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Installation Manual
FOR
SERVICE
Indoor Unit / Outdoor Unit
RAS-08AH1/RAC-08AH1
RAS-10AH1/RAC-10AH1
RAS-14AH1/RAC-14AH1
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.
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.
Installation of Mounting Plate, Wall Penetration and Installation of Protection Pipe
1
CAUITON
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.
External dimension of
indoor unit
450mm
400mm
316mm
125mm
20mm
125mm
41mm
44mm
42mm
45mm
45mm
390mm
65mm
65mm
10mm
530mm
Drain Hose
780mm
Mounting
Plate
Level
Line
Screw for Mounting plate
Hole for
Mark
Please use more
pipe
than 4 screws.
Procedures of Installation and Precautions
Procedures to fix the mounting plate.
1. Drill holes on wall.
2.Fix the mounting plate on
(As shown below)
wall with 4.1 x 32 screw
(As shown in figure below)
Wall Penetration and Installation of Protection Pipe
Drill a ø 65mm hole on wall
which is slightly tilted
Indoor
Outdoor
towards the outdoor side.
2~5mm
Drill the wall at a small angle.
Cut the protection pipe
according
to
the
wall
thickness.
Empty gap in the sleeve of
Seal with
WALL
putty
protection pipe should be
Sleeve of
Protection
protection
completely sealed with putty
pipe
pipe
to avoid dripping of rain
water into the room.
PERSONNEL
ONLY
CAUTION
2
Installation of the Indoor Unit
VERTICALLY DOWNWARD PIPING
Preparation
Connect power cord.
Pull out the pipe, power 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.
Mounting Plate
wall nole
Coolant pipe
65mm
Protection
Drain Hose
Pipe
Drain Hose
Power Cord
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).
Drain cap
Remove the cap for drain hose installation
Drain cap
Please insert
until here
CAUITON
HORIZONTAL & DOWNWARD PIPING – MAKING OPENINGS
CAUITON
During horizontal or downward piping, use a knife to cut
openings as shown in figure. Then smoothen the edges
Be sure that the wire is not
of openings with a file.
in contact with any metal
in the wall. Please use the
Pipe
protection pipe as wire
support
passing through the hollow
part of the wall so as to
prevent the possibility of
Pull up the pipe after
bending downward
damaged by mouse.
THE CHOICE OF MOUNTING SITE
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.
Component's Name
Qty
Hanger
1
1
Screw for Hanger
6
2
( Φ
4 . 1 x 3 2 )
AAA Size Battery
2
3
Remote Controller
1
4
5
1
Heat insulating materials
Dimension of Mounting Stand of the outdoor unit
(unit : mm)
45
500
698
(For 08AH1、10AH1)
RAC-14AH1
Power line, pipe and
drain hose must be
tied together with
plastic tape.
CAUITON
Please pull the lower part
of
the
indoor
Mounting
Lift the body
Plate
outwards to check if the
of the unit
unit is hooked onto the
upwards and
Projection
mounting plate. Improper
then force
it downwards.
installation may cause
vibration and noise.
Hook
Drain cap
Drain hose
Drain hose
Drain hose
Please insert
until here
Condensed water may leak out if not inserted properly.
Openings
Transform the piping while holding down the lower portion
of pipe-support by hand.
(Please 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 plants.
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.
The installation height should be at least 2,300 mm or more
from the floor.
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
The Length of Indoor Unit
telephone. This is to avoid noise interference.
Power Cord
about
0.9m
about 1.6m
Figure showing the Installation
Do not alter the power cord.
of Indoor and Outdoor Unit.
CAUITON
In case the pipe length is more than 5m, add refrigerant R410A at
15 gram (14AH1)/15 gram (08/10AH1) per every meter exceeds.
Cut away shaded
However, pipe length shall not exceed 10m.
portion, and finish
the edge of the
opening so that
20
there is no burr.
Direction of Piping
Be sure to
above 250mm
completely
Horizontally
seal any
perpendicular
to the unit
gap with
putty.
Connection
There
are
4
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.
50
500
750
(For 14AH1)
above 200mm
above 300mm
above 300mm
above 700mm
INSTALLATION OF COOLANT PIPES AFTER CONNECTION
The coolant 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.
Connect the power cord.
After adjustment, fit the power cord and pipes into
the space available under the indoor unit.
unit
Pipe
THE CONNECTION OF COOLANT PIPE DURING THE
INSTALLATION OF INDOOR UNIT
Preparation To Install Coolant Pipes
Coolant pipes and power cord must be tied together.
The front part of the coolant pipes are at locations
marked with "
" symbol.
Please bend at a small
0.85m
radius to form an arc
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.
Insulate the connecting portion of coolant pipe with insulator.
Connect the power cord.
After adjustment, the power cord and coolant pipes are placed
into the space available under the indoor unit.
The projection of indoor unit must hook to the mounting
plate.
Heat insulation
pipe
Pull this to the front
during the connection
Coolant pipes
of coolant pipes to
Power cord
ease task.
3
Installation of Drain Hose
Drain
Bending
Stagment
upwards
water
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
CAUTION
unit during installation. (Carelessness may result in water leakage.)
WARNING
CAUTION
above 50mm
above 100mm
The difference in height
between the indoor and
outdoor unit should be
kept below 5m.
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).
above 100mm
The connection of insulated
give clearance
drain hose.
as wide as possible
above 200mm
Please use insulated drain
hose for the indoor piping
(commercial product).
RAC-08AH1
RAC-10AH1
Drain hose
Pipe
Power cord
CAUITON
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.
Pipe
Rubber strap tied with great force
CAUITON
Please fix in the plastic
core after flaring to avoid
plastic chips entering the
pipes.
below
5mm
Temporary stand
Projection
Hook
about 15cm
Protection
pipe
Drain
Connected
hose
terminals
Power cord
of coolant
pipes
CAUITON
Be sure that the
drain hose is not
loosely connected
Stagment
or bent.
water
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Summary of Contents for Hitachi RAS-08AH1
-
Page 1: Safety Precaution
Outdoor unit. specified in figure below. At least three of the above sides must be open air. RAS-08AH1/RAC-08AH1 To avoid interference from noise, please place the unit and The installation height should be at least 2,300 mm or more... -
Page 2: Procedures Of Wiring
Please mount the Outdoor unit of stable ground to prevent vibration and increase Preparation of Pipe Remove of Air From The Pipe And Gas Leakage Inspection of noise level. Use a pipe cutter to cut the copper pipe and remove burr. Decide the location for piping after sorting out the different types of pipe available.