Hitachi RAM-70QH4 Installation Manual

FOR SERVICE PERSONNEL ONLY
INVERTER SYSTEM MULTI TYPE
OUTDOOR UNIT INSTALLATION MANUAL
RAM-70QH4
MODEL
RAM-80QH4
• 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 indoor unit is in the "How To Use" (Instruction Manual) that packed with indoor unit.
Tools Needed For Installation Work (Mark is exclusive use tool for R410A)
• ª · Screwdriver • Measuring Tape • Knife • Saw • ø65mm Power Drill • Hexagonal Wrench
Key ( 4mm) • Wrench (14,17,22,26,27mm) Gas Leakage Detector • Pipe Cutter • Putty
• Vinyl Tape • Pliers • Flare Tool Vacuum Pump Adapter Manifold Valve
Vacuum Pump
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
watt of operating the unit as described in the user's guide.
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 instructions 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 wire which are approved official in your country. A
short circuit and fire may occur due to the use of low quality wire or improper work.
• 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.
• Please use the specified components for installation work. Otherwise, the unit may collapse or water
leakage, electric shock and fire may occur.
• 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 use the specified piping set for R410A. Otherwise, this may result in broken copper pipes or
faults.
• 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.
• 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. Improper earthing may cause electric shock.
CAUTION
• 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 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. Piping shall be suitable
supported with a maximum spacing of 1m between the supports.
• Please ensure smooth flow of water when installing the drain hose.
• An IEC approved power cord should be used. Power cord type : NYM.
Accessories to Outdoor unit:
No. Item Quantity
a
Drain pipe 1
b Bushing 1
< S552 : B >
THE CHOICE OF MOUNTING SITE
(Please note the following matters and obtain permission from customer before installation.)
WARNING
• The outdoor unit must be mounted at a location which can support heavy weight. Otherwise, noise
and vibration will increase.
CAUTION
• 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 clearance of the unit from top, left, right and front are specified in figure below. At least two of
the above sides must be open air. If it is possible to open only two sides, make sure the discharging
side is one of them.
• 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 connection wire at least 1m away from the antenna or signal line of
television, radio or telephone. This is to avoid noise interference.
Charge Hose
Height difference
RAM-70QH4 RAM-70QH4
Height difference between indoor units
should be not more than 5m.
Outdoor unit
Indoor unit 1 Indoor unit 2 Indoor unit 3
Outdoor unit
(Within
±10m)
(However, L
Maximum piping length for one indoor unit is 25m.
* Additional charge of refrigerant is not required.
RAM-80QH4
RAM-80QH4
Height difference between indoor units
should be not more than 5m.
Outdoor unit
Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4
Outdoor unit
(Within
±10m)
( L
Maximum piping length for one indoor unit is 25m.
* Additional charge of refrigerant is not required.
[Outdoor unit installation]
• The pipe connection ports of the outdoor unit and connectable indoor units are shown below. (Connection
of the compressors is as shown below.)
RAM-70QH4
• To the outdoor unit, up to three indoor units can be connected until the total value of each unit's
capacity from 5.0kW to 11.0kW.
ø6.35 (1/4")
One unit of 2.5kW or 3.5kW
ø9.52 (3/8")
ø6.35 (1/4")
One unit of 2.5kW, 3.5kW or
4.0kW
ø9.52 (3/8")
ø6.35 (1/4")
One unit of 2.5kW, 3.5kW, 4.0kW or 5.0kW
(5kW unit: Optional flare adaptor for piping is necessary.)
ø9.52 (3/8")
RAM-80QH4
• To the outdoor unit, up to four indoor units can be connected until the total value of each unit's capacity
reaches 12.0kW. However, install indoor units so that total capacity of Indoor unit 1 and Indoor unit 2
and total capacity of Indoor unit 3 and Indoor unit 4 are approached. For example, when two 2.5kW
units and two 3.5kW units are to be connected, connect as shown below.
• Connect 3 or more indoor units. If only two units are to be connected, connect them as Indoor unit 1
and Indoor unit 2 or Indoor unit 3 and Indoor unit 4. However, when two 3.5kW units are connected or
when one 2.5kW unit and one 4kW unit are connected, capacity may be less than indicated capacity.
