Wells WFGA-60FS Burner Assembly Instructions, Orifice Installation, Shutter Adjustment

BURNER ASSEMBLY INSTRUCTIONS

A. ORIFICE INSTALLATION
1.	Slide the brass ORIFICE through the ring on the	ORIFICE
	end of the BURNER, threaded end pointing out.
2.	Slide the ORIFICE WASHER over the threads
	of the ORIFICE.	30º
3.	Screw the ORIFICE HOLDER on to the ORIFICE.
	Tighten the orifice holder so that the compression	BACK-UP
	fitting sits pointing toward the outside and down at
		WRENCH
	a 30º angle.	SHUTTER
4.	Always use a back-up wrench when tightening	BURNER
	the orifice to avoid bending the orifice bracket.	ORIFICE WASHER
B. SHUTTER ADJUSTMENT		ORIFICE HOLDER
1.	This is an initial adjustment. Final adjustment
	will be made while the burner is in operation.
2.	Loosen the holding screw. Set the shutter so
	that 1/8" of the shutter is exposed.
	Tighten the screw.

C. BURNER TUBES

1. BURNER TUBES are handed right and left. Visually, the row of burner slots point up and slightly inward. Also, the tops of the rear mounting tabs slant toward the center.

D. IGNITOR ASSEMBLY

1. IGNITORS are handed right and left. Visually:

a. Right: The flame sensor (right probe) is bent at a 90º angle;

b. Left: The flame sensor (right probe) is nearly straight.

2. When properly assembled, all three probes will lay on a line drawn from the center of the burner tube through the center of the burner slots.

3. All three probes should be .5" from the outer surface of the burner slots.

4. The gap between the ignitor and ground probes must be .10".

5. To insure proper ignition, the gap between the ignitor and ground probes must be directly in the gas stream.

6. To insure proper flame detection, the tip of the flame sensor probe must be directly in the gas stream.

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