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3.5
HYDRAULIC DIAGRAM
Key (Fig. 27):
1
-
System shut-off cock
2
-
3 bar Safety valve assembly
3
-
Hydronic unit circulator pump
4
-
Air vent valve
5
-
System draining valve
6
-
Liquid phase detection probe
7
-
System flow meter
8
-
System expansion vessel
9
-
Return probe
10 -
Plate heat exchanger
11 -
Air vent valve
12 -
Central heating integrated electrical resistance cap (optional)
13 -
Central heating manifold
14 -
Flow probe
15 -
Three-way valve (motorised)
16 -
System filling valve
17 -
System with filter cut-off fitting
18 -
System shut-off cock
LP -
Chiller line - liquid phase
GP -
Chiller line - gaseous phase
RU -
Storage tank unit return
MU -
Storage tank unit flow
RR -
System filling
R
-
System return
M -
System flow
27
45
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