30
PMML0140A rev.1 - 07/2009
REFRIGERANT PIPING &
REFRIGERANT CHARGE
Field-Supplied
Pipe
Cap. Tighten with
the indicated
torque
Refrigerant Pressure
(Fig. b)
O-Ring
(rubber)
For opening and
closing the Spindle
Valve
Plug of
check
joint only
charging
hose can be
connected.
Tighten the
cap with the
indicated
torque
Flange. Tighten the
bolts with indicated
torque
Closing screw
(Spindle Valve)
CAUTION:
Do not apply force to the spindle valve at the end of -
opening (5 N.m or smaller). The back seat construction is
not provided.
At the test run, fully open the spindle. If not fully opened, -
the devices will be damaged.
Flange Piping Connection
¡
(Only for RASC-10HRNE)
Conrm that the valve is closed. -
Prepare a eld-supplied bend pipe for liquid line. Connect it to
the liquid valve by are nut through the square hole of bottom
base.
Factory-supplied
Pipe ange with
silencer
Field-supplied pipe
Prepare a eld-supplied pipe for gas line. Solder it and the -
factory-supplied pipe ange at the outside of the unit.
Connect the pipe ange to gas valve with the factory-supplied
gasket through the square hole of Bottom Base. Do not use
the gasket that had been attached to the unit.
Bolts (x2)
Gas Valve
Gasket
Gasket
Pipe Flange
Flange
Remove
Nut (x2)
Washer (x2)
11.4. PIPING AND REFRIGERANT CHARGE
11.4.1. REFRIGERANT PIPING LENGTH
The refrigerant piping between the indoor unit and the RASC
unit should be designed using the following chart. Keep the
design point within the dark area of the chart, wich is showing
the applicable height difference according to piping length.
Chart for piping design:
•
RASC-5/10H(V)RNE
30
10
0
-20
20
-10
10
20
30
40 50
0
L(m)
H(m)
RASC-3HVRNE
30
10
0
-20
20
-10
10
20
30
0
L(m)
H(m)
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