Hitachi airHome 800 RAC-XJ25WHAE Installation Manual

WARNING
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 installation stated in the installation manual during the process of
installation. Improper installation may cause water leakage, electric shock and fire.
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 cables which are approved official
in your country. Be sure to use the specified circuit. A short circuit and fire may occur due to the
use of low quality wire or improper work.
800
Be sure to use the specified cables 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 to
prevent the external force is being applied to the connection section of the terminal base.
Improper insertion and loose contact may cause over-heating and fire.
Please use the specified components for installation work. Otherwise, the unit may collapse or
water leakage, electric shock, fire or stronger vibration may occur.
Be sure to use the specified piping set for R32. Otherwise, this may result in broken copper
pipes or faults.
RAC-XJ25WHAE
RAC-XJ35WHAE When installing or transferring an air conditioner to another location, make sure that air other
RAC-XJ50WHAE than the specified refrigerant (R32) does not enter the refrigeration cycle. If other air should
enter, the pressure level of the refrigeration cycle may increase abnormally which could
1
result in a rupture and injury.
Never install a drier to this R32 unit in order to guarantee its lifetime.
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.
After completion of installation work, check to make sure that there is no refrigeration gas
Carefully read through the 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.
procedures of proper installation
Unauthorized modifications to the air conditioner may be dangerous. If a breakdown occurs
before starting installation work.
please call a qualified air conditioner technician or electrician. Improper repairs may result in
The sales agent should inform
water leakage, electric shock and fire, etc.
customers regarding the correct
operation of installation.
R410A R32)
EE0018833R rev. 0- 0/2023 1
WARNING
Be sure to connect the earth line from the power supply wire to the outdoor unit and between the outdoor and indoor unit.
Do not connect the earth line to the gas tube, water pipe, lighting rod or the earth line of the telephone unit. Improper
earthing may cause electric shocks.
When installing the unit, be sure to install the refrigerant pipe before starting the compressor.
If the refrigerant pipe is not installed and the compressor is operated with the service valve released, air is sucked and the pressure level
of the refrigeration cycle may increase abnormally which could result in a rupture and injury.
The electric cables should neither be reworked nor added. Make sure to use an exclusive circuit breaker.
Otherwise fire or electric shock might occur by connection failure, isolation failure or over current.
Make sure to connect cables to terminal properly and terminal cover should close firmly.
Otherwise, over heating at terminal contact, fire or electric shock might occur.
Make sure that there is no dust on any connected points of electric cables and fix firmly.
Otherwise, fire or electric shock might occur.
SAFETY PRECAUTION
This appliance is filled with R32.
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.
Make sure to connect earth line.
This sign in the figures indicates prohibition.
Be sure that the unit operates in proper condition after installation. Explain to customer the proper operation and maintenance of the unit
as described in the user' s guide. Ask a customer to keep this installation manual together with the instruction manual.
Please mount the Outdoor unit of 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. Reinstall the side cover in the
re verse order of the removal.
Please face this side (suction
Please face this side(suction
side) of the unit to the wall.
side) of the unit to the wall. Please remove side cover
when connecting the piping
and connecting cord.
Pull downward
RAC-XJ25/35WHAE
Do not touch the suction port, bottom surface,or aluminum fin of the outdoor unit.Failure to do so
CAUTION
may cause an injury.
CONDENSED WATER DISPOSAL OF OUTDOOR UNIT
There is 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.
After installation, check whether the drain pipe clings to the base firmly.
BASE
above
100mm
DRAIN HOLE
2 BUSH
RAC-XJ25/35WHAE Outer diameter:
DRAIN PIPE
1
16 mm or more
Install the outdoor unit horizontally and make sure that condensate drains away.
In case of using in chilly area pecially, in case that there are many snows by very cold in chilly area, condensed water freezes
on the base and may result not to drain. In this case, please remove the bush and the drain pipe at the bottom of unit.(Left and
center near discharge portion of air, each 1 place).It becomes smooth drain.Ensure that the distance from the drain hole to
the ground is 250 mm or more.
