Gas Supply - Empire Comfort Systems DVCD32FP30P-1 Installation Instructions And Owner's Manual

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.
Recommended Gas Pipe Diameter
Schedule 40 Pipe
Inside Diameter
Pipe Length
Nat.
0-10 feet 1/2"
0-3 meters 12.7 mm
10-40 feet 1/2"
4-12 meters 12.7 mm
40-100 feet 1/2"
13-30 meters 12.7 mm
100-150 feet 3/4"
31-46 meters 19 mm
Note:
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.
— 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
appliance connector cannot exceed three feet in length.
Gas Supply Pressure (inches w.c.)
Minimum
Natural Gas
LP (Propane) 10.8"
Natural Gas
LP (Propane)
29354-1-1012

GAS SUPPLY

Tubing, Type L
Outside Diameter
L.P. Nat.
3/8" 1/2"
9.5 mm 12.7 mm
1/2" 5/8"
12.7 mm 15.9 mm
1/2" 3/4"
12.7 mm 19 mm
1/2" 7/8"
12.7 mm 22.2 mm
Figure 7
Normal Maximum
4.5" 7.0" 14.0"
11.0" 14.0"
Manifold Pressure (inches w.c.)
Normal (HI)
3.5"
10.0"
Each appliance should have its own manual gas cock.
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 installation or relocation.
Compounds used on threaded joints of gas piping shall be resistant
L.P.
checked for leaks by the installer. This should be done with a soap
solution watching for bubbles on all exposed connections, and if
3/8"
unexposed, a pressure test should be made.
9.5 mm
1/2"
12.7 mm
capped or plugged for pressure test. Never pressure test with
1/2"
12.7 mm
NOTE: The millivolt gas controls are equipped with a captured screw
3/4"
type pressure test point, therefore it is not necessary to provide a
19 mm
1/8" test point up stream of the control.
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
result in a hazardous condition.
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. (.871 kPa) at the valve outlet
with the inlet pressure to the valve from a minimum of 4.5" w.c.
(1.120 kPa) for the purpose of input adjustment to a maximum of
14.0" w.c. (3.484 kPa). Propane gas models will have a manifold
pressure approximately 10.0" w.c. (2.49 kPa) at the valve outlet
with the inlet pressure to the valve from a minimum of 10.8" w.c.
(2.68 kPa) for the purpose of input adjustment to a maximum of
14.0" w.c. (3.484 kPa).
Figure 8
Page 11