ø6.35 (1/4")
One unit of 2.5kW or 3.5kW
ø9.52 (3/8")
ø6.35 (1/4")
One unit of 2.5kW, 3.5kW, 4.0kW or 5.0kW
ø9.52 (3/8")
(5kW unit: Optional flare adaptor for piping is necessary.)
ø6.35 (1/4")
One unit of 2.5kW or 3.5kW
ø9.52 (3/8")
ø6.35 (1/4")
One unit of 2.5kW, 3.5kW, 4.0kW or 5.0kW
(5kW unit: Optional flare adaptor for piping is necessary.)
ø9.52 (3/8")
Indoor unit 1 2.5kW
Total 7.0kW
Indoor unit 2 3.5kW
Install so that both total capacities are approached.
Indoor unit 3 2.5kW
Total 7.0kW
Indoor unit 4 3.5kW
NAMES OF EACH PART AND DIMENSIONS
Air outlet
Air intake
(Back, Left side)
Exhaust port (under)
MODEL WIDTH
RAM-70QH4
850mm (32-1/2")
RAM-80QH4
• Remove electric box cover and three cord bands. Then, remove side panel and front panel in sequence.
Piping length
(If side panel cannot be removed at this time, remove top cover.)
Indoor unit 1 Indoor unit 2 Indoor unit 3 200mm or more
L L L
1 2 3
L + L + L = Maximum 60m
1 2 3
+ L = Maximum 35m) 100mm or more
1 2
* 500mm or more
Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4
L 1 L L
2 L 3 4
Condensed Water Disposal of Unit
• There is a hole on the base of outdoor unit for
condensed water to exhaust.
+ L ) = ( L + L ) = Maximum 35m
1 2 3 4
• In order for condensed water to flow to the draining
part, install the unit on the level ground or block so
that the unit is 100mm above the ground same as
figure shown. Join the drain pipe to one hole and cover
the rest with bushing. If there are other holes or gaps,
cover them with putty to prevent water from leaking
out.
At first insert one portion of the hook to the base,
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
Flare adaptor for piping
base firmly.
The flare adaptor for piping is
required depending on
combination of indoor units.
• ø9.52 (3/8") → ø12.7 (1/2")
If you wish to prepare the copper tubes and insulation material in the field, we recommend the following:
parts number HFD43D-4 001
No. Material
Small dia. Deoxidized annealed copper pipe with 6.35mm O.D., 0.8mm wall thickness.
4.0kW
or less
Large dia. Deoxidized annealed copper pipe with 9.52mm O.D., 1.0mm wall thickness.
Copper
1
tube
Small dia. Deoxidized annealed copper pipe with 6.35mm O.D., 0.8mm wall thickness.
5.0kW
Large dia. Deoxidized annealed copper pipe with 12.7mm O.D., 1.0mm wall thickness.
Small dia. Flare nuts with 6.35mm O.D..
4.0kW
or less
Large dia. Flare nuts with 9.52mm O.D..
Flare
2
nut
Small dia. Flare nuts with 6.35mm O.D..
5.0kW
Large dia. Flare nuts with 12.7mm O.D..
Foamed polyethylene insulation pipe which does not corrode the copper tube.
3
Insulation for refrigerating pipe Large dia. pipe side: 15mm I.D., 8mm wall thickness.
Small dia. pipe side: 8mm I.D., 7mm wall thickness.
4 Copper wire Refer to item 2.1.
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.
2. Checking of the power source and the voltage range
2.1
Before installation, the power source must be checked and necessary wiring work must be completed.
Total capacity of 4 units:
To make the wiring capacity proper, use the wire gauges list below for the lead-in from a pole transformer
12.0kW or less
and for the wiring from a switch board of fuse box to the outlet in consideration of the locked rotor
current.
Wire length
Up to 25m
2.2
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
Connecting cord and
arrangements for the necessary electrical work etc.
insulation pipe for piping
The electrical work includes the wiring work up the
outlet.
In localities where electrical conditions are poor, use of a voltage regulation is recommended.
In relation to outdoor unit
2.3
In the electrical installation a separator with a contact gap of more than 3mm has to be installed.
• Even if operation stops, fan is running for 10 to 60
During cleaning or service the set has to be switched off with this separator.
seconds to reduce heat of electric components.
