Hitachi RAD-25QPB [4/4] Wall recessed wiring installation optional
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Hitachi RAD-25QPB [4/4] Wall recessed wiring installation optional

Hitachi RAD-25QPB [4/4] Wall recessed wiring installation optional
The remote controller
must slide in the holder,
in the direction as
shown in the fi gure,
until it hooks at the
lower end of the remote
controller holder.
Screw (2 pieces)
Remote
Controller
Holder
Remote
Controller
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")
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)
12.3 – 15.7 (125 – 160)
Small dia. side
Large dia. side
Valve core cap
Small dia. side
Large dia. side
2.7 Pipe connection
Sealing the refrigerating pipe
Cover pipe connection section using flare insulation material and
wrap a tape around it, leaving no gaps.
2.8 Connection of the connecting cord
(1) Remove the cover of the electric box.
(2) Connect the connecting cords.
(3) Assemble the cover of electric box.
3. Checking of drawing drain hose
(1) Connect the separate drain hose to the drain hose that is attached to the indoor unit.
(2) For a smooth flow of the condensed water, the drain hose should be inclined as shown in the figure below.
6. Installation of wireless remote controller (Optional)
• The remote controller can be placed in its holder which is fi xed
on a wall or a beam.
• To operate the remote controller at its holder, please ensure
that the unit can receive signal transmitted from the controller
at the place where the holder is to be fi xed. The unit will beep
when signal is received from
the remote controller. The signal
transmission is weaken by the
fl uorescent light. Therefore,
during the installation of the
remote controller holder, please
switch on the light, even during
day time, to determine the
mounting location of the holder.
7. Setting of switches High static-
pressure switch
(Full duct type and semi duct type)
• For full duct type, set the static-pressure
switch to HIGH STATIC-PRESSURE.
• For semi dust type, set the static pressure
switch to MED.
• If not set to HIGH or MED, there will be
reduction of cooling and heating capacities.
(At the time of delivery, the switch is set as
"NORMAL".)
8. When connecting the HA system / Dry Contact / H-Link (Optional)
• A separately purchased HA Connection Cord is required to get connected to the HA-System.
• To connect to H-link, a separately purchased RAC adapter is required.
• To install the wiring, the electrical box cover must be opened. (As for HA system/Dry contact, connect to CN9
whereas for the RAC adapter, connect to CN1101).
• The connection cord and power cables are to be arranged and tied up as per the diagram as shown below.
• Please refer to the respective user manuals of the HA-System and the RAC adapter, for further details.
• Please refer to the user manual for instructions on the removal and installation of the electrical box.
• For ordering all optional parts, please refer to the catalogue for part number.
9. Protection of lead wire
Wrap aluminum tape around PVC tube
between electric box and indoor unit
(cord band).
10. 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.
Installation of display panel (Optional)
• Select an installation position on ceiling or wall
where there is no obstacle to interrupt signal
reception.
• Loosen the screws of panel installation plate so
that bracket can be slightly moved.
• Match the display panel to panel installation plate
so the fi xing claws on the panel are securely
hooked.
• Match brackets to the opening on ceiling or wall
and tighten screws until bracket is fi rmly secured
to ceiling material.
• Install the panel cover so inside claws are
securely hooked to the panel installation plate.
• Conduct the indoor unit side housing of display
panel cord to the electric box of the indoor unit
and connect it with the housing at the side of the
unit.
4. Checking procedure after installation
4.1 Confi rm the smooth fl ow of water from the drain hose by pouring some water into the evaporating pan.
4.2 Use 'bushing' to arrange all the refrigerating pipes and sealer that belong to the pipe set, as shown in fi gures 4-1 and 4-2.
5. Installation of wired remote controller (Optional)
(a) Connection to the electrical box:
• Remove the cover of electric box
• Connect the connector of wired remote controller to CN1102
• Assemble back the cover of electrical box
(b) Wiring installation for wired remote controller (2 methods);
• Wired remote controller casing can be opened by pressing the
slots with minus screw driver (see below diagram)
• Decide the fi xing location of remote controller so that the length of wire shall be within 5 meters.
4.3 Wind the inadhesive vinyl tape which is belonged from the pipe set around the refrigerating pipes and the connecting
cord.
4.4 Leakage checking of refrigerant at the coupling by gas leak detector or soapsuds, as shown in Fig. 4-3.
4.5 Checking of evaporator coldness (cooling operation).
4.6 Checking of warm wind from condenser (cooling operation).
• Please be careful when bending the copper pipe.
