Wolf FGB-K Series Installation And Maintenance Instructions For Contractors page 11

FGB-K wall mounted gas condensing combi boiler
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1 Flue pipe
2 Burner
3 Boiler water temperature sensor
4 Heating water heat exchanger
5 Gas fan
6 Mixing valve (venturi insert)
7 Gas valve
8 Inlet pipe
9 Trap
10 Control unit casing
11 DHW outlet temperature sensor
12 Plate heat exchanger
13 Air vent valve
14 Combustion chamber - high limit safety cut-out
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5. Set-up
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15 Expansion vessel
16 Pressure sensor
17 Return temperature sensor
18 Flue gas temperature sensor
19 3-way valve (motor)
20 Heating circuit pump with air vent valve
21 Flow limiter
22 Flow sensor
23 Heating flow
24 DHW connection
25 Gas supply pipe
26 Cold water connection
27 Heating return
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