Boiler Schematic - Saunier Duval ISOFAST F 28 E Installation And Operating Instructions Manual

BOILER SCHEMATIC

1 - Domestic thermistor
2 - Three way valve
3 - Gas valve
4 - Gas valve ignition module
5 - Heating element
6 - Domestic storage vessel
7 - Burner
8 - Ignition electrode
9 - Combustion chamber
10 - Storage vessel thermistor
11 - Primary heat exchanger
12 - Air pressure switch
13 - Heating safety valve (3 bar)
14 - Electronic control (PCB)
15 - Domestic water flow sensor
23
21
22
20
19
18
17
16
15
14
25
13
Diagram 12
2 6
16 - Bypass
17 - Domestic heat exchanger
18 - Pump
19 - Expansion vessel
20 - Heating thermistor
21 - Overheat safety thermostat
22 - Flame sense electrode
23 - Fan
24 - Storage vessel safety valve (8 bar)
25 - System pressure sensor
A - Heating return
B - Cold water inlet
C - Heating flow
D - Domestic hot water outlet
E
A B C
- Gas
D F
12
11
9
8
7
4
3
2
1
24