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33ISDG Vent Free Gas Fireplace System
NOTICE: A qualified gas appliance installer must connect the heater to the gas supply.
Consult all local codes.
Use new black iron or steel pipe. Internally tinned copper or copper
tubing can be used per National Fuel Code, section 2.6.3, providing gas
meets hydrogen sulfide limits, and where permitted by local codes. Gas
piping system must be sized to provide minimum inlet pressure (Listed
on Data Plate) at the maximum flow rate (BTU/hr). Undue pressure loss
will occur if the pipe is too small.
A manual shutoff valve must be installed upstream of the appliance.
Union tee and plugged 1/8" NPT pressure tapping point should be
installed upstream of the appliance. Figure 13
To Fireplace
Stainless
Flexible Tube
Manual Shutoff
Valve
Figure 13 -
Gas Connection
IMPORTANT: Loosen the pipe adapter on the flex tube
before installing to the system piping.
Always use an external regulator for all propane/LPG heat-
ers only, to reduce the supply tank pressure to a maximum
of 13" w.c. This is in addition to the internal regulator in the
heater valve.
FP2447
gas connection
CHECk GAS TYPE: The gas supply must
be the same as stated on the heater's rating
plate. If the gas supply is different, DO
NOT INSTALL THE HEATER. Contact your
dealer for the correct model. Connecting to
the wrong gas type may result in property
damage or personal injury.
12
Pipe Coupling
Pipe
Locations Pressure
Tapping Point Instal-
lation
Gas Supply
Inlet
FP2447
3" Min.
To reach factory installed flex line, go through access door
on right or left side of firebox.
FP2789
Stainless Flex Line
Figure 14 -
Access Holes
FP2789
ISDG gas line access
Connecting directly to an unregulated
propane/LPG tank can cause an
explosion
CONNECT GAS LINE
Access Door
for Gas Line
Cord Protector
Manual Gas
Shutoff
(Recommended
Outlet Positioned
Vertical)
23D8036
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