GENERAL
11
CH flow
CH return
GAS
1
DHW outlet
Cold water inlet
19
20
22
23
31
21
20
17
16
27
6
2 3
11
10
10
7
9
8
30
24
29
28
18
25
14
12
12
4
5
26
15
13
32
1 Primary heat exchanger
2 CH flow temperature sensor
3 Safety thermostat
4 Fan
5 Gas valve
6 CH return temperature sensor
7 Condensate drain siphon
8 Gas diaphragm
9 Sealed chamber
10 Drain
11 Bleed manifold
12 Automatic vent valve
13 CH circuit expansion vessel (12 litres)
14 CH/storage cylinder pump
15 Boiler drain cock
16 Delivery group
17 Water pressure switch
18 Drain cock for delivery group
19 System safety valve (3 bar)
20 Non-return valve
21 Non-return valve and by-pass
22 Automatic bypass
23 Deviator valve
24 130 litre storage cylinder
25 DHW circuit expansion vessel (6 litres)
26 DHW circuit safety valve (8 bar)
27 CH circuit fill cock
28 Magnesium anode
29 Flangia bollitore
30 Storage cylinder flange
31 Bypass pipe
DHW recirculation
WATER CIRCUIT
