Empire Comfort Systems DVLXG75BP90N-1 Installer's Manual page 21

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-in w.c. (.871 kPa) at the valve
outlet with the inlet pressure to the valve from a minimum of
4.5-in w.c. (1.120 kPa) for the purpose of input adjustment to
a maximum of 14.0-in w.c. (3.484 kPa). Propane gas models
will have a manifold pressure approximately 10.0-in w.c. (2.49
kPa) at the valve outlet with the inlet pressure to the valve from
a minimum of 10.8-in w.c. (2.68 kPa) for the purpose of input
adjustment to a maximum of 14.0-in w.c. (3.484 kPa).
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.
GAS VALVE
INLET
PRESSURE
TAP
Test For Leaks On Exposed Connections
Never use an exposed flame to check for leaks.
Turn off the fireplace. Compounds used on threaded joints of
gas piping must be resistant to the action of liquefied petroleum
gases. Check all gas connections for leaks with a leak test solution
or soap solution. Rinse off all of the solution after testing.
DO NOT get solution on electronic controls.
Test For Leaks On Unexposed Connections
Perform a pressure test on all unexposed connections. Never
pressure test with fireplace connected; control valve will sustain
damage. Disconnect the fireplace from piping at the control valve
inlet and cap the pipe before pressure testing.
GAS SUPPLY (CONT'D)
CAUTION
OUTLET
PRESSURE
TAP
DANGER
NOTICE: The IP valve is equipped with a captured screw type
pressure test port, therefore it is not necessary to provide a test
point upstream.
Disconnect the appliance and its individual shut-off valve from
the gas supply piping system before any pressure testing of that
system at test pressures in excess of 1/2 psig (3.5kPa). Isolate
the appliance from the gas supply piping system by closing its
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).
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.
Gas Line Connection
Remove the access panel from the right side of the fireplace
to access the gas valve, gas flex line, junction box, and system
wiring.
Attach the gas flex line to the pre-installed gas line. Refer to the
previous page for details on the installation requirements for the
gas supply line.
2 1/8
5
The cross section image below shows the gas connection point
in the fireplace.
GAS
25 27/32
CONNECTION
POINT
WARNING
Gas Line Access Junction Box
GAS LINE
ACCESS
21