Hitachi RAC-35FXA Installation Manual

FOR SERVICE PERSONNEL ONLY
• Carefully read through the procedures of proper installation
before starting installation work.
• The sales agent should inform customers regarding the correct
operation of installation.
HITACHI SPLIT UNIT AIR CONDITIONER
INSTALLATION MANUAL Tools Needed For Installation Work
is exclusive use tool for R410A) • ª · Screwdriver
(Mark
INDOOR UNIT / OUTDOOR UNIT • Measuring Tape • Knife • Saw • ø65mm Power Drill
• Hexagonal Wrench Key ( 4mm) • Wrench (14,17,19,
RAF-25 / RAC-25
22mm) Gas leakage Detector • Pipe Cutter • Putty
RAF-35 / RAC-35
• Vinyl Tape • Pliers • Flare Tool
RAF-50 / RAC-50
Manifold Valve Charge Hose
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 customers to keep this installation manual together with the instruction 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.
• 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.
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.
— 1 —
Figure showing the installation of Indoor and Outdoor Unit.
(For example: Wall installation)
Above 150mm
Above
The space indicated by an arrow is to
200mm
guarantee the performance of the air
conditioner. install the apparatus at the
ample space in order to carry out the
Above 100mm
maintenance and repair works.
@ Sheet
Be sure to completely
seal any gap with putty.
When mounting on a wall
(up to 150~500mm from
- Bush
the floor surface) 7
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the insulator is
insufficient, please use commercial 6
products.)
above 200mm
• The refrigerating machine oil is easily affected by moisture. Use
caution to prevent water from entering the cycle.
( above 50 mm when ) ❈ above 50mm • The difference in height between the indoor and outdoor unit should
installed on the
be kept below 10m.
❈ give clearance as
ceiling of balcony
• The connecting pipe, no matter big or small, should all be insulated
wide as possible
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.
above 100mm
above 200mm Please use insulated drain hose for the
indoor piping (commercial product).
❈ above 200mm
For outdoor unit installation, allow at least 2 sides of
space around the unit to ensure ventilation flue.
RAF-50FX8/RAC-50FX8 RAF-50PXA/RAC-50FXA
Above 150mm
Above
The space indicated by an arrow is to 200mm
guarantee the performance of the air
conditioner. install the apparatus at the ample
space in order to carry out the maintenance Above 100mm
and repair works.
@ Sheet
Be sure to com-
pletely seal any
gap with putty.
When mounting on a wall
(up to 150~500mm from
- Bush
the floor surface)
7
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the insulator
is insufficient, please use
6
commercial products.)
• The refrigerating machine oil is easily affected by moisture. Use
above 200mm
caution to prevent water from entering the cycle.
• The difference in height between the indoor and outdoor unit should
be kept below 10m.
❈ above 50mm
• The connecting pipe, no matter big or small, should all be insulated
❈ give clearance as
with insulation pipe and then wrapped with vinyl tape. (The insulator
( )
above 50 mm when wide as possible
will deteriorate if it is not wrapped with tape.)
installed on the
ceiling of balcony
The connection of insulated drain hose.
Please use insulated drain hose for the
above 100mm
above 200mm
indoor piping (commercial product).
❈ above 300mm
For outdoor unit installation, allow at least 2 sides of RAF-25FX8/RAC-25FX8 RAF-25PXA/RAC-25FXA
space around the unit to ensure ventilation flue.
RAF-35FX8/RAC-35FX8 RAF-35PXA/RAC-35FXA
< S818 : A > B — 3 —
< S885 : >
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 • The outdoor unit must be mounted at a location which can support
can provide full support to the unit. heavy weight. Otherwise, noise and vibration will increase.
CAUTION
• No nearby heat source and no obstruction near the air outlet is • Do not expose the unit under direct sunshine or rain. Besides,
allowed. ventilation must be good and clear of obstruction.
• The clearance distances from top, right and left are specified in • The air blown out of the unit should not point directly to animals or
figure below. plants.
• The location must be convenient for water drainage and pipe • The clearances of the unit from top, left, right and front are specified
connection with the outdoor unit. in figure below. At least two of the above sides must be open air.
