COZY 90N30A Instrucciones De Instalación Y Funcionamiento página 15

If difficulty in adjusting the burner is experienced, it may be the result of incorrect gas supply pressure or manifold pressure.
Pressure can only be checked and adjusted by a trained service technician using instruments designed for that purpose.
! 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:
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 (See Figure 17-A) & tum counterclockwise
the warning flag 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.
FIG. 17-A
FURNACE WITH DAMPER OPEN.
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.
1017826-A
ADJUSTING THE BURNER - Continued
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
until
IN MILD WEATHER, OPERATE
Furnace will
cycle on and off
maintaining a
moderate grill
temperature and
an even room
temperature.
OPTION 2 - Tum the furnace key clockwise
flag reading "WARNING - GRILL IS HOT - Keep off - can cause burns"
is visible and the damper is closed (See 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.
FIG. 17-B
IN EXTREMELY COLD WEATHER, CLOSE
DAMPER (Which Exposes the Warning Plate).
LIMIT SWITCH TEMPERATURE SETTINGS
90N30A / 90P30A . . . . . . . . . . . . . . . . . . . . . . . . 140°
90N50A / 90P50A . . . . . . . . . . . . . . . . . . . . . . . . 160°
90N65A / 90P65A . . . . . . . . . . . . . . . . . . . . . . . . 180°
Page 14
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until the warning
Furnace will then put
out maximum amount
of heat until room
temperature reaches
setting on wall
thermostat.