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4
1.4
FUNCTIONAL DIAGRAM
PUMP KIT 2/3 ZONE
CONFIGURATION
Fig. 2
KEY
1 Fan
2 Water-gas exchanger
3 Breather valve
4 Gas valve
5 Gas rate adjuster
6 C.H. sensor (SM)
7 Flowmeter
8 Zone 1 system pump
9 Single-acting valve
10 Hot water tank pump
11 Expansion vessel
12 Boiler discharge
13 Air relief valve
14 Automatic by-pass
15 D.H.W. discharge cock
16 Tap water probe (SB)
17 Storage tank 120 liter
18 Magnesium anode
19 D.H.W. safety valve
20 Filling loop (optional cod. 8091810)
21 D.H.W. expansion vessel
22 Water pressure transducer
23 Safety valve
24 Condensation water trap
25 Limit stat 85°C
26 100°C safety stat
27 System delivery manifold
28 System return manifold
29 Tundish
30 Pressure reducing valve
31 Single check valve
32 Expansion relief valve
33 Tundish expansion relief valve
PUMP KIT 2/3 ZONE CONFIGURATION
(code 8100700/8100710)
34 Zone 2 and 3 system pump
35 Zone 2 and 3 single-acting valve
36 Zone 2 and 3 system bypass