Lighting instructions, Maintenance – APW Wyott GWW User Manual
Page 6

4. LIGHTING INSTRUCTIONS
Lighting instructions are located on the inside of the front panel. Access to the manifold and pilot valves are
gained through the front panel.
1.
Turn on main gas supply to unit.
2.
Turn the burner control knob to the OFF position. Open the front panel and wait at least 5 minutes
to allow any gas which may have accumulated in the burner compartment to escape.
3.
Depress red button on pilot safety valve and light through observation hole in manifold baffle. Keep
red button on pilot safety valve depressed for at least 1 minute after pilot has lit. If pilot does
not light, repeat this step.
4.
To adjust the pilot flame, turn adjustment screw next to the red button. Turning the adjustment
screw clockwise increases the pilot flame.A properly sized pilot should be 1/2 to 3/4 long.
5.
These units are equipped with a factory preset regulator with an outlet pressure of 4 W.C. (Water
column) for natural gas and 10 W.C. For propane gas supply, and should require no further
adjustment.
Since the burner is lit from constantly burning pilot, turn knob to HI to put the unit in operation; then
adjust to any desired position between LO and HI.
For efficient burner operation, a proper balance of gas volume and primary air supply must be
maintained which will result in complete combustion. Insufficient air supply results in a yellow
streaming flame. Primary air supply is controlled by an air shutter on the burner.
Loosen the screws on the front of the burner, and adjust the air shutter to eliminate the yellow on
the burner flame. Lock the air shutter in place by tightening the screws.
All burners are lit from constantly burning pilots, turning the control valve as desired is all that is
required to put the unit in service.
Do not permit fans to blow directly on the unit. Wherever possible, avoid open windows next to the
units sides or back. Avoid wall type fans which create air cross-currents within the room.
It is also necessary that sufficient air should be allowed to enter the room to compensate for the
amount of air removed by any ventilating system. Otherwise, a subnormal atmosphere will occur,
adversely affecting operation and causing undesirable working conditions.
A properly designed and installed hood will act as the heart of the ventilating system for the room or
area in which the unit is installed, and will leave the unit independent of changing draft conditions.
All valves must be checked and lubricated periodically.
Consult the authorized service
representative in your area.
Lighting Pilot Burner:
Lighting Main Burner:
Main BurnerAir Supply:
5. MAINTENANCE
Extended Shutdown:
Daily:
Turn the manual shutoff valve to OFF; turn all control knobs to the OFF position and shut off the
pilot flame by turning the adjustment screw on the pilot valve.
The entire flue duct opening, located on the rear of the unit, must be left uncovered.
1.
The appliance is not a cooking device. It is intended to keep hot cooked foods at serving
temperatures.
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