– 11 –
Surface Burner Adjustments
Standard adjustments to the air shutter and gas
metering orifices are not possible on sealed
burners.
If burner flames appear to be abnormal, check the
following:
• Check gas pressure available to the burners.
The required operating pressure is 5" W.C.P.
Natural Gas or 10" W.C.P. L.P. (Propane) Gas.
• Check for drafts entering the burner box from
behind the cooktop.
• Check for blockage or partial blockage of the
orifice. Inspect the orifice to be sure it has
been drilled on center and is free of debris or
burrs.
• Check the burner alignment per
Burner
Alignment.
• If the cause of the problem cannot be found,
installing an orifice with smaller diameter
openings may solve the problem. In high
altitude (above 6000 ft.) installation, the
orifices will usually have to be downsized.
Flame Characteristics
Burner flames should be blue and stable with no
yellow tips. (Yellow tipping may be normal for LP
gas.) The flame should not have excessive noise
or lifting of the flame from the burner. If any of
these conditions exist, check the burner ports for
blockage.
Orifice Conversion Kits
Burner orifice conversion kits are available for:
• Converting burner orifices from LP to Natural
Gas and from Natural Gas to LP
• Installation at high altitudes
Natural/LP Conversion Kit - Order part number
WB49X10132
LP/Natural Conversion Kit - Order part number
WB49X10133
High Altitude Conversion Kit – Order part number
WB49X10130
ORIFICE/JET SIZES
ORIFICE (mm) RATE (BTU/HR)
BURNER GAS MAIN SIMMER Valve HI LO SIM
D BURNER NG 1.85 0.57 mm 0.57 17k 2700 1300 185 P
D BURNER LP 1.18 0.34 mm 0.34 15k 2500 1200 118 E
GRILL/GRIDDLE NG 1.93 ––––– 0.94 18k 6000 –––– 48 –––
GRILL/GRIDDLE LP 1.32 ––––– 0.47 18k 6000 –––– 55 –––
MAIN ORIFICE CODE
SIMMER ORIFICE CODE
ORIFICE/JET SIZES
Sea Level 3000 ft. 6000 ft.
BURNER GAS MAIN Orifice (mm)
D BURNER NG 1.85 1.78 1.61
D BURNER LP 1.18 1.09 1.07
GRILL/GRIDDLE NG 1.93 1.85 1.70
GRILL/GRIDDLE LP 1.32 1.32 1.18
HIGH ALTITUDE CONVERSION
Recommended Orifice Size for High Altitude Installation
Simmer Orifice Burner Replacement
The simmer burner orifice requires a 4mm socket
to remove it. If necessary a 4mm socket is
available under part # WX05x10006.
Burner Valve
The burner valves are attached to the manifold by
two screws and contains an orifice which sets
the flow rate for the simmer flame. This valve
does not have a low flame adjustment, it is
controlled by the orifice size.
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