EVCO c-pro nano CHIL - Manual (Page 102)

C-PRO NANO CHIL AND C-PRO MICRO CHIL – APPLICATION MANUAL
Pag. 102
- Mode = Operating mode (1 = Winter)
- SPH1 = LB winter set point
- PC11 = Regulation type (0 = Lateral band)
- PC12 = Regulation band
- PC23 = Heat pump set point lower limit
- PC24 = Heat pump set point upper limit
6.5.2 Neutral-zone (NZ) regulation
This regulation requires the definition of a neutral zone (NZ) around the set point, within which no
decision will be taken as to the activation or de-activation of compressors in use at the time.
If the outlet temperature is found to be outside the neutral zone, the compressors are activated/de-
activated, in order to bring the temperature value back within the neutral zone.
The requests for switching ON/OFF for the various power steps provided by compressors in
summer operating mode (chiller) will follow this logic:
⋅
Switching ON: when the outlet temperature exceeds the neutral zone.
⋅
Switching OFF: when the outlet temperature falls below the neutral zone.
- Mode = Operating mode (0 = Summer)
- SPC1 = NZ summer set point
- PC11 = Regulation type (1 = Neutral zone)
- PC14 = Neutral zone
- PC17 = Extra time for out-of-zone request
- PC21 = Chiller set point lower limit
- PC22 = Chiller set point upper limit
The requests for switching ON/OFF for the various power steps provided by compressors in winter
operating mode (heat pump) will follow this logic:
⋅
Switching ON: when the outlet temperature falls below the neutral zone.
⋅
Switching OFF: when the outlet temperature exceeds the neutral zone.
SP
Neutral zone
Compressor
start-up
Compressor
shutdown
Outlet T
Steps
Inlet T
SP SP - PB