Hitachi RAC-25FXB Installation Manual

FOR SERVICE PERSONNEL ONLY
EN
1
OUTDOOR UNIT
MODEL

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.
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 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.
• 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 R410A. Otherwise, this may result in broken copper pipes or faults.
• When installing or transferring an air conditioner to another location, make sure that air other than the specified refrigerant (R410A)
does not enter the refrigeration cycle. If other air should enter, the pressure level of the refrigeration cycle may increase abnormally
which could result in a rupture and injury.
• 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 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.
• 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 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.
• 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.
• 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.
RAC-25WXB/RAC-35WXB
RAC-25FXB/RAC-35FXB
Please remove side cover
Please face this side (suction
when connecting the piping
side) of the unit to the wall.
and connecting cord.
• 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.
RAC-25WXB/RAC-35WXB
RAC-25FXB/RAC-35FXB
BASE
above
Push
100mm
2
DRAIN HOLE
BUSH
Outer diameter : 1
DRAIN PIPE
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.
RAC-18_25_35_50WPB_IM_English 1
RAC-25FXB
RAC-35FXB
RAC-50FXB
RAC-25WXB
RAC-35WXB
RAC-50WXB
WARNING
RAC-50WXB/RAC-50FXB
Please face this side (suction
side) of the unit to the wall.
Pull downward
BASE
DRAIN HOLE
above
100mm
BUSH
Push
DRAIN HOLE
Outer diameter
16 mm or more
• 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 funiture.
• An IEC approved power cord should be used. Power cord type: NYM.
THE CHOICE OF MOUNTING SITE
(P lease note the following matters and obtain permission from customer before installation.)
•
The Outdoor unit must be mounted at a location which can support heavy
weight. Otherwise, noise and vibration will increase.
Do not expose the unit under direct sunshine or rain .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.
Dimension of Mounting
Stand of the Outdoor unit
RAC-25WXB/RAC-25FXB
RAC-35WXB/RAC-35FXB
RAC-50WXB/RAC-50FXB
A
B
C above 50mm
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.
Please remove side cover
when connecting the piping
and connecting cord.
Drain hose
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.
RAC-50WXB/RAC-50FXB
About the outdoor unit:
• When "Stop" is selected during operation
of the indoor unit, the fan of the outdoor
unit continues turning for 10 to 60
seconds to cool the electric parts down.
• In heating operation, condensate or
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
DRAIN PIPE
1
ceiling, install the bush and drain pipe
on the drain port and drain water.
RAC-25/35WXB,RAC-25/35FXB
RAC-50WXB,RAC-50FXB
CAUTION
WARNING
CAUTION
Figure showing the Installation of Outdoor Unit.
Names of Outdoor Components
No.
Drain Pipe
Mounting Stand
1 (25WXB,25FXB,35WXB,35FXB)
50
Drain Pipe
12
35
500
Bush Bush
125
750 2
(25WXB,25FXB,35WXB,35FXB)
Mounting Stand
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
543.5
should be kept below 10m.
800
The connecting pipe, no matter
(unit : mm)
big or small, should all be
insulated with insulation pipe and
RAC-50WXB
RAC-25/35WXB RAC-25/35WXB then wrapped with vinyl tape.
RAC-50FXB
RAC-25/35FXB
(The insulator will deteriorate if
above 100mm above 300mm
it is not wrapped with tape).
above 300mm above 700mm
The connection of insulated
drain hose.
above 150mm
give clearance as wide as possible
above 200mm
Please use insulated drain
hose for the indoor piping
(commercial product)
C
give clearance as wide
as possible
above
B
RAC-25/35WXB
RAC-25/35FXB
For outdoor unit installation,allow
above 200mm at least 2 sides of space around
the unit to ensure ventilation flue.
C
give clearance as wide
as possible
above
A
200mm
B
RAC-50WXB
RAC-50FXB
WIDTH (mm) HEIGHT (mm) DEPTH (mm)
MODEL
750 548
800 736
plants.
Item Qty
1
1
(50WXB,50FXB)
1
Inner diameter 16mm
200mm
288
350