Hitachi airHome Multi Pro RAM-G110N5HAE Instruction Manual

WARNING
INSTALLATION • 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 installation stated in the installation manual during the process of
MANUAL
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 cables which are approved
official in your country. Be sure to use the specified circuit. A short circuit andfire may occur
due to the use of low quality wire or improper work.
• Be sure to use the specified cables for connecting the indoor and outdoor units. Please
Multi Pro
ensure that the connections are tight after the conductors of the wire are inserted into
the terminals to prevent the external force is being applied to the connection section of
theterminal base. Improper insertion and loose contact may cause over-heating and fire.
• Please use the specified components for installation work. Otherwise, the unit may collapse
SPLIT UNIT AIR CONDITIONER
or water leakage, electric shock, fire or stronger vibration may occur.
• Be sure to use the specified piping set for R32. Otherwise, this may result in broken copper
pipes or faults.
OUTDOOR UNIT
• When installing or transferring an air conditioner to another location, make sure that air other
RAM-G110N5HAE
than the specified refrigerant (R32) does not enter the refrigeration cycle. If other air should
enter, the pressure level of the refrigeration cycle may increase abnormallywhich could result
in a rupture and injury.
EN INSTRUCTION MANUAL
• Never install a drier to this R32 unit in order to guarantee its lifetime.
FOR SERVICE • 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.
PERSONNEL ONLY
• After completion of installation work, check to make sure that there is no refrigeration gas
leakage. If the refrigerant gas leaks into theroom, 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
• Carefully read through the
please call a qualified air conditioner technician or electrician. Improper repairs may result in
procedures of proper installation water leakage, electric shock and fire, etc.
• Be sure to connect the earth line from the power supply wire to the outdoor unit and
before starting installation work.
between the outdoor and indoor unit. Do not connect the earth line to the gas tube,
• The sales agent should inform
water pipe, lighting rod or the earth line of thetelephone unit. Improper earthing may
customers regarding the correct cause electric shocks.
operation of installation.
Tools Needed For Installation Work
( 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
Access the full version of the
Leakage Detector Manifold Valve Charge Hose ● Reamer ● File User Installation Manual by
Cooling & Heating
EE0021647B rev.0-10/2023
WARNING
• When finishing the refrigerant collection (pumping down), stop the compressor and then remove the coolant pipe.
If you remove the refrigerant pipe while the compressor is operating and the service valve is released, air is sucked and apressure in
the freezing cycle system will build up steeply, causing an explosion or injury.
• When installing the unit, be sure to install the refrigerant pipe before starting the compressor.
If the refrigerant pipe is not installed and the compressor is operated with the service valve released, air is sucked and thepressure
level of the refrigeration cycle may increase abnormally which could result in a rupture and injury.
• The electric cables should neither be reworked nor added. Make sure to use an exclusive circuit breaker. Otherwise fire or electric
shock might occur by connection failure, isolation failure or over current.
• Make sure to connect cables to terminal properly and terminal cover should close firmly.
Otherwise, over heating at terminal contact, fire or electric shock might occur.
• Make sure that there is no dust on any connected points of electric cables and fix firmly.
Otherwise, fire or electric shock might occur.
SAFETY PRECAUTION
Read the safety precautions carefully before operating the unit. This appliance is filled with R32.
● 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 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.
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. Improper installing may wet your furniture.
● Piping shall be suitable supported with a maximum spacing of 1m between the supports.
WARNING
● 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 A
min
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 A [refer to Table
min
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.
REFRIGERANT INFORMATION OPERATING RANGE
Refrigerant Operation
Cooling /
MODEL GWP tCO2eq.
(kg)
mode
Dehumidifying
RAM- Outdoor
675 1.836 -10 to 46°C -15 to 24°C
R32:2.720
G110N5HAE temperature
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.
WARNING
● 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.
The Choice of Mounting Site
(Please note the following matters and obtain permission from customer before installation).
Names of Outdoor Components
WARNING
● The Outdoor unit must be mounted at a location which can support
No. Item
heavy weight. Otherwise, noise and vibration will increase.
Bush
CAUTION
1
● 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 Drain Pipe
plants. 2
● 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 Figure showing the Installation of Outdoor Unit.
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
● This unit is chargeless up 30m pipe length.
build their nests. If small animal goes inside the unit and touches
● Installation of pipe length less than minimum pipe length
the electrical parts, failure of the unit, smoke or fire may be caused.
requirement (3 meters) may generate an abnormal sound.
