Hitachi RAS-18YH4 Manual De Instrucciones página 146

• Please mount the Outdoor unit of stable ground to prevent vibration and increase
of noise level.
• Decide the location for piping after sorting out the different types of pipe available.
• When removing side cover, please pull the handle after undoing the hook by pulling
it downward. Reinstall the side cover in the reverse order of the removal.
Please face this side (suction side)
Please remove side cover
of the unit to the wall.
when connecting the piping
and connecting cord.
Pull downward
• Do not touch the suction
por t, bottom surface, or
aluminum fin of the outdoor
unit.
Failure to do so may cause
an injury.
CONDENSED WATER DISPOSAL OF OUTDOOR UNIT
• There is holes on the base of Outdoor unit for condensed water to exhaust.
• In order to flow 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 figure. Join the drain
pipe to one hole.
• Cover the drain hole with a bush. To install the bush, put it on the drain hole as
shown in the figure and press the both sides of the bush to fit into the hole.
After installation, check whether the drain pipe and bush cling to the base firmly.
BASE
DRAIN HOLE
above
100mm
9 BUSH
Push Push
DRAIN HOLE
Outer diameter: 16 mm or more
• Install the outdoor unit horizontally and make sure that condensate drains away.
• In case of using in chilly area
Especially, in case that there are many snows by very cold in chilly area, condensed
water freezes on the base and may result not to drain. In this case, please remove
the bush and the drain pipe at the bottom of unit. (Left and center near discharge
portion of air, each 1 place). It becomes smooth drain.
Ensure that the distance from the drain hole to the ground is 250 mm or more.
• THIS APPLIANCE MUST BE
WARNING
EARTHED.
Procedures of Wiring
When power supplies to Indoor Unit
Detail of cutting the connecting cord
Indoor Unit
Indoor Unit
Outdoor Unit
Green + Yellow
Line cord
10mm
ø2.0
Outdoor Unit
Connecting Cord
ø1.6 or ø2.0
Green + Yellow
When power supplies to Outdoor Unit
Detail of cutting the connecting cord
Indoor Unit Outdoor Unit
Indoor Unit
Green + Yellow
ø1.6 or
ø2.0
10mm
Connecting Cord Outdoor Unit
Green + Yellow
WARNING
• The naked part of the wire core should be 10mm 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.
• Be sure to use only wire specified for the use of air-conditioner.
• Please refer to the manual for wire connection and the wiring technique should
meet the standard of the electrical installation.
• There is an AC voltage drop between the LN terminal if the power is on. Therefore,
be sure to remove the plug from its socket.
WARNING
• Leave some space in the connecting cord for maintenance
purpose and be sure to secure it with the cord band.
• Secure the connecting cord along the coated part of the wire
using the cord band. Do not exert pressure on the wire as this
may cause overheating or fire.
1 Power Source And Operation Test
Power Source
WARNING
• Never remodel the power plug nor extend the long-distance
cord.
• Keep additional length for the power cord and do not render
the plug under external force as this may cause poor contact.
• Do not fix the power cord with U-shape nail.
• The power cable easily generates heat. Do not bring the
cable together with a wire or vinyl tie.
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 won't operate, check the cable for correct
connection.
• Turn on the lamp in the room where the indoor unit is installed
and check the remote controller for normal operation.
After completing the service switch
operation, be sure to keep the
switch pressed for one or more
seconds and stop the force-cooling
operation.
< S604 : C >
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1 Preparation of Pipe
• Use a pipe cutter to cut the copper pipe and remove burr.
• Remove burr and jagged edge will cause leakage.
• Point the side to be trimmed downwards during trimming to prevent copper
chips from entering the pipe.
CAUTION
• Before flaring, please put on the flare nut.
Die
Outer
Diameter (Ø)
6.35 (1/4")
9.52 (3/8")
2 Pipe Connection
CAUTION
9 BUSH
• Please be careful when bending the copper pipe.