• To avoid interference from noise, please place the unit and its • The installation height should be at least 2,300mm or more from the
Vacuum Pump Adapter
remote controller at least 1m from the radio and television. floor.
Vacuum Pump
• To avoid any error in signal transmission from the remote controller, • Be sure that the hot air blown out of the unit and noise do not disturb
please put the controller far away from high-frequency machines the neighbourhood.
and high-power wireless systems. • 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 1m away from
the antenna or signal line of television, radio or telephone. This is to
avoid noise interference.
Names of Indoor Components
No. Item Qty No. Item Qty No.
Flare Insulator Remote
Bush
1 Controller
1 =
7
1
(2 pcs for RAC-50FX8 )
(2 pcs for RAC-50FXA )
Binder
2
Drain Pipe
2
~
Insulator
8
1
Screw for Overturn
(t3 x 160 x 600)
Prevention Purifying Filter
3
8
!
Screw for Overturn
(4.1 × 32)
Prevention
9
2
Holder for Remote
Sheet
Controller
(4.0 × 34)
4 1
@
Insulator
Screw for Holder of
0
1
Remote Controller
5
2
(20 × 30 × 300)
Hanger
(3.1 × 16)
Bush
AAA size
16
-
3
6 Battery
2
The components of = & ~ are included
in the package of the outdoor unit.
Direction of Piping Dimension of Mounting Stand of
the Outdoor Unit
(unit : mm)
Mounting Stand
50
Piping configuration may be in three
different directions: direct rear piping,
12
35
right downward piping and right 500
125
sideways piping.
— 2 —
1. Installation of wall penetration and installation of protection pipe
1.1 Hole position
• Make a hole on the wall such
In the case of making a hole on the
the position as shown below,
wall.
in order to keep the flow for
condensed water smooth.
Drain hose
make lower
Plug
(Procure locally) than center of
the hole.
4
5 1.2 Wall penetration and installation of
protection pipe Indoor
• Drill a ø65mm hole on wall which is slightly Seal with
putty
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
Protection
should be completely sealed with putty to
pipe
WALL
avoid dripping of rain water into the room.
Inner diameter ø16mm
2. Installation of the indoor unit
2.1 How to remove the front cover
Please refer to section for details.
Removal and installation If there is a baseboard For sideways piping
of front cover
• If the baseboard is 5~15mm • For right sideways piping,
in thickness and 115mm or cut the stand's bushing
Screw (3 pieces)
less in height, cut the pipe with a plastic cutter or
bushing to conform to the similar tool and use a file
baseboard. for an attractive finish.
Baseboard
Plug
(Procure locally) Bushing
(2 pieces on
Screw (3 pieces)
each side)
Screw (2 pieces)
5
15
4
2.2 Drain pipe
5
• Make sure drain pipe slopes downward so that drain flows smoothly without being trapped in the middle.
• The drain hose (connecting port outer diameter: 16mm or 20mm, length: 500mm) is included in the indoor unit. Prepare
a drain pipe as shown in the following figure.
• To prevent condensation, the indoor drain pipe should be covered with heat insulation material with a thickness of more
than 10mm.
• After piping is completed, check to make sure that drain discharges smoothly. Seal the drain pipe tightly with tape to
keep dirt out.
Front view Right side view
Drain hose
Inner diameter ø16mm
(Unit: mm)
88
96
— 4 —
2.3 Connecting the pipe to indoor unit
WARNING
• Draw in the pipes through the hole of the wall or the floor to indoor.
• Arrange the pipe shown below. In the case that large pipe and small
pipe arrange to make in front and behind.
• The indoor piping should be insulated with the enclosed insulation
CAUTION
pipe.
• The pipe should first be cut longer than the length shown below.
• The excess section of the pipe should be cut off during pipe connection.
• In the case of make
• In the case of make a hole on the wall.
a hole on the floor.
Before piping
above 350
40
Floor
• Remove PIPE SUPPORT.
• Insert the drain hose into the hole in the wall.
• Winding insulation pipe for drain hose and taping 4 or 5 places to fix.
