Vent Restrictor; Vent Installation - Travis Industries DVS GSR 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 (especially if using an "Exhaust Only Re-Line"). Do not over-restrict the vent (this leads to
ghosting or lifting flames - reduce restrictor setting).
Adjustment
Plate
Adjustment
Bracket
This restrictor is in position 1
(factory setting).

Vent Installation

Inlet (3" 76mm)
Exhaust (3" 76mm)
© Travis Industries
To Access the Restrictor:
Remove the face.
To Adjust the Restrictor:
Determine a restrictor position. Start low (move
1
the restrictor a maximum two positions at a time)
and thoroughly test the heater before adjusting further.
Lift up the adjustment plate and move it so the correct notch falls
2
into the slot on the adjustment bracket.
#4 #5 #6
#3
#2
#1
To adjust, lift up on the
adjustment plate and push it back
(use pliers if necessary).
3" (76mm) dia. Gas Liner
Exhaust
Use hose-clamps
to secure the vent.
Alternative Method: use high-temperature
silicone and secure with screws.
4100105
WARNING: Use a glove to protect
your hand from burns.
This restrictor is in
position 2.
Use hose-clamps to
secure the vent.
High Wind
Termination Cap
Alternative Method: use
high-temperature
silicone and secure with
screws.
Simpson Duravent
6-5/8" to 3" & 3"
Co-Linear Adapter
Inlet
100-01245_000
15