Hitecsa ADVANCE EQRU-EQRUSS 2160 Manual De Instalación, Uso Y Mantenimiento página 93

2.7.8. INVP ACCESSORY - PUMP UNIT INVERTER REGULATION
With a pump at fixed speed, calibration/commissioning of the system can be carried out by acting on the traditional adjustment parts (e.g. calibration
valves) entering the pressure drops to compensate for the excessive head given by the pump (fig.1). By means of the INVP accessory, calibration/com-
missioning of the system can be carried out efficiently by acting on the speed of the electric pump to supply the right head required by the primary circuit
at the design flow rate (fig.2). The operation is carried out by accessing the PUMP menu from the controller onboard the machine and adjusting the speed
regulation parameters of the electric pump.
Please note: after calibration, the unit must work at constant flow rate. The accessory simplifies calibration and commissioning operations.
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Design flow rate
QP
Pump curve
CP
System characteristic curve
CI
CP V max Pump curve at maximum speed
Pump adjustment
RP
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