Request your customer to keep the surrounding of the unit is clean.
Table 1: Minimum Floor area of the room A (m
min
WARNING
Minimun Floor Area of the room
This symbol shows that this
equipment uses a flammable
Max RAK-DJ**QHAE
Max
refrigerant.
refrigerant RAK-DJ**RHAE
Outdoor Piping RAI-
charge RAK-VJ**QHAE
If the refrigerant is leaked, together
Model Length
RAK-VJ**RHAE VJ**QHAE
amount
with an external ignition source, there
(m) RAK-XJ**QHAE RAI-
(kg)
is a possibility of ignition.
RAK-XJ**RHAE VJ**RHAE
RAK-XJ**QHBE
RAK-XJ**RHBE
CAUTION
30 2.720 6.89 4.61
RAM-
G110N5HAE
This symbol shows that the
75 3.300 10.30 6.89
Operation Instructions should be
scanning the code.
** is refering to indoor model name.
read carefully.
WARNING
CAUTION
This symbol shows that a service BURST HAZARD
Do not allow air, etc. to
personnel should be handling this
equipment with reference to the get into refrigerant cycle
Installation Manual. (piping)
RISK OF EXPLOSION
CAUTION Compressor must be
stopped before removing above 100mm
This symbol shows that there
refrigerant pipes. All
is information included in the
service valve must be fully
Operation Manual and/or
closed after pumping down
Installation Manual
operation.
above 700mm
Height difference
Indoor unit 1
Height difference between indoor units should not be
more than 5m.
Outdoor unit
Indoor unit 3 Indoor unit 4 Indoor unit 5
Indoor unit 2
Indoor unit 1 5m
Outdoor unit
(Within ± 20m)
(L1 + L2 + L3 + L4 + L5) = Maximum 75m
Minimum piping length for each indoor unit is 3m.
Maximum piping length for one indoor unit is 25m.
ln case the pipe length is more than 30m, add refrigerant
R32 at 13 gram per every meter exceeds
[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.
● When removing side plate, pull the handle after releasing the hook by pulling it downward.
Please face this side (suction side) of
the unit to the wall.
Please remove side cover
when connecting the piping and
connecting cord.
Pull upward
GAS
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
(70mm) ABOVE
DRAIN PIPE
[refer to
1 BUSH
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.
CAUTION
Heating
Do not use this valve. For factory use only.
6.35(1/4 )
One unit of 1.5kW, 1.8kW, 2.5kW, 3.5kW or 4.2kW, 5.0kW, 6.0kW, 7.0kW
9.52(3/8 )
(4.2kW-7.0kW unit: Optional flare adaptor for piping is necessary.)
6.35(1/4 )
One unit of 1.5kW, 1.8kW, 2.5kW, 3.5kW or 4.2kW, 5.0kW, 6.0kW, 7.0kW
9.52(3/8 )
(4.2kW-7.0kW unit: Optional flare adaptor for piping is necessary.)
6.35(1/4 )
One unit of 1.5kW, 1.8kW, 2.5kW, 3.5kW or 4.2kW, 5.0kW, 6.0kW, 7.0kW
9.52(3/8 )
(4.2kW-7.0kW unit: Optional flare adaptor for piping is necessary.)
6.35(1/4 )
One unit of 1.5kW, 1.8kW, 2.5kW, 3.5kW or 4.2kW, 5.0kW, 6.0kW, 7.0kW
12.7(1/2 )
(1.5kW-3.5kW unit: Optional flare adaptor for piping is necessary.)
6.35(1/4 )
One unit of 1.5kW, 1.8kW, 2.5kW, 3.5kW or 4.2kW, 5.0kW, 6.0kW, 7.0kW
12.7(1/2 )
(1.5kW-3.5kW unit: Optional flare adaptor for piping is necessary.)
● To the outdoor unit, up to five indoor units can be connected until the total value of each units's capacity reaches
16.6 kW.
● The pipe connection ports of the outdoor unit and connectable indoor units are shown above.
- 1 -
1 Preparation of Pipe
● Use a pipe cutter to cut
Qty Dimension of Mounting Stand
the copper pipe.
of the Outdoor unit
(unit : mm)
2
48
CAUTION
● Jagged edge will cause leakage.
1
● Point the side to be trimmed downwards during trimming to prevent
10
copper chips from entering the pipe.
600
175
● Before flaring, please put on the flare nut.
