Bentone B40 - Page 36

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Bentone B 30/B 40 J/K
- «OPEN» at the beginning of prepurging
- «MIN» on completion of prepurging
If the actuator does not drive the air damper to the required position, the
burner startup sequence will be stopped
- 2 control outputs for the release of the second and third output stage or
for load control
- When load control is enabled, the control outputs for the actuator will be
galvanically separated from the burner control’s control section
- Connection facilities for
– remote lockout warning device
– remote reset
– remote emergency shutdown
- In addition, with LAL2... / LAL3...:
– possibility of air pressure supervision with functional test of the air
pressure monitor on startup
– possibility of semiautomatic burner startup
Flame supervision
- Flame detector and flame simulation test are made automatically during
burner off times and the prepurge time «t1»
- If loss of flame occurs during operation, the burner control will initiate
lockout
- If automatic repetition of the startup sequence is required, the clearly
marked wire link on the plug-in section of the LAL... must be cut away 
start repetition
Preconditions for burner startup
- Burner control is not in the lockout position
- Sequence switch is in its start position
 with LAL1..., voltage is present at terminals 4 and 11
 with LAL2... / LAL3..., voltage is present at terminals 11 and 12
- Air damper is closed
- End switch «z» for the «CLOSED» position must feed power from terminal
11 to terminal 8
- Contact of the limit thermostat or pressure switch «W» and the contacts
of any other switching devices in the control loop between terminals
4 and 5 must be closed  e.g. a control contact for the oil preheaters
temperature
With the exception of LAL1... Normally closed contact of the air pressure
switch must be closed  «LP» test