Minimum Limitation Of The Burner Running Time - Siemens RVA63.242 User Manual

Benefit
Note
Setting
Effect
Minimum burner running
time
Restriction
Siemens Building Technologies
Landis & Staefa Division

5.4 Minimum limitation of the burner running time

Reduction of burner switching frequency.
Also termed "Burner cycling protection".
Setting range
0...10
Once switched on, burner stage 1 will remain activated for at least the period of time
set here.
As soon as the burner is switched on, the minimum burner running time starts to make
certain the burner will not be switched off before the set minimum time has elapsed.
Each time the burner is switched off, the minimum burner running time will be reset if
not yet elapsed.
If the boiler temperature exceeds the setpoint by the amount of the entire switching
differential, the minimum burner running time will be ignored for safety reasons
TK
°C
60
50
40
30
0 4
1
FZ
0
1
BR
0
BR Burner
FZ Release counter
SDK Switching differential of the boiler
tBRmin Minimum burner running time
TKw Boiler temperature setpoint
TKx Actual value of boiler temperature
Basic Documentation RVA63.242, RVA53.242
Description of OEM settings
Unit
min
TK
x
8 12 16
tBRmin
Factory setting
4
TKw +SDK
TKw +SDK/2
TKw
TKw- SDK/2
20 min
t
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CE1P2373E
26.03.2001