AERMEC NRGI User manual

21.05 – 5723410_01
Translation of Original instructions
www.aermec.com
User manual
NRGI
 CARD PCO5

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omissions.
SAFETY CERTIFICATIONS
Dear Customer,
Thank you for wanting to learn about a product Aermec. This product is the result of many years of experience and in-depth engineering research, and it is
built using top quality materials and advanced technologies.
The manual you are about to read is meant to present the product and help you select the unit that best meets the needs of your system.
However, please note that for a more accurate selection, you can also use the Magellano selection program, available on our website.
Aermec Aermec, always attentive to the continuous changes in the market and its regulations, reserves the right to make all the changes deemed necessary
for improving the product, including technical data.
Thank you again.
AERMEC S.p.A.

4
TABLE OF CONTENTS
1. User interface (PGD1).......................................................................p.6
Start-up procedure................................................................................p.6
Function of the PGD1 control panel keys......................................p.6
Menu structure........................................................................................p.6
2. Main menu.............................................................................................p.8
General monitor .....................................................................................p.8
System monitor.......................................................................................p.8
Circuit monitors......................................................................................p.8
Power demand monitor.......................................................................p.8
MASTER unit monitor ...........................................................................p.8
Free cooling monitor ............................................................................p.9
Glycolfree monitor.................................................................................p.9
Total recovery monitor.........................................................................p.9
PEC pressure control monitor............................................................p.9
3. Input/output menu........................................................................ p.10
Fan monitor........................................................................................... p.10
Outside temperature monitor........................................................ p.10
Defrosting monitor............................................................................. p.10
Multifunction input monitor........................................................... p.10
Analogue input monitor (U1) - (U2) ............................................. p.11
Analogue input monitor (U3) - (U4) ............................................. p.11
Analogue input monitor (U5) - (U6) - (U7).................................. p.11
Analogue input monitor (U8) - (U9) ............................................. p.11
PEC analogue input monitor (P1) - (P2) ...................................... p.11
PEC analogue input monitor PEC (T1) - (T2) - (T3) .................. p.11
PEC analogue input monitor (T4) - (T5) ...................................... p.12
PEC analogue input monitor (T6).................................................. p.12
Digital input monitor (ID1) - (ID2) - (ID3).................................... p.12
Digital input monitor (ID4) - (ID5) - (ID6).................................... p.12
Digital input monitor (ID7) - (ID8) - (ID9).................................... p.12
Digital input monitor (ID10) - (ID11) - (ID12)............................. p.13
Digital input monitor (ID13) - (ID14) - (ID15)............................. p.13
Digital input monitor (ID16) - (ID17) - (ID18)............................. p.13
Digital input monitor (NO1) - (NO2) - (NO3).............................. p.13
Digital input monitor (NO4) - (NO5) - (NO6).............................. p.14
Digital input monitor (NO7) - (NO8) - (NO9).............................. p.14
Digital input monitor (NO10) - (NO11) - (NO12) ...................... p.14
Digital input monitor (NO13) - (NO14) - (NO15) ...................... p.14
Digital input monitor (NO16) - (NO17) - (NO18) ...................... p.15
PEC digital input monitor (NO1) ~ (NO5) ................................... p.15
PEC digital input monitor (NO6) - (NO7) - (NO8) ..................... p.15
Analogue output monitor (Y1) ~ (Y5).......................................... p.15
4. ON/OFF menu................................................................................... p.16
General On/O..................................................................................... p.16
5. System menu..................................................................................... p.17
Selecting the system operating mode........................................ p.17
Setting the values for the primary sets ....................................... p.17
Setting the values for the secondary setpoints........................ p.17
Setting the time bands (a) and (b)................................................ p.17
Set the time bands (c) and (d) ........................................................ p.17
Copy/paste time bands..................................................................... p.18
Setting the season change from the calendar (heating)...... p.18
Setting the season change from the calendar (cooling)....... p.18
6. Recovery menu................................................................................. p.19
Enabling recovery ............................................................................... p.19
Set the recovery set value................................................................ p.19
7. Clock menu......................................................................................... p.20
Setting system date and time......................................................... p.20
Setting the automatic summer/winter time change............. p.20
Setting the public holidays on the calendar ............................. p.20
8. Installer menu ................................................................................... p.21
Password to access the installer menu (0000).......................... p.21

