.
Burner operates thus supervised by control unit and controlled by capacity controller
according to set controller parameters and functions (see documentation of
controller)
.
Burner shuts down when the load is small and the process value exceeds the burner
switch-off level set on the controller or controlled by the boiler thermostat/
pressurestat. In manual operation the burner shuts down controlled by the boiler
thermostat/ pressurestat only.
.
If the oil temperature rises above the set limit on the preheater limit thermostat- the
burner shuts down. (thermostat lockup)
.
stop and restart if the flame signal is lost during operation (wire link B has been cut
away from the from the plug section of the control unit)
.
Stop and restart if the return oil pressure rises too high
Wire link B has been cut away at the factory.
2.4.13
2.4.13
Sequence point 12. Controlled shuttdown (control loop opens)
Sequence point 12. Controlled shuttdown (control loop opens)
.
Sequence switch starts and begins to program the permissible post-purge time (15 s)
.
Oil pump motor stops
.
Main oil valve closes
.
Solenoid valve NC closes and NO opens in the control circuit
.
Nozzle valve closes when the oil pressure in the control circuit disappears
.
Flame extinguishes
.
With control signal from terminals 10 and 11 of the control unit servomotor runs to
switching point II (air dampers to position
”
closed
”
and oil regulator to position
”
open
”
).
2.4.14
2.4.14
Sequence point 13. Lockout indicator of the control unit is at symbol
◄
Sequence point 13. Lockout indicator of the control unit is at symbol
◄
.
Permissible after-burn time (15 s) ends
.
Flame simulation tests initiate in control unit.
.
Sequence switch stops
.
Fan motor stops
Re-start possible, if the prerequisites for start-up are fulfilled (see Sequence point 1.)
18 (77)
RPMARINES 30820641GB
2. Burner operation
