Vent Restrictor; Vent Installation - Travis Industries DVS GSR2 NB Owner's Manual

Installation (for qualified installers only)

Vent Restrictor

WARNING: Restrictor adjustment should only be done by a qualified installer.
Only those installations determined to be over-drafting require this adjustment. The best indication of
over-drafting is a hyper-active flame pattern (flames that move too quickly). If the air shutter is
constricted, the flames become short and yellow, yet still very active. Over-drafting may affect the pilot,
but this is not the best way to determine over-drafting. Over-drafting is most likely in tall venting
configurations. Do not over-restrict the vent (this leads to ghosting or lifting flames - reduce restrictor
setting).
The restrictor is adjusted with the face removed. Start with the restrictor in position number 1. Monitor
the flame for 5 minutes before adjusting. Move the restrictor a maximum two positions at a time by lifting
the adjustment plate and moving it until the correct notch falls into the slot on the adjustment bracket (use
a glove if the heater is hot - see illustration below). Monitor the flame for 5 minutes to determine correct
restrictor position and repeat restrictor adjustment if necessary.

Vent Installation

Secure the vent to the fireplace insert and termination kit using screws.
Exhaust (3" 76mm) Inlet (3" 76mm)
© Travis Industries
Adjustment
Plate
Adjustment
Bracket
Position 1 (factory setting).
3" (76mm) dia. Gas Liner
#4 #5 #6
#3
#2
#1
Duravent
Chimney Liner
Termination Kit
Inlet
Exhaust
4131108
Position 2
15
100-01317