Forced Operation Of The Pumps; Flow Temperature Limitation; Return Flow Temperature Limitation - Samson TROVIS 5500 Operating Instructions Manual

7.3

Forced operation of the pumps

When the pumps (Pu1, Pu2, Pu3 and Pu4) have not been activated for 24 hours, forced operati-
on of the pumps is started between 12:00 and 12:01 h. The storage tank charging pump SLP is
started between 12:01 and 12:02 h.
7.4

Flow temperature limitation

The flow temperature limitation is performed separately for each heat exchanger.
If the temperature at the flow sensor VF1, VF2 or VF3 exceeds the maximum flow temperature,
the corresponding heat exchanger is limited to the Max. flow temperature.
2
[Übersicht > Parameter > Wärmetauscher 1...3]
Parameters
Vorlauftemp. max
(max. flow temperature)
Vorlauftemp. min
(min. flow temperature)
Note: The controller does not replace the function of a safety temperature limiter.
7.5

Return flow temperature limitation

The return flow temperature limitation is performed separately for each heat exchanger.
If the temperature at the return flow sensor RüF1, RüF2 or RüF3 exceeds the maximum permissi-
ble temperature, the output of the corresponding heat exchanger 1, 2 or 3 is restrained while
the other heat exchangers continue to work normally. In firmware version 1.50 and higher, the
restraint is determined by the Return flow limitation factor (P algorithm).
Note:
– The current return flow temperature set points, even for restrained heat exchangers, can
be read in the set point menu [Übersicht > Sollwerte].
– Using weather-compensated control with gradient characteristic, the return flow tempera-
ture is limited to a fixed value by equating the Return flow temperature foot and Max. re-
turn flow temperature parameters.
WE Adjustment range
90 °C 20 to 120 °C
20 °C 20 to 120 °C
General functions
37
EB 5571-2 EN