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1.2. VF Components
1A – gas valve models 40 / 60
1B – gas valve models 80 / 100
2 – combustion air fan
3 – ionisation probe
4 – ignition probe
5 – ignition transformer
6 – flue gas temperature sensor
7 – automatic air vent
8 – return water temperature sensor
9 – differential air pressure switch
10 – high limit thermostat
11 - differential water pressure switch
12 – flow water temperature sensor
13 – water pressure switch
14 – non-return valve
15 – heating circulation pump
16 – drain valve
17 – safety valve (supplied loose)
18 – condensate siphon (supplied loose)
19 - control panel
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