0 DRAIN PIPE
• Screw in manually while adjusting the center. After that, use a torque wrench to
tighten the connection.
Flare nut
Wrench
Torque
wrench
Wiring of The Indoor Unit
• For wire connection of the Indoor unit, you need to remove the front cover, the low cover
under the body of the unit and terminal cover.
When power supplied to outdoor unit
• Power cannot be turned off using power switch.
Always keep the switch "off" and put the switch cover
on the power switch so that the power cannot be turned
on.
30mm 30mm
10mm 10mm • Power cord is not necessary, store it in the lower-side space on the rear
side of indoor unit. When storing, warp the power plug with the vinyl bag
for the parts, etc. and seal with adhesive tape to prevent dust or dirt.
Strip wires
70mm
• Terminal A and B of indoor unit do not need to be connected.
• When power supplied to outdoor unit, power is not turned off by switching
30mm 30mm
the power of indoor unit to "off". In that case, please cut the breaker.
10mm 10mm
Strip wires
• Remove the cover from the terminal base and screw the cable.
D
Connecting cord
C
B
Connecting cord
A
30mm
10mm
70mm
50mm 50mm
10mm 10mm
After remove the screw
Green + Yellow
Strip wires and terminal cover, and
put the connecting cords
and fix the terminal cover
with screw.
• Wiring for the horizontal piping from the right side
Cable
Electric box
Power
cord
Form the cable properly so that the
low cover won' t touch the cable in
installation.
2 Installation of Remote Controller
• The remote controller can be placed in its holder which is fixed
on wall or 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 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 must be hooked onto the hook at the lower part
of the holder. Push in the remote controller in the direction as
shown in figure below.
Screw (2 pieces)
Holder for Remote
Controller
Remote controller
Force-cooling operation
Screw
• When the service switch
of the indoor unit is
pressed for 1 or more
Cover
seconds, the force-
cooling operation starts.
Use this mode when
Service switch (If the switch is
performing the failure
pressed for one or more seconds, the
diagnosis or collecting
force-cooling operation starts. If the
refrigerant into the
switch is pressed for additional one or
outdoor unit.
more seconds, the operation stops.)
• Do not operate the unit for more than 5 minutes
CAUTION
while the spindle of the service valve is closed.
Trimming tool
Copper pipe
CAUTION
Die
A
• Please use
exclusive tool for
refrigerant R410.
Copper pipe
A (mm) Rigid Flaring Tool
For R410A tool For R22 tool
0 - 0.5 1.0
0 - 0.5 1.0
• In case of removing flare nut of a 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.
• Be sure to tighten the flare nut to the specified torque with
a torque wrench.
If the flare nut is overtightened, the nut may be split after a
long period has passed, and may cause a refrigerant leak.
Outer diameter Torque N·m
of pipe (ø) (kgf·cm)
Small diameter side 6.35 (1/4") 13.7 – 18.6 (140 – 190)
Large diameter side 9.52 (3/8") 34.3 – 44.1 (350 – 450)
Small diameter side 6.35 (1/4") 19.6 – 24.5 (200 – 250)
Valve
head cap
Large diameter side 9.52 (3/8") 19.6 – 24.5 (200 – 250)
Valve core cap 12.3– 15.7 (125 – 160)
Securely screw in the power cord and
connecting cord so that it will not get loose
or disconnect.
Tightening torque reference value:
1.2 to 1.6 N·m (12 to 16 kgf·cm)
Excessive tightening may damage the
interior of the cord requiring replacement.
When putting two connecting cords
through the band.
Screw
Insulating plate
Earth
Cord band
Terminal cover
Connecting cord
Screw
WARNING
After wiring the indoor unit, make sure
to reattach the terminal cover.
Not to interfere with the drain hose, fold the cable at the
drain hose side of the electric box as shown in the left
figure, and pass the cable just over the electric box and
pull it out.
