Hitachi RAD-18QPB Installation Manual page 3

• Chamber of discharge grille
Suspension bolt
(M10: Local purchase)
Above 300
Front view
Opening on ceiling
Plan view
(3) Installation of suspension bolt
• This is the same as for discharge/suction duct type.
Follow instructions for discharge/suction duct type.
(4) Preparation for installing indoor unit
ƒ
• Remove the screw of the electric box and then
remove electric box.
• Relocate the electric box with lead wires kept
connected. Ensure the lead wire is positioned at the
upper side, and hook the claw of electric box to side
plate. Then fi x the electric box to the bottom of the
indoor unit using 4 screws.
• Install 4 suspension clamps at both sides of indoor unit,
2 clamps at each side, using 8 tapping screws
(Since sizes of left and right clamps are different for
certain parts, refer to diagram on the right.)
• Install chamber of discharge of unit side on the indoor
unit using 10 tapping screws.
(5) Installation of indoor unit
• Set nut and washer on suspension bolt and hook it to
suspension clamp by lifting the indoor unit.
• Make sure that indoor unit is kept at level using a level
or vinyl hose with water.
• Fix the indoor unit so that the space between bottom
surfaces of ceiling and indoor unit is 58mm.
Refer to the installation manual of optional parts for
installation of:
--Discharge grille chamber
--Suction grille
--Discharge grille
--Flexible duct
!
CAUTION
• Install the indoor unit in a straight level. If the
indoor unit is inclined, water may leak.
• If space between bottom surfaces of indoor
unit and ceiling is not correct, there may be a
gap between grille and ceiling surface, with
consequent leakage of condensed water.
INSTALLATION OF NON DUCT TYPE
(1) Installation fi gure
Opening on ceiling 960
Suspension bolt 790
Indoor unit
Discharge duct
Discharge grille
Suction grille
Above 300 Above 300
(2) Opening on ceiling and suspension bolt position
Opening for discharge 960
Suspension bolt 790
Suspension bolt
Indoor unit center
(Discharge side)
Plan view
(View from ceiling)
Indoor unit center
Suspension bolt
about 170
Opening for discharge
Front view
(View from the front)
<IA1171: A >
INS RAD-18-25-35-50QPB (EN) 3 INS RAD-18-25-35-50QPB (EN) 3
Reinforcement
Ceiling
Above 200
Above 300
Side view
Suspension bolt
position 740
‡
‡
Right side
suspension clamp (2)
suspension clamp (2)
3 Screw
8 Screw
3 Screw
8 Screw
ˆ
.
Screw
Indoor unit
Chamber of discharge
of unit side
A level
Suspension bolt (M10)
58mm
(Local purchase)
Hexagon nut (M10)
(Local purchase) Opening on ceiling
Washer
(Local purchase)
• Select the indoor unit position, fi xing direction of air
outlet so that cool/hot air reaches all the room.
• Do not allow any obstacle to block air fl ow within
1m of suction grille.
Air deflector
Discharge duct
Discharge grille
Above 800
• Use M10 bolt for suspension.
• Opening of ceiling and suspension bolt position are
as shown on the left.
• Before installing the indoor unit, prepare opening
960mm x 520mm on ceiling, and 868mm x 152mm
on wall and arrange drain pipe, refrigerant pipe and
connecting cord in their installation positions.
• For fi nishing of opening on ceiling and wall arrange
with builder in detail.
• Be sure to reinforce furring of ceiling (frame: ceiling
joist and joist supporter) to maintain level of ceiling
and prevent vibration of ceiling plate.
52 or less
Wall surface Above 650
(3) Installation of suspension bolt
• This is the same as for discharge/suction duct type.
Follow instructions for discharge/suction duct type.
(4) Preparation for installing indoor unit
ƒ
• Remove the screw of the electric box and then
remove electric box.
