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menu “settIng the heatIng”
Menu: Parallel operation / Setting heating…
The menu provides the following information…
Switch. Cycle
means heating control time. This time denes at what inter-
val the heating is supposed to switch to the next higher /
lower bivalent level (compressor switch-on/shut-off).
This value should not be set to less than 10 minutes for 2
heat pumps.
If you set 20 min., it would take 20 minutes until the second
compressor stage would be energised following the rst
compressor stage if a corresponding request is received.
The request is determined by the setpoint and actual return
temperature of the master heat pump. To see how much of
the heating control time has expired, refer to Information-
Timings.
Parall. Hysteresis
In addition to the heating regulator hysteresis (under:
Service / Settings /Temperatures), there is also a paral-
lel hysteresis for parallel connections. This hysteresis must
always be greater than the heating regulator hysteresis of
the master heat pump. The purpose of this second hyster-
esis setting is to cut in half the heating control time that will
expire before the next switch-on/switch-off if this hystere-
sis is exceeded. This allows for a quicker control response if
the difference between setpoint and actual temperature is
too great.
switch time cooling
means cooling controller time. This time denes at what in-
terval the heating is supposed to switch to the next higher /
lower bivalent level (compressor switch-on/shut-off).
This value should not be set to less than 10 minutes for 2
heat pumps.
If you set 20 min., it would take 20 minutes until the second
compressor stage would be energised following the rst
compressor stage if a corresponding request is received. The
request is determined by the temperatures of the master
heat pump.
Use the back arrow to exit this menu item.
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