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FLAME
CAI Line
Line voltage
LED
FIGURE 16
IGNITION CONTROL A3
A3 IGNITION
CONTROL
S18 COMBUSTION
AIR PROVING SWITCH
FIGURE 17
will immediately restart the ignition sequence and then lock
out if ignition is not gained after the third trial. See System
control will restart the ignition sequence and continue until
Operation
closed limit switch and open combustion air prove switch.
ignition control then allows 30 seconds for the combustion
the combustion air prove switch closes proving that the
combustion air inducer is operating before allowing the
ignition control to energize.
40-second indoor blower delay period begins. Sparking
the 8-second trial for ignition.
delay.
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