Die
Die
Copper pipe
CAUTION
Outer
Thickness
Diameter
Flare tool for R32
(mm)
mm (inch) Clutch type
6.35 (1/4") 0.8 0.0 ~ 0.5
~
9.52 (3/8") 0.8 0.0 0.5
2 )
12.70 (1/2") 0.8 0.0 ~ 0.5
~
15.88 (5/8") 1.0 0.0 0.5
Amin (m 2 )
RAF-XJ**QHAE
2 Pipe Connection
RAD-
RAF-XJ**RHAE
VJ**QHAE
RAD-
Without With In case of removing flare nut of an Indoor unit, first
VJ**RHAE
SPX-RAFGLS-N SPX-RAFGLS-N
RAD- remove a nut of small diameter side, or a seal cap of big
(gas leak sensor) (gas leak sensor)
DJ**QHAE
diameter side will fly out. Prevent water from entering into
CAUTION
the piping when working.
4.61 62.04 5.33
6.89 92.68 6.51
Small dia. side
Flare nut
above 700mm
Large dia. side
Small dia. side
Valve
above 200mm
head cap
Large dia. side
give clearance Torque
as wide as
wrench
Valve core cap
possible Wrench
Small dia. side
Spindle
Large dia. side
above 400mm
WARNING ● THIS APPLIANCE MUST BE EARTHED.
Procedures of Wiring
1. Installation procedure and notice
Piping length
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.
Indoor unit 2 Indoor unit 3 Indoor unit 4 Indoor unit 5
1.1 Wiring
(1) Those terminal blocks for connecting the indoor and outdoor cables should be installed starting from the righthand side, in a
sequence of 1, 2, 3, 4, 5; in accordance with the units' numbering system, as illustrated in the diagram. The left hand-most
L1 L2 L3 L4 L5
terminal block is for the power supply connection use.
(2) 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.
(3) 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. 1-3-2)
(3) Fix the connecting cords and power cord with steel band certainly. (Fig. 1-3-2)
Indoor unit No.5
Earth screw
Terminal
board
Green &
Connecting
Yellow
cord 1.5mm 2
Terminal board
Power cord
Terminal board
4.0mm 2 Earth
screw For Indoor unit No.5
Green &
Yellow
AC 220-240V 1ø 50Hz
Detail of Cutting the Connecting Cord
Green & Yellow
80mm
(ground wire)
10mm
10mm
60mm
Power cord
Detail of stripping the power cable
Green & Yellow
(ground wire)
10mm
100mm
Connecting cable
Detail of stripping the connecting cable
for indoor outdoor connection
2
DRAIN PIPE
Fig. 1-2
1 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.
Insulation material for pipe connection
Flare adaptor for piping
The flare adaptor for piping is required
depending on combination of indoor units.
Sleeve of
● ø3/8"(ø9.52) → ø1/2"(ø12.7)
protection pipe
Parts number TA261D-4-001
Putty
● ø1/2"(ø12.7) → ø3/8"(ø9.52)
Parts number TA261D-6-002
● ø1/2"(ø12.7) → ø5/8"(ø15.88)
Parts number TA261D-7-003
Putty
2 Power Source And Operation Test
Power Source
3 Removal Of Air From The Pipe And Gas Leakage Inspection
This system integrates 5 sub-systems of piping with 1 pair of service valves installed. That pair will be used for air purging and pumping
Trimming tool
down operations. Furthermore, due to valves are not installed to cover up the connecting mouths, there is a need for all unutilized connecting
mouths to be tightly covered up by seal caps and flared nuts.
Copper pipe
CAUTION: Should all unutilized connecting mouths are not tightly covered up by seal caps and flared nuts, there will be potential gas
leaks occurring.
1. Air purging by using vacuum pump
Remove the valve cap from the service valves located at both the large and small pipe rims.
After removing the valve cap of the valve core of the service valves located at the large pipe rim, connect the charging hose A.
After connecting the vacuum suction pump adaptor, connect the charging hose B to the adaptor.
● Recommend to use
During relocation or at any one time when the air conditioner unit is removed and re-installed, there is a possibility of getting a
R32 flaring tool. closed electric-powered valve. Should the electric-powered valve be closed, even with air purging being conducted, certain amount
of air is still trapped within that area, hence, there is a need to open up the electric-powered valve to do an air purging. Under such
circumstances, before using the vacuum-suction pump, the main power supply (LN terminal) should be connected to enable a
complete opening up of the valve. After connecting the power supply for approximately 90 seconds, the valve will be fully opened
A (mm)
up, after which disconnect the power supply and start using the vacuum suction pump.
