26
09/2005 - Art. Nr. 13 019 526A
Start-up
Operating mode
Burner check
Air:
Gas:
Start-up
Air:
Gas:
Air pressure check
Pre-ventilation: 20 s
Pre-ignition
Safety time
Stabilisation time
Operation
Burner ready for operation
Boiler thermostat requests heat.
Burner start flowchart:
The burner starts with the following function sequence:
–
Air flap opens for ventilation. Air: . . . . . . . . . . . . . . . . . . . . . . . . .
–
Blower motor on. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–
Pre-ventilation 20 seconds: time remaining is displayed.
–
Gas throttle moves to ignition position. Gas: . . . . . . . . . . . . . . . . .
–
Air flap moves to ignition position. Air: . . . . . . . . . . . . . . . . . . . . .
–
Ignition on. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–
Valve energised. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–
Safety time 3 seconds
–
Flame formation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
After the safety time, the ignition transformer is de-energised.
·
During the stabilisation time, the burner remains in ignition setting.
·
The burner is in operation and adjusts
bu
(lower operating point) to
bo
(upper operating point) within the specified performance range
(manual/Auto operating type selector switch to Auto). The current setting
of the air flap is displayed.
Standby
Air:
Gas:
Air:
Gas:
Air:
Gas:
Air:
Gas:
Air:
Gas:
Air:
Gas: