Hitachi RAM-22QH2A User manual

CONDENSED WATER DISPOSAL OF OUTDOOR UNIT
ÁThere are holes on the base of Outdoor unit for condensed
water to exhaust.
ÁIn order to ßow 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 Þgure. Join the drain pipe to
one hole.
Á At Þrst 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 Þrmly.
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.
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 Þgures indicates prohibition.
●Be sure to tighten the ßare nut to the speciÞed torque using a torque wrench. If the ßare nut is tightened excessively, it may
crack as time elapses, cause refrigerant leakage.
!
!
SPLIT UNIT AIR CONDITIONER
INSTALLATION MANUAL
Outdoor Unit RAM-22QH2A
(Mar k is e xc lu si ve u se t oo l fo r R4 10 A)
● + – Screwdriver ● Measuring Tape ● Knife
● Saw ● ø 65mm Power Drill ● Hexagonal Wrench Key
( 4mm)
● Wrench (14, 17, 22, 26mm) Gas
Leakage Detector
● Pipe Cutter ● Putty ● Vinyl Tape
● Pliers ● Flare Tool Vacuum Pump Adapter
Manifold Valve Charge Hose Vacuum Pump
●Carefully read through the procedures of proper
installation before starting installation work.
●The sales agent should inform customers regarding
the correct operation of installation.
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
!
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 3.5mm has to be installed. Without a
circuit breaker, the danger of electric shock exists.
●Please request your sales agent or qualiÞed technician to install your unit. Water leakage, short circuit or Þre may occur if
you do the installation work yourself.
FOR SERVICE PERSONNEL ONLY
Tools Needed For Installation Work
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.
●Unauthorized modiÞcations to the air conditioner may be dangerous. If a breakdown occurs please call a qualiÞed air
conditioner technician or electrician. Improper repairs may result in water leakage, electric shock and Þre, etc.
●Be sure to connect the earth wire from the power supply wire to the outdoor unit and between the outdoor and indoor
unit. Improper earthing may cause electric shock.
●Please observe the instructions stated in the installation manual during the process of installation. Improper installation may
cause water leakage, electric shock and Þre.
●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 speciÞed 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 Þre.
●Please use the speciÞed components for installation work. Otherwise, the units may collapse or water leakage, electric shock
and Þre may occur.
●Be sure to use the speciÞed piping set for R-410A. Otherwise, this may result in broken copper pipes or faults.
●When installing or removing an air conditioner, only speciÞed refrigerant (R410A) 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 Þre, 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 Þre in the fan-driven heater, space heater, etc., a poisonous gas may occur.
●Do not install the unit near a location where there is ßammable gas. The outdoor unit may catch Þre if ßammable
gas leaks around it.
●Please ensure smooth ßow of water when installing the drain hose.
●An IEC approved power cord should be used. Power cord type: NYM.
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 clearances of the unit from top, left, right and front are speciÞed in Þgure 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 ßammable 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.
Names of Outdoor Components
Drain Pipe
1
Dimension of Mounting Stand
of the Outdoor unit
(unit: mm)
A
Figure showing the Installation of Outdoor Unit.
3
Bush
QtyNo. Item
Bush
1
10
11
12
Height difference
Height difference between indoor units should
be not more than 5m.
Piping length
(L1 + L2) = Maximum 35m
Minimum piping length for each indoor unit is 5m.
Maximum piping length for one indoor unit is 25m.
Additional charge of refrigerant is not required.
ÁMount the Outdoor unit on stable ground to prevent vibration and
increase of noise level.
ÁDecide the location for piping after sorting out the different types of
pipe available.
Flare adaptor for piping
The ßare 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
One unit of 1.8kW, 2.5kW or 3.5kW
One unit of 1.8kW, 2.5kW, 3.5kW
or 5.0kW
(5kW unit: Optional ßare adaptor for
piping is necessary.)
ÁWhen removing side cover, pull the handle
after releasing the hook by pulling it
downward.
Face this side (suction side) of
the unit to the wall.
Remove side cover
when connecting the
piping and connecting
cord.
ÁTo the outdoor unit, up to two indoor units can be connected until
the total value of each units’s capacity reaches 7.5 kW.
ÁThe pipe connection ports of the outdoor unit and connectable indoor
units are shown below.
[Outdoor unit installation]
CAUTION
● Make sure to connect to
two indoor units.
!
If you wish to prepare the copper tubes and insulation material in the Þeld, we recommend the following.
No. Material SpeciÞcation
1 Cooper tube
Deoxidized annealed copper pipe with 6.35mm O.D., 0.8mm wall thickness.
4.0kW or less Small dia.
Deoxidized annealed copper pipe with 9.52mm O.D., 1.0mm wall thickness.Large dia.
Deoxidized annealed copper pipe with 6.35mm O.D., 0.8mm wall thickness.Small dia.
Deoxidized annealed copper pipe with 12.7mm O.D., 1.0mm wall thickness.Large dia.
5.0kW
2 Flare nut
Flare nuts with 6.35mm O.D..
4.0kW or less Small dia.
Flare nuts with 9.52mm O.D..Large dia.
Flare nuts with 6.35mm O.D..Small dia.
Flare nuts with 12.7mm O.D..Large dia.
5.0kW
3 Insulation for refrigerating pipe
Foamed polyethylene insulation pipe which does not corrode the copper tube.
Large dia. pipe side: 15mm I.D.., 8mm wall thickness.
