Hitachi airHome 400 Installation Manual

INSTALLATION
Flare nut must use a torque wrench without fail. Tighten with the specifi ed tightening torque.
MANUAL ●
If the fl are nut is tightened too much, after a long period of time, the fl are nut breaks, Gas
leakage, stagnation, touching fi re, rarely cause ignition.
● Sharp bending of the pipe use the polyethylene rod, bend not crushed the pipe. Gas leakage
from the crushed part, stagnation, touching fi re, rarely cause ignition.
Home
● Please request your sales agent or qualifi ed technician to install your unit. Water leakage,
short circuit or fi re may occur if you do the installation work yourself.
● Please observe the instructions stated in the installation manual during the process of
installation. Improper installation may cause water leakage, electric shock and fi re.
● 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.
Must install air conditioner according to the electrical installation standards for Thailand of
●
the Engineering Institue of Thailand under The Royal Patronage of His Majesty (the King).
SPLIT UNIT AIR CONDITIONER
Be sure to use the specifi ed wire 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.
INDOOR UNIT
Improper insertion and loose contact may cause over-heating and fi re.
RAK-DH24PCAST
● Please use the specifi ed components for installation work. Otherwise, the units may collapse
or water leakage, electric shock and fi re may occur.
● Be sure to use the specifi ed piping set for R32. Otherwise, this may result in broken copper
OUTDOOR UNIT
pipes or faults.
RAC-DH24PCAST
● When installing or removing an air conditioner, only specifi ed refrigerant (R32) shall be
allowed, do not allow air or moisture to remain in the refrigeration cycle. Otherwise, pressure
in the refrigeration cycle may become abnormally high so that a rupture may be caused.
● Be sure to ventilate fully if a refrigerant gas leak while at work. If the refrigerant gas comes
EN INSTRUCTION MANUAL
into contact with fi re, a poisonous gas may occur. Be aware that refrigerants may not contain
an odour.
● After completion of installation work, check to make sure that there is no refrigeration gas
FOR SERVICE
leakage. If the refrigerant gas leaks into the room, coming into contact with fi re in the fan-
PERSONNEL ONLY
driven heater, space heater, etc., a poisonous gas may occur.
● Unauthorized modifi cations to the air conditioner may be dangerous. If a breakdown occurs
please call a qualifi ed air conditioner technician or electrician. Improper repairs may result
in water leakage, electric shock and fi re, etc.
● Carefully read through the procedures of
proper installation before starting installation
work.
● The sales agent should inform customers
regarding the correct operation of installation.
● A circuit breaker must be installed. Without a circuit breaker or fuse the danger of electric
shock exists.
A main switch with a contact gap of more than 3mm has to be installed in the power supply
Tools Needed For Installation Work
line to the outdoor unit.
+ – Screwdriver
● ● Measuring Tape
● Do not install the unit near a location where there is fl ammable gas. The outdoor unit may
● Knife ● Saw ● Pipe Cutter
catch fi re if fl ammable gas leaks around it.
Hexagonal Wrench Key ( 4mm)
●
● Do not install the indoor unit in a machine shop or kitchen where vapor from oil or its mist
● Power Drill (ø 65mm ~ ø 80mm)
fl ows to the indoor unit. The oil will deposit on the heat exchanger, thereby reducing the
● Vacuum Pump ● Pliers or Wrench
indoor unit performance and may deform and in the worst case, break the plastic parts of
Torque Wrench Vacuum Pump Adaptor
● ●
the indoor unit.
● Flare Tool ● Gas Leakage Detector
● Please ensure smooth fl ow of water when installing the drain hose.
● Manifold Valve ● Charge Hose
Piping shall be suitable supported with a maximum spacing of 1m between the supports.
●
● Reammer ● File
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.
Be sure that the unit operates in proper condition after installation. Explain to customer the proper way of operating
the unit as described in the user's guide.
<IA2184: B >
1 Installation of Hanger, Wall Penetration and Installation of Protection Pipe
! CAUTION
● The draining of the water container inside the indoor unit can be done from the left.
