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Installation manual
10
RXYSQ4~Y1B
VRVIII-S System air conditioner
4PW68122-1 – 02.2011
9.4.
Cautions for handling the valve cover
■
The valve cover is sealed where
indicated by the arrow.
Take care not to damage it.
■
After operating the valve, be sure to
tighten the valve cover properly.
■
Check for refrigerant leakage after tightening the cap.
9.5.
Cautions for handling service port
After the work, tighten the valve cover in place.
Tightening torque: 11.5~13.9 N•m
9.6.
Precautions when connecting field piping and
regarding insulation
■
For Sky Air or room air conditioner indoor units only:
Be careful not to let the BP unit and outdoor branch piping come
into contact with the compressor terminal cover.
If the liquid-side piping insulation might come into contact with it,
adjust the height as shown in the figure below. Also, make sure
the field piping does not touch the bolts or outer panels of the
compressor.
■
For Sky Air or room air conditioner indoor units only:
When the outdoor unit is installed above the BP unit and indoor
unit the following can occur:
The condensated water on the stop valve can move to the BP
unit. To avoid this, please cover the stop valve with sealing
material.
■
For VRV indoor units only:
Be careful not to let the indoor and outdoor branch piping come
into contact with the compressor terminal cover.
If the liquid-side piping insulation might come into contact with it,
adjust the height as shown in the figure below. Also, make sure
the field piping does not touch the bolts or outer panels of the
compressor.
■
For VRV indoor units only:
When the outdoor unit is installed above the indoor unit the
following can occur:
The condensated water on the stop valve can move to the
indoor unit. To avoid this, please cover the stop valve with
sealing material.
■
If the temperature is higher than 30°C and the humidity is higher
than RH 80%, then the thickness of the sealing materials should
be at least 20 mm in order to avoid condensation on the surface
of the sealing.
■
Be sure to insulate the liquid and gas-side field piping and the
refrigerant branch kit.
(The highest temperature that the gas-side piping can reach is
around 120°C, so be sure to use insulating material which is
very resistant.)
Tightening torque
Liquid pipe
13.5~16.5 N•m
Gas pipe
22.5~27.5 N•m
Any exposed piping may cause condensation or burns
if touched.
2
1
3
5
5
A
4
4
6
1
Compressor
2
Terminal cover
3
For Sky Air or room air conditioner indoor units only:
BP unit and outdoor field piping
3
For VRV indoor units only:
Indoor and outdoor field piping
4
Corking, etc.
5
Insulation material (field supply)
6
Bolts
A
Be careful with pipe, bolt and outer panel connections