5
Setting the BMS 1 parameters........................................................ p.21
Enable change over and on/o by supervisor ......................... p.21
Sets the BMS2 parameters............................................................... p.21
Enables system on/o from digital input (ID17)...................... p.21
Setting thermostat regulation........................................................ p.22
Sets the logic for the setpoint and dierential in cooling
mode........................................................................................................ p.22
Sets the logic for the setpoint and dierential in heating
mode........................................................................................................ p.22
Climatic curve conguration in cooling mode......................... p.22
Climatic curve conguration in heating mode ........................ p.22
Total recovery conguration........................................................... p.23
Anti-freeze alarm conguration..................................................... p.23
Managing the pumps........................................................................ p.23
Congure anti-freeze management via the pump................. p.23
Conguration of the anti-freeze alarm on the total
recovery ................................................................................................. p.23
Congure fans at low temperatures............................................. p.24
Sets pump start-up for anti-freeze................................................ p.24
Multi-function input conguration (U10) .................................. p.24
Conguration of power limitation for input (U10).................. p.24
Conguration of the NTC signal for input (U10) ...................... p.24
Conguration of variable setpoint for input (U10) ................. p.25
Congure night mode control ....................................................... p.25
Conguration of the supplementary electric heaters ........... p.25
Sets the boiler as a replacement.................................................... p.25
Conguration of heater integration or replacement ............. p.25
Compressor hour counter monitor............................................... p.26
Compressor start-up monitor......................................................... p.26
Conguration of the fan speed...................................................... p.26
Congure Master Slave ..................................................................... p.26
Conguration of the fan speed in free cooling ........................ p.26
Free cooling conguration (yield control).................................. p.26
Glycol water management .............................................................. p.27
VPF management (general parameters)..................................... p.27
VPF management (Bypass 1 parameters)................................... p.27
VPF management (Bypass 2 parameters)................................... p.27
Unit information monitor................................................................. p.27
Sets the interface language............................................................. p.27
Conguration of the units of measure ........................................ p.28
Congures the installer menu password.................................... p.28
9. List of alarms...................................................................................... p.29

6
1 USER INTERFACE (PGD1)
The command panel of the unit allows the rapid setting of the working parameters
of the machine, and their visualisation. The card stores all the default settings and
any modications.
The installation of the remote panel PGD1 makes it possible to copy from remote all
the functions and settings available on the machine.
After the absence of voltage for any period of time, the unit is able to start up again
automatically, maintaining the original settings.
The main user interface is a graphic monitor with six navigation keys; the displays
are organised with a menu hierarchy, which is activated by pressing the navigation
keys. The default view of these menus is represented by the main menu; you can
navigate between the various parameters by using the arrow keys on the right-
hand side of the panel; these keys are also used to change the selected parameters.
1.1 START-UP PROCEDURE
After powering the unit, the control card will perform preliminary operations before
it is ready to be used; these initial procedures last about 60 seconds before they are
complete; two windows are displayed during the initial loading procedures (a start
window and one for selecting the system language); these windows are specied
below in the table.
NB: the system language can be set in the window shown at start-up,
or at any moment by changing the window contained in the installer
menu.
Start-up procedure:
16sWait please
This window indicates the seconds remaining until the software loaded in the unit
starts up (switching to the system language selection);
7
Language:
Push ENTER for change
ESC to conrm
ENGLISH
Time show mask:
Installer
This window makes it possible to select the language with which the system is
started;
1.2 FUNCTION OF THE PGD1 CONTROL PANEL KEYS
Function of the PGD1 control panel keys:
: Displays the list of active alarms and the alarm log
: Pressing this key activates navigation between the menus (orange LED on =
winter operating mode active);
: Pressing this key returns to the previous window;
: Pressing this key can have dierent functions:
— Pressing this key when navigating menus/parameters passes to the next menu/
parameter;
— Pressing this key when changing a parameter increases the value of the select-
ed parameter;
: Pressing this key can have dierent functions:
— Pressing this key when navigating menus enters the selected menu;
— Pressing this key when navigating parameters selects the displayed parameter
and enters change mode;
— Pressing this key when changing a parameter conrms the change to the value
of the selected parameter;
: Pressing this key can have dierent functions:
— Pressing this key when navigating menus/parameters passes to the previous
menu/parameter;
— Pressing this key when changing a parameter decreases the value of the select-
ed parameter;
1.3 MENU STRUCTURE
All the functions for managing the unit as well as the information about its opera-
tion are displayed on the unit control panel; all the functions and information are
organised into windows, which are in turn grouped in to menus.
When the unit is operating normally, a main menu is displayed, which is used to
select other operating menus.
The menus are displayed via the rotation of the icons that represent them; once
the desired icon is selected, the select menu opens, and it is possible to display or
change the corresponding parameters. The procedure for navigating the menus, or
changing the parameters, is explained in detail in the chapter "Operational utilisa-
tion procedures", to which reference is made for more information.
The image shows the relationships between the various menus and the keys used
for navigation;
NB: The following pages show all the masks contained in the menus
available to the user; Tampering with the parameters in the installer
menu could cause the unit to malfunction, therefore it is recommended
to have these parameters changed only by personnel assigned to unit
installation and conguration;

