Hitachi RAM-110NP6B Installation manual
CONDENSED WATER DISPOSAL OF OUTDOOR UNIT
There are holes on the base of Outdoor unit for condensed
water to exhaust.
In order to fl ow 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 fi gure. Join the drain pipe to
one hole.
At fi rst 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 fi rmly.
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 fi gures indicates prohibition.
● Be sure to tighten the fl are nut to the specifi ed torque using a torque wrench. If the fl are nut is tightened excessively, it may
crack as time elapses, cause refrigerant leakage.
SPLIT UNIT AIR CONDITIONER
INSTALLATION MANUAL
Outdoor
Unit RAM-110NP6B
(Mark is exclusive use tool for R410A)
●
+ – 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 qualifi ed technician to install your unit. Water leakage, short 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. Improper installation may cause water
leakage, electric shock and fi re.
●
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 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 or water leakage, electric shock and fi re may
occur.
●
Be sure to use the specifi ed piping set for R-410A. Otherwise, this may result in broken copper pipes or faults.
●
When installing or removing an air conditioner, only specifi ed 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 leading to possibility of unit rupture.
●
Be sure to ventilate fully if a refrigerant gas leak while at work. If the refrigerant gas comes into contact with fi re, 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 fi
re in the fan-driven heater, space heater, etc., a poisonous gas may occur.
●
Unauthorized modifi cations to the air conditioner may be dangerous. If a breakdown occurs please call a qualifi ed air conditioner technician
or electrician. Improper repairs may result in water leakage, electric shock and fi re,
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.
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.
● Do not install the unit near a location where there is fl ammable gas. The outdoor unit may catch fi re if fl ammable
gas leaks around it.
● Please ensure smooth fl ow 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
●
Selecting the installation location: Suitable location that will reduce the impact from rain and direct sun that may affect the unit performance.
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 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 disturb the neighbourhood.
●
Do not install at a location where there is fl ammable 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
BASE
DRAIN PIPE
3
Bush
QtyNo. Item
Bush
1
10
11
12
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”)
Parts number TA261D-4 001
One unit of 1.5kW, 1.8kW, 2.5kW or 3.5kW
One unit of 1.5kW, 1.8kW, 2.5kW or 3.5kW
One unit of 1.5kW, 1.8kW, 2.5kW, 3.5kW or 5.0kW
(5kW unit: Optional fl are adaptor for piping is
necessary.)
One unit of 1.5kW, 1.8kW, 2.5kW or 3.5kW
One unit of 1.5kW, 1.8kW, 2.5kW or 3.5kW
One unit of 1.5kW, 1.8kW, 2.5kW, 3.5kW or 5.0kW
(5kW unit: Optional fl are adaptor for piping is
necessary.)
When 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.
Pull downward
The pipe connection ports of the outdoor unit and connectable indoor units
are shown below.
CAUTION
● Make sure to connect to
four or more indoor units.
If you wish to prepare the copper tubes and insulation material in the fi eld, we recommend the following.
No. Material Specifi cation
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 fi x it.
●
Be sure that the hooks of the side cover is fi xed 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 fi x 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 3 x 2.5mm2.
(Circuit breaker = 25A)
●
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 diffi cult to move from place
to place after the fi rst 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 fi xed 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.
Arrange power cord so they
do not touch service valve.
Bind connecting
cords to make them
fi t between the convex
sections.
Grounding rod (optional)
(Earth wire and grounding rod are not
supplied. Please use optional items below.)
Earth line
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
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 unit 3, “Indoor 4 (1,
2, 3)” for indoor unit 4, “Indoor 5 (1, 2, 3)” for indoor unit 5 and “Indoor 6 (1,
2, 3)” for indoor unit 6.
Fig. 3-1
Fig. 3-3
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Circuit Breaker
25A
IMPORTANT
Figure showing the Installation of Outdoor Unit.
Height difference
Height difference between indoor units should be not more than 5m.
Piping length
(L1 + L2 + L3) = (L4 + L5 + L6) = Maximum 45m
However (L2 + L3) = (L5 + L6) = Maximum 35m
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 35m, add refrigerant R410A at 20 gram per every meter exceeds.
Mount the Outdoor unit on stable ground
by removed the 2 anchor bolt from wood
pallet and plug-in into the concrete ground
to prevent vibration and high noise level.
Decide the location for piping after sorting
out the different types of pipe available.
[Outdoor unit installation]
FOUR INDOOR UNITS SHOULD BE CONNECTED AT LEAST
INDOOR 3 AND INDOOR 6 CONNECTION AT OUTDOOR UNIT IS COMPULSORY. IF
NOT THERE WILL AN ICING AT THE CONDENSER BASE DURING WINTER SEASON.
To the outdoor unit, up to three indoor units can be connected until the total value of
each units’s capacity reaches 11 kW.
Note:
● Outdoor supply cords
shall not be lighter
than polychloroprene
sheathed fl exible cord
with code designation
60245 IEC 57.
CAUTION
!
Cable type
3 Core
Cable type
4 Core
Cable length
up to 25m
Wire cross-section
2.5mm
2
Wire cross-section
1.5mm
2
IMPORTANT
For (Power cord - L, N, Earth)
For (Connecting cord - 1, 2, 3, Earth)
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4. Preparation of Pipe
● Use a pipe cutter to cut the copper pipe.
● Before fl aring, please put on the fl are nut.
Outer
Diameter (Ø)
6.35 (1/4”)
9.52 (3/8”)
12.7 (1/2”)
Imperial fl aring tool
0
~ 0.5mm
0
~ 0.5mm
0
~ 0.5mm
Rigid fl aring 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 fl are nut of a indoor unit, fi rst remove a nut of small diameter side, or seal cap of
large diameter side will fl y out. Free from water into the piping when working.
● During connection, keep away from water.
● Be sure to tighten the fl are nut to the specifi ed torque using a torque wrench. If the fl are 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 fl are 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
fi tting the fl ared surface to the pipe.
CAUTION
5. Pipe Connection
5.1 Pipe connection
Connecting the pipe to outdoor unit
(1) Remove the fl are nut and seal cap from the service valve.
(2) Apply refrigerator oil to the service valve and the fl ared 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
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