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Oven Valve
The oven control has a flame safety device built into the body of the thermostat.
Presence of a gas ignition source (pilot) is verified by a flame safety probe. This flame
safety probe actuates the internal safety device to allow gas into the oven burner
when the oven is turned on. If there is a loss of gas ignition during operation, the flame
safety device will close off gas flow to the oven burner and pilot.
The oven burner orifice is located on a brass injector stud at the rear of the oven
under the oven floor. This orifice is dedicated to the gas for which the oven is to be
used. The orifice is not adjustable. It must be changed completely to convert from one
gas to the other. DO NOT DISCARD THE UNUSED ORIFICE. It should be saved in order
to convert the range back to its original fuel.
ADJUSTING THE TOP BURNER AND OVEN FLAME
Oven
Pilot
Igniter
Pilot Orifice
Thermocouple
Oven
Pilot
Igniter
Pilot Orifice
Thermocouple
INCORRECT AND GOOD FLAME PATTERNS
If burner flames look like A, call for service.
B or C is normal burner flames, depending on the type of
gas you use.
With LP gas, some yellow tipping on outer cones is
normal.
QUALITY OF FLAMES
The combustion quality of burner flames needs to be
confirmed visually.
A. Yellow flames — Call for service
B. Yellow tips on outer cones — It is normal for
LP gas
C. Soft blue flames — It is normal for natural
gas
Incorrect:
flame
lifting off the burner
Good flame:
Well-defined blue
flame with slight yellow tipping
Oven
Pilot
Igniter
Pilot Orifice
Thermocouple
Top Burner Height
In the pilot assembly shown below, the LPG orifice is
0.14 mm. When doing the conversion from Propane to
Natural gas make sure the pilot orifice is changed to
the NG orifice sized at 0.2 mm. If you leave the LPG
orifice 0.14 mm in place, the pilot flame will may be
too small to keep the pilot lit.
Oven Pilot
The oven pilot is located along the left hand side of the oven burner. It is fastened to the
pilot assembly with the thermocouple and the electrode. The flame of the oven pilot
ignites main burner gas when the oven is turned on. If the pilot flame is not present, the
flame safety device will not allow pilot gas or main burner gas to flow.
THERMOCOUPLE
IGNITER
OVEN PILOT
PILOT ORIFICE