CAUTION
A circuit breaker must be installed in the house distribution box for the direct
connected power supply cables to the outdoor unit. In case of other
installations a main switch with a contact gap or more than 3mm has to be
installed. Without a circuit breaker, the danger of electric shock exists.
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.
Please ensure smooth flow of water when installing the drain hose. Improper
installing may wet your furniture.
An IEC approved power cord should be used. Power cord type: NYM.
THE CHOICE OF MOUNTING SITE
(Please note the following matters and obtain permission from customer before installation.)
WARNING
The Outdoor unit must be mounted at a location which can support heavy weight.
Otherwise, noise and vibration will increase.
When finishing the refrigerant collection (pumping down), stop the compressor
and then remove the coolant pipe. If you remove the refrigerant pipe while the
compressor is operating and the service valve is released, air is sucked and
a pressure in the freezing cycle system will build up steeply, causing an
explosion or injury.
CAUTION
Selecting the installation location: Suitable location that will reduce the impact
from rain and direct sun that may affect the unit performance.
Besides,ventilation must be good and clear of obstruction .
The air blown out of the unit should not point directly to animals or
The clearances of the unit from top, left, right and front are specified in figure
below . At least three of the above sides must be open air .
Be sure that the hot air blown out of the unit and noise do not disturb the
neighbourhood.
Do not install at a location where there is flammable gas,steam, oil and smoke.
The location must be convenient for water drainage.
Place the Outdoor unit and its connecting cord at least 1 m away from the antenna
or signal line of television, radio or telephone. This is to avoid noise interference.
Figure showing the Installation of Outdoor Unit.
Names of Outdoor Components
Dimension of Mounting
No.
Stand of the Outdoor unit
RAC-XJ25/35WHAE
Mounting Stand
57
12
39
500
146
792
877
Mounting Stand
RAC-XJ50WHAE
543.5
800
880.5
(unit : mm)
RAC-XJ25/35WHAE RAC-XJ50WHAE
A above 100mm above 300mm
B above 300mm above 700mm
give clearance as wide as possible
The clearances of the above 200mm
unit from top, left, right
and front are specified
in figure below. At least
three of the above sides
must be open air.
B
RAC-XJ25/35WHAE
above 200mm
Please remove side cover
when connecting the piping
and connecting cord.
A
B
RAC-XJ50WHAE
Drain hose
RAC-XJ50WHAE
Drains the dehumidified water from the indoor unit to the
outdoor during "cooling" or "dehumidifying" operation.
Piping and Wiring
Air inlets (Rear and left sides)
Air outlet
When" heating"operation is performed,
cool air blows and when "cooling" or
"dehumidifying" operation is performed,
warm air blows.
BASE
About the outdoor unit:
above
When "Stop" is selected during operation
100mm
of the indoor unit, the fan of the outdoor
RAC-XJ50WHAE unit continues turning for 10 to 60
DRAIN HOLE
seconds to cool the electric parts down.
In heating operation, condensate or
Outer diameter
1 DRAIN PIPE
16 mm or more water due to defrosting will flow.
Do not cover the drain port of the outdoor
unit because such water may freeze in
the chilly area.
When the outdoor unit is hung on the
ceiling, install the bush and drain pipe
on the drain port and drain water.
1 Preparation of Pipe
Use a pipe cutter to cut the copper pipe and remove burr.
Trimming tool
Copper pipe
Before flaring, please put on the flare nut.
Die Die
A Please use
exclusive tool for
refrigerant R410 ,
R32.
Copper pipe
2 Pipe Connection
In case of removing flare nut of a indoor unit, first remove a nut of small
diameter side, or a seal cap of big diameter side will fly out. Free from
water into the piping when working.
CAUTION
Be sure to tighten the flare nut to the specified torque with a torque wrench.
If the flare nut is overtightened, the nut may be split after a long period has
passed, and may cause a refrigerant leak.
Please be careful when bending
plants. the copper pipe.
Screw in manually while adjusting
the center. After that, use a torque
wrench to tighten the connection.
