Hitachi airHome MultiPro RAM-G55N3HAE User manual

The Choice of Mounting Site (Please note the following matters and obtain permission from customer before installation).
Dimension of Mounting Stand
of the Outdoor unit
(unit : mm)
3
Bush
Names of Outdoor Components
QtyNo. Item
Drain Pipe
1
Bush
1
mounting stand
Figure showing the Installation of Outdoor Unit.
●This unit is chargeless up 30m pipe length.
●Installation of pipe length less than minimum pipe length
requirement (3 meters) may generate an abnormal sound.
CAUTION
●The difference in height
between the indoor and
outdoor unit should be
kept max 20m.
●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).
The connection of insulated
drain hose.
Please use insulated drain
hose for the indoor piping
(commercial product).
The indoor piping should
be insulated with the
enclosed insulation
pipe. (If the insulator is
insufficient, please use
commercial products).
Be sure to completely
seal any gap with
putty. above 100mm
above 300mm
about 400mm
must not bend
Maximum pipe length 60m Minimum pipe length 3m
above 200mm
above 100mm
give
clearance
as wide as
possible
above 100mm
above 700mm
above 200mm
inner diameter ø 16mm
!
1
2
3
This symbol shows that this equipment
uses a flammable refrigerant.
If the refrigerant is leaked, together
with an external ignition source, there
is a possibility of ignition.
This symbol shows that the Operation
Instructions should be read carefully.
This symbol shows that a service
personnel should be handling this
equipment with reference to the
Installation Manual.
This symbol shows that there is
information included in the Operation
Manual and/or Installation Manual
WARNING
CAUTION
CAUTION
CAUTION
!
BURST HAZARD
Do not allow air, etc. to
get into refrigerant cycle
(piping)
RISK OF EXPLOSION
Compressor must be
stopped before removing
refrigerant pipes.
All service valve must be
fully closed after pumping
down operation.
WARNING
Refrigerant piping
must be protected
from physical
damage. Install a
plastic cover or
equivalent.
Flare connection only at outside
of building
WARNING
!
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 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.
●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 connecting cord 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 their nests. If small animal goes inside the unit and
touches the electrical parts, failure of the unit, smoke or fire may
be caused. Request your customer to keep the surrounding of
the unit is clean.
OUTDOOR UNIT
Height difference
Height difference between indoor units should not be more than 5m.
Piping length
CAUTION
●Make sure to connect to two or more indoor units.
!
Flare adaptor for piping
The flare adaptor for piping is required depending on combination of
indoor units.
● ø9.52 (3/8”) ➝ø 12.7 (1/2”)
Parts number TA261D-4 001
● ø12.7(1/2”) ➝ø 9.52 (3/8”)
Parts number TA261D-6 002
(Within ±5m)
(L1 + L2 + L3) = Maximum 60m
Minimum piping length for each indoor unit is 3m.
Maximum piping length for one indoor unit is 25m.
In case the pipe length is more than 30m, add refrigerant R32 at 20 gram per every
meter exceeds.
One unit of 1.5kW, 1.8kW, 2.5kW, 3.5kW, 4.2kW, 5.0kW or 6.0kW
(4.2kW, 5.0kW, 6.0kW unit: Optional flare adaptor for piping is necessary.)
One unit of 1.5kW, 1.8kW, 2.5kW, 3.5kW, 4.2kW, 5.0kW or 6.0kW
(4.2kW, 5.0kW, 6.0kW unit: Optional flare adaptor for piping is necessary.)
One unit of 1.5kW, 1.8kW, 2.5kW, 3.5kW, 4.2kW, 5.0kW or 6.0kW
(4.2kW, 5.0kW, 6.0kW unit: Optional flare adaptor for piping is necessary.)
●To the outdoor unit, up to three indoor units can be connected until the total value of each
units’s capacity reaches 8.8 kW (RAM-G55N3HAE), 11.0 kW (RAM-G68N3HAE).
●The pipe connection ports of the outdoor unit and connectable indoor units are shown above.
CAUTION
!
●A circuit breaker or fuse must be installed. Without a circuit breaker or fuse the danger of electric shock exists.
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 flammable gas. The outdoor unit may catch
fire if flammable gas leaks around it.
●
Do not install the indoor unit in a machine shop or kitchen where vapor from oil or its mist flows to the indoor
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 flow of water when installing the drain hose.
●Piping shall be suitable supported with a maximum spacing of 1m between the supports.
●Do not use means to accelerate the defrosting process or to clean, other than those recommended by the
manufacturer. Any unfit method or using incompatible material may cause product damage, burst and serious
injury.
●The appliance/pipe-work shall be stored in a well ventilated room with indoor floor area larger than Amin [refer
to Table 1] and without any continuously operating ignition source. Keep away from open flames, any operating
gas appliances or any operating electric heater. Else, it may explode and cause injury or death.
