Grant Spira Series - Burner Operational Sequence

Burner
41
For ‘STEP AUTO’ function (the two digit code allocated to each function). Refer to Section 9.7.3.
Wait Post Purge
9.3 Burner Operational Sequence
Flow Chart of Operation of Wood Pellet Boiler
Wait Boiler Thermostat
Wait Pre Load Brazier
Pressure Switch Check OK
T > 'T08' Pre Load Time
Switched Live
Input Off
Switched Live
Input Off
Burner Power
Activated
03
40
40
41
45
Temp > 'Delta Restart' Temp or
Switched Live Input Off
Temp < 'Delta Restart' Temp
& Switched Live Input On
Wait Lighting
(Ignition)
Lux = 'Flame on'
Wait Lighting
(Flame Stabilisation)
T > 'T13' Flame Stabilisation
42
Wait Lighting
(Lighting Feed Reduced)
T > 'T09' Lighting Feed Reduced
13
Pellet Burner Firing
(Max Flame)
Temp < 'Temp
Delta' Range
Flash Cleaning = 1
Auger run time >
'Time Clean Braz' &/or
'Time Clean Boiler'
Temp within 'Temp
Delta' Range
13
Pellet Burner Firing
(Modulating )
Temp in 'Temp
Delta' Range
Temp > 'Temp
Delta' Range
13
14
Pellet Burner Firing
(Min Flame )
Temp > 'Temp Off H2o'
Flash Cleaning = 0
Auger Run Time > 'Time Clean Braz'
Auger Run Time >
'Time Clean Braz'
Auger Run Time > 'Time Clean Boiler'
Auger Run Time >
'Time Clean Boiler'
Turning Off Brazier
14
Switched Live
Input Off
Switched Live
Input Off
Switched Live
Input Off
Switched Live
Input Off
Lux < 'Flame On'
26
Turning Off Brazier
Watt Cleaning Boiler
Wait Brazier is Opening >>>
Wait Brazier is Closing >>>
15
15
03
Wait Pre Load Brazier
(Pressure Switch Check)