Conventional flare tool
(Refer to "Power Supply Terminal Connections" in regards to the LN terminal)
CAUTION: Ingress of air during the operating cycle may cause increase in pressure and other breakdowns.
Clutch type Wing nut type
1.0 ~ 1.5 1.5 ~ 2.0
Switch off the outdoor unit's power supply
1.0 ~ 1.5 1.5 ~ 2.0
1.0 ~ 1.5 1.5 ~ 2.5
Shutting off via the manifold valve handle " Hi ", the handle " Lo" will open up and operate the vacuum pump that will run a
1.0 ~ 1.5 1.5 ~ 2.5 vacuum suction for approximately 60 minutes.
Upon a full shut off via the manifold valve handle " Lo", the vacuum pump will stop operating.
Check to ensure that there is no gas leakage.
After removing the charging hose A, rotate the service valve spindles (2 units on both sides) in an anti-clockwise
direction to fully open up.
Outer Torque N·m Reinstall the cap nuts to their original positions and tighten them to their specified torque values.
dia.of pipe (kgf · cm)
6.35 (1/4") 14.0 – 18.0 (140 ~ 180)
Disconnect the charge hose from the service valve.
9.52 (3/8") 33.0 – 42.0 (330 ~ 420)
12.70 (1/2") 50.0 – 62.0 (500 ~ 620)
Tighten the valve cap of valve core.
6.35 (1/4") 19.6 – 24.5 (200 ~ 250)
[Torque 12.3 - 15.7 N·m (125 - 160 kgf·cm)]
9.52 (3/8") 19.6 – 24.5 (200 ~ 250)
12.7 (1/2") 29.4 – 34.3 (300 ~ 350)
Attach the valve cap to the spindles of each large and small dia. pipe side service valves.
12.3 – 15.7 (125 ~ 160)
6.35 (1/4")
3.92 ~ 5.88 (40 ~ 60)
9.52 (3/8")
Tighten the valve cap of the spindle.
[Torque 19.6 - 24.5 N·m (200 - 250 kgf·cm)]
12.7 (1/2")
9.80 ~ 10.78 (100 ~ 110)
15.88 (5/8")
Wiring of The Outdoor Unit
● Please remove the side cover for wire connection.
● 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.
● Be sure that the hooks of the side cover is fixed in certainly. Otherwise water leakage may occur and this
WARNING causes short circuit or faults.
● The connecting cord should not touch to service valve and pipes. (It becomes high temperature in heating
operation.)
Checking for the electric source and the voltage range
● Before installation, the power source must be checked and necessary wiring work must be completed. To make the wiring
capacity proper, 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.
● Do not connect wrongly at terminal "1 2 3" of indoor and outdoor unit.
To avoid misconnection, please refer attached terminal label as shown in Fig. 1-3-1.
● To avoid connecting cord scratch or clamp by side cover, it must be fix by band as shown in Fig. 1-3-2.
IMPORTANT
Wiring Pattern FOR(Power cord-L,N,Earth)
Indoor unit No.4 Indoor unit No.3 Indoor unit No.2 Indoor unit No.1 Model Wire cross-section
Earth screw Earth screw Earth screw Earth screw
RAM-G110N5HAE
Terminal Terminal Terminal Terminal
board board board board
FOR(Connecting cord-1,2,3,Earth)
Green & Green & Green & Green & Model
Connecting Connecting Connecting Connecting
Yellow Yellow Yellow Yellow
cord 1.5mm
cord 1.5mm 2 cord 1.5mm 2 cord 1.5mm 2 2
RAM-G110N5HAE
Bind connecting cords to make them fit
Terminal board Earth Earth Terminal board Earth between the convex sections.
Terminal board Terminal board
screw screw screw
For Indoor unit No.4 For Indoor unit No.3 For Indoor unit No.2 For Indoor unit No.1
Outdoor Unit
Fig. 1-1
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.
WARNING Grounding rod (optional)
(Earth wire and grounding rod
● The naked part of the wire core should be 10 mm and fix it to the are not supplied. Please use
terminal tightly. Then try to pull the individual wire to check if the contact
optional items below.)
is tight. Improper insertion may burn the terminal.
● Investigate the power supply capacity and other electrical
● Be sure to use only wire specified for the use of air-conditioner.
conditions at the installation location.
