A.O. Smith BFM - 120, BFM - 100 manual

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4.3Replacement of burner pressure regulator or blank plate BFM30-50-80- 100

8.If the gas table (3.4.3 "Gas data") indicates that the main burner orifices need to be replaced:

a.Remove the main orifices (5).

b.Fit the main orifices from the conversion set. Check the required orifice diameter against the value given in the gas table (3.4.3 "Gas data"). The orifice diameter is stamped on the orifice itself.

9.If necessary, replace the blank plate or burner pressure regulator.

10.Re-fit the burner tray and fasten it using the screws.

11.Fit the gas coupling to the gas control and firmly tighten the connector(s) of the gas control.

12.Reconnect the leads of the spark electrode and flame probe to the burner control and fasten them in the strain relief.

13.Connect the gas supply..

14.Re-fit the protective cover.

Note

Refer to the electrical diagram (14 "Electrical diagram") for correct connection of the electrical components.

Referring to the gas table, determine whether the gas control needs to be fitted with a blank plate or burner pressure regulator. If necessary, replace them as follows:

1.Carry out steps 7 through 9 of orifice replacement (4.2 "Orifice replacement").

2.Remove the burner pressure regulator or blank plate from the appliance.

3.Fit the burner pressure regulator or blank plate from the conversion set.

4.Carry out steps 10 through 14 of orifice replacement (4.2 "Orifice replacement").

Note

Once you have completed the replacement of the components, you must check the supply pressure and burner pressure to match the intended gas category (3.11 "Checking the supply pressure and burner pressure").

Instruction manual BFM 41