Atwood Open Burner, Service Manual

Page: 9 / 36

9
Sequence of Operation—Models 33, 34 and 35
Standard Pressure Regulator— This valve receives up to
13” W.C. gas pressure from regulated LP systems and re-
duces the pressure to 10” W.C. to the manifold.
Manifold—
a continually pressurized pipe distributing gas
to top burner valves and oven thermostat.
Oven Thermostat— supplies gas to the oven pilot, and
main burner; regulates oven temperature.
Pilot Assembly— consists of a thermocouple and a pilot
hood where gas passing through the orifice is directed to-
ward the oven burner pilot holes. The user holds the magnet
in initially by pushing the knob in at the “pilot/push/hold”
rotation and manually lighting the pilot. After approxi-
mately 5 seconds, the thermocouple input will hold the
magnet in the open position and the user can release the
knob and adjust to the desired temperature.
Oven Thermostat - senses oven temperature by means of a
thermal bulb located in the upper rear of the oven. The oven
control knob is set to the desired temperature calling for
heat; the fluid expands in the bulb as the temperature rises,
moving the seat in the thermostat from full open to partial
open as the desired temperature is reached, thus maintaining
the set temperature. The gas is passed from the thermostat
to the orifice block in the main burner, entering the burner
and igniting from the pilot.
Oven Burner— The oven burner remains on once the ther-
mostat is turned on. The size of the flame changes to a high
or low flame by the thermostat as regulated by the user set-
ting the knob and the thermostat bulb sensing a satisfied
oven temperature.
Note: The pilot gas line will remain open as long as the
pilot is lighted and the thermocouple senses flame. If the
pilot goes out, the magnet will drop out and shut off gas
flow to the pilot.
Note:
Component
appearance may
vary from model to
model.