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NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
27
Replace logs if removed for pilot inspection.
To light the burner; turn “ON” the remote wall
switch and rotate the gas valve control knob
counterclockwise to the “ON” position.
Figure 52
Proper Pilot Flame Appearance
Thermocouple
Thermopile
Pilot
Nozzels
3/8" Min.
(9 mm)
1/8" Min.
(3 mm)
Igniter Rod
Hood
HONEYWELL MILLIVOLT PILOT ASSEMBLY
Figure 51
Thermocouple
Thermopile
Pilot
Nozzels
SIT MILLIVOLT PILOT ASSEMBLY
3/8" Min.
(9 mm)
Igniter Rod
Hood
Proper Pilot Flame Appearance
WARNING
Never use an open flame to
check for leaks.
TEST ALL CONNECTIONS FOR GAS LEAKS
(FACTORY AND FIELD):
Turn on gas supply and test for gas leaks us-
ing a gas leak test solution (also referred to
as bubble leak solution). Note: Using a soapy
water solution is an effective leak test solution
but it is not recommended, because the soap
residue that is left on the pipes/fittings can
result in corrosion over time.
A. Light the appliance (refer to the lighting
instructions label in the control compartment
or in the Care and Operation Instructions
manual).
B. Brush all joints and connections with the
gas leak test solution to check for leaks. If
bubbles are formed, or gas odor is detected,
turn the gas control knob (off/pilot/on) to the
“OFF” position. Either tighten or refasten the
leaking connection, then retest as described
above.
C. When the gas lines are tested and leak free be
sure to rinse off the leak testing solution.
Step 6. VERIFYING APPLIANCE OPERA-
TION
Turn on burner then observe the individual
tongues of flame on the burner. Make sure
all ports are open and producing flame evenly
across the burner. If any ports are blocked, or
partially blocked, clean out the ports.
With the gas line installed, run initial system
checkout before closing up the front of the
appliance. Follow the pilot lighting instructions
provided in the Care and Operation Instructions
manual. For piezo igniter location see Figure 49
on Page 26 (millivolt appliances only).
Note: The (pull-out) Lighting instructions label
can be found in the control compartment (see
Figure 49 on Page 26).
When first lighting the appliance, it will take
a few minutes for the line to purge itself of
air. Once purging is complete, the pilot and
burner will light and operate as indicated in
the instruction manual. Subsequent lighting
of the appliance will not require such purging.
Inspect the pilot flame.
SIT and Honeywell Millivolt Appliance
Checkout
The pilot flame should be steady, not lifting
or floating. Flame should be blue in color with
traces of orange at the outer edge.
The top 3/8" (10 mm) at the pilot generator
(thermopile) and the top 1/8" minimum (tip)
of the quick drop out thermocouple should
be engulfed in the pilot flame. The flame
should project 1" (25 mm) beyond the hood
at all three ports (Figure 51 - SIT, Figure 52
- Honeywell).
To light the burner; rotate the gas valve control
knob counterclockwise to the “ON” position
then turn “ON” the OFF/ON switch (installed
at Step 4).