Hitachi RAD-50DH7A Installation Manual

FOR SERVICE PERSONNEL ONLY
INVERTER SYSTEM SINGLE DUCTING
UNIT AIR CONDITIONAL
INSTALLATION MANUAL
Indoor Unit Outdoor Unit
RAD-50DH7A RAC-50DH7
RAD-60DH7A RAC-60DH7
RAD-70DH7A RAC-70DH7

SAFETY PRECAUTION

G Read the safety precautions carefully before operating the unit.
G 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.
!
G
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.
G
Please observe the instructions stated in the installation manual during the process of installation. Improper installation may
cause water leakage, electric shock and fire.
G 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.
G
Observe the rules and regulations of the electrical installation and the methods described in the installation manual when
dealing with the electrical work. Use power cables approved by the authorities of your country.
G Be sure to use the specified 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. Improper insertion and loose contact may cause over-heating
and fire.
G
Please use the specified components for installation work. Otherwise, the units may collapse or water leakage, electric shock
and fire may occur.
G Be sure to use the specified piping set for R410A. Otherwise, this may result in broken copper pipes or faults.
G
When installing or removing an air conditioner, 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.
G
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.
G 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.
G
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.
!
G
A circuit breaker or fuse (30A time delay) 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 line to the outdoor unit.
G 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.
G
Please ensure smooth flow of water when installing the drain hose.
G Piping shall be suitable supported with a maximum spacing of 1m between the supports.
1 Opening on ceiling & suspension bolt
G Need a connecting work for refrigerant pipe, drain pipe and F cable in the ceilling after suspending the indoor unit. Arrange
drain pipe, refrigerant pipe and F cable in their installation position.
G
For finishing of opening on ceiling, arrange with builder in detail.
G
If ceilling is already completed, connecting cables between indoor and outdoor, piping and drain piping must be done before
fitting indoor unit.
2 Preparation for installing indoor unit
Installation of suspension bolts
G Be sure to reinforce furring of ceiling (frame : ceiling joints and supporter) to maintain level of ceiling and prevent vibration
of ceiling plate.
Suspension bolts should be purchased in the field.
G
G Refer to diagrams shown below for length of suspension bolts.
G In case of wooden frame G In case of steel frame
60 ~ 90mm square piece of lumber
150 ~ 160mm
Reinforcing
bar
Nut
Angle
Nut
Angle
Suspension
bolt (M10)
Ceiling
< >
IA378: A
G Carefully read through the procedures of proper
installation before starting installation work.
G The sales agent should inform customers regarding
the correct operation of installation.
Tools Needed For Installation Work
G + – Screwdriver G Measuring Tape
G Saw G ø 65mm Power Drill G Allen Key (
G Wrench (14, 17, 19, 22, 24, 27mm)
G Gas Leakage Detector G Pipe Cutter
G Plastic Tape G Pliers G Flare Tool
WARNING
CAUTION
Unit : mm
70 18
Wired remote controller
(Unit : mm)
Insert 980 ~ 1470N
(100 ~ 150kgf) Bend slip-
preventive metal
C type
metal
Concrete
Suspension bolt (M10)
Hanger bolt
Angle
H beam
Suspension
bolt (M10)
Ceiling
THE CHOICE OF MOUNTING SITE
WARNING
!
G
The unit should be mounted at stable, non-vibratory location which
can provide full support to the unit.
! CAUTION
G
No nearby heat source and no obstruction near the air outlet is
allowed.
G
The clearance distances from top, right and left are specified in
figure below.
G
The location must be convenient for water drainage and pipe
G Knife
connection with the Outdoor unit.
4mm)
G
To avoid interference from noise please place the unit and its
remote controller at least 1m from the radio, television and inverter
type fluorescent lamp.
G
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.
G
