Owner`s manual

14
Manual Safety ODS Pilot Valve (Fig. 14-1)
The pressure regulator is preset at the factory and
sealed to discourage tampering. If the pressure is not
as specifi ed, replace the regulator with the correct part
from the PARTS LIST in this manual.
Remove the
1
/
8
" pressure tap screw plug, located on
the side of the regulator body. Install fi tting and tubing
of pressure gauge. With the unit operating, take the
pressure reading. Reinstall the pressure tap screw and
check for leaks.
Millivolt Safety ODS Pilot Valve (Fig. 14-2)
The valve regulator controls the burner pressure. To take
a pressure reading, turn the inlet or outlet screw two to
three turns. Place the pressure gauge tubing over the
pressure tap. Turn the unit on and to the HIGH position
to get the reading. Tighten the screws and repeat with
the other pressure tap. When fi nished, check both taps
for leaks.
INSTALLATION (Cont.)
Important: For all valves, the air MUST be purged from the gas line before the ODS pilot will
light properly. The time taken to do this will depend on the length of gas line from the
meter to the unit and the length of time since the unit or gas line was last used (in the
case of non-use during warm weather, for example). It may take from 3 to 15 minutes
before all the air is purged and the ODS pilot will light properly. This is done using the
method for lighting the ODS pilot, but holding in the control valve for a longer period.
Follow the LIGHTING INSTRUCTIONS in this manual for the specifi c valve type.
NATURAL GAS
NATURAL GAS
MANUAL PRESSURE MILLIVOLT PRESSURE
Regulator pressure reading: 3.5" w.c. Outlet pressure reading: 3.5" w.c.
(Flame adjustment on high)
Gas inlet pressure: Max. 10.5" w.c. Inlet pressure reading: Max. 10.5" w.c.
Min. 5" w.c. Min. 5" w.c.
PROPANE GAS
PROPANE GAS
MANUAL PRESSURE MILLIVOLT PRESSURE
Regulator pressure reading: 10" w.c. Outlet pressure reading: 10" w.c.
(Flame adjustment on high)
Gas inlet pressure: Max. 13" w.c. Inlet pressure reading: Max. 13" w.c.
Min. 11" w.c. Min. 11" w.c.
GAS PRESSURE SPECIFICATIONS
Pressure tap
screw
Regulator
Fig. 14-1
Manual valve
Pressure tap
screw
Regulator
Fig. 14-2
Millivolt valve (series 12 shown)
Pressure tap outlet
Pressure tap inlet
WARNING: Do not connect this appliance directly to a high-pressure natural gas line or an unregulated propane
tank.
Test all gas joints from the gas meter to the valve assembly for leaks using a gas detector or half-and-half soap and
water solution after completing connection. DO NOT USE AN OPEN FLAME FOR CHECKING GAS LEAKS.
CHECKING GAS PRESSURE
Important: Check the gas pressure with the unvented gas log set burning and the control set to HIGH.
The gas log set 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. The gas log set 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. This is accomplished by closing the gas-supply
line valve, required to be present by NFPA 54.