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Verfügbare Sprachen
Verfügbare Sprachen
PLI
System side pumps
PLP
Primary side pumps
DSC
Disconnector
S∆P
Probe ∆P (by the customer)
UT
Utility
NOTES on the installation:
1. If a cooling unit with VPF technology is installed, a tank must be installed to guarantee minimum water content of 5 l/kw on the primary side. At least
20% of the flow must be guaranteed on the system side by installing a minimum number of terminals fitted with 3-way valves V3
2. The probe to determine the ΔP pressure differential is a standard supply. The installer can set the probe remotely in the most appropriate point in the
system.
3. Probes T1 and T4 are supplied and must be installed on the return side of the system, as shown in the figure: T1 before the hydraulic disconnector and
T4 after.
VPF_R (Variable Primary Flow in the main exchanger). VPF_R includes the temperature probs, the inverter management and the management software of
the chiller;
VPF_R+INVERTER P1/DP1 (Variable Primary Flow in the main exchanger). The accessory includes management via inverter of the primary side pump(s)
supplied as optional P1/DP1, (check that the total water content is at least 5lt/kW), the temperature probes and the management software of the chiller
VPF_R+INVERTER P2/DP2 (Variable Primary Flow in the main exchanger). The accessory includes management via inverter of the primary side pump(s)
supplied as optional P1/DP1, (check that the total water content is at least 5lt/kW), the temperature probes and the management software of the chiller
2.9.6. 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/commissioning 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 parame-
ters of the electric pump.
Please note: after calibration, the unit must work at constant flow rate. The accessory simplifies calibration and commissioning operations.
H5xxxxx
70
QP
Design flow rate
CP
Pump curve
CI
System characteristic curve
CP V max Pump curve at maximum speed
RP
Pump adjustment
EasyPACK ECO - Nias
70
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