7
Menu icons:
IN/OUT: This menu contains advanced information about operating the unit;
ON/OFF: This menu is used to activate or deactivate the unit; it also provides
state information;
System: This menu is used to set the operating mode, the setpoints for water
production and the time bands to be applied to the system;
RECOVERY (if present in the unit):This menu allows to set the parameters re-
lated to the recovery management;
INSTALLER: This menu contains settings useful for the installer (Digital input
enabling, BMS conguration, adjustments, pumps, etc ...);
ASSISTANCE: This menu is not accessible except by authorized sta;
NB: this menu is password protected. The value to be set for access is:
0000
MANUFACTURER: This menu is not accessible except by authorized sta;
CLOCK: This menu contains the time settings for system management (date
and time, calendar);

8
2 MAIN MENU
2.1 GENERAL MONITOR
This mask is used to display the unit's general status:
9.8°C
15.0°C
EV CN
Aermec
100
1
Fri 08:35
— Current date and time
— Evaporator (EV) output temperature;
— Evaporator (EV) input temperature; when it is just below the value relative to
the evaporator input temperature, the icon of the currently active pump will
appear (with the relative number);
— Percentage of power (displayed graphically with a bar to the right of the evapo-
rator) requested by the system;
— Fan speed; percentage value displayed to the right of the condenser;
— Inverter compressor speed; value displayed as a percentage by a graphic bar
below the heat exchangers;
NB: some icons can appear at the bottom of this window, indicating cer-
tain system states:
— : anti-freeze heater activation;
— : Indicates that low output temperature anti-freeze prevention is active
(turns o the compressors)
— : indicates that the low charge function is active;
— : Indicates that the ow switch is open. The compressors are turned o and
the pumps release the ow switch
— : indicates that the compressor is on;
— : indicates that the compressor is o;
— : indicates a compressor alarm;
— : Indicates that high pressure capacity control is active;
2.2 SYSTEM MONITOR
This mask is used to display the system's general status:
37.0°C
100.0% 15.0%
84.7%100.0%
5.0°C
7.0°C
Setpoint
Di.
Outlet Temp.:
Ep Ei
Att:Req.:
Plant
— Current working setpoint;
— Current working dierential;
— Temperature probe for machine regulation;
— If a PI function is active, also the proportional factor“Ep” and the integral factor
“Ei” will be displayed;
— Requested percentage of power and percentage of power actually active on
the system side;
NB: some icons can appear in the window, indicating certain system
states:
— : system chilled water production;
— : system hot water production;
— : time bands active;
— : multifunction input;
2.3 CIRCUIT MONITORS
This mask is used to display the cooling circuit's general status; if the unit has mul-
tiple circuits, each will have a dedicated window:
23.1bar 39.5°C
6.4bar -2.6°C
14.8°C
80.8°C
50.0°C
CP1: 0s
CP2: 0s
AP: Tc:
Circuit 1
BP: Te:
T. Liquid.:
Discharge Temp.
T. Gas Prem. 2:
— AP: high pressure
— BP: low pressure
— Tc: condensation temperature
— Te: evaporating temperature
— T.Liquid: liquid temperature
— T.discharge gas: inverter compressor discharge gas temperature
— T.discharge gas 2: ON/OFF compressor discharge gas temperature
The status of the compressors can be:
— : indicates that the compressor is o, the (remaining) time to satisfy the min-
imum OFF time is indicated to the side;
— : indicates that the compressor is on, the (remaining) time to satisfy the min-
imum ON time is indicated to the side;
NB: if the card is restarted, there will be a 60 second wait to guarantee
the minimum shut-o time necessary for the inverter compressor driv-
er.
2.4 POWER DEMAND MONITOR
This mask is used to display the data related to the power demand on the indicated
circuit; if the unit has multiple circuits, each will have a dedicated window:
100.0%
84.7%
4500rpm
4000rpm
Inverter speed:
Needed speed:
Circuit 1:
Total require
Circuit 1
— Total thermostat request;
— Power delivered by circuit 1;
— Calculated speed (in rpm) for satisfying the thermostatic request at the current
operating conditions;
— Current speed of the inverter compressor (in rpm);
2.5 MASTER UNIT MONITOR
NB: this mask is only available on the Master unit, if the system has a
Master/Slave conguration with multiple units.
This mask is used to display the data related to the system's total power demand
and the relative power percentages divided among the units connected to the sys-
tem:

