Johnson Controls SABROE UniSAB III User Manual

Engineering manual - UniSAB III 1.10.8
88/346
001930 en 2021.06
Compressor control and surveillance
Example 2:
On a heat pump unit the inlet temperature must be corrected by the outside temperature.
• If the outside temperature is +30°C, the inlet temperature must be +40°C.
• If the outside temperature is -10°C, the inlet temperature must be +65°C.
In the menu Setup/Compr. Control, adjust Control on to Hotwater and Climate compensation to Yes. Se-
lect an outside sensor in the range -10 - +30°C.
Fig. 16: Climate compensation, example 2
The settings in the drawing are:
Sp1 = 65°C at To = -10°C and
Sp2 = 40°C at To = 30°C.
Note that Sp1 refer to the lowest and that Sp2 refer to the highest outside temperature.
The straight line indicates the inlet temperature variation under influence of the outside temperature.
Select the menu Control values/Process temp./Process out temp./Control and go down to Set point 1
and Set point .
Give Set point 1 the value Sp1 = 65°C from Fig. 14.
Give Set point 2 the value Sp2 = 40°C from Fig. 16.
At the same time, set Neutral zone = 3°C and Prop. band = 10°C as starting points. The system is now
adjusted to the desired function.
-20 10-10 20 30 40
20
30
40
50
60
70
10
80
Sp 1
T out
T inlet
Sp 2

Johnson Controls SABROE UniSAB III Specifications

General

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