HP SU-2A manual Burner Description, Chart 1 Natural Gas and LP

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Chart 1: Natural Gas and LP

Burner	Length	Firing Rate		Primary	Secondary	Total	Total	Gas
Model	of Flame			Electric	Electric	Watts	Amps	Conn.
	Tube	Min	Max	Input	Input
		BTU/H	BTU/H
				120 Volt
SU-2A	4 ¼”	50,000	250,000	60 Hz	24 Volts	150	3 or	½”
				1 Ph		Max	less

-Control System: Fenwal Model 2466H936-111 with 15 Second Pre-Purge and 60 Second Post-Purge OR Honeywell S89F with 34 second Pre-Purge.

-The system uses a remote ignition system with a separate Ignition Transformer.

-Gas Valve: VR8205A 2008 or VR 8305 P with step opening (special applications).

BURNER DESCRIPTION

The SU-2A Gas Burner is a fully automatic, flame retention burner and is suitable for combustion of natural gas or LP. Changing orifices alters the firing rate. The combustion air can be adjusted for proper O2 or CO2 by the dial located on top of the burner housing, which allows the air to flow more or flow less within the burner.

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. With three trials for ignition consistency (with Fenwal control), trouble free, safe operation is achieved.

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 pump or 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 for the Installations of gas conversion burners, ANSI Z21.17-1984, Z21.8A-1990 and the National Fuel Gas Code ANSI 223.1-1992 or current standards should be applied.

Fig. 1 Electrode and Flame Sensor Dimensions