9
---°C
100.0%
100.0%
100.0%Circuit 2:
Circuit 1:
Total require
Common Outlet:
Master
— Common output (optional): probe water temperature on the common output
of the two master and slave unit outputs;
— Demand: power calculated by the Master unit thermostat that will be distribut-
ed between the two units;
— Unit 1: percentage power requested of the Master unit;
— Unit 2: percentage power requested of the Slave unit;
2.6 FREE COOLING MONITOR
WARNING: this mask is available on free cooling units.
This mask is used to display the status of the free cooling circuit:
FC
38%
14.2°C 10.0°C
0/092%
15.0°C
Freecooling
Potenza FC:
Tot:
— Activation of the 3-way valve with the display of moving arrows for pump status
and water circulation;
— Power delivered by the free cooling based on that available;
— Operating status;
— Tot: total power as a percentage delivered by the unit. If only free cooling, corre-
sponds to the total power delivered by free cooling, if mixed operation the total
power is the sum of the power delivered by free cooling and the compressors;
— Display of the values of the free cooling input (lower left), evaporator input (if FC
on, upper right) and evaporator output (lower right) probes;
Possible operating status:
— OFF (unit o);
— FC (unit only operating in free cooling);
— FC+CP (unit in mixed operation);
— CP (unit operating with compressors only);
2.7 GLYCOLFREE MONITOR
WARNING: this mask is available on glycolfree units.
This mask is used to display the status of the glycolfree circuit:
FC
41/094%
41%
14.7°C
14.2°C
14.1°C
15.0°C
GlicoleFree
Potenza FC:
Totale:
— Activation of the branch containing glycol with the display of moving arrows for
pump status and water circulation;
— Power delivered by the free cooling based on that available;
— Tot: total power as a percentage delivered by the unit. If only free cooling, corre-
sponds to the total power delivered by free cooling, if mixed operation the total
power is the sum of the power delivered by free cooling and the compressors;
— Display of the values of the free cooling output (upper left), free cooling input
(lower left), intermediate evaporator (upper right) and evaporator input (lower
right) probes;
— Operating status;
Possible operating status:
— OFF (unit o);
— FC (unit only operating in free cooling);
— FC+CP (unit in mixed operation);
— CP (unit operating with compressors only);
2.8 TOTAL RECOVERY MONITOR
WARNING: this mask is available on units with total recovery.
This mask is used to display the status of the total recovery:
42.2°C
43.8°C
0%
Recupero Totale
Ingresso acqua:
Uscita acqua:
O generale
Richiesta:
— Display of the water temperature value of the total recovery input probe;
— Display of the water temperature value of the total recovery output probe;
Total recovery status:
— ow switch open (water is not circulating in the hydraulic circuit of the recovery
system and therefore it is disabled);
— enabled (water is circulating in the hydraulic circuit of the recovery system and
therefore it is enabled);
— general o (the whole unit is in stand-by), o from the display (general disa-
bling of the unit from the pGD1 button);
2.9 PEC PRESSURE CONTROL MONITOR
This mask is used to display the result of the control on the machine pressure delta,
controlled by the PEC card:
:
in progress...
Pressure delta control
PEC
Circuit 1
If the result of the pressure delta control is greater than 15 bar (and the 4-way must
switch), the valves must be controlled without the activation of the compressors to
reduce the pressure delta; Alarms (warnings) are not generated in this situation).
If the control is less than 3 bar (hot/cold operation or a 4-way must switch), the
compressors are started without the valve control in order to create the pressure
delta; after 300s in this situation an alarm is generated with a machine block.

10
3 INPUT/OUTPUT MENU
3.1 FAN MONITOR
This window summarises the state of the fans and the utilised setpoints:
100%
0.0bar
0.0bar
0.0bar1:Max Speed
Di:
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;
— Di: Ventilation setpoint dierential: this value indicates the current dierential
applied to the ventilation setpoint;
The state of the fans (displayed on the row at the bottom of the window), can be:
— OFF: fans o;
— 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
15.0°C
15.0°C
15.0°C
15.0°C
Outdoor temp.
Yester.
Today
3.3 DEFROSTING MONITOR
This window contains the information concerning the state of defrosting on the
unit:
0s
25.1°C
0mNext defrost:
Liquid T.:
Times:
High ext. temperature
Disabled
Defrost
The state of defrosting is divided between two rows, the rst 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;

