Cgb-2 Appliance Description - Wolf CGB-2 Service Instructions Manual

CGB-2
Wall mounted gas condensing boiler
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1 Gas fan
2 Expansion vessel
3 Mixing valve
4 Gas valve
5 Trap
6 3-way valve
7 Control unit enclosure
(GBC-e burner control unit, top)
(HCM-2 control unit PCB, bottom)
8 Flue pipe
9 Combustion chamber cover HLSC (thermostat)
10 Combustion chamber temperature sensor
(eHLSC sensor)
3064812_201804
3. CGB-2 appliance description
11 Burner
12 Heating water heat exchanger
13 Flue gas temperature sensor
14 Pressure sensor
15 Return temperature sensor
16 Boiler water temperature sensor
17 Heating circuit pump with air vent valve
22 Heating return
23 Cylinder return
24 Gas supply pipe
25 Cylinder flow
26 Heating flow
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