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English
7 - Product Description (continued)
SAFETY / CONTROL DEVICES
HAZARD CATEGORY / EVALUATION MODULE
A
High pressure switch (40.5 bar)
4/mod. B+D
AT
High pressure transducer
BT
Low pressure transducer
C
Water differential pressure switch (105 mbar)
D
Air temperature sensor
E
Outlet water temperature sensor
F
Inlet water temperature sensor
G
PED pressure relief valve (45 bar)
4/mod. H1 (4/mod. D)
S
5/16” shrader connection (service only)
Pipe connection with shrader valve
COMPONENTS
VESSEL CATEGORY (
2) / EVALUATION MODULE
1
Tandem or trio Scroll type compressors
2/mod. D1
2
Air cooled condenser
3
Filter drier
4
Electronic expansion valve
5
Globe valve
6
Plate heat exchanger (Dual type)
2-3/mod. B+D
7
Desuperheater (optional)
Note:
For reasons of readability, one circuit only is shown. The second circuit is identical.
5
1
D
2
3
4
5
6
BT
C
E
F
G
7
EXV
CONTROL
UNIT
CONTROL
S
S
AT
A
A
S
Refrigerant flow diagram - AQWL units
