Supplied By www.heating spares.co Tel. 0161 620 6677
42
Diagram 12.5
12 Servicing
1 Flue overheat thermostat
(manual reset control)
2 Air pressure switch
3 Fan
4 Automatic air vent
5 Expansion vessel
6 Flue hood
7 Heat exchanger
8 Flame sense electrode
9 Ignition electrode
10 Electronic igniter
11 Safety valve 3 bar
12 Gas valve
13 Domestic plate-to-plate heat exchanger
14 Priority pressure switch
15 Hydraulic 3-way valve
16 DHW temperature sensor
17 Condensate trap
18 Drain valve
19 Pump
20 Low water pressure switch
21 Heating circuit temperature sensor
22 Burner
23 Overheat thermostat
24 Flue heat recuperator
25 Flue overheat thermostat (probe)
1318 141517 16
19
21
20
22
23
24
7
10
11
12
8
4
5
3
1
2
6
9
25
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