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Installation manual
8
RXYSQ4~6M7V3B
VRVII-S system air conditioner
4PW17806-1C
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
■
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.
■
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
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