Proper Burner Flame - COZY WOW253 Installation And Operating Instructions Manual

Appliance input ratings are based on sea level operation and need not be changed for operation up to 2,000 (609.9m)
elevation. For operation at elevations above 2,000 ft. (609.9m), manufactured to specified deration conditions for
Canada and the United States, use the following orifice chart for/to determine the correct orifice DMS for a specific
elevation.
BURNER
BOX
FIGURE 13 - - WOW253 / WOW254
FIGURE 14
There is no primary air adjustment on the burner and with correct installation, a proper flame is assured; since the
correct manifold pressure and orificing has been done at the factory for elevations up to 2,000 ft.
HIGH ALTITUDE BURNER
ORIFICING
Appliance input ratings are based on sea level operation
and need not be changed for operation up to 2,000 ft.
(609.9m) elevation. For operation at elevations bove 2,000
ft. (609.9m), manufactured to specified deration condi-
tions for Canada and the United States. Use the follow-
ing orifice chart for/to determine the correct orifice DMS
for a specific elevation. Orifice change must be com-
pleted by a qualified installer or service technician.
SPECIFIC ELEVATIONS
MODEL 0 to
NO. 2,000'
NATURAL GAS
WOW253 1.3
WOW403 5 4
WOW254 6 7
WOW404 6 6
After conversion is complete, attach P/N 91137 Label
adjacent to the rating plate.

PROPER BURNER FLAME

SIGHT GLASS
MANIFOLD
2,000' 4,000' 6,000'
4,000' 6,000' 8,000'
1.3 1.3 1.3
5 4 5 4 1.3
L.P. GAS
6 7 6 7 6 7
6 8 6 8 6 9
SIGHT
GLASS
FIGURE 13 - - WOW403 / WOW404
LIGHT BLUE OUTER MANTLE
DARKER BLUE INNER MANTLE
BLOCKED VENT SHUT-OFF
This heater is equipped with a blocked vent shut-
off system that will automatically turn the heater
off in the advent of the vent exhaust or air intake
pipe becoming blocked. This blockage may be
caused by snow accumulation, insects, small ani-
mals, animal nest, etc.
Once this occurs the heater will remain in a lock-
out cycle for one hour. After one hour there will
be an ignition attempt. If the blockage has been
8,000' -
10,000'
removed, the heater will return to normal opera-
tion. If the blockage remains, the heater will re-
1.3
turn to a one hour lock out cycle.
1.3
If this problem occurs, homeowners must not at-
tempt to operate or repair the heater themselves
6 7
but contact a qualfied service agency.
6 9
Page 13
BURNER
BOX
GAS
VALVE
SYSTEM