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Building Technologies Division User Manual LMS14… CC1U7471en
6 The settings in detail 28.01.2015
The input limits are determined from the equivalent OEM speed parameters and the
inverse linear equation used for the conversion from load to speed. The values
determined this way are entered in the respective parameters. The limits for Fan speed
heating max (2441), Fan speed full charging max (2442), Fan speed DHW max (2444)
and Controller delay speed (2452) are restricted to the range of Required speed LF
(9524) and HF outp OEM limit [4780.1]. Fan sp start value inst WH (2443) from 0 to HF
outp OEM limit [4780.1].
On the Burner control menu, the limits are defined as follows:
[4782.1]
9524
[4778.1]
9504
9512
[4777.1]
[4781.1]
[4779.1]
[4780.1]
9529
Safety-related value
Adjustable via operator terminal
0
2000
Numbers in brackets [ ] correspond to the line numbers
7471d43e/0111
Figure 114: Fan parameters settable as load values via QAA75…/AVS37…- limits
Key
Line no. Meaning
[4777.1] PrepurgOutpLimOEM
[4778.1] IgnitionOutpLimOEM
[4779.1] PartialLoad OutLimOEM
[4781.1] Maximum output OEM limit
[4780.1] High-fire output OEM limit
[4782.1] Minimum output OEM limit
9504 N_Vor_QAA Speed required for prepurging (QAA)
9512 Ignition output
9524 Low-fire output
9529 High-fire output
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