Hitachi RAM-55QH5 Installation Manual

FOR SERVICE PERSONNEL ONLY
SPLIT UNIT AIR CONDITIONER
INSTALLATION MANUAL
Outdoor Unit RAM-55QH5
HFC
R410A

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.
Make sure to connect earth wire.
This sign in the figures indicates prohibition.
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 R-410A. Otherwise, this may result in broken copper pipes or faults.
G
When installing or removing an air conditioner, only specified refrigerant (R410A) 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.
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 Be sure to connect the earth wire from the power supply wire to the outdoor unit and between the outdoor and indoor
unit. Improper earthing may cause electric shock.
!
G A circuit breaker must be installed in the house distribution box for the direct connected power supply wire to the outdoor unit.
In case of other installations a main switch with a contact gap or more than 3.5mm has to be installed. Without a
circuit breaker, the danger of electric shock exists.
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
Be sure to tighten the flare nut to the specified torque using a torque wrench. If the flare nut is tightened excessively, it may
crack as time elapses, cause refrigerant leakage.
G Please ensure smooth flow of water when installing the drain hose.
G An IEC approved power cord should be used. Power cord type: NYM.
THE CHOICE OF MOUNTING SITE
(Please note the following matters and obtain permission from customer before installation).
G
The Outdoor unit must be mounted at a location which can support 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 3 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 connecting cord at least 1m away from the antenna or signal line of television, radio or telephone.
This is to avoid noise interference.
Figure showing the Installation of Outdoor Unit.
Names of Outdoor Components
Height difference
No. Item Qty
Bush Height difference between indoor units should
be not more than 5m.
10
3
Drain Pipe
11
1
Outdoor unit
Bush
12
1
above 200mm
Dimension of Mounting Stand
( above 50mm when
installed on the
of the Outdoor unit ceiling of balcony
(unit: mm)
mounting stand
57
above 100mm
12
35
508 198 above 700mm
[Outdoor unit installation]
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.
! CAUTION Flare adaptor for piping
The flare adaptor for piping is required
G Make sure to connect to
depending on combination of indoor
two indoor units.
units.
• ø9.52(3/8") ➝ ø 12.7 (1/2")
Parts number TA261D-4 001
One unit of 1.8kW, 2.5kW or 3.5kW
One unit of 1.8kW, 2.5kW, 3.5kW or
5.0kW
(5kW unit: Optional flare adaptor for
piping is necessary.)
To the outdoor unit, up to two indoor units can be connected until
the total value of each units's capacity reaches 7.5 kW.
The pipe connection ports of the outdoor unit and connectable indoor
units are shown below.
< >
I920: 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
(Mark is exclusive use tool for R410A)
G + – Screwdriver G Measuring Tape
Saw G ø 65mm Power Drill G Hexagonal Wrench
Key ( 4mm) G Wrench (14, 17, 22, 26mm)
Leakage Detector G Pipe Cutter G Putty
G Pliers G Flare Tool Vacuum Pump Adapter
Manifold Valve Charge Hose
WARNING
CAUTION
WARNING
!
CAUTION
!
Piping length
Indoor unit 1
Indoor unit 2
L1
Indoor unit 1
Outdoor unit
(L1 + L2) = Maximum 35m
Maximum piping length for one indoor unit is 25m.
Additional charge of refrigerant is not required.
)
above 100mm
When removing side cover, pull the handle
give clearance as
wide as possible after releasing the hook by pulling it
downward.
Face this side (suction side) of
the unit to the wall.
above 200mm
Pull downward
CONDENSED WATER DISPOSAL OF OUTDOOR UNIT
There are holes on the base of Outdoor unit for condensed
water to exhaust.
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.
At first insert one portion of the hook to the base (Portion
A), then pull the drain pipe in the direction shown by the
arrow while inserting the hook into the base. After installation,
check whether the drain pipe cling to the base firmly.
A
BASE
DRAIN PIPE
BUSH
10
When Using and Installing In Cold Areas
When the air conditioner is used in low temperature and in
snowy conditions, water from the heat exchanger may freeze
on the base surface to cause poor drainage. When using the
air conditioner in such areas, do not install the bushings. Keep
a minimum of 250mm between the drain hole and the ground.
When using the drain pipe, consult your sales agent.
For more details, refer to the installation Manual for Cold
Areas.
If you wish to prepare the copper tubes and insulation material in the field, we recommend the following.
No.
4.0kW or less
1 Cooper tube
5.0kW
4.0kW or less
G Knife G
2 Flare nut
Gas
5.0kW
G Vinyl Tape
Vacuum Pump
3 Insulation for refrigerating pipe
4 Connecting cord
5 Vinyl tape
6 Sealer (Putty)
7 Refrigerator oil
8 Bushing for refrigerating pipes
1. Proper place for installation
1.1 Outdoor unit
(1) Keep the space around the unit for maintenance and avoiding the effects of hindrance for normal ventilation of the unit.
(2) The northern or eastern side of the building is better to install. At the installation on the southern or western side unavoidably, some blind
should be set up for the unit. (In this case, the blind must not obstruct the ventilation of the unit.)
(3) You'd better not put the unit at a place where is full of dirt and at a place where is wet in the rain.
(4) Place as near as possible to the indoor unit.
(5) Install the unit in a stable place to minimize vibration or noise.
(6) After arranging the cords and pipes, secure them in place.
G This appliance must be earthed.
WARNING
!
G Power is supplied through outdoor unit, do not connect power source to indoor unit.
2.
