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Cooling operation and hydraulic diagram YLHA PLUS 20 and 27
12
7
10
10
8
8
9
11
18
14
13
17
15
16
b
a
1
Safety/Control devices
Components
A
High-pressure switch
1
Compressor
12
Automatic air bleed
B
Low pressure switch
2
Air-cooled condenser
13
Expansion vessel
E
Condenser unit temp. sensors
(fan speed regulation and read‐
ing)
3
Filter dryer
14
Safety valve
F
Water outlet temp. sensor (anti‐
freeze, regulation and display)
4
Sight glass
15
Water pump
G
Water inlet temp. sensor (Set‐
ting and display)
5
Expansion valve
16
Flow switch
6
Heat exchanger
17
Drain connection
7
Heat exchanger antifreeze heat‐
er
18
Water filter (outside the unit)
8
Globe valve
→
Pipe connection with Schrad‐
er valve
9
Four-way valve
- ‑ ‑
For units with hydro kit only
10
Check valve
a
Water inlet
11
Liquid receiver
b
Water outlet
Technical Information
1
Cooling operation and hydraulic diagrams 1.10
41
Summary of Contents for YLCA
Page 4: ...1 Technical Information ...
Page 68: ...2 Electric circuit diagrams ...