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14 Installation (for qualified installers only)
© Travis Industries 4080123 100-01174_002
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).
Remove the face.
To Adjust the Restrictor:
To Access the Restrictor:
This restrictor is in position 1
(factory setting).
This restrictor is in
position 2.
Adjustment
Bracket
To adjust, lift up on the
adjustment plate and push it back
(use pliers if necessary).
WARNING: Use a glove to protect
your hand from burns.
Adjustment
Plate
#1
#2
1
2
Determine a restrictor position. Start low (move
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
into the slot on the adjustment bracket.
#3
#4
#5
Vent Installation
Inlet (3”)
Exhaust (4”)
Inlet
Exhaust
Termination Cap
(Simpson Part # 991)
6-5/8” to 3” & 4” Co-
Linear Adapter
(Travis Part #
98900124)
3” dia. Gas Liner
4” dia. Gas Liner
Use hose-clamps
to secure the vent.
Alternative Method: use high-temperature
silicone and secure with screws.
Use hose-clamps to
secure the vent.
Alternative Method: use
high-temperature
silicone and secure with
screws.