Hitachi RAM-SJ24H3NK Instruction Manual

INSTALLATION
Flare nut must use a torque wrench without fail. Tighten with the specifi ed tightening torque.
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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
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from the crushed part, stagnation, touching fi re, rarely cause ignition.
Please request your sales agent or qualifi ed technician to install your unit. Water leakage, short
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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.
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SPLIT UNIT AIR CONDITIONER
Improper installation may cause water leakage, electric shock and fi re.
A brazed, welded, or mechanical connection shall be made before opening the valves to permit
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OUTDOOR UNIT
refrigerant to fl ow between the refrigerating system parts. A vacuum valve shall be provided to
RAM-SJ24H3NK evacuate the interconnecting pipe and/or any uncharged refrigerating system part.
Mechanical connectors used indoors shall comply with ISO 14903. When mechanical connectors
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are reused indoors, sealing parts shall be renewed. When fl ared joints are reused indoors, the
EN INSTRUCTION MANUAL
fl are part shall be re-fabricated.
Refrigerant tubing shall be protected or enclosed to avoid damage.
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Make sure that the units are mounted at locations which are able to provide full support to the
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weight of the units. If not, the units may collapse and impose danger.
FOR SERVICE
Observe the rules and regulations of the electrical installation and the methods described in
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PERSONNEL ONLY
the installation manual when dealing with the electrical work. Use power cables approved by
the authorities of your country.
Be sure to use specifi ed circuit. A short circuit and fi re may occur due to the use of low quality
wire or improper work.
● 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.
Improper insertion and loose contact may cause over-heating and fi re.
Please use the specifi ed components for installation work. Otherwise, the units may collapse
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or water leakage, electric shock and fi re may occur.
Be sure to use the specifi ed piping set for R410A. Otherwise, this may result in broken copper
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● Carefully read through the procedures of
pipes or faults.
proper installation before starting installation
work. When installing or removing an air conditioner, only specifi ed refrigerant (R410A) shall be
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The sales agent should inform customers allowed, do not allow air or moisture to remain in the refrigeration cycle. Otherwise, pressure
regarding the correct operation of installation. 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
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into contact with fi re, a poisonous gas may occur. Be aware that refrigerants may not contain
Tools Needed For Installation Work
an odour.
+ –
● Screwdriver ● Measuring Tape
After completion of installation work, check to make sure that there is no refrigeration gas
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● Knife ● Saw ● Pipe Cutter
leakage. If the refrigerant gas leaks into the room, coming into contact with fi re in the fan-driven
● Hexagonal Wrench Key ( 4mm) heater, space heater, etc., a poisonous gas may occur.
● ● Unauthorized modifi cations to the air conditioner may be dangerous. If a breakdown occurs
Power Drill (ø65mm ~ ø80mm)
please call a qualifi ed air conditioner technician or electrician. Improper repairs may result in
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Vacuum Pump
water leakage, electric shock and fi re, etc.
● Pliers or Wrench ● Torque Wrench
Be sure to install a ground fault circuit interrupter. Failure to install a ground fault circuit interrupt
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● Vacuum Pump Adaptor ● Flare Tool
may result in electrical shocks, or fi re.
● Gas Leakage Detector ● Manifold Valve
If you need to add refrigerant, please contact your local distributor.
●
● Charge Hose ● 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.
Make sure to connect earth wire.
This sign in the fi gures 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.
< IA2222: A >
CAUTION
!
A circuit breaker or fuse must be installed. Without a circuit breaker or fuse the danger of electric shock exists.
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The external switch shall be incorporated to completely disconnect from power supply. It should disconnect all
poles, and a contact separation of at least 3mm must be present.
Do not install the unit near a location where there is fl ammable gas. The outdoor unit may catch
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fi re if fl ammable gas leaks around it.
Do not install the indoor unit in a machine shop or kitchen where vapor from oil or its mist fl ows to the indoor
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unit. The oil will deposit on the heat exchanger, thereby reducing the indoor unit performance and may deform
and in the worst case, break the plastic parts of the indoor unit.
Please ensure smooth fl ow of water when installing the drain hose.
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Piping shall be suitable supported with a maximum spacing of 1m between the supports.
