Pump blocking if T.coll. max. is reached at the collector sensor
Start differential for T.coll. max.
Stop differential for T.coll. max.
Display of the minimum temperature at the collector sensor
Start differential for T.coll. min.
Stop differential for T.coll. min.
Start differential, collector - reference
Stop differential, collector - reference
Optional: Stop threshold at the limit sensor T.lim.
Start differential for T.lim. max.
Stop differential for T.lim. max.
➢ When the collector exceeds a certain temperature (e.g. 130 °C) the system comes to a halt
and it is assumed that steam is present in the collector, usually making circulation of the
heat transfer medium impossible. For this reason, T.coll. has an adjustable maximum limit
(T.coll. max).
➢ The pump is switched off if either the T.ref. sensor captures a temperature in excess of the
T.ref. max. threshold + Diff. off or if the T.lim. sensor (if installed) captures a temperature in
excess of the T.lim. max. threshold + Diff. off.
➢ If the limit sensor T.lim. is used, the maximum threshold T.ref. max. of the reference sensor
should be set so high that it has no effect on operation.
➢ During the stabilisation time, the solar circuit pump will run from the start irrespective of
the temperature differential between the collector sensor and cylinder sensor and the
minimum threshold T.coll. min. at the collector. The thresholds T.ref. max. and T.lim. max.
remain active. If the solar thermal system does not meet the start conditions at the end of
the stabilisation time, the pump will be shut down.
➢ If the Drainback function is activated, the stabilisation time will be restarted at the end of
the filling process.
To Next Page
Loading...
Need help?
General
