29
PMML0140A rev.1 - 07/2009
REFRIGERANT PIPING &
REFRIGERANT CHARGE
1. Stop Valve are located on rear cover side of unit. Before
connecting refrigerant piping, the stop valve protection cover
shall be removed.
RASC-3/5HVRNE
−
Gas valve
Liquid valve
RASC-10HRNE −
Gas valve
Liquid valve
2. It is recommended to use a tube bender for pipe bending work.
3. For gas pipe connection, use the factory supplied Flange Pipe
(Only for RASC-10HRNE).
Tightening Torque ¡
See tighten torque in the next table:
Valve
Size Tightening torque (N.m)
Pipe
size
Allen
Wrench
size
A B C D
Liquid
RASC-3/5HVRNE Fig. a
9.53
(3/8”)
4 mm 8 16.5 40 14~18
RASC-10HRNE Fig. a
12.7
(1/2”)
5 mm 8 38 40 9.8
Gas
RASC-3/5HVRNE Fig. a
15.88
(5/8”)
5 mm 10 30 80 14~18
RASC-10HRNE Fig. b
25.4
(1”)
10 mm 25 49 55~75(*) 9.8
(*) Flange connection, check specic instruction on ange piping connection
paragraph.
O-Ring (Rubber)
For opening and
closing the Spindle
Valve
Seat Surface
(When fully closed)
Refrigerant
pressure
Plug of
check
joint only
charging
hose can be
connected.
Tighten the
cap with the
indicated
torque
Flare. Tighten with the
indicated torque
Closing screw
(Spindle Valve)
Cap. Tighten with the
indicated torque
Allen Wrench
(Fig. a)
11.3. PIPING CONNECTION FOR RASC UNIT
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