Owner`s manual

15
Manual Safety ODS Pilot Valve (Fig. 15-1)
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. 15-2)
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
inlet point. Turn the unit on and to the HIGH position to get
the reading. Tighten the screws and repeat with the other
pressure inlet point. When fi nished, check both inlet points
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.
L.P. GAS
L.P. 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. 10" w.c. Min. 10" w.c.
GAS PRESSURE SPECIFICATIONS
Pressure tap
screw
Regulator
Fig. 15-1
Manual valve
Pressure tap
screw
Regulator
Fig. 15-2
Millivolt valve (series 12 shown)
Outlet
Inlet
WARNING: Do not connect this appliance directly to a high-pressure natural gas line or an unregulated L.P.
tank.
Test all gas joints from the gas meter to the valve assembly for leaks using a half-and-half soapy 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.