Pressure Check; Flame Adjustment; Flame Characteristics; Venturi Adjustment - Napoleon Vittoria GD19N Installation And Operating Instructions Manual

10.2 PRESSURE CHECK

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".
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.

10.3 FLAME ADJUSTMENT

Turn counter-
clockwise to
decrease fl ame
height

10.4 FLAME CHARACTERISTICS

It's important to periodically perform a visual check of the pilot and burner
fl ames. Compare them to the illustrations provided. If any fl ames appear abnor-
mal call a service person.

10.5 VENTURI ADJUSTMENT

This appliance has an air shutter that has been factory set open according to the chart below:
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!
GD19
NG 1/32"
LP 1/16"
ADJUSTMENT KNOB
Turn clockwise
to increase
fl ame height
39.5
FLAME
54.3
49.2
45
B
A
VENTURI
AIR SHUTTER
OPENING
ORIFICE
W415-0825 / 07.06.09