Outdoor Temperature Compensated Cooling Setpoint

For an outdoor compensated cooling setpoint SYS-02=0, a cooling flow sensor is mandatory.


Attention!

If there is only one type of cooling energy consumer, a variable cooling control with flow sensor would be a waste of energy. In this case, the cooling setpoint of the chiller must be tuned to fit the cooling plant ´s demand.

The effective cooling setpoint depends on the filtered outside air temperature and is shown in the next picture.


Fig. 3.   Cooling setpoint with outside air temperature reset

Table 4.   Pre-Control Heating Parameter List

Description

Value Range

Default Value

Unit

SYS-02: cooling control

0 = OTC setpoint control

1 = OTC setpoint with humidity shift

2 = dewpoint in RefRoom with parallel shift

0 ... 2

0

-

CSP-01: low outside air temp limit

-50 ... 50

20

°C

CSP-02: low cooling setpoint

2 ... 25

18

°C

CSP-03: high outside air temp limit

-50 ... 50

35

°C

CSP-04: high cooling setpoint

2 ... 25

12

°C