AERMEC NRGI User Manual Download Page 10

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INPUT/OUTPUT MENU

3.1 FAN MONITOR

This window summarises the state of the fans and the utilised setpoints:

100%

0.0bar

1:Max Speed

Diff:

Set:

Speed

Fan

— Speed: this value indicates the current speed (as a percentage) at which the

concerned fans are operating (common, circuit 1 or circuit 2);

— Set: Fan setpoint: this value indicates the current ventilation setpoint;
— Diff: Ventilation setpoint differential: this value indicates the current differential

applied to the ventilation setpoint;

The state of the fans (displayed on the row at the bottom of the window), can be:
—  OFF: fans off;
—  PREVENTILATION: fans ON before the compressors;
—  high pressure: control based on high pressure;
—  POSTVENTILATION: ventilation after compressor OFF;
—  ANTI-FREEZE: ventilation phase to prevent the accumulation of snow or the

formation of ice;

—  DEFROSTING: defrosting phase in progress;
—  Equalisation: control based on low temperature;
—  MAXIMUM SPEED: fans at maximum speed;
—  SILENCED: speed reduced to reduce noise

3.2 OUTSIDE TEMPERATURE MONITOR

This window indicates the value of the outside temperature detected by the unit:

15.0°C

Outdoor temp.

Yester.

Today

3.3 DEFROSTING MONITOR

This window contains the information concerning the state of defrosting on the
unit:

25.1°C

Next defrost:

Liquid T.:

Times:

High ext. temperature

Disabled

Defrost

The state of defrosting is divided between two rows, the first can have the following
states:
—  Disabled: defrosting is disabled;
—  Wait for cycle inversion: pause before inversion of the cycle valve;
—  Defrosting start: defrosting during the start phase;
—  Defrosting in progress: defrosting phase;
—  End of defrosting: conclusion of defrosting;
The second row can have the following states:
—  High outside temperature: the air temperature is above the defrosting enabling

threshold;

— Start CP: compressor just started, wait for defrosting bypass time;
— Start for LP limit: start of the defrosting due to exceeding the low pressure limit

threshold;

— LP above the limit threshold: the low pressure is above the limit threshold to

trigger defrosting;

— Min times between defrosting procedures: the defrosting is disabled to respect

the minimum time between defrosting procedures;

— Liquid Temp OK: the temperature of the liquid exceeded the threshold for deter-

mining the end of defrosting;

— Min defrosting times: defrosting continues until exceeding the minimum de-

frosting time even if the output conditions were already reached;

— Start for TGP: defrosting was activated due to exceeding the temperature

threshold of the discharge gas;

—  Forced: defrosting was forced by the user;
The following data is available in the lower part of the window:
—  Times: displays the seconds related to the defrosting times;
—  T.Liquid: temperature of the liquid to determine the defrosting output;
—  Next defrosting: displays the minutes until the next defrosting;

3.4 MULTIFUNCTION INPUT MONITOR

This window contains the information concerning the state of the multifunction
input:

(ID18):

pCO5 U10=

45.0°C

Variable SetPoint

ACTIVE

Input Multifunction

Plant

Digital Input ID18: this value indicates the state of the digital input connected to
multifunction input (U10) enabling, whose states can be:
— OPEN: multifunction input (U10) NOT ENABLED;
— CLOSED: multifunction input (U10) ENABLED;
The functions currently selected for the multifunction input U10 are displayed at
the bottom of the window; to set that function, refer to the dedicated paragraph
in the installer menu;