Flare nut
Torque
Wrench
wrench
Item Qty
Drain Pipe WARNING
THIS APPLIANCE MUST BE EARTHED.
1
Procedures of Wiring
1
RAC-XJ25/35WHAE
Indoor Unit Outdoor Unit
Drain Pipe
1
RAC-XJ50WHAE 1 2 3 L N 1 2 3
Bush Bush
2 2
RAC-XJ25/35WHAE
Connecting Cord
The refrigerating machine oil is
easily affected by moisture. Use
caution to prevent water from
entering the cycle.
The difference in height between
the indoor and outdoor unit
Detail of Cutting the Connecting Cord
should be kept below 10m.
The connecting pipe, no matter
Outdoor Unit
big or small, should all be 160mm
insulated with insulation pipe and
10mm
then wrapped with vinyl tape.
(The insulator will deteriorate if
Strip
it is not wrapped with tape).
wires
The connection of insulated
drain hose.
Green +
Inner diameter 16mm
Yellow
20mm
100mm
Please use insulated drain
hose for the indoor piping
WARNING
(commercial product)
The naked part of the wire core should be 10mm fix it to the terminal tightly. Then
above 150mm
try to pull the individual wire to check if the contact is tight. Improper insertion may
give clearance as wide
burn the terminal.
as possible
Be sure to use only wire specified for the use of air-conditioner.
above 200mm
Please refer to the manual for wire connection and the wiring technique should
meet the standard of the electrical installation.
For outdoor unit installation,allow
There is an AC voltage drop between the LN terminal if the power is on. Therefore,
at least 2 sides of space around
be sure to remove the plug from its socket.
the unit to ensure ventilation flue.
When the fuse (F5 or F6) has been blown out by the improper connection of power
above 150mm cable, it can be restored by exchanging the fuse (service part No.HWRAC-25WXD A11).
give clearance as wide
Please exchange the blown-out fuse after making sure the right connection.
as possible
above
Power Source And Operation Test
200mm
Power Source
WARNING
Never remodel the power plug nor extend the long-distance cord.
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.
The power cable easily generates heat. Do not bring the cable together
with a wire or vinyl tie.
Operation test
Please be sure to measure the supply voltage before operation test.
Please ensure that the air conditioner is in normal operating condition
during the operation test.
1. Operate with Cooling Mode(in summer) or Heating Mode(in winter).
2. Press Temperature Button on the remote controller to set the desired
temperature to 16.0 for Cooling Mode or 32.0
Set the desired fan speed to "
3. Operate the air conditioner for 20 minutes at least and make sure that
the air from the air conditioner is cool or warm.
4. Press On/Off Button on the remote controller and make sure that the
air conditioner stops the operation.
If the indication lamps of the indoor unit flash with sounding of the buzzer
during the operation test, perform a check following the procedures below.
3 Remove of Air From The Pipe And Gas Leakage Inspection
Procedures of using Vacuum Pump for Air Removal
As shown in right figure, remove the cap
CAUTION
of valve core. Then, connect the charge
Remove burr and jagged edge will cause leakage.
hose. Remove the cap of valve head.
1
Point the side to be trimmed downwards during
Connect the vacuum pump adapter to the
trimming to prevent copper chips from entering
vacuum pump and connect the charge
the pipe.
hose to the adapter.
Outer A (mm) Rigid Flaring Tool
Fully tighter the "Hi" shuttle of the manifold
Diameter (Ø) For R410A,R32 tool For R22 tool
valve and completely unscrew the "Lo"
shuttle. Run the vacuum pump for about
6.35 (1/4") 0 - 0.5 1.0
10-15 minutes, then completely tighten the
A
9.52 (3/8") 0 - 0.5 1.0
"Lo" shuttle and switch off the vacuum
12.7 (1/2") 0 - 0.5 1.0
2 pump.
Loosen the spindle of the service valve
with small diameter by 1/4 turn and
tighten the spindle immediately after 5
to 6 seconds.
Remove the charging hose from the
service valve.