●The appliance/pipe-work shall be installed, and/or operated in a room with floor area larger than Amin [refer to
Table 1] and keep away from ignition sources, such as heat/spark/open flame or hazardous areas such as gas
appliances, gas cooking, reticulated gas supply systems or electric cooking appliances, etc.
●Do not pierce or burn as the appliance/pipe-work is pressurized. Do not expose the appliance/pipe-work to heat,
flame, sparks, or other sources of ignition. Else, it may explode and cause injury or death.
WARNING
!
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 earthed.
●Power is supplied through outdoor unit, do not connect power source to indoor unit.
WARNING
!
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.
●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.
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Tools Needed For Installation Work
WARNING
!
●Carefully read through the procedures of
proper installation before starting installation
work.
●The sales agent should inform customers
regarding the correct operation of installation.
(mark is tool exclusive use for R32)
●+ – Screwdriver ●Measuring Tape
●Knife ●Saw ●Pipe Cutter
●Hexagonal Wrench Key ( 4mm)
●Power Drill (ø 65mm ~ ø 80mm)
Vacuum Pump ●Pliers or Wrench
●Torque Wrench Vacuum Pump Adaptor
●Flare Tool ●Gas Leakage Detector
Manifold Valve Charge Hose
●Reamer ●File
●Flare nut must use a torque wrench without fail. Tighten with the specified tightening
torque. If the flare nut is tightened too much, after a long period of time, the flare nut
breaks, Gas leakage, stagnation, touching fire, 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 fire, rarely cause ignition.
●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.
●A brazed, welded, or mechanical connection shall be made before opening the valves to
permit refrigerant to flow between the refrigerating system parts. A vacuum valve shall
be provided to evacuate the interconnecting pipe and/or any uncharged refrigerating
system part.
●Mechanical connectors used indoors shall comply with ISO 14903. When mechanical
connectors are reused indoors, sealing parts shall be renewed. When flared joints are
reused indoors, the flare part shall be re-fabricated.
●Refrigerant tubing shall be protected or enclosed to avoid damage.
●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 power cables
approved by the authorities of your country.
●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 units may
collapse or water leakage, electric shock and fire may occur.
●Be sure to use the specified piping set for R32. Otherwise, this may result in broken
copper pipes or faults.
●When installing or removing an air conditioner, only specified 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 into contact with fire, 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 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.
SAFETY PRECAUTION
!
!
Table 1: Minimum Floor area of the room A
min
(m
2
)
Floor-standing units
Ceiling cassette-mounted units
Duct-mounted units
Wall-mounted
units Without
SPX-RAFGLS
With
SPX-RAFGLS
Max refrigerant
charge amount
(kg)
Piping Length
(m)
Maximum
Standard
Maximum
Standard
Outdoor
Model
Minimum Floor Area of the room Amin (m2)
RAM-G68N3HAE
RAM-G55N3HAE
3.00
3.44
3.00
3.88
2.66
3.50
2.66
4.45
2.66
3.50
2.66
4.45
3.97
5.22
3.97
6.64
2.05
2.08
2.05
2.11
35
50
30
60
35.77
47.00
35.77
59.77
Gas leak sensor be setting as optional parts (SPX-RAFGLS)
<IA2327: A >
< IA2327: A >
INSTALLATION
MANUAL
SPLIT UNIT AIR CONDITIONER
OUTDOOR UNIT
RAM-G55N3HAE
RAM-G68N3HAE
EN INSTRUCTION MANUAL
FOR SERVICE
PERSONNEL ONLY
Home
MultiPro

OUTDOOR UNIT
●Please 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.
●When removing side cover, please pull the handle after undoing the
hook by pulling it downward.
1
●Use a pipe cutter to cut
the copper pipe.
●Jagged edge will cause leakage.
●Point the side to be trimmed downwards during trimming to prevent
copper chips from entering the pipe.
●Before flaring, please put on the flare nut.
2
INSTALLATION OF REFRIGERATING PIPES AND AIR REMOVAL
CAUTION
!
Please face this side (suction side)
of the unit to the wall.
Please remove side cover
when connecting the piping and
connecting cord.
Pull downward
BASE
●Recommend to use
R32 flaring tool.
CAUTION
!
In case of removing flare nut of an Indoor unit, first
remove a nut of small diameter side, or a seal cap of
big diameter side will fly out. Prevent water from entering
into the piping when working.
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.
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.
A
DRAIN PIPE
100 mm ABOVE
BUSH BUSH
DRAIN PIPE
Trimming tool
Copper pipe
Die
Die
Copper pipe
Flare nut
Torque
wrench
Wrench
Gas Leakage Inspection
Please use gas leakage detector
to check if leakage occurs at the
connection of Flare nut as shown
on the right.
