AERMEC NRGI - Glycol water management; VPF management (general parameters); Unit information monitor

27
1.5°C
180s
Fans
Frecooling
Controllo resa
Delta T:
Tempo di controllo:
Delta T: delta T generated at the maximum fan speed;
Control time: yield control bypass time given by the input in free cooling;
8.32 GLYCOL WATER MANAGEMENT
This window is used to enable or disable the use of glycol water:
Installer
YESEnable:
management.
Glycol water
Enable: this value indicates if the unit uses glycol water; the possible states are:
— No: glycol water management is disabled;
— 1: Yes: glycol water management is enabled, in particular the following pa-
rameters are modied: minimum setpoint limit in cooling mode, low pressure
threshold in cooling mode, anti-freeze heater threshold and force o thresholds
in cooling mode;
8.33 VPF MANAGEMENT (GENERAL PARAMETERS)
This window is used to set the general parameters for the VPF (Variable Primary
Flow):
150mbar
100mbar
180s
Variable primary ow
NO
Integral:
Di.:
Setpoint:
Dierential pressure.
Enable:
Enable: this value indicates whether to activate or deactivate this mode; the pos-
sible states are:
— No: VPF management disabled;
— Yes: VPF management enabled;
Setpoint: indicates the pressure value that the regulation tries to maintain at the
ends of the evaporator, by opening and closing the bypass valve;
Di.: dierential used when regulating the bypass valve;
Integral: integral time used when regulating the bypass valve;
8.34 VPF MANAGEMENT (BYPASS 1 PARAMETERS)
This window is used to set the bypass parameters for the VPF (Variable Primary
Flow):
4.0V
8.0V
0mbar
1000mbar
Variable primary ow
Transd. 20mA:
Transd. 4mA:
Bypass max:
Bypass min:
Bypass min: this value indicates the minimum Volts corresponding to the minimum
water bypass. All the water passes through the system;
Bypass max: this value indicates the maximum Volts corresponding to the maxi-
mum water bypass. All the water recirculates through the bypass;
Transd. 4mA; this value indicates the mbar at 4mA read by the dierential trans-
ducer;
Transd. 20mA: this value indicates the mbar at 20mA read by the dierential trans-
ducer;
8.35 VPF MANAGEMENT (BYPASS 2 PARAMETERS)
This window is used to set the bypass parameters for the VPF (Variable Primary
Flow):
647mbar
100.0%
0.0%
0.0V
0.0V
Variable primary ow
By-pass test:
Opening:
Integral:
Proportional:
Valve by-pass.
Pressure:
Pressure: indicates the current value measured by the dierential transducer;
Proportional: indicates the proportional component when calculating the bypass
opening;
Integral: indicates the integral component when calculating the bypass opening;
Opening: indicates the current valve opening command;
Test bypass: indicates the forced valve command to use as a test. set to deactivate
forcing;
8.36 UNIT INFORMATION MONITOR
This window contains information concerning the unit code, the software version
and the machine test date:
Aermec S.p.A.
NRGI602XH°A°J°00
Ver.: 0.1.000 16/03/20
16:09 16/03/20
Informazioni
Testing date:
Code:
8.37 SETS THE INTERFACE LANGUAGE
This window is used to select the display language. Press “ENTER” to cycle the avail-
able languages: