FireplaceXtrordinair ProBuilder 54 Installation Manual page 65

7. Follow the directions below to replace the orifice.
Remove the manifold gasket (note orientation - the larger side goes
a
downwards). REPLACE THE GASKET AFTER INSTALLING LP ORIFICE.
d
Screw the LP orifice until orifice
protrudes 15/16" (23.8mm)
indicating full insertion (use
wrench to secure manifold when
re-attaching orifice).
8. Reinstall the orifice gasket that was removed in step 6.
9. Reinstall the air shutter retainer removed in step 4.
© Travis Industries
Installation
(for qualified installers only)
9/16" Wrench
1/2" Wrench
Rear
Orifice
PB 42 Lin.
PB 54 Lin.
Use a 9/16" wrench to secure the
b
manifold while removing the orifice
with a 1/2" wrench.
Apply thread sealant to the LP orifice prior
to installation. Use the chart below to
identify the correct orifices.
15/16"
23.8mm
Look here for the orifice identification
1.45mm
1.65mm
4/19/23 - 1453 PB 42 & 54 MV/GSB2/GSR2 Install
c
LP NG
#42
#36
The longer portion
of the gasket should
be at the bottom.
65