EVCO EPU2LXP1CH Installer manual - Manual (Page 57)

EVCO S.p.A. c-pro 3 micro CHIL | Application manual ver. 1.0 | Codice 144CP3CHE104
page 57 of 120
PC23 = Heat pump set point lower limit
PC24 = Heat pump set point upper limit
8.6.2 Zero energy band (ZEB) control
This control type requires the definition of a zero energy band (ZEB) around the set point. Compressors will not be switched on or off
within the zero energy band.
If the CHW leaving temperature is outside the zero energy band, the compressors are activated/de-activated, in order to bring the CHW
leaving temperature value back into the zero energy band.
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 CHW leaving temperature exceeds the zero energy band.
Switching OFF: when the CHW leaving temperature falls below the zero energy band.
Mode = Operating mode (0 = Summer)
SPC1 = NZ summer set point
PC11 = Control type (1 = Zero energy band)
PC14 = Zero energy band
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 CHW leaving temperature falls below the zero energy band.
Switching OFF: when the CHW leaving temperature exceeds the zero energy band.
Mode = Operating mode (1 = Winter)
SPH1 = NZ winter set point
PC11 = Control type (1 = Zero energy band)
PC14 = Zero energy band
PC17 = Extra time for out-of-zone request
PC23 = Heat pump set point lower limit
PC24 = Heat pump set point upper limit
SP
ZEB
Compressor
start-up Compressor
shutdown
CW
leaving temp
SP
ZEB
Compressor
shutdown Compressor
start-up
CHW
leaving temp