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The heating curve used by the controller can be increased
or decreased to suit the building heating load as shown in
the family of curves below. Increasing this value has the ef-
fect of raising the flow set temperature, reducing the value
will lower the flow set temperature.
Heating curve:
Arrangement/Heat. circuit/hc/heat. curve
adjustment range: 0.3 ... 3.0
factory setting: 1.0
Adjustment channel for summer operation. If the outdoor
temperature exceeds the adjusted value, the heating circuit
will be switched off. The hysteresis is 2 °Ra.
Summer:
Arrangement/Heat. circuit/hc/summer
adjustment range: 32 ...100 °F
factory setting: 70 °F
The mixer function controls the mixing valve position accor-
ding to the difference between the actual flow temperature
and the set flow temperature. The valve is opened or closed
in pulses depending on this deviation. The parameter “mixer”
allows the pulse operating time to be matched to suit the
valve operating time.
Mixer:
Arrangement/Heat. circuit/hc/mixer
adjustment range: 1 ... 20 s
factory setting: 4 s
heating curves
flo
w temperatur
e in °F
outdoor temperature in °F