COZY W251F Installation And Operating Instructions Manual page 12

PILOT ADJUSTMENT
Locate the pilot adjustment screw on the valve. The pilot
flame should surround at least the top 3/8" of the powerpile
(pilot generator) or thermocouple (see below). The pilot is
unregulated so it will be operating at inlet line pressure (Max.
7" w.c. for natural gas and 11" w.c. for propane). To decrease
the pilot flame, turn the screw clockwise (approximately seven
to nine full turns to bottom of pilot light channel) until you
produce sufficient flame at the minimum noise level.
PILOT FLAME ADJUSTMENT
PILOT FLAME SHOULD ENVELOP 3/8 TO 1/2 INCH
OF THE TIP OF THE GENERATOR.
BURNER FLAME ADJUSTMENT - STAINLESS STEEL BURNER
1
1. FLAME TOO SOFT - Yellow
Flame. Open air shutters until
yellow tipping disappears.
NOTE: It is advised that the burner flames be checked at least twice during the heating season for any changes in burner
characteristics. Vacuum burner compartment at start of heating season or as often as needed.
3/8 TO 1/2 INCH
2
Air
Shutter
2. FLAME TOO HARD - Deep Blue
Coloration. Closing air shutters
to a point where yellow tipping
begins, re-open slightly to
eliminate yellow tipping. Air
shutter adjustment is now correct.
Page 12
MAINTENANCE INSTRUCTIONS
1. Installation and repair should be done by a qualified
service person. The appliance should be inspected before
use and at least annually by a professional service person.
More frequent cleaning may be required due to excessive
lint from carpeting, bedding material, etc. It is
imperative that control compartments, burners, pilot
burners, circulating air passageways and venting systems
of the appliance be kept clean.
2. If the appliance has been equipped with the optional
WFF81-C fan kit assembly, the bearings of the motor
should be oiled every six months with approximately 2
drops of S.A.E. 20 oil.
3. The appliance area must be kept clear and free of any
combustible materials, gasoline and other flammable
vapors and liquids.
4. It is essential that the flow of combustion and ventilation
air not be obstructed.
5. Periodic examination of the entire ventilation system as
a routine part of the safety performance check is
recommended on an annual basis.
3. NORMAL FLAMES
3