• Connect the pipe to the Indoor unit.
Item Qty
• After completing the piping connection, cover the connector with the insulator.
1 • Connect the cord (follow instructions in the section "Connection of the connecting cord" on the reverse of this sheet).
1
1
PIPE SUPPORT
3
• Since there is some space between PIPE SUPPORT and
the pipe, affix the insulator 0 to the PIPE SUPPORT.
1
As shown in the figure on the right, affix the insulator 0
to the PIPE SUPPORT to sandwich it.
• After connecting the pipes and connecting cord, be sure to
screw PIPE SUPPORT tightly and fix the pipes and
connecting cord.
• Position the easy-to-attach side of PIPE SUPPORT (after
aligning it with the pipe) to face the front and secure it with
a screw. (Be sure to install PIPE SUPPORT to prevent
rodents from entering the indoor unit.)
• To prevent the pipe connector from contacting the front
cover, push the connector as far as it goes.
• Arrange the connecting cord, pipes and drain hose neatly
and store them in the bottom section of the rear surface of
the indoor unit.
Pipe layout of the unit rear surface
Indoor unit rear surface
Connecting cord
Pipe
8 Insulator
Procedures of installation and precautions
Procedures to fix the hanger and indoor unit.
Hole Position
1. Drill holes on wall. 2. Push plug into the holes.
In the case of making a hole on
(As shown below) (As shown below)
the floor.
Wall
Plug
Hanger
65mm
3 Screw
(4.1 x 32)
9 Screw
32mm
Wall
55mm
3 Screw (4.1 x 32)
3.3 Built-in installation
Outdoor CAUTION
• If outlet is covered with the lattice door, room temperature may not be
Seal with Be sure that the wire is not in
controlled properly. Therefore, air outlet must be open as much as possible.
putty
contact with any metal in the
• If air deflector of air outlet is adjusted too much upward, room temperature
wall. Please use the protection
may not be controlled properly due to the heat inside the lattice door.
pipe as wire passing through
Therefore, the deflector must be adjusted to nearly horizontal angle.
the hollow part of the wall so
• If signal receiver is covered with the lattice door, signal receiving distance
as to prevent the possibility of
or range (angle) becomes smaller. Therefore, signal receiver must not be
damaged by mouse.
Sleeve of
covered with the lattice door.
protection pipe
• Only the vertical lattice door may be used. Be sure to use a lattice door
with an open area ratio of 75% or more. If another lattice door or one with
an open area ratio of less than 75% is used, maximum performance may
not be obtained.
• With a built-in installation, it may take more time to reach the set
temperature after the unit is switched on.
For floor piping
• For floor piping, cut the front
4. Checking of drawing drain hose
cover bushing with a plastic
• Connect the separate drain hose to the drain hose that is attached to the indoor unit.
cutter or similar tool and use
a file for an attractive finish. • For keeping the smooth flowing of condensed water the drain hose should be inclined as shown in figure below.
Cabinet
Bad Bad
Cabinet
Front cover
bushing
Bending
Condensed
upwards
water pond
Please ensure the smooth flow of condensed water of the Indoor unit during installation. (Carelessness may result in water
leakage.)
Make sure the drain hose
slopes downward.
Connecting section
Drain pipe (procure locally)
3. Fixing the indoor unit
WARNING
3.1 Floor installation
• For sideways piping, do not install the drain
hose sideways. Connect the drain hose so that
1. Drill holes on wall.
it comes out directly.
(As shown below)
• Sideways installation of the drain hose will
prevent it from sloping downward, causing
Wall
water leakage. To avoid dripping, make sure to
pass the drain hose under the pipe.
• Sideways piping.
(Unit: mm)
After piping
Top view Front view Right side view
Small pipe
Large pipe
Wall
Fixing the base of indoor unit
Floor
170
• Fix the base of indoor unit on the floor with 4.1 × 32mm screws (right and left).
• When fixing the indoor unit above the ground, be sure to fix an L-angle at the bottom to support it.
