Wolf CGB-75 Instructions Manual page 64

1)
Unplug the connector   (first undo Phillips head
screws)
2)
Undo gas connection at the gas combination valve
3)
Undo the mixing chamber from the fan (three Allen screws
5 mm), and remove air inlet pipe where necessary.
Re-assemble in reverse order.
Note: During the conversion from LPG to natural gas, the gas combination valve must be replaced and the flue gas orifice
plate (see page 5/6) must be removed prior to assembly.
64
Conversion to natural gas H (G20)
4)
5)
6)
4 x screws
SW8
Undo the gas combination valve from the mixing chamber
for gas/air (four SW8 screws).
Gas restrictor
Remove integral gas restrictor and replace with the gas
restrictor designed for the new gas type (in accordance
with the table on page 66).
O-ring
After assembly of the gas restrictor, gas combination valve
and air inlet pipe, push the O-ring lubricated with silicone
grease into the packing groove of the fan and refit the
mixing chamber.
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