4 conversion to a different gas category, Conversion to a different gas category, Nversion – A.O. Smith 120 through 250 Series User Manual

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Instruction manual BFC

Conversion to a
different gas category

Attention
The conversion may only by carried out by an authorised installation

engineer.

If the appliance must operate on a family of gases (LP gas or natural gas) or
other gas category than that for which the appliance has been set at the
factory, the appliance will have be adapted using a special conversion kit.

Attention
You must check the supply pressure and burner pressure once the

conversion is complete.

Orifice assembly

Legend
1. connector
2. gas coupling
3. air supply hose
4. pressure switch hose
5. gas/air distribution plate
6. stamped figures