CAUTION
• When heating operation, drain or defrosted water
3. Installation procedure and notice
flows out from outdoor unit. Don't stop up drain
Especially, the selection of installation place need great care for the split type air conditioner, because
outlet portion in chilly area so as not to freeze
it is very difficult to move from place to place after the first installation.
these.
3.1 Wiring
(1) Connect the electrical wiring between the Indoor and Outdoor unit, as shown in Fig. 3-1. Never
HEIGHT DEPTH
connect the wiring by mistake.
(2) The connecting cord must be fixed by the band which is located near the terminal board.
830mm (32-11/16") 340mm (13-3/8")
WARNING
Important:
The wires in this main lead are coloured in accordance with the following code:
Dimension of Mounting
Stand of the outdoor unit
* 100mm or more
(unit: mm)
• Since power is supplied through outdoor unit, do not connect power source to indoor unit.
Mounting
Wind
stand 12
200mm or more
RAM-70QH4
Indoor unit no.1
500 150
Screw for ground, earth screw
Terminal
* Keep as far away as possible.
board
Drain hole
Connecting cord
ø1.6 or 2.0
b Bushing
Terminal board
Push Push
Screw for ground, earth screw
Drain hole
For Indoor unit No. 1
Above 100mm RAM-80QH4
b Bushing
Indoor unit no.1
Outer diameter
a Drain pipe
above 16mm Screw for ground, earth screw
Terminal
board
Specification
Connecting cord
ø1.6 or ø2.0
Terminal board
Screw for ground,
earth screw
For Indoor unit No. 1
• Please remove the side plate for wire connection.
• If you cannot attach the side plate due to the connecting cord, please press the
connecting cord in direction to the front panel to fix it.
• Be sure that the hooks of the side plate is fixed in certainly. Otherwise water
WARNING leakage may occur and this causes short circuit or faults.
• The connecting cord should not touch the service valve and pipes. (It becomes
high temperature in heating operation.)
3.2 Connection of the connecting cords and power cord
(1) Cut off the connecting cord, the power cord and strip the insulation of the wire, as shown in
Fig. 3-2.
(2) Connect the connecting cord and power cord to the terminal board. (Fig. 3-3)
(3) Fix the connecting cords and power cord with steel band certainly. (Fig. 3-3)
50mm
14mm
10mm
40mm
IMPORTANT
Detail of cutting connecting cord
Wire gauge
4.0mm 2
USE A FUSE AS FOLLOWING IMPORTANT
Fuse capacity
32A time delay fuse
• THIS APPLIANCE MUST BE EARTHED.
CAUTION
Wiring Pattern
Indoor Unit
Indoor unit no.2 Indoor unit no.3
Screw for ground, earth screw Screw for ground, earth screw
Terminal Terminal
board
board
Green-and-
Green-and- Green-and-
Yellow
Yellow Yellow
Connecting cord
Connecting cord ø1.6 or 2.0
ø1.6 or 2.0
Terminal board
Screw for ground,
earth screw
Terminal board Terminal board
Screw for ground, earth screw Screw for ground, Green-and-Yellow
earth screw
For Indoor unit No. 2 For Indoor unit No. 3
Outdoor Unit Power cord
Indoor Unit
Indoor unit no.2 Indoor unit no.3 Indoor unit no.4
Screw for ground, earth screw Screw for ground, Screw for ground, earth screw
earth screw
Terminal
Terminal Terminal
board board board
Green-and-
Green-and- Green-and- Green-and-
Yellow Yellow Yellow Yellow
Connecting cord Connecting cord
Connecting cord ø1.6 or ø2.0
ø1.6 or ø2.0 ø1.6 or ø2.0
Screw for ground, earth screw
Terminal board
Terminal board Terminal board Terminal board
Screw for ground, Screw for ground, Screw for ground, Green-and-
earth screw earth screw earth screw Yellow
For Indoor unit No. 2 For Indoor unit No. 3 For Indoor unit No. 4
Power cord
Outdoor Unit
Fig. 3-1
Green-and yellow
Green-and yellow
60mm
(ground) (ground)
14mm
10mm
50mm
Connecting cord Power cord
Detail of cutting power cord
Fig. 3-2