Vanguard FBST - Manual (Page 11)

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INSTALLING GAS LINE
WARNING: A qualified ser-
vice person must connect heater
to gas supply. Follow all local
codes.
IMPORTANT: See Connecting to Gas Supply in
your log set owner’s manual for details on gas
hookup.
You may run the gas line from either side of the
firebox (see Figure 11). When you have deter-
mined how the gas line will run, locate one of
the recessed knockouts in the firebrick floor (see
Figure 12). Firmly tap the center of the knockout
with a chisel until it is released. Carefully chisel
the rough edges of the hole you have made to
smooth edges. This hole will line up with the hole
in the metal floor.
CAUTION: Do not use exces-
sive force to remove the knock-
out. Too much force may damage
the firebrick concrete insert.
iNSTaLLaTiON
Continued
A manual shutoff valve, CSA certified and com-
plying with the National Fuel Gas code, ANS
Z223.1/NFPA 54, must be included within (6') six
feet of the vent-free firebox gas supply system. It
may be convenient to install the gas shutoff outside
the vent-free firebox enclosure where it can be
accessed with a key through a wall as shown in
Figure 13. Depending on the type of installation,
some local codes may require you to install two
(2) manual shutoff valves independently accessible
from both rooms. Check your local codes for ap-
plicable installation requirements.
A 36" long 1/2" NPT SCHD 40 flexible gas con-
nector line complying with the National Fuel Gas
code ANS Z223.1/NFPA 54, may be run from the
regulator to the incoming 1/2" NPT black iron
gas line. You may also route the incoming 1/2"
NPT black iron gas line directly to the appliance
regulator.
The incoming gas line may be routed into the vent-
free firebox either from the left or right hand sides
(see Figure 11). Remove the gas line cover plate
from the vent-free firebox’s outer surround at the
location to be used.
Figure 11 - Installing Gas Line and
Manual Shutoff Valve
Manual Shutoff Valve is
Located Under Firebox
Floor on Either Side
Gas Line Installed
Through Access Hole
on One Side of Firebox
Alternative
Gas Line
Location
Figure 12 - Location of Knockouts for
Gas Line
Extension
Key
Shut-Off Valve
Figure 13 - Typical Exterior Wall Gas
Shut-Off Installation
Knockouts
3/4" Thick Liner Remove This Area
Firebrick Floor