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126703-01A
12
INSTALLATION
Continued
CAUTION: Do not use exces-
sive force to remove the knock-
out. Too much force may damage
the firebrick concrete insert.
A manual shutoff valve, complying with the
National Fuel Gas code, ANS Z223.1/NFPA
54
, must be included within 6' 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 2 manual shutoff valves inde-
pendently accessible from both rooms. Check
your local codes for applicable installation
requirements.
A 36" long 1/2" NPT SCHD 40 flexible gas
connector 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
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
Figure 14 - Sediment Trap Installation
Incoming
1/2" Gas Line
Permitted by
Local Codes
Sediment Trap
(Not Supplied)
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
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.
If a sediment trap is not incorporated as a part
of the gas utilization equipment, one shall be
installed as close to the inlet of the equipment
as practical at the time of installation, as per
ANS Z223.1/NFPA 54
. See Figure 14.
