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Innovative Hearth Products
BRT40ST See-Through B-Vent Gas Fireplaces
Variable Flame Height Adjustment
Manifold Pressure Port
SIT Millivolt Gas Valve
NOTE: The piezo igniter is located on the modesty panel - refer to Figure 34.
Figure 35
Variable Flame Height Adjustment
( Millivolt Appliances only)
All Millivolt appliances are equipped with a variable gas control valve. Flame height for these
models may be adjusted through a range between fixed low and high settings, alternately, while
the appliance is in operation.
Adjust the flame height as desired after lighting the appliance by rotating the variable adjustment
control knob located on the front of the valve (refer to Figure 35). (An extension is provided to
this knob so that the adjustment may be made at the modesty panel).
32
Inlet Pressure Port
Main Gas
Control Knob
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
900301-00 05/2016
Outside Combustion Air Controls
Many appliances are equipped, when installed,
with an outside (make-up air) vent system
that is designed to provide the appliance with
outside make-up air for combustion when in
operation. The outside air control lever for the
outside air system is standard on all appliances
but should not be operated if the complete
system is not installed. Refer to Figure 36.
When the complete outside air vent system is
installed, the installer will remove the securing
screw from the combustion air control lever
located on the right side of the fireplace opening.
If the securing screw has not been removed
and you have reason to believe that you have
a complete outside air system, contact your
distributor to have your appliance inspected
for the presence of the complete system. DO
NOT assume that you have this system in place.
Outside Air Control Lever with Stop Behind
Securing Screw
Outside Air Shutter in the
Closed Position
Control Compartment Access Panel
Outside Air Control Lever
and Securing Screw Location
Figure 36
Operation
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