Owner`s manual

15
NATURAL GAS PROPANE GAS
Outlet pressure reading:
(Flame adjustment on high)
3.5" w.c.
Outlet pressure reading:
(Flame adjustment on high)
10" w.c.
Inlet pressure reading
Max. 10.5" w.c.
Min. 5" w.c.
Inlet pressure reading
Max. 13" w.c.
Min. 11" w.c.
BURNER INSTALLATION (Cont.)
The burner system and its main gas valve must be disconnected from the gas-supply piping system during any
pressure testing of that system at test pressures in excess of
1
/
2
psig (3.5 kPa). The burner system must be
isolated from the gas-supply piping system by closing its equipment shutoff 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). This is accomplished
by closing the gas-supply line valve.
CHECKING GAS PRESSURE
Check the valve regulator pressure at the pressure inlet point.
Turn the inlet screw counterclockwise 2 or 3 turns and then
place the tubing of the pressure gauge over the pressure
inlet point. (The test “inlet” tap is marked IN.) After taking
the pressure reading, turn the inlet screw clockwise fi rmly to
reseal. Do not over-torque. Check for gas leaks.
Note: Gas pressure should be checked after connecting the
gas and prior to any further installation.
GAS PRESSURE SPECIFICATIONS
Fig. 15-1 Control valve
Inlet
Outlet
IMPORTANT
For all valves, the air MUST be purged from the gas line before the pilot will light and burn properly. The
time needed to purge will depend on the length of the gas line to the unit and the amount of time since
the unit or gas line was last used. It may take several minutes before all the air is purged and the pilot
will light and burn properly. Reference the LIGHTING INSTRUCTIONS section in this manual.
IMPORTANT
Check the gas pressure with the system burning and the control fully ON.