For Your Safety - Williams 3501522A Owner's Manual

FIGURE 18 - BURNER FLAME CHARACTERISTICS
BURNER FLAME CHARACTERISTICS
Start the heater and let it operate for at least 10 minutes.
Open the access door to view the burner flame. Limit your
movements near the heater a few more minutes before
making your final observation. The flame may look yellow
due to dust particles in the room air. The flame should
change to a nice blue color with firm inner and secondary
cones. An occasional flash of orange might be seen as
dust particles burn in the flame. This is normal. No burner
adjustment is provided, or is necessary. (Figure 18).
NORMAL APPEARANCE
NATURAL GAS:
1. Inner cone- blue color - 3/8 to 5/8-inch above ports.
2. Secondary inner cone - light blue - 1 to 2-inches
above ports.
3. Total flame - from blue to nearly invisible -
approximately 6-inches above ports.
PROPANE GAS:
1. Inner cone - blue color - 1/2 to 3/4-inch above ports.
2. Secondary inner cone - light blue - 1 to 2-inches
above ports.
3. Total flame - from blue to nearly invisible -
approximately 6-inches above ports.
ABNORMAL APPEARANCE
LAZY FLAME:
Long soft yellow cones moving around in the combustion
chamber lifting from ports (insufficient air).
EXTREMELY FAST FLAME:
Will not hold to ports - entire cone sections blow off from
noisy ports (too much pressure).
WARNING: If the flame appears abnormal,
contact the gas company or a qualified service
technician immediately.
WARNING: Natural gas heating value (BTU per
cubic foot) can vary significantly; therefore, it is the
installer's responsibility to see that the BTU input to
the heater is adjusted properly. Failure to do so could
cause combustion chamber failure, asphyxiation, fire or
explosion, resulting in property damage, bodily injury or
death. Refer to the National Fuel Code (NFPA-54) to be
sure the heater is burning fuel at the proper rate.
WARNING: Read owner's manual before using /
installing. Be sure CHANGED LIGHTING INSTRUCTION
TAG hangs at the lowest position in the furnaces
under / below the heat shield.
GAS CONVERSION KITS
NATURAL TO PROPANE GAS
MODEL
8945
8946
8947
8948
PROPANE TO NATURAL GAS
MODEL
8949
8950
8951
8952

For Your SAFETY,

read before lighting
WARNING: If you do not follow these instructions
exactly, a fire or explosion may result causing property
damage, personal injury or loss of life.
A. This appliance has a pilot which must be lighted by
hand. When lighting the pilot, follow these
Instructions exactly.
B. BEFORE LIGHTING smell around the appliance area
for gas. Be sure to smell next to the floor because
some gas is heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance or strike a match.
• Do not touch any electric switch; do not use any
phone or cell phone in your building.
• Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call the fire
department.
DESCRIPTION
200 SERIES
350 SERIES
500 SERIES
650 SERIES
DESCRIPTION
200 SERIES
350 SERIES
500 SERIES
650 SERIES
VENTED ROOM HEATERS
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