• Screw in the screws manually while adjusting the center. After that, use a torque wrench to tighten the
connection.
Use gas leakage detector to check if leakage occurs when flare nut is connected
as shown in the figure.
If gas leakage occurs, tighten the connection to stop the leakage. (Use the
detector provided for R410A).
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. Free from water into the piping when working.
CAUTION
!
Flare nut
Torque wrench
Flare insulation
Margin of 2~4mm
GRN + YEL
After remove the band
and put the connecting
cords and fix with screw.
Connecting cable
Connect the earth cord
(Green-and-yellow)
Insert and fix the
connecting cords
with screw
Refrigerating
pipes
Drain
hose
Drain
hose
Air pocket
Ditch
WALL
Sleeve of
protection
pipe
Seal with
putty
2~5mm
Protection
pipe
Refrigerating pipes
Connecting cord
Protection pipe
Top casing
Bottom casing
Drain hose
Sealer
Wired
remote
controller
Bushing for refrigerating pipes
Seal with
putty
Indoor
Outdoor
Condensed
water pond
Condensed
water pond
Connecting cable
40mm
50mm
Strip wires
10mm
Detail of cutting the connecting cord
Binder (2) : Bind so there is no gap.
Wrench
Gas leakage inspection
• This appliance must be earthed.
• Do not make any connection in the middle
of the connecting cable. It may cause
overheating, smoke emission, or fi re.
Please ensure the smooth flow of condensed water of the
indoor unit during installation. (Carelessness may result in water
leakage.)
• Do not cut the provided wire. Excess wire should be properly wound and fi tted at safe place.
• Do not join the wire with additional wire.
WARNING
CAUTION
CAUTION
!
!
!
Wall penetration and installation of
protection pipe
• Drill a ø65mm hole on wall which is slightly
tilted towards the outdoor side. Drill the wall at
a small angle.
• Cut the protection pipe according to the wall
thickness.
• Empty gap in the sleeve of protection pipe
should be completely sealed with putty to avoid
dripping of rain water into the room.
Be sure that the hose is not
loosely connected or bent.
CAUTION
!
Be sure that the wire is not in
contact with any metal in the
wall. Please use the protection
pipe as wire passing through
the hollow part of the wall so
as to prevent the possibility of
damaged by mouse.
CAUTION
!
Good Bad Bad
Bad Bad
Fig. 4-1
Fig. 4-2
Fig. 4-3
Trial run should be conducted on one unit at a time to check for incorrect wiring of connecting cord.
CAUTION
!
Lead wires (4 strands)
are inserted through and
fastened via a rib-clip
Location of wall
mounting screw
Lead wires
connector
Lead wires
connector
Lead wires
connector
Lead wires
(4 strands)
Wires
Wires
Wires
Wall mounting screws (2 pieces
to be used) (provided)
Wall
mounting
screws
(2 pieces)
(provided)
Opening on ceiling or wall
Panel installation plate
Panel cover
Display panel
Bracket
Bracket
Panel cover
Ceiling or wall
(Thickness 7~18mm)
Above
50mm
Bracket
Display panel
Claw
Screw
CROSS SECTION
AAA size
Battery
Plug
Static Pressure switch (SW504)
High Medium Normal
Aluminum tape (large)
Electric box
RAC Adapter
Wired remote controller
Electrical box
Power cable
Binder
Connection cord
PVC tube
CN1102
Wall recessed wiring installation (Optional)
Wiring installation illustrations
Inside top wiring installation (Alternative)
2. When connecting wires from the inside top portion of
the top casing:
• Break off a perforated aperture located at the top
portion of the bottom casing by using a nipper.
Smoothen the aperture by using a nipper.
• Fix the bottom casing to the wall by provided screw.
• Connect the wires to the lead wires connector.
• Mount the wires through the provided slot on top
casing.
• Assemble the top casing to the fi xed bottom casing.
(Refer to the illustration below for installation details)
1. When connecting the wires via the wall's recessed
slot:
• Fix the bottom casing to the wall by the screw
provided.
• Assemble the top casing to the fi xed bottom casing.
(Refer to the illustration below for installation
details.)
Wires
CN1101
CN9
INS RAD-18-25-35-50QPB (EN) 4INS RAD-18-25-35-50QPB (EN) 4 12/19/14 9:42 AM12/19/14 9:42 AM

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