11
3.5 ANALOGUE INPUT MONITOR (U1) - (U2)
25.8°C
Inputs pCO5
37.8°Cevap.:
U2= Outlet Temp.water
evap.:
U1= Inlet Temp.water
U1: shows the heat exchanger inlet water temperature;
U2: this value represents the temperature of the water leaving the heat exchanger;
3.6 ANALOGUE INPUT MONITOR (U3) - (U4)
647mbar
20.3°C
U4= Boiler temp.:
pressure:
U3= Dierential
Inputs pCO5
U3: this value represents the dierential pressure;
U4: this value represents the storage tank temperature (if present);
3.7 ANALOGUE INPUT MONITOR (U5) - (U6) - (U7)
NB: this mask will be complete only in freecooling models;
U5 =
U6 =
U7 =
13.9°C
13.9°C
15.8°C
Inputs pCO5
Temp. ingresso FC
Temp. uscita FC
Temp. scambiatore
U5: this value represents the free cooling input temperature;
U6: this value represents the free cooling output temperature;
U7: this value represents the temperature on the intermediate glycol-free heat ex-
changer;
3.8 ANALOGUE INPUT MONITOR (U8) - (U9)
25.2°C
25.1°C
Inputs pCO5
U9= Liquid temp. 2
U8= Liquid temp. 1
U8: this value represents the temperature of the liquid on coil 1
U9: this value represents the temperature of the liquid on coil 2
3.9 PEC ANALOGUE INPUT MONITOR (P1) - (P2)
9.0bar
20.0bar
Inputs PEC
P2= High press.circ.1
P1= Low press.circ.1
P1: this value represents the low pressure detected by the transducer;
P2: this value represents the high pressure detected by the transducer;
3.10 PEC ANALOGUE INPUT MONITOR PEC (T1) - (T2) - (T3)
T1= ---
6.0°C
15.0°C
Inputs PEC
T3= External temp.
T2= Suction temp.
T1: currently not used;
T2: this value represents the intake temperature;
T3: this value represents the outside air temperature;

12
3.11 PEC ANALOGUE INPUT MONITOR (T4) - (T5)
25.0°C
50.0°CCP1
Inputs PEC
T5= Discharge temp.
T4= Liquid temp.
T4: this value represents the temperature of the liquid;
T5: this value represents the temperature of the discharge gas on compressor 1;
3.12 PEC ANALOGUE INPUT MONITOR (T6)
CP1A 50.0°C
Inputs PEC
T6= Discharge temp.
T6: this value represents the temperature of the discharge gas on compressor 1A;
3.13 DIGITAL INPUT MONITOR (ID1) - (ID2) - (ID3)
Inputs pCO5
Closed
ID3:Fan overload 1
Closed
ID2:High press. C1
Closed
ID1:Flow switch
ID1: this value represents the state of the digital input connected to the evaporator
ow switch:
— OPEN: ow switch alarm;
— CLOSED: normal operation;
ID2: this value represents the state of the digital input connected to the circuit 1
high pressure switch:
— OPEN: high pressure pressostat alarm;
— CLOSED: normal operation;
ID3: this value represents the state of the digital input connected to the circuit 1 fan
thermomagnetic switch:
— OPEN: circuit breaker alarm;
— CLOSED: normal operation;
3.14 DIGITAL INPUT MONITOR (ID4) - (ID5) - (ID6)
Inputs pCO5
Closed
ID6:Overl.comp2 circ1
Closed
ID5:Overl.comp1 circ1
Closed
ID4:Al. phase monitor
ID4: shows the binary status read from the input of the phase control device, which
can be:
— OPEN: phase control device in alarm;
— CLOSED: normal operation;
ID5: this value represents the state of the digital input connected to compressor
thermomagnetic switch 1 on circuit 1:
— OPEN: circuit breaker alarm;
— CLOSED: normal operation;
ID6: this value represents the state of the digital input connected to compressor
thermomagnetic switch 2 on circuit 1:
— OPEN: circuit breaker alarm;
— CLOSED: normal operation;
3.15 DIGITAL INPUT MONITOR (ID7) - (ID8) - (ID9)
Inputs pCO5
Closed
ID9:Fans ovrl series
Closed
ID8:Leak detector
Closed
ID7:Low press C1
ID7: this value represents the state of the digital input connected to the low pres-
sure switch on circuit 1:
— OPEN: low pressure switch alarm;
— CLOSED: normal operation;
ID8: this value represents the state of the digital input connected to the gas leak
control:
— OPEN: leak detector alarm;
— CLOSED: normal operation;
ID9: this value represents the state of the digital input connected to fan thermo-
magnetic fan switch on circuit 1:
— OPEN: circuit breaker alarm;
— CLOSED: normal operation;

