Refrigerant Cycle Diagram Of Hitachi Air-To-Water Heat Pump Chiller (Rhue 80, 160, 240 Ag2) With Economizer.) - Hitachi RCUE40AG2 Service Manual

Maintenance
6.8.4. Refrigerant Cycle diagram of Hitachi Air-to-water Heat Pump Chiller
(RHUE 80, 160, 240 AG2) With economizer.)
Option Option Option
Option Option Option
Option
No.
1 Compressor Compressor
2 Air Side Heat Exchanger 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
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)

NOTE:
R407C shall be charged by LIQUID
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Chilled Water Inlet
Chilled Water Outlet
Name No.
16
17
18
19
20
21
22
23
24
A
B
C
D
E
Charging Evacuation
Unit side
Name
Compressor Dual Safety Valve (Option) Compressor Dual Safety Valve (Option)
4-Way Valve 4-Way Valve
Accumulator Accumulator
Liquid Tank Liquid Tank
Solenoid Valve
Capillary Tube Capillary Tube
Economizer
Strainer
Pressure Switch
High Pressure Gauge High Pressure Gauge
Low Pressure Gauge Low Pressure Gauge
Stop Valve Stop Valve
Charging Cylinder Charging Cylinder
Vacuum Pump Vacuum Pump
Gauge
manifold
6 6
Flange Connection
Flare Connection
Solder Connection
Refrigerant Cycle