Low Fire State - ProFire PF3100 Product Manual

13.10 LOW FIRE STATE

The Low Fire state is a main fuel state that holds the system at its lowest stable firing rate. The safety output
behavior is dependent on system behavior and is summarized below.
Process Control
13.10.1 SAFETY OUTPUT BEHAVIOR – LOW FIRE STATE
Card
PF3101-00 BMS Controller card
PF3102-00 Ion Pilot card
PF3102-01 UV Pilot card
1 De-energized when Pilot Off Mode is set to Off After Main On
2 De-energized when Incinerator Enable is set to Enabled
3 Energized under reignition conditions in accordance with configured Pilot Relight Mode and Pilot Relight Timeout settings
(Controller Settings > Outputs > Ignition).
13.10.2 TRANSITIONS TO THE LOW FIRE STATE
From Scenario
Process temperature is below its
configured Low Fire setpoint
Pilot
Process temperature is below its
configured Waste Gas On setpoint
Process Control Process temperature is above its
– High Fire configured Process setpoint
Process temperature is below its
Process Control
– Incinerate configured Waste Gas On setpoint
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Pilot
Low Fire
Condition
Low Fire Mode setting is not set to Disabled, AND
No main permissive conditions present, AND
Incinerator Enable setting is set to Disabled
No main permissive conditions present, AND
Incinerator Enable setting is set to Enabled
Any
Any
Lockout
Waiting
Pilot
Process Control
Output
Pilot
SSV1
SSV2
Valve
Coil
Ignition Enable
PF3100 Product Manual
DOC-001149 v8.0
Output State
Energized
1
Energized
Energized 2
Energized 1
De-energized 3
Open
3
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