Piping and drain hose layout
Pipe
Cable
Drain
Pipe
hose
Drain
Power cord
How to remove the front cover
¡
Remove the front panel
• Please remove and attach the front panel by both hands.
• After opening the front panel by both hands.
1
Undo the right arm while pushing it inside.
2
Slide the front panel to right as shown in figure. Then remove
while pulling it to front.
™
Remove the filters.
£
After removing two screws, pull the center of the front cover
towards you and release the claws.
¢
Pull the side faces (lower sections) of the front cover towards
you as shown in the figure and remove the cover.
• Push up the [PUSH] sections at the bottom of the indoor unit and
pull the bottom plate towards you. Then the claws are released
from the stationary plate.
(The [PUSH] sections are indicated by 2 arrows in the right figure)
3 Remove of Air From The Pipe And Gas Leakage Inspection
Procedures of using Vacuum Pump for Air Removal
When the meter reaches - 101KPa
As shown in right figure, remove the cap
(-76cmHg) during pumping fully
of valve core. Then, connect the charge
tighten the shuttle.
hose. Remove the cap of valve head.
1
Connect the vacuum pump adapter to the
vacuum pump and connect the charge
hose to the adapter.
Fully tighter the "Hi" shuttle of the manifold
valve and completely unscrew the "Lo"
shuttle. Run the vacuum pump for about
10-15 minutes, then completely tighten the
"Lo" shuttle and switch off the vacuum
Valve
2
pump.
• Loosen the spindle of the service valve
with small diameter by 1/4 turn and
tighten the spindle immediately after 5
to 6 seconds.
• Remove the charging hose from the
service valve.
Completely unscrew the spindle of the
Cap of
service valve (at 2 places) in anticlockwise
valve core
3
direction to allow the flow of refrigerant
(using Hexagonal Wrench key).
Tighten the cap of valve head. Check the
4
cap's periphery if there is any gas leakage.
The task is then completed.
Gas leakage inspection
Please use gas leakage detector to check if leakage
occurs at connection of Flare nut as shown on the
right.
If gas leakage occurs, further tighten the connection
to stop leakage.
Method to remove the low cover
• Pull at the ¡ and ™ in the directions as shown by
arrows to remove the cover.
Wiring of the Outdoor Unit
• Please remove the side cover for wire connection.
• If you cannot attach the side plate due to the connection cord, please
press the connecting cord in the direction to the front panel to fix it.
• Be sure that the hooks of the side cover fixed in certainly. Otherwise water
WARNING
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.)
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 gauge list below for the
wiring from house distribution fuse box to the outdoor unit in consideration of the blocked
rotor current.
IMPORTANT
Wire length Wire gauge
up to 6m 1.6mm 2
up to 15m 2.5mm 2
up to 20m 4.0mm 2
• Investigate the power supply capacity and other
IMPORTANT
electrical conditions at the installing 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
outdoor unit. In localities where electrical conditions
are poor, use of a voltage regulation is recommended.
• Install outdoor for the room air conditioner within the
reaching range of the line cord.
How to Attach the Front Cover
¡
Check that the drain pan is securely attached.
™
After installing the front cover onto the unit, hook three claws
at upper side of the cover securely. Then, push the center of
the front cover to lock the claws.
£
Tighten the two screws.
¢
Install the filter.
∞
Slide the shafts of the right and left arms on the front panel
along the steps to insert the shafts into the holes till they stop.
After checking that the shafts are securely inserted, close the
panel.
HOW TO REMOVE INDOOR UNIT
[Push] mark positions
Meter showing
pressure
Closed
R410A
Charge
Manifold
hose
valve
Vacuum
pump
Valve
Vacuum
pump
adapter
When pumping starts, slightly
loosen the flare nut to check of
air sucked in. Then tighten the
flare nut.
The body of service
valve
Cap of valve
head
Hexagonal
wrench Key
Cap of valve
head
cover
Earth terminal
Fuse Capacity
16A time delay fuse
Shaft
Step
Hole