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In order to avoid a hazard due to inadvertent resetting of the THERMAL CUT-OUT, this appliance must not be
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supplied through an external switching device,such as timer or connected to a circuit that is regularly switched
on and off by the utility.
!
Do not use means to accelerate the defrosting process or to clean, other than those recommended by the
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manufacturer. Any unfi t method or using incompatible material may cause product damage, burst and serious
injury.
Do not pierce or burn as the appliance/pipe-work is pressurized. Do not expose the appliance/pipe-work to heat,
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fl ame, sparks, or other sources of ignition. Else, it may explode and cause injury or death.
!
This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental
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capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction
concerning use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.
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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.
This appliance must be grounded.
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! WARNING
Power is supplied through outdoor unit, do not connect power source to indoor unit.
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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.
< >
IA2222: A
WARNING
!
WARNING
WARNING
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,
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ventilation must be good and clear of obstruction.
The air blown out of the unit should not point directly to animals
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or plants.
The clearances of the unit from top, left, right and front are
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specifi ed in fi gure below. At least 3 of the above sides must be
open air.
Be sure that the hot air blown out of the unit and noise do not
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disturb the neighbourhood.
Do not install at a location where there is fl ammable gas, steam,
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oil and smoke.
The location must be convenient for water drainage.
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Place the Outdoor unit and its connecting cord at least 1m away
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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
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damage the fan motor.
● Do not install the outdoor unit in a place where small animals
may build 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.
WARNING
!
BURST HAZARD
Be sure to completely
Do not allow air, etc. to get into
seal any gap with
refrigerant cycle (piping)
putty.
RISK OF EXPLOSION
Compressor must be stopped
before removing refrigerant pipes.
All service valve must be fully
closed after pumping down
operation.
Refrigerant piping
must be protected
from physical
damage. Install a
plastic cover or
equivalent.
above 200mm
above 100mm
above 200mm
Height difference between indoor units should not be more than 5m
(L1 + L2 + L3) = Maximum 60m
Minimum piping length for each indoor unit is 5m.
Maximum piping length for one indoor unit is 25m.
In case the pipe length is more than 30m, add refrigerant R410A at 12 gram
To the outdoor unit, up to three indoor units can be connected until the total value of each
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units's capacity reaches 10.5kW.
The pipe connection ports of the outdoor unit and connectable indoor units are shown above.
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CAUTION
!
Make sure to connect to two or three
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indoor units.
Names of Outdoor Components
No. Item Qty
Dimension of Mounting Stand
of the Outdoor unit
Bush
3
(unit : mm)
1
mounting stand
Drain Pipe
1
2
Bush
1
3
Figure showing the Installation of Outdoor Unit.
CAUTION
!
The Outdoor unit is charged with refrigerant for pipe length
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up to 30m.
In case the pipe length is more than recommended length,
add refrigerant R410A as below.
Do not exceed the maximum pipe length.
Installation of pipe length less than minimum pipe length
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requirement 5m may generate an abnormal sound.
WARNING
!
above 100mm Flare connection only at outside
of building
The indoor piping should
be insulated with the
enclosed insulation
pipe. (If the insulator is
insuffi cient, please use
commercial products).
The difference in height
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between the indoor and
outdoor unit should be
kept max 20m.
The connecting pipe,
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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
above 100mm wrapped with tape).
give
clearance
The connection of insulated
as wide as
drain hose.
possible
inner diameter ø16mm
Please use insulated drain
hose for the indoor piping
above 200mm
(commercial product).
Height difference
5m
(Within ± 20m)
Piping length
per every meter exceeds.
One unit of 2.0kW, 2.5kW, 3.5kW or 5.0kW
(5.0kW unit: Optional fl are adaptor for piping is necessary.)
One unit of 2.0kW, 2.5kW, 3.5kW or 5.0kW
(5.0kW unit: Optional fl are adaptor for piping is necessary.)
One unit of 2.0kW, 2.5kW, 3.5kW or 5.0kW
(5.0kW unit: Optional fl are adaptor for piping is necessary.)
Flare adaptor for piping
The fl are adaptor for piping is required depending on combination of
indoor units.
ø9.52 (3/8") ➝ ø 12.7 (1/2")
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Parts number TA261D-4 001
ø12.7(1/2") ➝ ø 9.52 (3/8")
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Parts number TA261D-6 002