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Bottom Side Piping Work
Liquid Piping
Liquid Piping
Bottom Side Piping Hole
Rear Piping Work
c
To avoid damage protect cables and
pipes with rubber sheath (Field-
Pipe Cover
Heat Preservation Pipe
To prevent gaps use a rubber bush and
insulation (Factory-Supplied) adequately
when installing the piping cover. Cut the
lower side guide line of the piping cover
when attaching work is difficult.
5.5
Air Tight Test
(1) The stop valve has been closed before
shipment, however, make sure that the stop
valves are closed completely.
(2) Connect the indoor unit and the outdoor
unit with field-supplied refrigerant piping.
Suspend the refrigerant piping at certain
points and prevent the refrigerant piping
from touching the weak part of the building
such as wall, ceiling, etc.
(If touched, abnormal sound may occur due
to the vibration of the piping. Pay special
attention in case of short piping length.)
Power Wire
Gas Piping
Knock Out Hole
Bottom Base
Rear Cover
Rear Piping Guide Hole
Supplied).
Rubber Sheath(attatch part)
Cut a "+" shape gap at rubber sheath
center,wire lead rubber sheath.
Gas Pipe
Power and Communication Wire
Liquid Pipe
(3) Apply the oil thinly at the seat surface of the
flare nut and pipe before tightening.
And when tightening the flare nut, use two
spanners.
Refrigerant Oil is field-supply.
Model:
68HES-H (Ether Oil)
α
Manufacturer: IDEMITSU KOSAN Co., Ltd.
Procedure
Completion
Applying
of Ref.
Nitrogen
Piping
(4) Stop Valve
Liquid Valve
Stop Valve Core for Opening and closing
Fig.5.3 Stop Valve Position
Operation of the stop valve should be
performed according to the below.
<Liquid Valve>
Check Joint
Only the charging hose
(
can be connected
Tighten the cap with a
torque below.
Liquid Valve:16N m Cap
Tighten the cap with a
torque below.
(Attach this after work)
.
Gas Valve:49N m
Liquid Valve:37N m
O-Ring
(rubber)
Refrigerant Piping
Hexagonal
Wrench(Size:4mm)
To open or close
(
spindle valve
13
Check of
Pressure
Gas
Decrease
Repairing
of Leakage
Part
Gas Valve
Do not apply two spanners
at this posotion.If applied,
leakage will occur
Use two spanners
here to squeeze
flare nut
)
Spindle Valve
.
Counterclockwise
Clockise
Close before shipment
.
Ref.Pressure
Refrigerant Piping
Liquid Stop Valve
)
Pass
. . ..
Open
. . ..
Close
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