TA FRISTAR3, Руководство по эксплуатации

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15
Schematic diagram for activating the DHW circulation pump with a different
switching device
If the DHW circulation pump is switched via a different controller, the DHW circulation return must
be connected to the cold water supply line.
However, it must be ensured that the flow rate in the DHW circulation line is greater than the mini
-
mum flow rate of the flow sensor in the FRISTAR3 (2 l/min or 120 l/h).
UVR67
If the DHW circulation pump is also to be switched on and off according to temperature, the maxi -
mum possible number of FRISTAR3 modules is three. This is done using the program 480 for switch -
ing modules 2 and 3 on and off via outputs A1 and A2 . The DHW circulation pump can be switched
at output A3 via the differential S5 – S4 ( S5 is unused, S4 measures the DHW circulation temperature
and switches off when the max3 value is reached).
Freely programmable controllers
The circulation pump can be controlled with the " circulation " function.