Small dia. pipe side: 8mm I.D., 7mm wall thickness.
4 Connecting cord Refer to item 3.3.
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.
(5) Install the unit in a stable place to minimize vibration or noise.
(6) After arranging the cords and pipes, secure them in place.
WARNING
●If you cannot attach the side cover due to the connecting cord, press the connecting cord in direction to the front panel
to Þx it.
●Be sure that the hooks of the side cover is Þxed 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.)
●This appliance must be earthed.
●Power is supplied through outdoor unit, do not connect power source to indoor unit.
Wiring of The Outdoor Unit
●Please remove the side cover for wire connection.
!
WARNING
!
● The naked part of the wire core should be 10 mm and Þx 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 power cables approved from the authorities in your country. For example in Germany: Cable type: NYM 3x1.5mm
2
. (fuse
= 16A time delay)
● Please refer to the installation manual for wire connection to the terminals of the units. The cabling must meet the standards of electrical
installation.
● There is a AC voltage of drop between the L and N terminals. Therefore, before servicing, be sure to switch off the main switch.
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.
3. Installation procedure and notice
Especially, the selection of installation place need great care for the
split type air conditioner, because it is very difÞcult to move from place
to place after the Þrst installation.
3.1 Wiring
(1) Connect the electrical wiring between the Indoor and Outdoor unit,
as shown in Fig. 3-1. 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 Þxed by the band which is located
near the terminal board.
3.3 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.
●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 arrangements for the necessary electrical
work etc.
The electrical work includes the wiring work up the outlet. In localities where electrical conditions are poor, use of a voltage regulation is
recommended.
Fuse Capacity
16A time delay fuse
Arrange power cord so they do
not touch service valve.
Bind connecting cords to make them
Þt between the convex sections.
Grounding rod
(optional)
(Earth wire and grounding rod are not supplied. Please use optional items below.)
Earth line
IMPORTANT
Procedures of Wiring
Fig. 3-2
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)
WARNING
!
Type of grounding rod
SP-EB-2
Length
900mm
CAUTION
!
Cable length
up to 16m
up to 15m
up to 25m
Wire cross-section
1.5mm2
2.5mm2
4.0mm2
IMPORTANT
WARNING
● Connect the Connecting Cord to C1 and D1 “Indoor 1” for indoor unit
1, C2 and D2 “Indoor 2” for indoor unit 2.
!
Fig. 3-1
Fig. 3-3
< IA1072: A >
BASE
DRAIN PIPE
Note:
●Outdoor supply cords shall not
be lighter than polychloroprene
sheathed ßexible cord with code
designation 60245 IEC 57.
!
CAUTION
Pull downward

4. Preparation of Pipe
●Use a pipe cutter to cut the copper pipe.
●Before ßaring, please put on the ßare nut.
Outer
Diameter (Ø)
6.35 (1/4”)
9.52 (3/8”)
12.7 (1/2”)
Imperial ßaring tool
0 ~0.5mm
0 ~0.5mm
0 ~0.5mm
Rigid ßaring tool
A (mm)
●Please use exclusive
tool 1.0mm
1.0mm
1.0mm
Outer diameter of pipe (Ø) Torque N·m (kgf · cm)
Small diameter side
●Please be careful when bending the copper pipe.
●Screw in manually while adjusting the center. After that, use of torque wrench to tighten the connection.
Large diameter side
6.35 (1/4”) 13.7-18.6 (140-190)
9.52 (3/8”) 34.3-44.1 (350-450)
12.7 (1/2”) 44.1-53.9 (450-550)
Small diameter side
Large diameter side
6.35 (1/4”) 19.6-24.5 (200-250)
9.52 (3/8”) 19.6-24.5 (200-250)
12.7 (1/2”) 29.4-34.3 (300-350)
Valve head
cap
12.3-15.7 (125-160)
Valve core cap
CAUTION
!
●In case of removing ßare nut of a indoor unit, Þrst remove a nut of small diameter side, or seal cap of
large diameter side will ßy out. Free from water into the piping when working.
●During connection, keep away from water.
●Be sure to tighten the ßare nut to the speciÞed torque using a torque wrench. If the ßare nut is tightened
excessively, it may crack as time elapses, causing refrigerant leakage.
●Install the unit in a stable place to minimize vibration or noise.
●After arranging the cords and pipes, secure them in place.
Gas leakage inspection
Please use gas leakage detector to check if leakage occurs
at connection of ßare nut as shown on the right.
If gas leakage occurs, further tighten the connection to stop
leakage. (Use the detector provided for R410A)
Tighten all the way by hand.
Do not tighten all at once, but tighten it while
Þtting the ßared surface to the pipe.
CAUTION
!
5. Pipe Connection
5.1 Pipe connection
Connecting the pipe to outdoor unit
(1) Remove the ßare nut and seal cap from the service valve.
(2) Apply refrigerator oil to the service valve and the ßared portion
of the pipe.
(3) Using a wrench, security tighten.
●Jagged edge will cause leakage.
●Point the side to be trimmed downwards during trimming
to prevent copper chips from entering the pipe.
7. 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.
●If the indoor unit does not operate, check to see that the connections are correct.
CAUTION
●Trial run should be conducted on one unit at a time to check for incorrect wiring of connecting cord.
!
6. Removal Of Air From The Pipe And Gas Leakage Inspection
6.1 Air purging by using vacuum pump
Fig. 6-1
Fig. 6-2
Fig. 6-3
< IA1072: A >