Screw
2 Binder
Wrap flare insulation, bind
1 Flare
top and bottom flare
insulator
insulation by binder. Wrap
tape on flare insulation
closely. 3 Screw (4.1x32)
2 Binder
Pipe
3.2 Wall installation
CAUTION
Direct mounting on the wall
0 Insulator
When mounting the flare
insulator 1, make sure there
Please remove 3 screws and clip
•
is a space between the which fix to the stand and cabinet.
insulator and left of resin
(As shown in the figure below)
PIPE SUPPORT part. Otherwise, may cause
water dripping.
Hook the PIPE
SUPPORT tab in
the square hole.
Screws
PIPE SUPPORT
Mount PIPE SUPPORT so that the cylindrical portion of the drain pan passes
through its hole and secure it with screws located at the right back corner.
Pipe/drain hose layout when passing through the file in a wall
The draining of the water container inside the Indoor unit can be done from the left. Therefore the hanger must be fixed
Connecting cord horizontally or slightly tilted towards the side of drain hose. Otherwise, condensed water may overflow the water container.
Pipe
8 Insulator
Drain hose
— 5 —
• 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. Reinstall the side cover
3. Fix the hanger on wall with 4. Fix the indoor unit on the wall
in reverse order of the removal.
4.1 X 32 and 4.0 X 34 screw. with 4.1 X 32 screw.
(As shown in figure below)
3 Screw
3 Screw
9 Screw
(4.1 x 32) (4.1 x 32)
(4.0 x 34) (4.0 x 34)
Horizontal air deflector (Air intake)
Above 150mm
Above
Condensed water disposal of outdoor unit
100mm Above 200mm
• There is holes on the base of outdoor unit for condensed water to exhaust.
Signal receiver • 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.
• Cover the drain hole with a bush. To install the bush, put it on the drain hole as shown in the figure and press the both
Horizontal air deflector (Air outlet)
sides of the bush to fit into the hole. After installation, check whether the drain pipe and bush cling to the base firmly.
Lattice door
30mm
Above 100mm
Air conditioner
Bad Bad
WARNING
Be sure that the hose is not loosely
Condensed connected or bent.
• Install the outdoor unit horizontally and make sure that condensate drains away.
water pond
• In case of using in cold weather area
Ditch Especially when there are heavy snows in cold weather area, condensed water freezes on the base and may not drain.
In this case, please remove the bush and the drain pipe at the bottom of the unit (left and centre near discharge portion
of air, each 1 place) to restore smooth drainage. Ensure that the distance from the drain hole to the ground is 250mm or
CAUTION
more.
— 7 —
Fixing on the wall Fixing on the hanger
2. Push plug into the
holes.
440 155
(As shown below)
Plug
Cabinet
3 Screw
(4.1x32)
3 Screw
3 Screw
(4.1x32) (4.1x32)
55
32mm
Wall
WARNING
Be sure to attach screw 3 to prevent
the indoor unit from overturn.
Screw
Case 1. Drill holes on floor. 2. Push plug into the holes.
3 Screw (4.1x32)
Floor Indoor unit
Plug
(Procure locally)
3 Screw (4.1x32)
(The plug can be secured diagonally with a screw as shown above.)
Please remove the screws which fix the cabinet and hanger.
•
Please use hidden beams in the wall to hold the hanger.
•
Level
External dimension of
indoor unit
20mm
20mm
Hanger
Mark
Line
Hole for pipe
Weight
Screw for Hanger
Please use more
750mm Drain Hose than 6 screws
55mm
CAUTION
— 6 —
Please face this side (suction Please remove side cover when
connecting the piping and connecting
side) of the unit to the wall.
cord. CAUTION
• Do not touch the suction port,
bottom surface, or aluminium fin of
Pull downward the outdoor unit.
• Failure to do so may cause an
injury.
Base
Base
Above 100mm
= Bush = Bush
Drain hole Drain hole
~ Drain pipe
~ Drain pipe
Outer diameter: 16mm
Outer diameter: 16mm
RAC-50FX8 RAC-25FX8 • RAC-35FX8
RAC-50FXA RAC-25FXA RAC-35FXA
— 8 —
ø9 rear
fixing hole
for anchor
bolt or
screw of
accessory.