The grey
side of the
ECL Card
Extended service
32r
Service parameter(s) 140
140 Function of temperature sensor S5
Circuit Setting range Factory setting
II ON / OFF OFF
For heating system types 2, 2a, 3 and 6a, sensor S5 can be
used optionally as lower DHW tank temperature sensor (cut-
out temperature) or as return temperature sensor in circuit II
(limitation of the return temperature).
ON: Return temperature sensor in circuit II. The
return temperature of the DHW circuit is
limited to the temperature set in line 30.
The return temperature limitation of the heating circuit (circuit I)
is carried out by sensor S3 (lines 31-37).
OFF: Lower DHW tank temperature sensor. DHW
charging is cut-in by S6 and cut-out by S5.
The return temperature limitation of the heating circuit (circuit I)
and DHW circuit (circuit II) is carried out by sensor S3 (lines 30-37).
The return temperature limitation is the highest return
temperature limitation of the two limitations in the heating circuit
and the DHW circuit.
The return temperature limitation is defined in lines 31-37
(heating circuit) and in lines 30, 35, 36 and 37 (DHW circuit).
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