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If the boiler is connected to another gas type than that for
which the boiler has been set by the manufacturer, the gas
restriction ring must be replaced. Conversion sets for other gas
types are available to order.
Conversion of the restriction ring
► Switch o the boiler and remove the plug from the wall
outlet.
► Close the gas valve.
► Remove the front panel of the boiler.
► Disconnect the connection above the gas valve and turn the
gas mixing pipe to the back.
► Replace the O-ring and the gas restriction ring with the rings
from the conversion set.
► Reconstruct it in reverse order.
► Open the gas valve.
► Check the gas connections before the gas valve for
tightness.
► Put the plug in the wall outlet and switch on the boiler.
► Check the gas connections aer the gas valve for tightness
(during operation).
► Now check the adjustment of the gas/air proportion (see
§8.10).
► Place a sticker indicating the newly set gas type over the
existing sticker near the gas valve.
► Stick the same sticker near the data plate.
► Assemble the front panel of the boiler.
8.8 Conversion to another gas type
Gas mixture pipe
Connection
O-ring
Gas restriction ring
CAREFUL
► Only qualified competent gas safe
registered engineers may work on the
boiler.
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