13
3.16 DIGITAL INPUT MONITOR (ID10) - (ID11) - (ID12)
ID11: ---
ID12: ---
Inputs pCO5
Open
ID10:2nd Set enable
ID10: this value represents the state of the digital input connected to the secondary
setpoint:
— OPEN: secondary setpoint active;
— CLOSED: secondary setpoint not active;
If the unit is glycol-free, the values for inputs ID11 and ID12 are:
ID11: this value represents the state of the digital input linked to the ow switch on
the intermediate glycol-free heat exchanger:
— OPEN: ow switch alarm;
— CLOSED: normal operation;
ID12: this value represents the state of the digital input linked to the pump (glycol
side):
— OPEN: circuit breaker alarm;
— CLOSED: normal operation;
If the unit oers total recovery, the values for inputs ID11 and ID12 are:
ID11: this value represents the state of the digital input linked to the external re-
covery pump:
— OPEN: circuit breaker alarm;
— CLOSED: normal operation;
ID12: this value represents the state of the digital input linked to the ow switch on
the recovery line:
— OPEN: ow switch alarm;
— CLOSED: normal operation;
3.17 DIGITAL INPUT MONITOR (ID13) - (ID14) - (ID15)
ID13: ---
Inputs pCO5
Closed
ID15:Overl.pump2 plant
Closed
ID14:Overl.pump1 plant
ID14: this value represents the state of the digital input connected to pump 1:
— OPEN: circuit breaker alarm;
— CLOSED: normal operation;
ID15: this value represents the state of the digital input connected to pump 2:
— OPEN: circuit breaker alarm;
— CLOSED: normal operation;
3.18 DIGITAL INPUT MONITOR (ID16) - (ID17) - (ID18)
Inputs pCO5
Closed
Closed
ID17:On-O
Closed
ID16:Remote Cool/Heat
ID18:Abilita multifunz.
ID16: this value represents the state of the digital input connected to the remote
season change function:
— OPEN: remote season change not active;
— CLOSED: remote season change active;
ID17: this value represents the state of the digital input connected to the remote
ON/OFF function:
— OPEN: remote ON/OFF not active;
— CLOSED: remote ON/OFF active;
ID18: this value represents the state of the digital input connected to the function
specied for the multifunction input U10 (this function is specied in the installer
menu):
— OPEN: multifunction contact not enabled;
— CLOSED: multifunction contact active;
3.19 DIGITAL INPUT MONITOR (NO1) - (NO2) - (NO3)
Output pCO5
Closed
NO3:Sanitary V3V
Closed
NO2:Inverter contactor
Closed
NO1:Pump 1
NO1: this value represents the state of the digital output connected to activation of
the pump on circuit 1:
— OPEN: load not active;
— CLOSED: load active;
NO2: this value represents the state of the digital output connected to the inverter
contactor:
— OPEN: load not active;
— CLOSED: load active;
NO3: this value represents the state of the digital output connected to activation of
the 3-way plumbing valve:
— OPEN: load not active;
— CLOSED: load active;

14
3.20 DIGITAL INPUT MONITOR (NO4) - (NO5) - (NO6)
Output pCO5
Closed
NO6:Crankcase resist.
Open
NO5:Integ.resistance 2
Open
NO4:Int.res.1/Boiler
NO4: this value represents the state of the digital output connected to activation of
the supplementary heater 1 or boiler:
— OPEN: load not active;
— CLOSED: load active;
NO5: this value represents the state of the digital output connected to activation of
the supplementary heater 2 or boiler:
— OPEN: load not active;
— CLOSED: load active;
NO6: this value represents the state of the digital output connected to activation
of the carter heater:
— OPEN: load not active;
— CLOSED: load active;
3.21 DIGITAL INPUT MONITOR (NO7) - (NO8) - (NO9)
NO9: ---
Output pCO5
Open
NO8:Serious alarm
Closed
NO7:Fan 1
NO7: this value represents the state of the digital output connected to activation
of fan 1:
— OPEN: load not active;
— CLOSED: load active;
NO8: this value represents the state of the digital output connected to the presence
of a serious alarm:
— OPEN: load not active;
— CLOSED: load active;
If the unit oers total recovery, the values for output NO9 are:
NO9: this value represents the state of the digital output linked to the recovery line
exchanger heater:
— OPEN: load not active;
— CLOSED: load active;
3.22 DIGITAL INPUT MONITOR (NO10) - (NO11) - (NO12)
NO10: ---
NO11: ---
NO12: ---
Output pCO5
If the unit is glycol-free or free cooling, the values for output NO12 are:
NO12: this value represents the state of the digital output linked to the 3-way free
cooling valve:
— OPEN: load not active;
— CLOSED: load active;
If the unit oers total recovery, the values for outputs NO10, NO11 and
NO12 are:
NO10: this value represents the state of the digital output linked to the pump (re-
covery side):
— OPEN: load not active;
— CLOSED: load active;
NO11: this value represents the state of the digital output linked to the recovery
bleed valve:
— OPEN: load not active;
— CLOSED: load active;
NO12: this value represents the state of the digital output linked to the condenser
bleed valve:
— OPEN: load not active;
— CLOSED: load active;
3.23 DIGITAL INPUT MONITOR (NO13) - (NO14) - (NO15)
NO13: ---
NO14: ---
Output pCO5
Open
NO15:Base resistance 1
NO15: this value represents the state of the digital output connected to activation
of the heater on base 1:
— OPEN: load not active;
— CLOSED: load active;
If the unit is glycol-free, the values for outputs NO13 and NO14 are:
NO13: this value represents the state of the digital output linked to the activation
of the heater (glycol side):
— OPEN: load not active;
— CLOSED: load active;
NO14: this value represents the state of the digital output linked to the activation
of the pump (glycol side):
— OPEN: load not active;
— CLOSED: load active;
If the unit oers total recovery, the values for output NO13 are:
NO13: this value represents the state of the digital output linked to the activation of
the 3-way total recovery valve:
— OPEN: load not active;
— CLOSED: load active;

