Lennox International Inc. G50UH-48B-090 Furnace User Manual


 
I
SURELIGHT ® CONTROL
CONTINUOUS FAN SEQUENCE OF OPERATION
I
!
LED: SLOW FLASH RATE REMAINS I
I
UNCHANGED THROUGHOUT SEQUENCE.
MANUAL FAN SELECTION MADE AT THERMOSTAT.
CONTROL (G) ENERGIZES INDOOR BLOWER AT
FAN SPEED. EAC TERM. IS ENERGIZED.
/
THERMOSTAT CALLS FOR HEAT (W). I--l't
/
NO
THERMOSTAT CALLS FOR COOLING.
_YES
INDOOR BLOWER SWITCHES TO COOL SPEED.
THERMOSTAT OPENS.
1
t
YEs I
AFTER NORMAL DELAY.
I THERMOSTAT OPENS. COMBUSTION AIR INDUCER I
AND HUM TERMINAL ARE DE-ENERGIZED.
J INDOOR BLOWER SELECTED TIME OFF DELAY BEGINS. I
I
I
AFTER DELAY HEAT SPEED DE-ENERGIZED.
(bower rema ns energ zed dur ng cont nuous fan mode).
INDOOR BLOWER SWITCHES TO FAN "4
J
SPEED, EAC TERM, REMAINS ENERGIZED,
HUM TERM. ENERGIZES
WITH COMB. AIR INDUCER.
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