( S1 and S2 are located on the back of
the controller insert. To move the functi -
on switch insert, remove it as described
in the installation instructions.)
Function switch S1
"Heating – Cooling"
In air-conditioning systems, the control -
ler can be used also to regulate the cooling load. The feedback of
the setting value (valve position) to the controller is provided by
means of a potentiometer in the servomotor, instead of the flow
H (Heating) = factory basic setting
In setting K the following mean:
LED display green
Function switch S2 "Target Value Definition"
2 (target value in the pro. range, like setting knob
= factory basic setting
1 (Operating point is always at the target value)
Position 1 of the switch is appropriate for example for mixing
chamber or greenhouse regulations. With this setting the entire
operating characteristic curve goes only in one direction.
Position the setting knob
always on 50.
(greater cooling load)
(less cooling load)