Hitachi RAC-E70YHA User manual

CAUTION
!
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
●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.
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 30m Minimum pipe length 3m
above 200mm above 100mm
give
clearance
as wide as
possible
above 100mm
above 700mm above 200mm
inner diameter ø 16mm
<IA1575: B >
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
●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
!
Refrigerant piping
must be protected
from physical
damage. Install a
plastic cover or
equivalent.
Flare connection only at outside
of building
WARNING
!
Table 1: Minimum Floor area of the room A
min
(m
2
)
Minimum Floor area of the room
A
min
(m
2
)
Max refrigerant
charge amount
(g)
Max Piping
Length
(m)
Outdoor
Model
RAC-E70YHA
RAC-E80YHA
30
30
1600
1600
2.44
2.44
–
–
1.63
1.63
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
RAD-E**YHARAI-E**YHARAS-E**YHA
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.
< IA1575: B >
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.
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.
!
!
Refrigerant pipe size (outer diameter): Narrow pipe, Liquid (ø6.35mm); Wide pipe, Gas (ø15.88mm)
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
INSTALLATION
MANUAL
SPLIT UNIT AIR CONDITIONER
OUTDOOR UNIT
RAC-E70YHA
RAC-E80YHA
EN INSTRUCTION MANUAL
FOR SERVICE
PERSONNEL ONLY
!

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.
<IA1575: B >
Preparation of Pipe
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.
Pipe Connection
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
!
●When removing flare nut from the Indoor unit, please
ensure to use proper tooling.
●Prevent pipe from coming in contact with water or
working in wet area.
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
Removal Of Air From The Pipe And Gas Leakage Inspection
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
AIR REMOVAL
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.
Lo Hi
Vacuum
pump
Manifold valve
Meter showing pressure
Valve
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 (at 2 places) 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
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")
15.88 (5/8")
1.0 ~ 1.5
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
1.5 ~ 2.5
Wing nut type
Thickness
(mm)
0.8
0.8
0.8
1.0
0.0 ~0.5
0.0 ~0.5
0.0 ~0.5
0.0 ~0.5
Flare tool for R32
Clutch type
Conventional flare tool
Outer
dia.of pipe
6.35 (1/4")
9.52 (3/8")
12.70 (1/2")
15.88 (5/8")
6.35 (1/4")
9.52 (3/8")
12.7 (1/2")
15.88 (5/8")
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)
63.0 – 77.0 (630 ~ 770)
19.6 – 24.5 (200 ~ 250)
19.6 – 24.5 (200 ~ 250)
29.4 – 34.3 (300 ~ 350)
29.0 – 31.0 (296 ~ 316)
12.3 – 15.7 (125 ~ 160)
Small dia. side
Large dia. side
Valve core cap
Small dia. side
Large dia. side
●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
Indoor Unit Outdoor Unit
Detail of Cutting the Connecting Cord
Connecting cord
Outdoor Unit
Indoor Unit
Power line
Green + Yellow
(ground)
Green + Yellow
(ground)
Connecting cord Connecting cord
Strip wires
Strip wires
Green + Yellow
●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 plate for wire connection.
WARNING
!
●If you cannot attach the side plate 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 plate 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.
Earth terminal
Outdoor supply cords shall not be lighter
than polychloroprene sheathed flexible
cord with code designation 60245 IEC 57.
Wire length
up to 30 m
Wire cross-section
1.5mm2
For (Connecting cord - 1, 2, 3, Earth)
Wire cross-section
2.5 mm2
For (Power cord - L, N, Earth)
!
WARNING ●THIS APPLIANCE MUST BE EARTHED.
Power cord
Checking for the electric source and the voltage range
Cover
CAUTION
FINAL STAGE OF INSTALLATION
Insulation And Maintenance Of Pipe Connection
1
●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.
Power Source And Operation Test
2
Power Source
CAUTION
!
●Please use a new socket. Accident may occur due
to the use of old socket because of poor contact.
●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.
●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.
Operation Test
●Please ensure that the air conditioner is in normal
operating condition during the operation test.
●Explain to your customer the proper operation
procedures as described in the user’s manual.
Insulation material for pipe connection
Putty
Putty
Sleeve of
protection pipe
!
IMPORTANT
Circuit Breaker
20A