13369-1-0203
Page 9
GAS SUPPLY
T
he 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.
Recommended Gas Pipe Diameter
Pipe Length
Schedule 40 Pipe
Tubing, Type L
(Feet)
Inside Diameter
Outside Diameter
Nat.
L.P.
Nat.
L.P.
0-10
1/2"
3/8"
1/2"
3/8"
1.3 cm
1.0 cm
1.3 cm
1.0 cm
10-40
1/2"
1/2"
5/8"
1/2"
1.3 cm
1.3 cm
1.6 cm
1.3 cm
40-100
1/2"
1/2"
3/4"
1/2"
1.3 cm
1.3 cm
1.9 cm
1.3 cm
100-150
3/4"
1/2"
7/8"
3/4"
1.9 cm
1.3 cm
2.2 cm
1.9 cm
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:
— ANS Z21.24 Appliance Connectors of Corrugated Metal
Tubing and Fittings
— ANS 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.
Figure 9
Consult the current National Fuel Gas Code, ANSI Z223.1 CAN/
CGA-B149 (.1 or .2) installation code.
Installing a New Main Gas Cock
Each appliance should have its own manual gas cock.
In the state of Massachusetts the gas cock must be a T handle
type.
A manual main gas cock 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 installa-
tion 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 gas control is equipped with a captured screw type
pressure test point, therefore it is not necessary to provide a 1/8"
test point up stream of the control.
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 line be installed near the
gas inlet. 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.
When using copper or flex connector use only approved fittings.
Always provide a union so that gas line can be easily disconnected
for burner or fan servicing. See gas specification for pressure
details and ratings.
The appliance and it's 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 (3.5kPa).
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 (3.5kPa).
Attention! If one of the procedures results in pressures in excess
of 1/2 psig (14" w.c.) (3.5 kPa) on the fireplace gas valve, it will
result in a hazardous condition.
Checking Manifold Pressures
Both Propane and Natural gas valves have a built-in pressure
regulator in the gas valve. Natural gas models will have a
manifold pressure of approximately 3.5" w.c. (.871kPa) at the
valve outlet with the inlet pressure to the valve from a minimum
of 4.5" w.c. (1.120kPa) for the purpose of input adjustment to a
maximum of 10.5" w.c. (2.615kPa). Propane gas models will
have a manifold pressure approximately 10.0" w.c. (2.49kPa) at
the valve outlet with the inlet pressure to the valve from a
minimum of 11.0" w.c. (2.739kPa) for the purpose of input
adjustment to a maximum of 13.0" w.c. (3.237kPa).
