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10.0
ADJUSTMENTS
10.1 RESTRICTING VERTICAL VENTS
Vertical installations may display a very active fl ame. If this appearance is not desirable, the vent exit must
be restricted using a restrictor vent kit. Refer to "ACCESORIES" in the "REPLACEMENTS" section for the
appropriate kit. This will reduce the velocity of the exhaust gases, slowing down the fl ame pattern and creating
a more traditional gentle fl ame appearance. Specifi c instructions are included with the kit.
10.2 PILOT BURNER ADJUSTMENT
Adjust the pilot screw to provide properly sized fl ame. Turn in a clockwise
direction to reduce the gas fl ow.
Inlet pressure can be checked by turning screw (A) counter-
clockwise until loosened 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, TIGHTEN SCREWS FIRMLY TO
SEAL. DO NOT OVER TORQUE. LEAK TEST.
W415-0748 / C / 08.20.12
77.3
PILOT
BURNER
THERMOCOUPLE
39.2
THERMOPILE
A
B
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