Johnson Controls SABROE Unisab III Control User Manual

The Actual set point shows the regulating value of the inlet temperature at that particular mo-
ment.
If the outside temperature is 30°C, this value must be 40°C. If the outside temperature is
-10°C, the value must be 65°C. The outside temperature can be seen in % of the measuring
range in the picture Control values/Capacity/Values.
Examples 1) and 2) precondition that the flow temperature is measured with the normal Proc-
ess Out PT100 input, but if a temperature transducer of 4-20 mA is installed in a common
reservoir using User input 1, the outdoor compensation will also be able to work here.
See subsection 3.1.10. User input regulator (Ext. input) where the procedure is exactly the
same as the one described in the above examples as this regulator can also be used for both
Cooling and Heating functions.
In both examples the outlet temperature will rise when outside temperatures fall. If the oppo-
site effect is required, i.e. rising outlet temperature at rising outside temperature, Sp1 and
Sp2 must be switched.
Compressor control and surveillance
Engineering manual - Unisab III 1.10
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Johnson Controls SABROE Unisab III Control Specifications

General

Brand	Johnson Controls
Model	SABROE Unisab III Control
Category	Control Systems
Language	English