• Relocate the electric box with lead wires kept
connected. Ensure the lead wire is positioned at the
upper side, and hook the claw of electric box to side
plate. Then fi x the electric box to the bottom of the
indoor unit using 4 screws.
• Install 4 suspension clamps at both sides of indoor unit,
2 clamps at each side, using 8 tapping screws
(5) Change of suction opening and fi lter
position from bottom to back side
• Remove the fi lter from the bottom side of indoor
Left side
unit by removing 8 screws from the fi lter holders.
• Remove 6 screws from the back plate of the
indoor unit.
• Then install the back plate at the bottom of indoor
unit using 6 screws.
• Install fi lter at backside of indoor unit by fi xing it
with fi lter holders (4 portions) using 8 screws.
(6) Installation of indoor unit
• Set nut and washer on suspension bolt and hook it
to suspension clamp by lifting the indoor unit.
• Make sure that indoor unit is kept at a straight level
using a level or vinyl hose with water.
Ceiling
• Fix the indoor unit so that the space between
bottom surfaces of ceiling and indoor unit is 58mm.
(Unit : mm)
2.5 Connection of the drain pipe
(1) Securely glue connection part of drain hose and
PVC pipe, using PVC adhesive.
!
CAUTION
• If gluing of drain hose and PVC pipe is too weak,
water leakage may occur.
(2) Make sure to wrap generally-available insulator (10m
or more of foamed polythene) around drain hose
inside the house for insulation.
(3) To check the drain and water leakage, after
connecting power:
• Add water to the water pan of the indoor unit as
shown below.
(4) Test run method

Turn power on.
‚
Remove lid of electric box and set the drain pump
test run switch to TEST.
ƒ
After checking the drainage, return the switch to
NORMAL.
(5) Perform test running of drain pump to check
drainage operation.
!
CAUTION
• If checking of drainage is omitted, water leakage may
occur.
• If drain pump test run is left set to TEST, drain pump
may malfunction.
2.6 Preparation of pipe
• Use a pipe cutter to cut the copper pipe.
Copper pipe
• Before fl aring, please put on the fl are nut.
Die
Outer
Diameter
mm (inch)
6.35 (1/4")
9.52 (3/8")
(Unit : mm)
12.70 (1/2")
15.88 (5/8")
‡
Right side
suspension clamp (2)
3 Screw
8 Screw
3 Screw
ˆ
.
8
Screw
Indoor unit
Filter holders
Filter
Back plate
(1) Bottom side suction opening
Indoor unit
Filter holders
(2) Back side suction opening
!
CAUTION
• Be sure to install the indoor unit level. If the
indoor unit is inclined, water may leak.
• If space between bottom surfaces of indoor
unit and ceiling is not correct, there may be a
gap between grille and ceiling surface, with
consequent dropping of condensed water.
Suspension bolt (M10)
(Local purchase)
Hexagon nut (M10)
(Local purchase)
Opening on ceiling
Washer
(Local purchase)
PVC adhesive
Pump of oil stove
Water
Pail
Water pan
Drain pump test switch (SW503)
!
CAUTION
Trimming tool • Jagged edge will cause leakage.
• Point the side to be trimmed downwards during
trimming to prevent copper chips from entering
the pipe.
Die
• Please use exclusive tool.
Copper pipe
A (mm)
Thickness
Flare tool for R410A Conventional fl are tool
(mm)
Clutch type Wing nut type
Clutch type
~
0.8 0.0 0.5 1.0 ~ 1.5 1.5 ~ 2.0
~
0.8 0.0 0.5 1.0 ~ 1.5 1.5 ~ 2.0
~
0.8 0.0 0.5 1.0 ~ 1.5 1.5 ~ 2.5
~
1.0 0.0 0.5
1.0 ~ 1.5 1.5 ~ 2.5
‡
Left side
suspension clamp (2)
Filter
Back plate
A level
58mm
Ceiling
PVC pipe
Drain hose
Drain pump
Test Normal
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