Travis Industries 21 TRV Installation Manual page 47

Optional Equipment
3 Follow the directions below to replace the orifice.
c
Use a 1/2" open end wrench
to unscrew both burner
orifices.
Front Orifice
© Travis Industries
b
Remove and discard the
gaskets on the two orifices.
Back Orifice
5/16"
5/16"
NOTE:
Screw the LP orifice in so the orifice shoulder protrudes
5/16" (indicating full insertion).
(for qualified installers only)
Front Orifice
1/2" Wrench
Look here for the orifice identification.
4080207
Slide the air shutter all
a
the way to the left.
Back Orifice
d
Apply thread sealant to
the new orifice and install.
LP NG
#66 #55
Front
#65 #55
Rear
4 7
100-01185_000