< S904 : >
1. Installation of wall penetration and installation of protection pipe
1.1
Hole position
Make a hole on the wall such the
position as shown below, in order
to keep the flow for condensed
water smooth.
1.2
Wall penetration and installation of protection pipe
Drill a ø65mm 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.
CAUTION
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.
Indoor
Outdoor
Seal with
putty
m
m5
~2
WALL
Seal with
putty
Sleeve of
protection pipe
Protection
pipe
2. Installation of the indoor unit
2.1
How to remove the front cover
Please refer to section for details.
Front cover
bushing
Bushing
(2 pieces on
each side)
2.2
Drain pipe
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
88
210
96
500
Drain hose
Make sure the drain hose
slopes downward.
Drain pipe (procure locally)
(Unit: mm)
2.3
Connecting the pipe to indoor unit
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
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.
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.
After completing the piping connection, cover the connector with the insulator.
Connect the cord (follow instructions in the section “5. Connection of the connecting cord” on the reverse of this sheet).
WARNING
For sideways piping, do not install the drain hose
sideways. Connect the drain hose so that it comes
out directly.
Sideways installation of the drain hose will prevent it
from sloping downward, causing water leakage. To
avoid dripping, make sure to pass the drain hose
under the pipe.
PIPE SUPPORT
PIPE SUPPORT
Screws
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.
Cabinet
For floor piping
For floor piping, cut the
front cover bushing with a
plastic cutter or similar
tool and use a file for an
attractive finish.
For sideways piping
For right sideways piping,
cut the stand’s bushing with
a plastic cutter or similar
tool and use a file for an
attractive finish.
If there is a baseboard
If the baseboard is
5~15mm in thickness and
115mm or less in height,
cut the pipe bushing to
conform to the baseboard.
115
70
5
15
Baseboard
Cabinet
Removal and installation of
front cover
Drain hose
make lower
than center of
the hole.
Screw (2 pieces)
Hook the PIPE
SUPPORT tab in
the square hole.
Since there is some space between PIPE SUPPORT and
the pipe, affix the insulator to the PIPE SUPPORT.
As shown in the figure on the right, affix the insulator
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.
Indoor unit rear surface
Pipe layout of the unit rear surface
Connecting cord
Insulator
Connecting cord
Pipe
Drain hose
Pipe/drain hose layout when passing through the
file in a wall
Pipe
Insulator
Hole Position
In the case of making a hole on the wall.
In the case of making a hole on the floor.
80~100mm
65mm
ss
el r
o
m
m4
81
55mm
Screw (3 pieces)
Binder
Flare
insulator
Wrap flare insulation,
bind top and bottom
flare insulation by
binder. Wrap tape on
flare insulation closely.
Binder
Pipe
Sideways piping.
12
0
16
0
R6
0
40
13
0
R8
0
Top view
Front view
Right side view
Wall
ll
a
W
ss
el r
o
m
m0
51
Floor
40
10
0
R8
0
170
ss
el r
o
m
m0
81
Large pipe
Small pipe
ke a hole on the wall.
Before piping.
After piping.
In the case of make
a hole on the floor.
40
28
0
Floor
40
ll
a
W
ll
a
W
CAUTION
When mounting the flare
insulator , make sure there is
a space between the insulator
and left of resin part. Otherwise,
may cause water dripping.
1
(Unit: mm)
above 270
Insulator
PIPE SUPPORT
Connecting section
Screw (3 pieces)
1
2
2
10
10
10
8
8
B
AAA size
Battery
2
Remote Controller
1
Insulator
1
(t3
×
160
×
600)
Screw for Overturn
Prevention
2
(4.0
×
34)
Insulator
1
(20
×
30
×
300)
Bush
3
Sheet
3
Air Purifying Filter
1
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 and television.
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.
Names of Indoor Components
No.
Item
Qty
Flare Insulator
1
Binder
2
Screw for Overturn
Prevention
8
(4.1
×
32)
Holder for Remote
Controller
1
Screw for holder of
Remote Controller
2
(3.1
×
16)
13
3
2
1
4
5
6
7
8
9
10
11
12
(Procure
locally)
Plug
7
4
6
5
(Procure
locally)
Plug
1
14
Hanger
[Indoor unit installation]
Direction of Piping
Piping configuration may be in three
different directions: direct rear piping,
right downward piping and right
sideways piping.
(For example: Wall installation)
12
Sheet
Be sure to completely
seal any gap with
putty.
Drain pipe
Must be installed separately.
Insulate indoor part of pipe
to prevent condensation.
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the insulator
is insufficient, please use
commercial products.)
Above 100mm
Above 150mm
Above 200mm
Bush
When mounting on a wall
(up to 150~500 mm from the floor surface)
11
14
RAF-25RXB_EN
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.
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 of 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 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.
Tools Needed For Installation Work
Measuring Tape Knife Saw
ø
65mm Power
Cutter Putty Vinyl Tape Pliers Flare Tool
Hose Vacuum Pump
Drill Hexagonal Wrench Key (
4mm) Wrench
Vacuum Pump Adapter Manifold Valve Charge
(14,17,22, 26, 27mm) Gas leakage Detector Pipe
Indoor Unit
HITACHI FLOOR UNIT
AIR CONDITIONER
INSTALLATION MANUAL
Carefully read through the procedures of proper installation
before starting installation work.
The sales agent should inform customers regarding the
correct operation of installation.
Explanation for outdoor unit is in the “How To Use”
(Instruction Manual) that packed with outdoor unit.
FOR SERVICE PERSONNEL ONLY
(Mark is exclusive use tool for R410A)
Screwdriver
RAF-25RXB
RAF-35RXB
RAF-50RXB