Therefore the mounting plate must be fi xed horizontally or slightly tilted towards the
side of drain hose. Otherwise, condensed water may overfl ow the water container.
Direct Mounting On The Wall
Please use hidden beams in the wall to hold the mounting plate.
●
660mm
145mm
145mm
65
105mm
67mm
950mm
Level
Screw for mounting plate
Mounting plate
Line
Weight Wall hole
Procedures of Installation and Precautions
Procedures to fi x the mounting plate.
●
1. Drill holes on wall. 2. Push plug into the holes.
(As shown below) (As shown below)
Procedures to fi x the holder of remote control.
●
1. Drill holes on wall. 2. Push plug into the holes.
(As shown below) (As shown below)
Wall Penetration and Installation of Protection Pipe
Drill a ø 65mm 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.
< >
IA2184: B
WARNING
!
CAUTION
!
2 Installation of the Indoor Unit
VERTICALLY DOWNWARD PIPING
Preparation
Connect connecting cord.
●
Pull out the pipe, connecting 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.
●
HORIZONTAL PIPING
Screw the hanger at the positions
Preparation
possibly near the upper and lower
hooks where the indoor unit is
Change of Drain Hose and Installation Procedures.
hung. Use 4 or more screws to
Exchange the location of drain hose and drain cap during horizontal piping as shown
●
fi x the hanger.
in fi gure 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.
3. Fix the mounting plate on wall (This is an easier way to
with 4.1 x 32 screw remove the drain cap).
(As shown in fi gure below)
Drain cap
Remove the cap for
●
drain hose installation
! WARNING
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 Condensed water may leak out if not
part of the wall so as to
inserted properly.
prevent the possibility of
damaged by mouse.
INSTALLATION OF REFRIGERATING PIPES AFTER CONNECTION
Unless it seals completely,
any air with high humidity
● The refrigerating pipes should be adjusted to fi t into the hole on the wall and then
flows from outdoor and
ready for further connection.
dew may drop.
The terminals of 2 connected pipes must be covered with insulator used for terminal
●
connection. Then the pipes are wrapped with insulation pipe.
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 specifi ed in
fi gure 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, television and inverter
type fl uorescent lamp.
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.
● The installation height of indoor unit must be 2.3m or more.
Names of Indoor Components
No. Component's Name Qty
Mounting Plate
1
1
Screw for Mounting Plate
2 6
( 4 . 1 x 3 2 )
Holder for Remote
Controller
1
3
AAA Size Battery
2
4
Screw for holder of
Remote Controller
2
5
( 3 . 1 x 1 6 )
Remote Controller
1
6
Purifying Filter
7 2
CAUTION
● A brazed, welded or mechanical
connection shall be made before
opening the valves to permit
refrigerant to fl ow between the
refrigerating system parts. A vacuum
valve shall be provided to evacuate
the interconnecting pipe and/or any
uncharged refrigerating system.
● Mechanical connectors used indoor
shall comply with ISO 14903.
When mechanical connectors are
reused indoors, sealing parts shall
be renewed. When fl are joints are
reused indoors, the fl are part shall
be re-frabricated.
● Refrigerant tubing shall be protected
or enclosed to avoid damage.
CAUTION
!
Please pull the lower
part of the indoor unit
outwards to check if
the unit is hooked onto
the mounting plate.
Improper installation
may cause vibration
and noise.
CAUTION
(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.
● Selecting the installation location: Suitable location that will reduce the
impact from rain and direct sun that may affect the unit performance.
Besides that, ventillation 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 specifi ed in
fi gure 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 fl ammable gas, steam, oil and
smoke.
● The location must be convenient for water drainage.
● Place the outdoor unit and its connection wire at least 1m away from the
antenna or signal line of television, radio or telephone. This is to avoid
noise interference.
● Do not install outdoor unit facing strong wind direction. It may damage
the fan motor.
Do not install the outdoor unit in a place where small animals may build
●
Direction of Piping
their nests. If small animal goes inside the unit and touches the electrical
parts, failure of the unit, smoke or fi re may be caused. Request your
customer to keep the surrounding of the unit is clean.
