Siemens RVA53.242 - 5.4 Minimum limitation of the burner running time

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Siemens Building Technologies Basic Documentation RVA63.242, RVA53.242 CE1P2373E
Landis & Staefa Division Description of OEM settings 26.03.2001
5.4 Minimum limitation of the burner running time
Reduction of burner switching frequency.
Also termed "Burner cycling protection“.
Setting range Unit Factory setting
0...10 min 4
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
0
1
0
50
40
30
1
TK
t
4 12 16 200
60
°C
TK
tBRmin
min
TKw
+SDK/2
x
2371D04
TKw
TKw-SDK/2
8
TKw+SDK
FZ
BR
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
Benefit
Note
Setting
Effect
Minimum burner running
time
Restriction