COZY BBT54 Installation And Operation Instructions Manual page 15

inducer S_ ffcb Closes
[ [(Ventor Motor) (Fal_ Pro'_ed)
NO
[ ockout
a{ker 3
attempts
SEQUENCE OF OPERATION
Spark Ignition
[ nergized
15 Sec. 20 Sec
_al_e opens gls [hermostat
flo\_ to buulel satisfied
NO
_J
0_
STEP #
1)
2)
3)
4)
5)
6)
7)
S)
9)
Thermostat calls for heat.
Inducer turns on.
Pressure switch closes.
Power to ignitor.
Gas flow to burner.
Burner ignition proven.
NOTE: If there is a malfunction in any of the above steps, the sequence will stop at that point
and return to Step 2. If after 3 attempts malfunction still occurs, control will go into lockout
mode for one hour. This one hour lockout can be bypassed by resetting the thermostat, or
interrupting power.
Thermostat satisfied.
Gas valve closes.
lnducer turns off.
HEATER IS NOW IN STANDBY MODE.