The installation height of indoor unit must be 2.3m or more in a
non public area.
Accessories to indoor Unit:
Screw (4mm)
Binder
Filter Holder
9
Screw for Filter Holder
10
Other optional parts for display
panel & wireless remote control
SPX-RCK2
No. Item
Display panel
1
Panel installation plate
2
3 Panel cover
Remote controller (wireless)
4
Holder for remote control
5
3.1 x 16 screw
6
Wall Penetration and Installation of Protection Pipe
G Drill a ø 65mm hole on wall which is slightly tilted towards the outdoor side. Drill the wall at a small angle.
G Cut the protection pipe according to the wall thickness.
G Empty gap in the sleeve of protection pipe should be completely sealed with putty to avoid dripping of rain water into the room.
Indoor
Seal with putty
Protection
pipe
Drain pipe installation
Prepare polyvinyl chloride pipe with a 32mm outer diameter.
G
Be sure to roll an insulation (thickness 10mm or more) for the drain pipe at indoor side.
G
G Always draw the drain pipe downward so that water flows smoothly. Fix it (ex. by hanger) to prevent a peak and trap.
Downward 1/25 ~ 1/100
Insulation (Thickness
10mm or more)
G In case drain piping cannot be done smoothly due to obstacles, it can also be arranged outside of the main unit as shown in the drawing
below.
G Maximum drain-up length shall not more than 500mm height.
Long nut
Suspension
bolt (M10)
G
When the relative humidity of inlet or ambient air exceeds 80%, apply an (field-supplied) auxiliary drain pan beneath the indoor unit as
shown below
Suspension
bolt (M10)
(Please note the following matters and obtain permission from customer before installation).
G
The outdoor unit must be mounted at a location which can sup-
port heavy weight. Otherwise, noise and vibration will increase.
G
Do not expose the unit under direct sunshine or rain. Besides, ventilation
must be good and clear of obstruction.
G
The air blown out of the unit should not point directly to animals or plants.
G
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.
G
Be sure that the hot air blown out of the unit and noise do not disturb the
neighbourhood.
G
Do not install at a location where there is flammable gas, steam, oil and
smoke.
G
The location must be convenient for water drainage.
G
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.
Names of Outdoor Components
Dimension of Mounting Stand
of the outdoor unit
No. Item Qty
(unit : mm)
Bush
11 1
mounting stand
Bush
12 3
Drain Pipe
13 1 12
35
508
Be sure to
completely
seal any
gap with
putty.
! CAUTION
G Install the indoor unit with a proper
clearance around it for operation
and maintenance working space.
G In case that the ceiling board can
not be detected for servicing,
prepare a service access door
below the indoor unit for removing
the indoor unit.
Quantity
1
1
1
1
500
1
2
Outdoor
2 ~ 5mm
Seal with
putty
Be sure to use protection pipe (commercial product).
If connecting cables are touching metal lath inside
the wall or inside the wall is hollow where mouse
Sleeve of
can bite cables, it can cause electrical shock or fire.
protection
If sealing is not complete, high humidity air from
pipe
inside the wall or outside of the room can come in
WALL
and cause water dripping.
Seal
Trap
No insulation
Auxiliary Drain Pan
(Field-Supplied)
To the Atmosphere
WARNING
!
! CAUTION
Figure showing the Installation
of Indoor and Outdoor Unit.
57
The indoor piping
should be insulated
with the enclosed
insulation pipe. (If the
198
insulator is insufficient,
please use commercial
producrts.)
Drain pipe
Must be installed separately.
Insulate indoor part of pipe to
prevent condensation.
G The difference in height
between the indoor and
outdoor unit should be
kept below 20m.
G The connecting pipe, no
matter big or small, should
all be insulated with
insulation pipe and then
wrapped with vinyl tape.
(The insulator will
deteriorate if it is not
wrapped with tape).
CAUTION
!
Always install the indoor unit level.
Units not installed level may leak.
CAUTION
!
G Discharge grille and suction grille
shall be covered by insulation
material to prevent water drop.
!
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.
! WARNING
Stagnant
water