15
3.24 DIGITAL INPUT MONITOR (NO16) - (NO17) - (NO18)
Output pCO5
Open
NO18:Pump 2
Open
NO17:Antifreeze Heater
Open
NO16:Base resistance 2
NO16: this value represents the state of the digital output connected to activation
of the heater on base 2:
— OPEN: load not active;
— CLOSED: load active;
NO17: this value represents the state of the digital output connected to activation
of the anti-freeze heater:
— OPEN: load not active;
— CLOSED: load active;
NO18: this value represents the state of the digital output connected to activation
of pump 2:
— OPEN: load not active;
— CLOSED: load active;
3.25 PEC DIGITAL INPUT MONITOR (NO1) ~ (NO5)
NO1: ----
NO2: ----
NO3: ----
NO4: ----
Output PEC
Open
NO5: VIC circuit 1
NO5: this value represents the state of the digital output connected to activation of
the reverse cycle valve on circuit 1:
— OPEN: load not active;
— CLOSED: load active;
3.26 PEC DIGITAL INPUT MONITOR (NO6) - (NO7) - (NO8)
NO6: ----
NO8: ----
Output PEC
Open
(xed speed)
NO7: comp. 2 circ. 1
NO7: this value represents the state of the digital output connected to activation of
compressor 2 on circuit 1:
— OPEN: load not active;
— CLOSED: load active;
3.27 ANALOGUE OUTPUT MONITOR (Y1) ~ (Y5)
Y1= DCP1 0
Y2= V3V VPF
Y3= ----
Y4= ----
Y5= ----
0
Output pCO5
Y1: this value indicates the current value of the analogue output connected to mod-
ulating fan group 1;
Y2: this value indicates the current value of the analogue output connected to the
variable ow rate modulating valve;

16
4 ON/OFF MENU
4.1 GENERAL ON/OFF
This window makes it possible to view the general state of the system as well as to
turn the unit on or o:
On/O Unit
NO
General enable:
O General
Plant
Display of the general system state:
— Enabled: the system regulates via the main probe based on the system setpoint;
— O due to alarm: system o due to serious alarm;
— General o: system turned o by general enabling (see the paragraph de-
scribed below "General enabling”);
— O by BMS: system turned o by the supervision system;
— O by clock: system turned o by time bands;
— O by dig. input: system turned o by digital input (ID17);
— O by display: system turned o by terminal, control system screen;
— O by master: system turned o by master in master/slave conguration;
— Out of operating limits: system out of machine operating limits;
— Replacement boiler: replacement boiler active;
It is possible to change the unit state in the last row. If NO is selected, the entire
system will be put in stand-by mode, if YES is selected the machine is turned on.

