Lennox EL296UHE Series Unit Information page 65

CONTINUOUS LOW SPEED FAN SEQUENCE OF OPERATION
MANUAL FAN SELECTION MADE AT THERMOSTAT.
AFTER 2 SECOND DELAY, INDOOR BLOWER IS
ENERGIZED ON CONTINUOUS FAN SPEED.
Y E S Y E S
THERMOSTAT CALLS FOR FIRST STAGE COOL. THERMOSTAT CALLS FOR FIRST-STAGE HEAT.
YES
YES
INDOOR BLOWER RAMPS TO FIRST STAGE AFTER 45-SECOND DELAY, INDOOR BLOWER
COOLING SPEED AFTER A 2-SECOND DELAY. SWITCHES TO LOW HEAT SPEED.
FIRST-STAGE COOL DEMAND SATISFIED? FIRST-STAGE HEAT DEMAND SATISFIED.
YES
YES
NO
NO
SECOND STAGE COOL DEMAND THERMOSTAT CALLS FOR SECOND-STAGE HEAT.
YES
INDOOR BLOWER RAMPS TO SECOND INDOOR BLOWER SWITCHES TO HIGH HEAT SPEED
STAGE COOL SPEED AFTER 30-SECOND RECOGNITION PERIOD.
YES
SECOND STAGE COOL DEMAND SATISFIED? SECOND-STAGE HEAT DEMAND SATISFIED.
YES
YES
INDOOR BLOWER RAMPS DOWN TO FIRST STAGE INDOOR BLOWER RAMPS DOWN TO LOW
COOL SPEED. HEAT SPEED.
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