Vent Restrictor; Restrictor Adjustment - Avalon Radiant Plus Small Insert Owner's Manual

14
Installation (for qualified installers only)

Vent Restrictor

WARNING: Restrictor adjustment should only be done by a qualified installer.
Most installations do not require vent restrictor adjustment. Only those installations determined to be
over-drafting require adjustment. The best indication of over-drafting is a hyper-active flame pattern
(flames move too quickly). This is most common in tall vent configurations. Over-drafting may affect the
pilot, but this is not the best way to determine over-drafting.
More importantly, do not over-restrict the insert. This leads to ghosting or lifting flames, a very
unstable condition for both the burner and pilot. Reduce the restrictor setting if this occurs.
If restrictor adjustment is required, make sure to make the adjustment one step at a time. Wait a
minimum of 5 minutes after burner ignition to monitor flame quality.

Restrictor Adjustment

To access the restrictor, remove the baffle at the top of the firebox. Loosen the 4 screws holding it in
place, then slide it forward and down to remove.
1/4" Nutdriver
The restrictor is adjusted by loosening the two screws holding it in place. Slide the restrictor until the
correct notch falls over the screws and re-tighten. Replace the baffle.
Loosen the 2 screws on the exhaust restrictor. Slide
the restrictor to the correct restrictor position then
tighten the screws to secure the restrictor. In this
illustration, the restrictor in position 2.
© Travis Industries
Position # 1
Position # 2 (stock)
Position # 3
Position # 4
Position # 5
4151204
Baffle
Restrictor
100-01430