Hitachi HNE Serie Manual De Instalación Y Funcionamiento página 29

REFRIGERANT PIPING &
REFRIGERANT CHARGE
Piping Connection for flange
■
Confirm that the valve is closed.
-
Prepare a field-supplied bend pipe for liquid line. Connect it to the liquid valve by flare nut through the square hole of bottom base.
- Prepare a field-supplied bend pipe for gas line. Solder it and the factory-supplied pipe flange at the outside of the unit.
Connect the pipe flange 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.
Gas Valve
Remove
- Solder the bend pipes and field piping.
Apply the required tightening torque in to the bolts
Part Tightening Torque (N.m)
Bolt for flange
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Factory-supplied
Pipie Flange
Solder by bottom
side up
Field-supplied
bend pipe
Gasket Gasket
Flange
Bolts for flange
53 to 75
Pipe Flange
PMGB0126A rev.2 - 11/2006
17