Gas Supply - Empire Comfort Systems DVLT series Installation Instructions And Owner's Manual

The gas pipeline can be brought in through the 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
Inside Diameter
Nat.
0-10ft 1/2"
0-3m 12.7mm
11-40ft 1/2"
4-12m 12.7mm
41-100ft 1/2"
13-30m 12.7mm
101-150ft 3/4"
31-46m 19mm
Notice: Never use plastic pipe. Check to confirm whether your local
codes allow copper tubing or galvanized.
Notice: 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.
Gas Supply Pressure (inches w.c.)
Minimum
Natural Gas 5.0"
LP (Propane) 10.8"
Manifold Pressure (inches w.c.)
Natural Gas
LP (Propane)
31259-3-0114

GAS SUPPLY

Tubing, Type L
Outside Diameter
L.P. Nat. L.P.
3/8" 1/2" 3/8"
9.5mm 12.7mm 9.5mm
1/2" 5/8" 1/2"
12.7mm 15.9mm 12.7mm
1/2" 3/4" 1/2"
12.7mm 19mm 12.7mm
1/2" 7/8" 3/4"
12.7mm 22.2mm 1.9 mm
Figure 6
Normal Maximum
7.0" *14.0"
11.0" 14.0"
Normal (HI)
3.5"
10.0"
Installing a New Main Gas Cock
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
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!
Notice: The gas controls are 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.
When using copper or flex connector use only approved fittings.
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 5.0" w.c.
(1.245kPa) for the purpose of input adjustment to a maximum of
14.0" w.c. (3.484kPa). 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 10.8" w.c.
(2.68kPa) for the purpose of input adjustment to a maximum of
14.0" w.c. (3.484kPa).
◄ ►
5"
(127mm)
▲
DV(LT/TT)
36 and 42
14-1/4"
(361mm)
▼
FRONT OF APPLIANCE TO
GAS LINE HOLE
Figure 7
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