Product manual

6
Lighting Instructions:
Lighting instructions are located on the inside of the front panel.
Access to the mainfold and pilot are gained through the front panel.
Lighting pilot burner:
1 Turn on main gas supply to unit, on-off valve located behind the unit.
2 Turn the burner control knob to "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 the pilot safety valve and light through observation hole in manifold baffle.
Keep red button on pilot safety depressed for at least 1 minutes after pilot has lit. If pilot does not
light repeat this step.
4 To adjust the pilot flame, rotate knob next to the red button. Turning the knob, clockwise increases
the pilot flame. A properly sized pilot should be 1/2” to 3/4” long.
5 These units are equipped with 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 .
Lighting main burner:
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”.
Main burner air supply:
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 front of the burner.
Loosen the screws on the front of the burner, and adjust the air shutter to just eliminate the yellow
tips of the burner flame. Lock the air shutter in place by tightening the screws.
All burners are lit from constantly burning pilots. Turning the thermostat to the desired
temperature is all that is required to put the unit in service.
Do not permit fans to blow directly at the unit. Wherever posible, avoid open windows next to the
units’ sides or back. Avoid wall type fans which create air cross-currents within a 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 atmospheric pressure
will occur, 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 and thermostats must be checked and lubricated periodically. Consult the authorized
service representative in your area.
11
Maintenance:
Daily:
Thoroughly clean splash back, sides and front.
Weekly:
1. Clean unit thoroughly. Clean stainless steel or chromed surfaces with a damp cloth and polish
with a soft, dry cloth. A detergent may be used for cleaning. To remove discolorations, use a
nonabrasive cleaner.
2. To clean the bottom drip pan, remove the drip pan by reaching under the unit and lifting the rear
of the pan about one inch, slide the pan to the rear about one half inch, and dip the front end of
the pan free of the unit and slide pan forward between the front legs. To replace the pan, reverse
this procedure.
3. Burner air shutter openings must be kept clean.
4. Main burner ports must be kept clean. To clean burners, boil them in a strong solution of lye
water for 15 to 20 minutes. Then either brush with a wire brush or clean gas ports with a sharp-
pointed metal instrument to insure open ports.
Conversion
For conversion from natural gas to propane (L.P.).
This conversion should be done before connecting the unit to the gas supply.
1. Remove the knobs and front panel.
2. Remove the main burners.
3. Remove the oriface fittings from the valves.
4. Replace the oriface fittings with the size recommended for propane (L.P.).
5. Replace the main burners.
6. With the unit on its back or side, reverse the plug in the pressure regulatoer. The marking on the
plug while facing out should match the type of gas supplied.
7. Replace the front panel and knobs.
8. Continue with the installation.
Note: Manifold pressure should be checked after the unit is connected to the gas supply. It should
be 10 inches (25.4 cm) water column for (L.P.). Leak test all joints.
If you should have any questions or problems, contact your nearest APW/Wyott Service
Representative.