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COZY 90NXXA Manual De Instrucciones página 16

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ADJUSTING THE BURNER
WARNING: DO NOT ATTEMPT TO CHANGE
PRESSURE SETTINGS WITHOUT PROPER TRAINING
AND INSTRUMENTS. TO DO SO MAY CAUSE YOUR
FLOOR FURNACE TO MALFUNCTION RESULTING IN
PROPERTY DAMAGE, BODILY INJURY,
OR DEATH.
THE FOLLOWING INFORMATION IS PROVIDED FOR USE
BY A TRAINED SERVICE TECHNICIAN WITH MEASURING
INSTRUMENTS:
MINIMUM INLET PRESSURE
Natural Gas . . . . . . . . . . . . . . . . . . . . . . 4.5 Inches Water Column
Propane Gas . . . . . . . . . . . . . . . . . . . . . 11.0 Inches Water Column
MAXIMUM INLET PRESSURE
Natural Gas . . . . . . . . . . . . . . . . . . . . . . 7.0 Inches Water Column
Propane Gas . . . . . . . . . . . . . . . . . . . . 14.0 Inches Water Column
(If the inlet pressure is found to exceed 14.0 inches water column, check
the performance of the control valve thoroughly as damage may have
occurred. If manifold pressure cannot be adjusted, replace the control valve).
MANIFOLD PRESSURE
Natural Gas . . . . . . . . . . . . . . . . . . . . . . 3.5 Inches Water Column
Propane Gas . . . . . . . . . . . . . . . . . . . . 10.0 Inches Water Column
OPTIONAL OPERATION
Your floor furnace has been designed to meet all safety
requirements of the American National Standards
Institute and government regulations by offering two
modes of operation.
OPTION 1
Place the furnace key on the damper control rod Figure
17-A & tum counterclockwise
is concealed and the damper is open. Your floor furnace
will now cycle on and off maintaining a moderate grill
temperature and an even room temperature. Your floor
furnace will function best on this setting during mild
weather.
FIGURE 17-A
IN MILD WEATHER, OPERATE FURNACE
WITH DAMPER OPEN.
Furnace will cycle on and off maintaining a moderate
grill temperature and an even room temperature.
16
GAS FIRED VENTED
FLOOR FURNACES
until the warning flag
OPTION 2
Tum the furnace key clockwise
reading "WARNING - GRILL IS HOT - Keep off - can cause
burns" is visible and the damper is closed Figure 17-B. The
limit control will now cease to function and the floor furnace
will now put out the maximum amount of heat until the
room temperature reaches the thermostat setting. Use this
option only in extremely cold weather. If furnace continues
to cycle on limits, assure that damper door is 100% closed
by adjusting damper door pin if necessary.
FIGURE 17-B
IN EXTREMELY COLD WEATHER, CLOSE DAMPER
(Which Exposes the Warning Plate).
Furnace will then put out maximum amount
of heat until room temperature reaches setting
on wall thermostat.
LIMIT SWITCH TEMPERATURE SETTINGS
90N30A / 90P30A
140°
90N50A / 90P50A
160°
90N65A / 90P65A
180°
WARNING: Floor furnace grills become hot
when furnace is in operation. Contact of bare skin
with grill may result in severe burns. Keep children
off, provide fence or register guard for their
protection.
until the warning flag

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