Wolf CGB-75 - Conversion to Natural Gas E;LL (G20;G25) (if Necessary)

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14.ConversiontonaturalgasE/LL
(G20/G25)(ifnecessary)
Asdelivered,thegascondensingboilersCGB-75/CGB-100areequippedforoperationwithnaturalgasE/H(G20).
For operation with natural gas LL (G25), the gas restrictor must be replaced.
The necessary gas restrictor with the code number “1260” for operation with natural gas LL (G25) is included in the scope of delivery
and is attached to the gas pipe for use.
Re-assemble in reverse order.
Note: DuringtheconversionfromLPGtonaturalgas,thegascombinationvalveandtheuegasoriceplate(seepage24/25)
must be removed prior to assembly.
5)
Remove integral gas restrictor and replace with the gas
restrictor for the new gas type (in accordance with the
table on page 25).
Gas restrictor
4)
Undo the gas combination valve from the mixing chamber
for gas/air (four SW8 screws).
4 x screws
SW8
Unplug the connector  (rstunscrewthePhillipshead
screws)
1)
Undo gas connection at the gas combination valve
2)
3)
Unscrew the mixing chamber from the fan (three Allen screws 5
mm), and remove air inlet pipe if necessary
6)
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 ret the
mixing chamber.
O-ring
1
2