In the electrical installation a separator with a contact gap of more than
3mm has to be installed. During cleaning or service the set has to be
switched off with this separator.
3. Installation procedure and notice
Especially, the selection of installation place need great care for the
split type air conditioner, because it is very difficult to move from place
to place after the first installation.
3.1 Wiring
(1) Connect the electrical wiring between the Indoor and Outdoor unit,
as shown in Fig. 3-1. Never connect the wiring by mistake.
In case of wrong connection, the unit does not operate properly
and it may cause malfunction.
(2) The connecting cord must be fixed by the band which is located
near the terminal board.
Procedures of Wiring
Wiring Pattern
Indoor unit No. 1
Screw for ground, earth screw
Terminal board
C D
Green-and-
Connecting cord
Yellow
Ø1.6 or 2.0
C1 D1
Terminal board
Screw for ground, earth screw
For Indoor unit No. 1
Outdoor Unit
G The naked part of the wire core should be 10 mm and fix it to the terminal tightly. Then try to pull the individual wire to check if the contact is
tight. Improper insertion may burn the terminal.
G Be sure to use only power cables approved from the authorities in your country. For example in Germany: Cable type: NYM 3x1.5mm
16A time delay)
G Please refer to the installation manual for wire connection to the terminals of the units. The cabling must meet the standards of electrical
installation.
There is a AC voltage of drop between the L and N terminals. Therefore, before servicing, be sure to switch off the main switch.
G
Wiring of The Outdoor Unit
G Please remove the side cover for wire connection.
G If you cannot attach the side cover due to the connecting cord, press the connecting cord in direction to the front panel
to fix it.
!
G Be sure that the hooks of the side cover is fixed in certainly. Otherwise water leakage may occur and this causes short
circuit or faults.
WARNING
G The connecting cord should not touch to service valve and pipes. (It becomes high temperature in heating operation.)
Indoor unit 2
3.3 Checking for the electric source and the voltage range
G Before installation, the power source must be checked and necessary wiring work must be completed. To make the wiring capacity proper,
L2 use the wire gauges list below for the lead-in from a pole transformer and for the wiring from a switch board of fuse box to the main switch
and outdoor unit in consideration of the locked rotor current.
IMPORTANT
Cable length Wire cross-section
up to 16m
up to 15m
up to 25m
Bind connecting cords to make them
fit between the convex sections.
Remove side cover
when connecting the
piping and connecting
cord.
Grounding rod
(optional)
BUSH
12
(Earth wire and grounding rod are not supplied. Please use optional items below.)
11 DRAIN PIPE
G Investigate the power supply capacity and other electrical conditions at the installation location.
Depending on the model of room air conditioner to be installed, request the customer to make arrangements for the necessary electrical
work etc.
The electrical work includes the wiring work up the outlet. In localities where electrical conditions are poor, use of a voltage regulation is
recommended.
IMPORTANT
Fuse Capacity
16A time delay fuse
Material
Small dia. Deoxidized annealed copper pipe with 6.35mm O.D., 0.8mm wall thickness.
Large dia. Deoxidized annealed copper pipe with 9.52mm O.D., 1.0mm wall thickness.
Small dia. Deoxidized annealed copper pipe with 6.35mm O.D., 0.8mm wall thickness.
Large dia. Deoxidized annealed copper pipe with 12.7mm O.D., 1.0mm wall thickness.
Small dia. Flare nuts with 6.35mm O.D..
Large dia. Flare nuts with 9.52mm O.D..
Small dia. Flare nuts with 6.35mm O.D..
Large dia. Flare nuts with 12.7mm O.D..
Foamed polyethylene insulation pipe which does not corrode the copper tube.
Large dia. pipe side: 15mm I.D.., 8mm wall thickness.
Small dia. pipe side: 8mm I.D., 7mm wall thickness.
Refer to item 3.3.
3.2 Connection of the connecting cords and power cord
(1) Cut off the connecting cord, the power cord and strip the
(2) Connect the connecting cord and power cord to the terminal
(3) Fix the connecting cords and power cord with steel band
Indoor Unit
Indoor unit No. 2
Screw for ground, earth screw
Terminal board
C D
Green-and-
Yellow
Connecting cord
Ø1.6 or 2.0
Terminal board
C2 D2
Screw for ground,
L N
Terminal board earth screw
Screw for ground, earth screw
Green-and-Yellow
For Indoor unit No. 2
Power cord
Fig. 3-1
WARNING
!
1.5mm 2
G Connect the Connecting Cord to C1 and D1 "Indoor 1" for indoor unit 1,
2.5mm 2 C2 and D2 "Indoor 2" for indoor unit 2.
2
4.0mm
After remove the screw and
cover, put the connecting
cords and fix the cover with
screw.
CAUTION
!
Arrange power cord so they do
not touch service valve.
Earth line
Fig. 3-3
Type of grounding rod Length
SP-EB-2 900mm
Specification
insulation of the wire, as shown in Fig. 3-2.
board. (Fig. 3-3)
certainly. (Fig. 3-3)
30mm
Green-and-yellow (ground)
10mm
10mm
55mm
Power cord and
connecting cord
Detail of cutting power cord and
For Indoor Unit No. 1 (C1, D1)
60mm
Green-and-yellow (ground)
10mm
10mm
85mm
Connecting cord
For Indoor Unit No. 2 (C2, D2)
Fig. 3-2
2 . (fuse =
WARNING
!
Connect the
earth cord
AC 220V~230V ONLY
INDOOR 1 INDOOR 2
L N
C D C D