Refrigerant Cycle Diagram Of Hitachi Air-To-Water Heat Pump Chiller (Rhue 40, 50, 60, 70, 100, 120, 140, 180, 210Ag2) - Hitachi RCUE40AG2 Service Manual

Maintenance
6.8.3. Refrigerant Cycle diagram of Hitachi Air-to-water Heat Pump Chiller
(RHUE 40, 50, 60, 70, 100, 120, 140, 180, 210AG2)
Option
Option
Option
No.
1 Compressor Compressor
2 Air-Side Heat Exchanger Air-Side Heat Exchanger
3 Water Side Heat Exchanger Water Side Heat Exchanger
4 Bifl ow drier
5 Electronic Expansion Valve Electronic Expansion Valve
6 Check Valve
7 Stop Valve (with check Joint) Stop Valve (with check Joint)
8 High Pressure Switch High Pressure Switch
9 Pressure Sensor (Low) Pressure Sensor (Low)
10 Pressure Sensor (High) Pressure Sensor (High)
11 Pressure Relief Valve

NOTE:
R407C shall be charged by LIQUID
pag. 168
SMGB0003 rev.0 - 11/2006
Option Option Option Option
Chilled Water Inlet
Chilled Water Outlet
Name No.
12 Sight Glass Sight Glass
13 Compressor Safety Valve (Option) Compressor Safety Valve (Option)
14 Stop Valve (Option) Stop Valve (Option)
15 Stop Valve (Option) Stop Valve (Option)
16 Compressor Dual Safety Valve (Option) Compressor Dual Safety Valve (Option)
17 Stop Valve Stop Valve
A High Pressure Gauge High Pressure Gauge
B Low Pressure Gauge Low Pressure Gauge
C Stop Valve Stop Valve
D Charging Cylinder Charging Cylinder
E Vacuum Pump Vacuum Pump
Charging
Unit side
Name
Gauge
manifold
Evacuation
Flange Connection
Flare Connection
Solder Connection
Refrigerant Cycle