Figure showing the Installation of Indoor and Outdoor Unit.
There are 6 directions
allowed, namely, horizontally ! CAUTION
perpendicular to the unit,
In case the pipe length is more than the recommended length for chargeless,
vertically down from right,
add refrigerant R32 as below. Do not exceed the maximum pipe length.
horizontally out from right,
horizontally out to left,
horizontally out to right,
Factory
Model
vertically down from left.
charge R32 A
RAC-DH24PCAST 1.35kg
Dimension of Mounting Stand
of the outdoor unit
(unit : mm)
1
Be sure to
completely
seal any
gap with
putty.
! WARNING
Flare connection only at
●
outside of building
! CAUTION
Refrigerant piping
● Installation of pipe length less than
must be protected
minimum pipe length requirement
from physical
(3 meters) may generate an damage. Install a
plastic cover or
abnormal sound.
equivalent.
● Connect the connecting cord after removing electrical
cover. (Refer to "CONNECTION OF POWER CORD")
● After adjustment, fi t the connecting cord and pipes into
the space available under the indoor unit.
Binding band
The rubber strap used for fi xing the insulator should
●
Binding band can be
not be tied with great force. Otherwise, this will damage
installed to whichever
heat insulation and causes water condensation.
side of the installation
points. However, it is Insulation pipe (must
be wrapped with vinyl
recommended to attach
it on the right side tape at every 120 mm)
viewing from the rear.
THE CONNECTION OF REFRIGERATING PIPE DURING THE
INSTALLATION OF INDOOR UNIT
Preparation To Install Refrigerating Pipes
The end of the refrigerating pipes are at locations
●
marked with " " symbol.
1100 mm
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.
● Wrap the refrigerating pipes with insulation pipe after connecting refrigerating
pipe.
Connect the connecting cord after removing electrical cover. (Refer to
●
"Connection of Power Cord")
● After adjustment, the connecting cord and refrigerating pipes are placed
into the space available under the Indoor unit.
● The projection of Indoor unit must hook to the mounting plate.
Bottom Cover Removal and Installation
When connecting the refrigerant pipe, the bottom cover can
be removed for easy installation.
Bottom cover installation
● Put the 4 claws at front of the bottom cover into the
indoor unit notch.
● Push the left and right claw of bottom cover into the unit.
Wall hole
Refrigerating pipe Pipe
Cable Drain hose
Heat insulation pipe
Drain layout of backward
Connecting cord
piping from left
3
Installation of Drain Hose
! CAUTION
● Do not guide the drain hose to places where corrosive gases (sulfur, ammonia, etc.) are generated,
such as septic tanks and sewer.
Corrosive gas may fl ow backward from the drain hose to the indoor unit, corrode the copper pipe, or
it may cause offensive odors in the room.
● Cut the drain hose at a position 100 mm higher than the fl oor surface. It may cause water leakage
due to air lock or clogging of foreign matter.
You are free to choose the side (left or right) for the installation of drain hose.
!
Please ensure the smooth fl ow of condensed water of the Indoor unit during
CAUTION installation. (Carelessness may result in water leakage.)
WARNING
CAUTION
!
Indoor Chargeless
Additional Maximum
charge R32
(m 2 ) up to R32
min
1.72m 2 30m – 1.35kg
2
6
The indoor piping
should be insulated
4
with the enclosed
insulation pipe.
3
(If the insulator is
insuffi cient, please
use commercial
products).
kept max. 20m.
The connection of insulated
drain hose.
Please use insulated drain
hose for the indoor piping
(commercial product).
Drain hose
Pipe
Connecting cord
CAUTION
!
! CAUTION
Please fi x in the plastic core
●
after fl aring to avoid copper
chips entering the pipes.
Projection
Hook
about 15cm
Claw
Indoor unit notch
Protection
pipe
Drain hose
Bottom
cover
Connecting cord Connected
section
CAUTION
!
Be sure that the
drain hose is not
loosely connected
Above
or bend.
100mm