If gas leakage occurs, further tighten
the connection to stop leakage. (Be
sure to use R32 detector)
3
When the meter reaches - 101KPa
(-76cmHg) during pumping, fully tighten
the shuttle.
Closed
R32
Valve
Charge hose
Vacuum
pump
adapter
When pumping starts, slightly loosen
the flare nut to check of air sucked in.
Then tighten the flare nut.
Vacuum
pump
Manifold valve
Meter showing pressure
Valve
Cap of valve head
Cap of valve head
The body of
service valve
Hexagonal
Wrench Key
Cap of valve
core
Outer
Diameter
mm (inch)
6.35 (1/4")
9.52 (3/8")
12.70 (1/2")
1.0 ~ 1.5
1.0 ~ 1.5
1.0 ~ 1.5
Clutch type
A (mm)
1.5 ~ 2.0
1.5 ~ 2.0
1.5 ~ 2.5
Wing nut type
Thickness
(mm)
0.8
0.8
0.8
0.0 ~0.5
0.0 ~0.5
0.0 ~0.5
Flare tool for R32
Clutch type
Conventional flare tool
●Prevent moisture from entering pipe connection.
●Refrigerating machine oil not be applied to the
outside of the flare.
When refrigerating machine oil is applied to the
outside of the flare, excessive tightening of the
flare nut, cracking of the flare nut, destruction of
the flare and gas leakage may occur.
●When using the control valve, do not use
deteriorated packing. And, do not overtighten the
steering wheel.
Gas leakage from the service valve part, stagnation,
touching fire, rarely cause ignition.
CAUTION
CONNECTION OF POWER CORD
Procedures of Wiring
●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.
●Be sure to use only wire specified for the use of air-conditioner.
●Please refer to the manual for wire connection and the wiring technique should meet the standard of the electrical installation.
●There is an AC voltage drop between the LN terminal if the power is on. Therefore, be sure to remove the plug from its socket.
WARNING
!
WARNING
!
●Leave some space in the connecting
cord for maintenance purpose and
be sure to secure it with the cord
band.
●Secure the connecting cord along
the coated part of the wire using the
cord band. Do not exert pressure
on the wire as this may cause
overheating or fire.
Wiring of The Outdoor Unit
●Please remove the side cover for wire connection.
WARNING
!
●If you cannot attach the side cover due to the connection cord, please press the connecting cord in the
direction to the front panel to fix it.
●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.
●The connecting cord should not touch to service valve and pipes. (It becomes high temperature in heating
operation.)
●Before installation, the power source must be checked and necessary wiring work must be completed. To make the wiring
capacity proper, use the wire gauge list below for the wiring from house distribution fuse box to the outdoor unit in consideration
of the locked rotor current.
●Investigate the power supply capacity and other electrical conditions at the installing 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 outdoor unit . In localities where electrical conditions are poor, use of a
voltage regulation is recommended.
●Install outdoor for the room air conditioner within the reaching range of the line cord.
!
WARNING
Checking for the electric source and the voltage range
Fig. 1-2
Circuit Breaker
20A
Arrange power cord so they do
not touch service valve.
Bind connecting cords to make
them fit between the convex
sections.
Grounding rod (optional)
(Earth wire and grounding rod are not supplied. Please use optional items below.)
Earth line
IMPORTANT
Type of grounding rod
SP-EB-2
Length
900mm
CAUTION
!
WARNING
●Connect the Connecting Cord to “Indoor 1 (1, 2, 3) for indoor unit 1,
“Indoor 2 (1, 2, 3) for indoor unit 2, “Indoor 3 (1, 2, 3) for indoor 3.
!
Fig. 1-3
Note:
●Outdoor supply cords shall not
be lighter than polychloroprene
sheathed flexible cord with code
designation 60245 IEC 57.
!
CAUTION
Cable type
3 Core
Cable type
4 Core
Cable length
up to 25m
Wire cross-section
2.5mm2
Wire cross-section
1.5mm2
IMPORTANT
For (Power cord - L, N, Earth)
For (Connecting cord - 1, 2, 3, Earth)
!
●THIS APPLIANCE MUST BE EARTHED.
Fig. 1-1
Indoor earth wire connection to outdoor
Method 1 (Separate)
From Indoor 1 From Indoor 1From Indoor 2
Screw for ground at outdoor unit Screw for ground at outdoor unit
From Indoor 2
Method 2 (Combine)
Both method of earth wire connection are acceptable.
Please ensure the wire fixed firmly to the screw.
