the front panel
by holding it at both lower
sides with both hands.
●When the front panel full
open, pull the inner part of
the right arm outward and
pull the panel forward while
closing it gradually.
2 Remove the pre-filters.
●Push upward to release the claws and pull out the Pre-
filter.
3 After removing two caps and two screws, rotate the
horizontal louver towards you a bit. Then, pull the center
of the front cover to release the claws.
4 Pull the side faces (lower sections) of the front cover
towards you as shown in the figure and remove the cover.
How to attach the Front Cover
1 Check to ensure that the drain pan is securely attached.
2 To install the front cover onto the unit, push two points
from the center to lock the two claws in the direction as
shown in the image below. Then, hook the four claws at
upper side of the front cover securely.
3 Tighten the two screws, then attach the two caps.
4 Install the pre-filters.
5 Slide the shafts on the left then on the right arms of the
front panel along the step on the front cover. Please insert
the shafts into the holes untill they stop. After checking
the shafts are securely inserted, close the front panel.
Claw
View A
View A
Hole
Shaft
Front panel
Pre-filter
Horizontal louver
Cap
Screw
Claw
After insertion
Before insertion
Claws
Screw
Cap
Front cover
How to connect the optional parts
(Dry contact, H-Link/Wi Fi (optional), Wired remote, Run status)
●For cable connection to control P.W.B., you need to remove front
cover and electrical box cover.
Each connecting location is as below.
1Dry contact: CN6
2H-LINK/Wi Fi: CN7
3Wired Remote Controller: CN20
4 Run status: CN25
●Please check and confirm manuals attached to each optional parts
for more connection details.
●You can refer to this installation manual how to remove and re-attach
the front cover.
●Please be careful not to damage lead wires by edge of plate when
connecting the optional parts.
Outdoor supply cords shall not be lighter
than polychloroprene sheathed flexible
cord with code designation 60245 IEC 57.
CAUTION
Insulation And Maintenance Of Pipe Connection
1
●The connected terminals should be completely sealed with
heat insulator and then tied up with rubber strap.
●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.
●To enchance the heat insulation and to prevent water
condensation, please cover the outdoor part of the drain hose
and pipe with insulation pipe.
●Completely seal any gap with putty.
Installation Of Remote Controller
2
●The remote controller can be placed in its holder which is
fixed on wall or beam.
●To operate the remote controller at its holder, please ensure
that the unit can receive signal transmitted from the controller
at the place where the holder is to be fixed. The unit will beep
when signal is received from the remote controller. The signal
transmission is weaken by the fluorescent light. Therefore,
during the installation of the remote control holder, please
switch on the light, even during day time, to determine the
mounting location of the holder.
Power Source And Operation Test
3
Power Source
CAUTION
●Please use a new socket. Accident may occur due to the
use of old socket because of poor contact.
●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.
●Keep additional length for the power cord and do not
render the plug under external force as this may cause
poor contact.
●Do not fix the power cord with U-shape nail.
Operation Test
●Please ensure that the air conditioner is in normal operating
condition during the operation test.
●Explain to your customer the proper operation procedures
as described in the user’s manual.
The remote controller
must be slide in
the remote controller
holder, in the direction
as shown in the
figure, until it hooks
at the lower end of
the remote controller
holder.
Screw (2 pieces)
Remote
Controller
Holder
Remote
Controller
Outer
diameter
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 core 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)
Small dia. side
Large dia. side
Valve
head cap
Small dia. side
Large dia. side
!
!
<IA1837: C >
IMPORTANT
Circuit Breaker
20A
Wire length
up to 30 m
Wire cross-section
1.5mm2
For (Connecting cord - 1, 2, 3, Earth)
Wire cross-section
2.5 mm2
For (Power cord - L, N, Earth)