Completely unscrew the spindle of the
service valve (at 2 places) in anticlockwise
3
direction to allow the flow of refrigerant
Outer diameter Torque N·m
(using Hexagonal Wrench key).
of pipe (ø) (kgf·cm)
Tighten the cap of valve head. Check the
Small diameter side 6.35 (1/4") 13.7-18.6 (140 - 190)
4
cap's periphery if there is any gas leakage.
9.52 (3/8") 34.3-44.1 (350 - 450)
The task is then completed.
Large diameter side
12.7 (1/2") 44.1-53.9 (450 - 550)
Small diameter side 6.35 (1/4") 19.6-24.5 (200 - 250)
Gas leakage inspection
Valve
9.52 (3/8") 19.6-24.5 (200 - 250)
head cap Please use gas leakage detector to check if leakage occurs at
Large diameter side
12.7 (1/2") 29.4-34.3 (300 - 350) connection of Flare nut as shown on the right.
If gas leakage occurs, further tighten the connection to stop leakage.
Valve core cap 12.3-15.7 (125 - 160)
Leave some space in the connecting cord for maintenance purpose and be
sure to secure it with the cord band.
WARNING 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 cover for wire connection.
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 cover fixed in certainly. Otherwise water leakage may occur
WARNING 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.)
AC 220-240V
Checking for the electric source and the voltage range
1ø 50Hz
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 blocked rotor current.
L N 1 2 3
cover
1
2
3
Connecting cord
Cord band
RAC-XJ25/35WHAE
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.
IMPORTANT FOR(Connecting cord-1,2,3,Earth)
Model Circuit Breaker Model
RAC-XJ25WHAE RAC-XJ25WHAE
13A
RAC-XJ35WHAE
RAC-XJ35WHAE
RAC-XJ50WHAE 20A RAC-XJ50WHAE up to 30m
Indication lamps flashing
What to check
mode
Make sure that the spindles of both service
valves are open. (Outdoor fan might operate
All indication lamps flash
for near 15 minutes after the operation stop
three times repeatedly.
for the protection. For the reoperation at that
case, do it after outdoor fan will stop.)
Befor the check and the reoperation, reset the power supply by
turning off and on the circuit breaker only after
waiting for at least 5 mintes; or
pressing the Temporary Switch Button only once while the power
is OFF.
CAUTION
Don't operate for over 5 minutes with the situation that the spindle of
the service valve is closed. This will cause the defect.
Don't operate by Cool Mode or Dry Mode with the door and windows
opened, (the room humidity is alwa ys above 80%) for a long period
of time. Water will condense and drip down occasionally.
This will wet your furniture.
for Heating Mode.
"(High).
Explain to your customer the proper operation procedures as
described in the user' s manual.
If the indoor unit won't operate, check the cable for correct
connection.
Turn on the lamp in the room where the indoor unit is installed
and check the remote controller for normal operation.
When the meter reaches - 101KPa
(-76cmHg) during pumping fully
tighten the shuttle.
Meter showing
pressure
Closed
R410A,R32
Charge
Manifold
hose
valve
Vacuum
pump
Valve
Vacuum
pump
adapter
Valve
When pumping starts, slightly
loosen the flare nut to check of
air sucked in. Then tighten the
flare nut.
The body of service valve
Cap of
valve core
Cap of valve head
Hexagonal wrench Key
Cap of valve
head
L N 1 2 3
cover
Cord band
Earth
Earth
terminal
RAC-XJ50WHAE terminal
FOR(power cord-L,N,Earth)
Wire length wire cross-section
Model wire cross-section
RAC-XJ25WHAE
2 2
up to 2 m 0 1.5mm 2.5mm
RAC-XJ35WHAE
2
1.5mm 2
RAC-XJ50WHAE 2.5mm
Refrigerant
Refrigerant
MODEL GWP t CO2 eq.
(kg)
RAC-XJ25WHAE
R 32:1.030 675 0.695
RAC-XJ35WHAE
RAC-XJ50WHAE R 32:1.300 675 0.878