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4
Warning: Should overheating occur, 1) shut off the manual gas shut off valve to control the
appliance; 2) DO NOT shut off the control switch to the blower
This power gas burner is designed to convert oil and/or coal fired boilers and furnaces to a gas-burning
appliance. The conversion must conform to local codes. In the absence of such codes, the American
National Standard Institute (ANSI) for the installation of gas conversion burners, Z21.8A-1990 and the
National Fuel Gas Code ANSI 223.1-1992 or current standards should be applied.
Two electrodes act as a sparker and a flame rod (See Fig. 1). Flame rectification by this flame
rod monitors the continued presence of the burner flame.
Fig. 1 Electrode and Flame Sensor Positioning
1/8" Spark Gap
3/16"
Projection of ceramic past retention plate
1"
0.65"
AIR FOR COMBUSTION
If the boiler or furnace room is unusually tight, or if the house has a ventilation fan, it is
recommended that the combustion air be supplied to the furnace room through intakes from the outside of
the building. The intakes must terminate facing down in order to avoid obstruction from rain, snow,
leaves, etc. Openings must have one square inch of free area per 10,000 BTU input rate (see Example 1).
Refer to the QHT boiler manual for instructions and recommendations for installing louvers, etc.
Example 1:
350,000 BTU/hr firing rate
( )
2
1
in
(
)
2
350
,
000
BTU
/
hr
*
=
35
in
10
,
000
BTU
/
hr
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