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 |