● Please refer to the manual for wire connection and the wiring technique
Depending on the model of room air conditioner to be
should meet the standard of the electrical installation.
installed, request the customer to make arrangements for
● There is an AC voltage drop between the LN terminal if the power is on.
the necessary electrical work etc.
Therefore, be sure to remove the plug from its socket.
The electrical work includes the wiring work up the outlet.
In localities where electrical conditions are poor, use of a
voltage regulator is recommended.
4. Press On/Off Button on the remote controller and make sure that the air conditioner stops the operation.
CAUTION
If the indication lamps of the indoor unit flash with sounding of the buzzer during the operation test, perform a check
● Please use a new socket. Accident may occur due to the use of old
following the procedures below.
socket because of poor contact.
Indication lamps flashing mode
● Please plug in and then remove the plug for 2 – 3 times.
This is to ensure that the plug is completely plugged into the socket.
All indication lamps flash three times
● Keep additional length for the power cord and do not render the plug
repeatedly.
under external force as this may cause poor contact.
lamp is not flash.)
● Do not fix the power cord with U-shape nail.
● Before the check and the reoperation, reset the power supply by turning off and on the circuit breaker only after.
● waiting for at least 5 mintes; or
Operation Test
● pressing the Temporary Switch Button only once while the power is OFF.
● Please ensure that the air conditioner is in normal operating condition
during the operation test.
Pump Down Method When Reuse
● Explain to your customer the proper operation procedures as described
Existing Piping (R410A Model) for
in the user's manual.
● During test operation, each unit must be operated separately and R32 Model
ensure normal operation.
● Compressor oil of R410A model is insoluble
● If the indoor unit does not operate, check to see that the connections
in compressor oil of R32 model. The mixing of
are correct.
compressor oil may cause damage of compressor.
Please be sure to measure the supply voltage before operation test.
1. Operate with Cooling Mode(in summer) or Heating Mode(in winter).
2. Press Temperature Button on the remote controller to set the desired Possibility of Mixing
temperature to 16.0°C for Cooling Mode or 32.0°C for Heating Mode.
● Reuse of piping of R410A model is dangerous
Set the desired fan speed to " " (High). because of its compressor oil.
3. Operate the air conditioner for 20 minutes at least and make sure that
● When reuse piping of R410A model, pump down
the air from the air conditioner is cool or warm.
must be carried out properly to ensure compressor
oil which is remained inside piping is collected
away.
- 2 -
Air purging by vacuum pump
When the meter reaches -101KPa (-76cmHg) during
pumping, fully tighten the shuttle.
Meter showing pressure
R32
Manifold valve Closed
Charge hose A Charge hose B
Vacuum pump
Stop valve Stop
valve
Vacuum pump adapter
Be sure the stop valve is always fully opened.
Valve cap
Valve cap of
Stopper
O-Ring valve core
Pipe
Valve core
Seal cap
Pipe
Flare nut
Spindle
The refrigerant channel is opened so that the refrigerant
will flow from the outdoor unit into the indoor unit.
CAUTION
● 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 control valves, do not use parts with damaged
packaging.And,do not overtighten the steering wheel.
Gas leakage from the sercive valve part, can cause flow
interruptions and rarely cause ignition when in touching fire.
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)
Connect the power
supply earth cord at
4mm 2 this earth screw.
Wire length Wire cross-section
2
up to 25m 1.5mm
After remove the
screw and cover,
put the connecting
cables and fix the
cover with screw.
Fig. 1-3-2
Fig. 1-3-1
CAUTION
Type of grounding rod Length Arrange power cord so they do
SP-EB-2 900mm not touch service valve.
CAUTION
Note:
● Outdoor supply cords shall not
be lighter than polychloroprene
sheathed flexible cord with code
designation 60245 IEC 57.
IMPORTANT
Model Circuit Breaker
RAM-G110N5HAE 25A
What to check
Make sure that the spindles of both service valves are open.
(Floor models the Refrigerant (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.)
CAUTION
Reuse of piping R410A model only apply if previous
model is Hitachi and proper pump down method is used.
To Reuse Old Piping
● Piping of R410A model can be reused only when air-
conditioner is properly pumped down.
● The purpose of pump down is to collect back the
compressor oil (which is mixed with refrigerant and
circulating inside refrigeration cycle) properly into the
outdoor unit of air conditioner.
CAUTION
● Trial run should be conducted on one unit at a time
to check for incorrect wiring of connecting cord.