A.O. Smith BFM - 120, BFM - 100 manual Conversion to a different gas category

is

4Conversion to a different gas category

Caution

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.
		Caution
		You must check the supply pressure and burner pressure once the
	conversion is complete.
4.1 Conversion
	1.	Isolate (10.3 "Isolating the appliance from the mains") the water heater from
		the power supply.
	2.	Shut off the gas supply.
	3.	Referring to the gas table (3.4.3 "Gas data"), determine whether the pilot
		flame orifice for the intended gas category is different from the one that is
		currently fitted. If so, replace (4.2 "Orifice replacement") it.
		Note
		The current gas category is stated on the type plate.
	4.	Referring to the gas table (3.4.3 "Gas data"), determine whether the main
		orifice for the intended gas category is different from the one that is currently
		fitted. If so, replace (4.2 "Orifice replacement") it.
	5.	Referring to the gas table (3.4.3 "Gas data"), determine whether the use of
		a blank plate or burner pressure regulator is required for the intended gas
		category. If this is different than for the current gas category,
		exchange (4.3 "Replacement of burner pressure regulator or blank plate
		BFM30-50-80-100")it.
	6.	Referring to the gas table (3.4.3 "Gas data"), determine whether the supply
		pressure and burner pressure for the intended gas category correspond with
		those for the current gas category, and adjust (3.11 "Checking the supply
		pressure and burner pressure") these if necessary.

Instruction manual BFM 39