Outer
dia.of pipe
6.35 (1/4")
9.52 (3/8")
12.70 (1/2")
6.35 (1/4")
9.52 (3/8")
12.7 (1/2")
6.35 (1/4”)
9.52 (3/8”)
12.7 (1/2”)
15.87 (5/8”)
Spindle
Valve
head cap
Torque N·m
(kgf
·
cm)
14.0 – 18.0 (140 ~ 180)
33.0 – 42.0 (330 ~ 420)
50.0 – 62.0 (500 ~ 620)
19.6 – 24.5 (200 ~ 250)
19.6 – 24.5 (200 ~ 250)
29.4 – 34.3 (300 ~ 350)
12.3 – 15.7 (125 ~ 160)
3.92~5.88 (40~60)
9.80~10.78 (100~110)
Small dia. side
Large dia. side
Valve core cap
Small dia. side
Large dia. side
Small dia. side
Large dia. side
FINAL STAGE OF INSTALLATION
Insulation And Maintenance Of Pipe Connection
●The connected terminals should be completely sealed with heat insulator
and then tied up with rubber strap.
●Please tie the pipe and power line together with vinyl tape as shown in the
figure showing the installation of Indoor and Outdoor units. Then fix their
position with holders.
●To enchance the heat insulation and to prevent water condensation, please
cover the outdoor part of the drain hose and pipe with insulation pipe.
●Completely seal any gap with putty.
1
Insulation material for pipe connection
Putty
Putty
Sleeve of
protection pipe
Power Source And Operation Test
2
Power Source
WARNING
●Never remodel the power plug nor extend the long-distance
cord.
●Keep additional length for the power cord and do not render
the plug under external force as this may cause poor contact.
●Do not fix the power cord with U-shape nail.
●The power cable easily generates heat. Do not bring the cable
together with a wire or vinyl tie.
Operation Test
!
CAUTION
●Don't operate for over 5 minutes with the
situation that the spindle of the service
valve is closed. This will cause the defect.
●Don't operate by Cool Mode or Dry Mode
with the door and windows opened, (the
room humidity is always above 80%) for
a long period of time. Water will condense
and drip down occasionally. This will wet
your furniture.
●Explain to your customer the proper operation
procedures as described in the user' s manual.
●If the indoor unit won't operate, check the
cable for correct connection.
●Turn on the lamp in the room where the
indoor unit is installed and check the remote
controller for normal operation.
3. Operate the air conditioner for 20 minutes at least
and make sure that the air from the air conditioner
is cool or warm.
4. Press the ON/Off button on the remote controller
to make sure that the air conditioner stops running.
●If the indication lamps of the indoor unit blink with
sounding the buzzar during the operation test, perform
a check following the procedures below.
●Before the check and the reoperation, reset the power
supply by turning off and on the circuit breaker only
after:-
1. waiting for at least 5 mintes; or
2. pressing the Temporary Switch Button only once
while the power is OFF.
Indication lamps
blinking mode What do check
All indication lamps
blink three times
repeatedly.
Make sure that the spindles of
both service valves are open.
(Outdoor fan might operate
for near 15 minutes after the
operation stop for the protection.
For the reoperation at that case,
do it after outdoor fan will stop.)
●Please be sure to measure the supply voltage before operation
test.
●Please ensure that the air conditioner is in normal operating condition
during the operation test.
1. Operate with Cool Mode(in summer) or Heat Mode(in winter).
2. Press Temperature Button on the remote controller to set the
desired temperature to 16.0°C for Cool Mode or 32.0°C for
Heating Mode.
Set the desired fan speed to " "(High).
CAUTION
●Trial run should be conducted on one unit
at a time to check for incorrect wiring of
connecting cord.
!
!
<IA2327: A >
Detail of Cutting the Connecting Cord
1. 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.
1.1 Wiring
(1) Connect the electrical wiring between the
Indoor and Outdoor unit, as shown in
Fig. 1-1. 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.
1.2 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. 1-2.
(2) Connect the connecting cord and power
cord to the terminal board. (Fig. 1-3)
(3) Fix the connecting cords and power cord
with steel band certainly. (Fig. 1-3)
Preparation of Pipe
Pipe Connection
Removal Of Air From The Pipe And Gas Leakage Inspection
AIR REMOVAL
Procedures of using Vacuum Pump
for Air Removal
As shown in right figure, remove the cap of
valve core. Then, connect the charge hose.
Remove the cap of valve head. Connect the
vacuum pump adapter to the vacuum pump
and connect the charge hose to the adapter.
Fully tighten the “Hi” knob of the manifold
valve and completely unscrew the “Lo” knob.
Run the vacuum pump for about 10~15
minutes, then completely tighten the “Lo” knob
and switch off the vacuum pump.
2
Completely unscrew the spindle of the
service valve in anti-clockwise direction to
allow the flow of refrigerant (using Hexagonal
Wrench key).
Re-cap the service valve and tighten using
wrench. Check the cap’s periphery if there is
any gas leakage. The task is then completed.
Remove the charge hose and tighten the cap
of valve core. Check the cap’s periphery if
there is any gas leakage.
4
5
1
3