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HI/LO Variable
Inlet Pressure Tap
Flame Height
Adjustment
Manifold Pressure Tap
OUT
Main Gas Control Knob
Pilot Adjustment
Screw
OFF/PILOT/ON
NOTE: The piezo igniter is located
below the valve (see Figure 1).
Gas
Outlet
HI/LO Variable
Flame Height
Terminals
Adjustment
TPTH,TP & TH
Figure 2
- SIT Millivolt Gas Valve
Electronic Appliances -
To light electronic appliances refer to the detailed
lighting instructions found on Pages 24 and
25 of these instructions. Electronic appliance
lighting instructions may also be found on the
pull out lighting instruction labels attached to
the gas control valve.
If your electronic appliance is equipped with an
optional remote wall switch or remote control kit
the appliance main burner may be turned on and
off with the wall switch or remote control.
Manifold
Pressure
ON / OFF Switch
Port
Electronic Gas
Control Valve
Figure 3 -
Honeywell Electronic Gas Valve
Variable Flame Height Adjustment
(Millivolt Appliances only)
All Millivolt appliances are equipped with a
variable gas control valve. Flame height for
IN
these models may be adjusted through a range
between fixed low and high settings while the
appliance is in operation. Adjust the flame
height as desired after lighting the appliance
by rotating the variable adjustment control
knob (HI/LO) located on the front of the valve
(refer to Figure 2).
VENT OPERATION TEST
A vent operation test is required as part of the
Gas
installation to verify that proper venting condi-
Inlet
tions exist and should be done periodically to
ensure nothing has changed that would affect
proper venting of the appliance.
Procedure:
1. ENSURE APPLIANCE IS OFF (PILOT ONLY)
AND COOL.
2. Open both latches on one of the glass
Main Gas
enclosure doors and slightly prop it open at
Control Knob
the bottom (approx. 1/4" gap). See Figure
OFF/PILOT/ON
6 on Page 12.
3. Turn on all the exhaust fans in the dwelling
(and any other appliances which remove
air from the dwelling, such as a furnace or
clothes dryer, etc)..
4. Ensure that all the doors and windows in
the room where the fireplace is located are
closed.
5. Light the appliance (see Lighting Instruc-
tions, Pages 22 to 25). Adjust flame height to
highest setting and operate for approximately
5-10 minutes. Do not leave appliance unat-
tended.
6. Take a smoke producing device and move it
along the bottom edge of the glass door (where
it is cracked open). If smoke is drawn into the
firebox, the vent operation is adequate.
IF THE SMOKE IS NOT DRAWN INTO THE
FIREBOX, TURN THE APPLIANCE OFF AND
CALL A QUALIFIED SERVICE TECHNICIAN.
Inlet
Pressure
Port
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
SPILL SWITCH OPERATION
Manual-Reset (safety limit) Spill Switch
This appliance is equipped with a (safety limit)
spill switch that is designed to "trip" and discon-
nect the burner circuit if flue spillage occurs
(because of improper venting of combustion
products or vent blockage). If, during appliance
operation, the burner flame goes out (indepen-
dently of the burner OFF/ON wall switch), it may
be due to the operation of this (safety limit) spill
switch. If this switch "trips" it will need to be
manually reset by pressing the reset button on
switch (see Figure 4).
Procedure to Reset (safety limit) Spill Switch
ALLOW APPLIANCE TO COOL COMPLETELY
BEFORE ACCESSING AND RESETTING
To access the spill switch:
1. Pull off the top louvered panel.
2.
the switch (it will click & lock in).
The appliance should then relight and remain
lit. If this does not occur, turn off the appli-
ance and call a qualified service technician.
Press Reset Button on
Spill Switch
Remove Top
Louvered
Panel (or
optional
radiant panel,
if applicable)
Figure 4 - Spill Switch
Locate and p
9
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