Evco c-pro nano HPR0 Manual do Utilizador descarregar pdf (Página 22)

C-PRO NANO HPR0 APPLICATION MANUAL

Page 22

5.3 Regulation and management of the compressors

The controller can manage up to a maximum of 2 compressors. Digital outputs for switch-on/off

and protection inputs (pressure switches) are associated with every compressor. Switch-on/off is

defined depending on the set/outlet temperature, some timing and request of the room thermostat

and the indoor thermostat.

The compressor switch-on control takes place on the basis of the outlet temperature AI1.

The following figure shows the behaviour of the regulation in the case of summer functioning

(chiller). The regulation requests compressor switch-on on the basis of the outlet temperature value.

In this regulation, the band is shifted completely over the setpoint.

However, in winter functioning mode (heat pump), the band is shifted completely below the set-

point:

Compressor ON

Pump ON

SETH

Outlet temperature

Compressor ON

Pump ON

SETC

SETC +

Outlet temperature

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