Louisville Tin and Stove BBT104 - Manual (Page 15)

SEQUENCE OF OPERA
TION
STEP # 1
)
Thermostat calls for heat.
2
)
Inducer turns on.
3
)
Pressure switch closes.
4
)
Power to ignitor
.
5
)
Gas flow to burner
.
6
)
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
.
7
)
Thermostat satisfied.
8
)
Gas valve closes.
9
)
Inducer turns off.
HEA
TER IS NOW IN ST
ANDBY MODE.
Page 15 Thermostat calls for heat
Power to Draft
Inducer
(V
entor Motor)
Pressure
Switch Closes (Fan Proved)
Spark Ignition
Energized
Gas control
valve opens gas flow to burner
Ignition Proved
Heating
Cycle
Thermostat
satisfied
Gas control valve closes
Draft
inducer off
Stand-by
mode
в
в
в
в
в
в
в
в
в
в
в
в
Lockout after 3
attempts
NO
NO
20 Sec.
Post Purge
15 Sec.