Vanguard Heating VDDVF36STN/STP, VDDVF36PN/PP Pilot Assembly Adjustment, Burner Flame Adjustment

OWNER’S MANUAL

INSTALLATION

Continued

DECORATIVE FACING

Any noncombustible material may be used for facing (glass, tile, brick, etc.) as long as

Air Shutter Orifice Burner

WARNING: Improper installa- tion, adjustment, alteration, ser- vice, or maintenance can cause injury or property damage. Refer to this manual. For assistance or

the proper clearances are observed (see Clearances, page 4). IMPORTANT: Lou- vered openings must not be obstructed, and upper and lower panels must remain remov- able for servicing. Use only heat-resistant, noncombustible mortar or adhesive when

Firebox Bottom

Venturi

Tube

Burner Gas Line

additional information, consult a qualified installer, service agency, or gas supplier.

	Left
Back	Front

Right

Figure 44 - Installing Logs “A” (Top View)

		Left
Back		A	Front
	B	B
		A

Right

Figure 45 - Installing Logs “B ” (Top View)

		Left
	D		C
Back		E	Front

C D

Right

Figure 46 - Installing Twigs “C, D, E ” (Top View)

securing facing material.

Note: Combustible material, such as wood, that has been fireproofed is not considered noncombustible.

PILOT ASSEMBLY ADJUSTMENT

The pilot assembly is factory preset for the proper flame height. Alteration to these set- tings may have occurred during shipping and handling. If this is the case, some minor adjustment may be necessary and should be done by a qualified technician. To access the pilot assembly, the glass door must be opened. The proper settings for the thermopile height should be at a distance of 3/8" to 1/2" from the pilot flame as shown in Figure 47.

1/8"
(3mm)	3/8" - 1/2"
	(9.5mm-12.3mm)

Figure 47 - Correct Pilot Flame Pattern

BURNER FLAME ADJUSTMENT

The air shutter, located at the underside of the main burner (see Figure 48), has been factory preset to the proper air-to-gas ratio which results in an even, clean burning flame across the burner (see Figure 49). If readjustment is necessary, you can restore the proper air-to- gas ratio by loosening the air shutter screw and rotating the air shutter until the proper flame setting is achieved (the shutter's nor- mal setting is “full opened”. Do not forget to retighten the air shutter screws.

Figure 48 - Connecting Venturi and Orifice

CORRECT
	Long, Blue Flame
INCORRECT	with Yellow Tips
CLOSE
SHUTTER	Short, Sharp,
	Blowing Flame
INCORRECT
OPEN	Long, Uneven,
SHUTTER
	Yellow Flame

Figure 49 - Burner Flame Patterns

BURNER REMOVAL

CAUTION: Before proceed- ing, make sure the entire unit is cool.

1.Remove the top and bottom louvers and screen. Open the glass door (left or right side).

2.Carefully remove the log set.

3.Remove the screw that attaches the burner to the bracket.

4.Slide the burner towards the front of the unit, lift, and remove from the fire- box.

5.To reinstall the burner, slide the burner towards the rear of the unit and secure burner to bracket with screw.

CAUTION: Make certain the orifice is inside the venturi tube's air shutter, see Figure 48.

6.Replace the log set, close door with latches, and attach screen and louvers.

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