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GAS SUPPLY
The gas pipeline can be brought in through the right or left side of
the appliance. Consult the current National Fuel Gas Code, ANSI
Z223.1 CAN/CGA-B149 (.1 or .2) installation code.
2”
4 5/8”
SIDE OF FIREBOX
Figure 22
Figure 23
Recommended Gas Pipe Diameter
Pipe Length
Schedule 40 Pipe
Inside Diameter
(in inches)
Tubing, Type L
Outside Diameter
(in inches)
Nat.
L.P.
Nat.
L.P.
0-10 feet
1/2
3/8
1/2
3/8
10-40 feet
1/2
1/2
5/8
1/2
40-100 feet
1/2
1/2
3/4
1/2
100-150 feet
3/4
1/2
7/8
3/4
Note:
Never use plastic pipe. Check to confirm whether your
local codes allow copper tubing or galvanized.
Note:
Since some municipalities have additional local codes, it is
always best to consult your local authority and installation code.
The use of the following gas connectors is recommended:
— ANSI Z21.24 Appliance Connectors of Corrugated Metal Tubing
and Fittings.
— ANSI Z21.45 Assembled Flexible Appliance Connectors of
Other Than All-Metal Construction
The above connectors may be used if acceptable by the authority
having jurisdiction. The state of Massachusetts requires that a
flexible appliance connector cannot exceed three feet in length.
A gas valve and ground joint union should be installed in the gas
line upstream of the gas control to aid in servicing. It is required
by the National Fuel Gas Code that a drip leg be installed near
the gas inlet.
See Figure 24.
This should consist of a vertical
length of pipe tee connected into the gas line that is capped
on the bottom in which condensation and foreign particles may
collect.
Figure 24
Installing a New Main Gas Supply Knob (Check Local Code)
Each appliance should have its own manual gas supply knob.
A manual main gas supply knob should be located in the vicinity
of the unit. Where none exists, or where its size or location is not
adequate, contact your local authorized installer for installation or
relocation.
Compounds used on threaded joints of gas piping shall be resistant
to the action of liquefied petroleum gases. The gas lines must be
checked for leaks by the installer. This should be done with a soap
solution watching for bubbles on all exposed connections, and if
unexposed, a pressure test should be made.
Never use an exposed flame to check for leaks. Appliance must
be disconnected from piping at inlet of control valve and pipe
capped or plugged for pressure test. Never pressure test with
appliance connected; control valve will sustain damage!
NOTE:
The millivolt gas controls are equipped with a captured screw
type pressure test point, therefore it is not necessary to provide a
1/8 inch test point up stream of the control.
On direct ignition valves, hex plugs may be replaced with hose fittings
for pressure checks, then reinstalled before operating fireplace.
When using copper or flex connector use only approved fittings.
The appliance and its individual shut off valve must be disconnected
from supply piping system during any pressure testing of that system
at test pressures in excess of 1/2 psig (3.5 kPa).
The appliance must be isolated from the gas supply piping system
by closing its individual manual shut off valve during any pressure
testing of the gas supply piping system at test pressures equal to
or less than 1/2 psig (3.5 kPa).
Attention!
If one of the procedures results in pressures in excess
of 1/2 psig (14-in w.c.) (3.5 kPa) on the fireplace gas valve, it will
result in a hazardous condition.
