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Procedures Of Wiring; Wiring Of The Outdoor Unit - Hitachi RAS-S10CY Installation Manual

Split unit air conditioner
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Please mount the outdoor unit on stable ground
G
to prevent vibration and increase of noise level.
Decide the location for piping after sorting out
G
the different types of pipe available.
Please face this side (suction side)
of the unit to the wall
Please remove
the cover for
wire connection.
Procedure to remove the cover of
wiring terminals
Remove the screw (1
G
piece).
G
Hold the projected part at
the lower left of the cover
and push the cover
upwards to remove it.
Hook
G
To close the cover, insert
the upper part of the
cover into the body of
outdoor unit, then be sure
that the hook below the
cover is plugged in before
screwing.
WARNING
G
THIS APPLIANCE MUST BE EARTHED.
!

Procedures of Wiring

Indoor Unit
Line Cord
L
N
A
B
AC 220-240V
Connecting cord
Indoor
Unit
Outdoor
Unit
GRN + YEL
WARNING
!
G
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.
G
Be sure to use only power cables approved from the authorities in your country. For
example in Germany: Cable type: NYM 3x2.0mm
G
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 an AC voltage drop between the L and N terminals if power is on. Therefore,
G
before servicing, be sure to remove the plug from the AC outlet or switch off the main
switch.
Insulation And Maintenance Of Pipe Connection
1
G
The connected terminals should be completely sealed with
heat insulator and then tied up with rubber strap.
G
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.
G
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.
G
Insulation material for pipe connection
Sleeve of
protection pipe
Putty
<
>
IA539: A
INS RAS/RAC-S10CY (E2)
1
Black
1
Preparation of Pipe
G
Use a pipe cutter to cut the copper pipe.
Copper pipe
CAUTION
!
Jagged edge will cause leakage.
G
G
Point the side to be trimmed downwards during trimming to prevent copper chips from
entering the pipe.
G
Before flaring, please put
Mould
on the hexagon screw cap.
RAS-S10CY, RAS-5115CY
A (mm)
Outer
Imperial
Rigid flaring
Diameter (ø)
flaring tool
tool
6.35 (1/4")
0.8 – 1.5
0 – 0.5
9.52 (3/8")
1.0 – 2.0
0 – 1.0
2
Pipe Connection
G
Please be careful when bending the copper pipe.
G
Applied frozen grease to the connection points and then screw in manually. After that, use
a torque wrench to tighten the connection.
RAS-S10CY, RAS-5115CY
Outer
dia. of pipe
Hexagon
screw nut
Small
6.35 (1/4")
dia. side
Big dia.
9.52 (3/8")
side
Spanner
Torque
wrench
Valve head cap
Valve core cap
Wiring Of The Indoor Unit
G
For wire connection of the Indoor unit, you need to remove Low Cover and Indicator Cover.
Outdoor Unit
A
B
d
Connecting Cord
6
GRN + YEL
Attach Indicator Cover and tightened screw
(do not tightened too hard as the screw hole
Strip wires
at front cover might be broken)
7
2
.
2
Installation Of Remote Controller
G
The remote controller can be placed in its holder which is
fixed on wall or beam.
G
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 fixed. The unit will beep
when signal is received from the remote controller. The signal
transmission is weaken by the fluorescent light. Therefore,
during the installation of the remote control holder, please
switch on the light, even during day time, to determine the
mounting location of the holder.
The controller should
be insert from top into
bottom side of the
holder as shown in
figure below.
Putty
Operation Test
G
Please ensure that the air conditioner is in normal operating
condition during the operation test.
G
Explain to your customer the proper operation procedures
as described in the user's manual.
3
Removal Of Air From The Pipe And Gas Leakage Inspection
Trimming tool
Mould
A
Copper pipe
RAS-S13CY
A (mm)
Outer
Imperial
Rigid flaring
Diameter (ø)
flaring tool
tool
6.35 (1/4")
0.8 – 1.5
0 – 0.5
12.7 (1/2")
1.0 – 2.0
0 – 1.0
RAS-S13CY
Torque N.m
Torque N.m
Outer
(kgf
cm)
dia. of pipe
G
Small
13.7 – 18.6 (140 – 190)
6.35 (1/4")
13.7 – 18.6 (140 – 190)
dia. side
Big dia.
34.3 – 44.1 (350 – 450)
12.7 (1/2")
44.1 – 53.9 (450 – 550)
side
19.6 – 24.5 (200 – 250)
19.6 – 24.5 (200 – 250)
Valve head cap
12.3 – 15.7 (125 – 160)
Valve core cap
12.3 – 15.7 (125 – 160)
1
2
TEMPORARY
SWITCH
Low cover
Indicator
Screw
Cover
Remove Screw and Indicator Cover
5
Attach back Low Cover

Wiring of The Outdoor Unit

G
Please remove the side cover for wire connection.
TEMPORARY
SWITCH
!
WARNING
CABLE SIZE ød
1-25mm
RAS-S10CY, RAS-5115CY
1-50mm
RAS-S13CY
3
Power Source And Operation Test
Power Source
!
CAUTION
G
Please use a new socket. Accident may occur due to the
use of old socket because of poor contact.
G
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
G
the plug under external force as this may cause poor
contact.
G
Do not fix the power cord with U-shape nail.
Remote
Controller
Screw (2 pieces)
Holder for
Remote Controller
1/6/09, 9:25
Procedures of using Vacuum Pump for Air Removal
As shown in figure on the right, remove
When the meter reaches –101KPa (–76cmHg)
during pumping, fully tighten the shuttle.
the cap of valve head and valve core
1
and then connect them to the vacuum
pump and sub-division valve.
Fully tighten the "Hi" shuttle of the sub-
division valve and completely unscrew
the "Lo" shuttle. Run the vacuum pump
2
for about 10–15 minutes, then completely
tighten the "Lo" shuttle and switch off
Charge
the vacuum pump.
hose
When pumping starts, slightly loosen
the flare nut to check of air sucked in.
Completely unscrew the spindle of the
Then tighten the flare nut.
service valve (at 2 places) in anti-
3
clockwise direction to allow the flow of
coolant (using Allen key).
Remove the connection pipe and tighten
4
the cap of valve head. The task is then
completed.
Cap of valve head
Gas Leakage Inspection
(kgf
cm)
G
Please use gas leakage detector to
check if leakage occurs at the con-
nection of hexagon screw nut as shown
on the right.
If gas leakage occurs, further tighten
the connection to stop leakage.
1
2
3
G
Pull the cover at
and
the directions as shown by
arrows to remove the low
cover.
4
!
WARNING
G
Please fix back the electrical
After unscrew and remove
plate after wiring work is
electrical plate, unscrew the
complete. Otherwise if short
terminal band to put connecting
circuit occur it may cause
cords. Fix back the band screw
unit burn.
and electrical plate.
A
G
If you cannot attach the side cover
due to the connecting cord, press the
connecting cord in direction to the
front panel to fix it.
Be sure that the hooks of the side
G
cover is fixed in certainly. Otherwise
water leakage may occur and this
Connection wire
causes short circuit or faults.
TIME DELAY FUSE USAGE
10A
15A
Meter showing pressure
Lo
Hi
Manifold valve
Vacuum pump
The body of
service valve
Cap of
valve core
Allen key
Cap of valve head
in
B
Side cover
Connection wire
is put under here
Screw for earth line
RAC-S10CY, RAC-5115CY
RAC-S13CY

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