17
5 SYSTEM MENU
5.1 SELECTING THE SYSTEM OPERATING MODE
This mask is used to display the current unit state, to turn the unit on or o and to
select the operating mode:
HEATING
Mode Selection:
YES
Switch On:
O General
Plant
Enable: allows to select the mode with which to turn the unit on or o; the available
options are:
— OFF: the system does not produce hot/chilled water;
— YES: the system regulates via the main probe based on the system setpoint;
— YES WITH SET2: the system regulates via the main probe based on setpoint 2;
— BY CLOCK: the system regulates only when time bands are active;
Mode selection: allows to select the operating mode used to operate the unit; the
available options are:
— COOLING: the system is in cooling mode;
— HEATING: the system is in heating mode;
— FROM OUTSIDE TEMP.: summer or winter mode is selected based on the outside
temperature;
— FROM DIG. INPUT: if the digital contact closes, the hot mode is selected;
— BY SUPERVIS.: the BMS system controls remotely;
— BY CALENDAR: hot mode is selected by the calendar;
5.2 SETTING THE VALUES FOR THE PRIMARY SETS
This mask is used to set the values to assign to the primary working setpoints:
7.0°C
45.0°C
Setpoint 1
Plant
The primary working setpoints are:
— : setpoint 1 for cooling mode;
— : setpoint 1 for heating mode;
5.3 SETTING THE VALUES FOR THE SECONDARY
SETPOINTS
This mask is used to set the values to assign to the secondary working setpoints:
12.0°C
40.0°C
Setpoint 2
Plant
The secondary working setpoints are:
— : setpoint 2 for cooling mode;
— : setpoint 2 for heating mode;
5.4 SETTING THE TIME BANDS (A) AND (B)
NB: this mask is only visible if "BY CLOCK" is selected on the page "Se-
lecting the system operating mode";
This mask is used to set the times and action to assign to the time bands (a) and (b):
a
b
08:00
16:00 22:00
12:00 ON
SEL
ON
Plant
MONDAYDay
Timezone
It is possible to assign up to four time bands (a, b, c, d) for each day of the week,
during which a specic action can be selected:
— ON: system on with setpoint 1 (nominal);
— SET2: system on with setpoint 2;
— OFF: system o;
NB: the system keeps the system o outside the time bands.
5.5 SET THE TIME BANDS (C) AND (D)
NB: this mask is only visible if "BY CLOCK" is selected on the page "Se-
lecting the system operating mode";
This mask is used to set the times and action to assign to the time bands (c) and (d):
c
d
08:00
16:00 22:00
12:00 ON
SEL
ON
Plant
MONDAYDay
Timezone
It is possible to assign up to four time bands (a, b, c, d) for each day of the week,
during which a specic action can be selected:
— ON: system on with setpoint 1 (nominal);
— SET2: system on with setpoint 2;
— OFF: system o;
NB: the system keeps the system o outside the time bands.

18
5.6 COPY/PASTE TIME BANDS
NB: this mask is only visible if "BY CLOCK" is selected on the page "Se-
lecting the system operating mode";
This mask is used to copy and paste the time bands set for a day of the week to
another (or to all other days):
---
Plant
NOCopy to
MONDAYDay
Timezone
5.7 SETTING THE SEASON CHANGE FROM THE CALENDAR
(HEATING)
NB: this mask is only visible if "BY CALENDAR" is selected on the page
"Selecting the system operating mode";
This mask is used to set the start and end date for heating mode:
0/---
0/---
Cooling/Heating
Finish Heating
Start Heating
Calendar
Select Cool/Heat with
5.8 SETTING THE SEASON CHANGE FROM THE CALENDAR
(COOLING)
NB: this mask is only visible if "BY CALENDAR" is selected on the page
"Selecting the system operating mode";
This mask is used to set the start and end date for cooling mode:
27.0°C
13.0°C
Cooling/Heating
Set ON heating
Set ON cooling
Outdoor temperature
Select Cool/Heat with

19
6 RECOVERY MENU
6.1 ENABLING RECOVERY
WARNING: this mask is available on units with total recovery.
This mask is used to display the actual status of the total recovery, and to enable or
disable the total recovery:
YES
Switch On:
O General
The mask displays the total recovery status;the available options are:
— ow switch open (water is not circulating in the hydraulic circuit of the recovery
system and therefore it is disabled);
— enabled (water is circulating in the hydraulic circuit of the recovery system and
therefore it is enabled);
— general o (whole unit in stand-by);
— o from display (general disabling of the unit from the pGD1 button);
Enable: allows to enable or disable the total recovery;
6.2 SET THE RECOVERY SET VALUE
WARNING: this mask is available on units with total recovery.
This mask allows to view and set the value to be assigned to the recovery work set
(default value 45° C, setting range 30~50° C):
Setpoint 1: 45.0°C

20
7 CLOCK MENU
7.1 SETTING SYSTEM DATE AND TIME
This mask is used to set the system date and time:
16 MARZ 2020
16:29
Clock
Hour:
Time:
MONDAYDay:
7.2 SETTING THE AUTOMATIC SUMMER/WINTER TIME
CHANGE
This mask is used to set the automatic change between summer and winter time, it
is also possible to dene the day the change is made:
02:00
03:00
Clock
YES
alleOctober
in
alleMarch
in
SUNDAYEnd: LAST
SUNDAY
LAST
Start:
Hour solar/legal:
Automatic change
7.3 SETTING THE PUBLIC HOLIDAYS ON THE CALENDAR
This mask is used to set the days (up to 5 intervals) to mark as "holidays" (therefore
to activate the relative time programming previously specied for the holiday time
band), or set the o mode for the system:
25/DIC. 26/DIC. ---
15/LUGL 15/LUGL ---
0/--- 0/--- ---
0/--- 0/--- ---
0/--- 0/--- ---
Calendar
ActionFinishStart