AK-HP 780
Heat pump controller RS8GF202 © Danfoss 2015-08
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Reference
The reference for the regulation is
Set point + night displa Ext. Ref
Set point
A basic value for the required temperature is set.
Night displacement
With this function the reference can be displaced by up to 25 K in
positive or negative direction.
Displacement can be activated in three ways:
• Signal on an input
• From a master gateway’s override function
• Internal time schedule
Override with a 0 - 10 V signal
When a voltage signal is connected to the controller the reference
can be displaced. In the setup it is defined how big a displacement
is to take place at max. signal (10 V) and at min. signal.
Limitation of reference
To safeguard yourself against a too high or too low regulation
reference, a limitation of the reference must be set.
Forced operation of the compressor capacity in the suction
group
A forced operation of the capacity can be carried out which
disregards the normal regulation.
Depending on the selected form of forced operation, the safety
functions will be cancelled.
Forced operation via overload of requested capacity
The control is set to manual and the desired capacity is set in % of
the possible compressor capacity.
Forced operation via overload of digital outlets
The individual outputs can be set to MAN ON or MAN OFF in the
software. The control function disregards this but an alarm is sent
out that the outlet is being overridden.
Forced operation via change-over switches
If the forced operation is done with the switch-over on the front of
an expansion model, this is not registered by the control func-
tion and no alarm is sounded. The controller continues to run and
couples with the other relays.
Ref
Max.
Min.
