Napoleon Fireplaces GDS60N Pilot Burner Adjustment, Venturi Adjustment, Flame Characteristics

FIGURE 10.2

42

10.0ADJUSTMENT

10.1PILOT BURNER ADJUSTMENT

Adjust the pilot screw to provide properly sized flame. Turn in a clockwise direction to reduce the gas flow.

Check Pressure Readings:

Inlet pressure can be checked by turning screw (A) counter- clockwise 2 or 3 turns and then placing pressure gauge tubing over the test point. Gauge should read 7” (minimum 4.5”) water column for natural gas or 13” (11” minimum) water column for propane. Check that main burner is operating on “HI”.

A B

FIGURE 10.1 PILOT SCREW

Outlet pressure can be checked the same as above using screw (B). Gauge should read 3.5” water column for natural gas or 10” water column for propane. Check that main burner is operating on “HI”.

AFTER TAKING PRESSURE READINGS, BE SURE TO TURN SCREWS CLOCKWISE FIRMLY TO RESEAL. DO NOT OVERTORQUE.

Leak test with a soap and water solution.

10.2 VENTURI ADJUSTMENT

39.4

This model has an air shutter that has been factory set open according to the chart below:

Regardless of venturi orientation, closing the air shutter will cause a more yellow flame, but can lead to carboning. Opening the air shutter will cause a more blue flame, but can cause flame lifting from the burner ports. The flame may not appear yellow immediately; allow 15 to 30 minutes for the final flame color to be established.

AIR SHUTTER ADJUSTMENT MUST ONLY BE DONE BY A QUALIFIED INSTALLER!

VENTURI

BURNER

AIR

SHUTTER

OPENING

ORIFICE

49.1

	GDS60
NG	3/8”
LP	5/16”

10.3 FLAME CHARACTERISTICS

It’s important to periodically perform a visual check of the pilot and burner flames. Compare them to the illustra-
tions provided. If any flames appear abnormal call a service person.
			3/8” - 1/2”
		PILOT
	ELECTRODE	BURNER	FIGURE 10.3b
	FLAME
	SENSOR
	FIGURE 10.3a	FLAME MUST ENVELOP
		UPPER 3/8” TO 1/2” OF
		FLAME SENSOR
				54.1

10.4 RESTRICTING VERTICAL VENTS - MODEL GDS60

Vertical installations may display a very active flame. If this appearance is not desirable, the vent exit must be re- stricted using the restrictor vent kit, GDSRP-KT. This will reduce the velocity of the exhaust gases, slowing down the flame pattern and creating a more traditional gentle appearance. Specific instructions are included with the kit.

W415-0788 / A / 09.22.09