Siemens RVA63.242 - Modulating Burner; Running Time of Damper Actuator

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Siemens Building Technologies Basic Documentation RVA63.242, RVA53.242 CE1P2373E
Landis & Staefa Division Description of OEM settings 26.03.2001
Modulating burner
5.11 Running time of damper actuator
Setting the damper actuator running time for the modulating burner.
To ensure optimum functioning of burner control, the damper actuator running time
must be set.
Setting range Unit Factory setting
7.5...480
s 60
It must be observed that the running time to be set only refers to the modulating range.
Running time of damper actuator (90°) = 120 seconds
Minimum position of damper actuator = 20°
Maximum position of damper actuator = 80°
Hence, the damper actuator running time effective for the control is as follows:
s
s
80
90
)2080(*120
=
°
°
−
°
For control operation, running time-dependent minimum positioning pulses are active
that are defined as follows:
Actuator running time TS Minimum pulse length
7.5 s - 14.5 s ~ 200 ms
15 s - 29.5 s ~ 300 ms
30 s – 59.5 s ~ 500 ms
60 s – 119.5 s ~ 1.10 s
>120 s ~ 2.20 s
Benefit
Description
Setting
Note
Example
Positioning pulses