16 |
Air Shutter (Venturi)
The air shutter plays a very important role in flame
appearance and combustion quality. The shutter adjusts
how much air gets mixed with the gas before it ignites.
We recommend starting the fireplace and allowing it to
heat up for 15 minutes before making final adjustments.
Adjust the shutter as follows:
1.
Remove outer right glass
(see page 20).
2.
Remove right louver
(see page 21).
3.
Locate air shutter linkage knob (see photo) and
adjust as needed.
Lean (more primary air): Pull knob outward to make
flame appear more blue and low.
Rich (less primary air): Push knob inward to
make flame appear more yellow and tall. Flame
will continue to richen up during operation
creating a potential for gradual soot build-up.
Pilot Light
The pilot flame should cover 1/4” to 1/2” (7 to 13mm) of
the flame sensor (see photo). The pilot flow adjustment
is set to maximum from the factory and should not need
adjustment. However, should the need arise, adjust pilot
flame as follows:
1.
Remove outer right glass
(see page 20).
2.
Remove right louver
(see page 21)).
3.
Locate the pilot adjustment screw
on the valve (see photo).
4.
Turn the adjustment screw to alter
the pilot gas flow as needed.
.375-.500
(10-13mm)
Flame Sensor
• If you cannot attain a healthy flame by making air
shutter adjustments, you may have the incorrect
restrictor setting or a venting problem.
• Propane units have very little to no adjustment.
• More details can be found in the venting section of this
manual.
• Caution: Wear heat resistent gloves when making
adjustments to the air shutter. Perform final
adjustments after 15 minutes.
Pilot Adjustment
Screw
Manifold
Pressure Tap
Inlet
Pressure Tap
Stepper
Regulator
Notes:
Maintenance and Service