AERMEC PCO5 User manual

22/09 – 5723310_03
Translation of Original instructions
www.aermec.com
User manual
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 CARD PCO5  PANEL PGD1

This marking indicates that this product should not be disposed with other household wastes throughout the EU. To prevent possible harm to the envi-
ronment or human health from uncontrolled disposal of Waste Electrical and Electronic Equipment (WEEE), please return the device using appropriate
collection systems, or contact the retailer where the product was purchased. Please contact your local authority for further details. Illegal dumping of
the product by the user entails the application of administrative sanctions provided by law.
All specications are subject to change without prior notice. Although every eort has been made to ensure accuracy, Aermec shall not be held liable for any errors or
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.9
Free cooling monitor ............................................................................p.9
Glycol Free Monitor ...............................................................................p.9
DK unit monitor......................................................................................p.9
Total recovery monitor...................................................................... p.10
PEC pressure control monitor......................................................... p.10
3. Input/output menu........................................................................ p.11
Fan monitor........................................................................................... p.11
Outside temperature monitor........................................................ p.11
Defrosting monitor............................................................................. p.11
Multifunction input monitor........................................................... p.12
I/O Monitor........................................................................................... p.12
Analogue inputs.................................................................................. p.13
Digital inputs ........................................................................................ p.14
DIGITAL outputs.................................................................................. p.15
ANALOGUE outputs ........................................................................... p.16
Analogue inputs (PEC)....................................................................... p.16
Digital output (PEC)............................................................................ p.16
Analogue Inputs (EVD)...................................................................... p.17
Analogue Inputs (pCOE free cooling models) .......................... p.17
Digital outputs (pCOE free cooling models).............................. p.17
Analogue Inputs (pCOE - glycolfree models)............................ p.17
Digital Inputs (pCOE - glycolfree models) .................................. p.17
Digital outputs (pCOE - glycolfree models)............................... p.17
Analogue Inputs (pCOE models with total recovery)............. p.17
Digital Inputs (pCOE models with total recovery)................... p.18
Digital outputs (pCOE models with total recovery)................ p.18
Analogue Inputs (pCOE - DK).......................................................... p.18
Analogue Inputs (pCOE - Variable ow rate /
Supplementary heater)..................................................................... p.18
Digital outputs (pCOE - Variable ow rate /
Supplementary heater);.................................................................... p.18
Digital Inputs (pCOE - Variable ow rate / Supplementary
heater);.................................................................................................... p.19
Analogue Inputs (pCOE - NRG Large); ......................................... p.19
Digital inputs (pCOE - NRG Large);................................................ p.19
Digital outputs (pCOE - NRG Large);............................................ p.19
4. ON/OFF menu................................................................................... p.20
General On/O..................................................................................... p.20
5. System menu..................................................................................... p.21
Selecting the system operating mode........................................ p.21
Setting the values for the primary sets ....................................... p.21
Setting the values for the secondary setpoints........................ p.21
Setting the time bands (a) and (b)................................................ p.21
Set the time bands (c) and (d) ........................................................ p.22
Copy/paste time bands..................................................................... p.22
Setting the season change from the calendar (heating)...... p.22
Setting the season change from the calendar (cooling)....... p.22
6. Recovery menu................................................................................. p.23
Enabling recovery ............................................................................... p.23
Set the recovery set value................................................................ p.23
7. Clock menu......................................................................................... p.24
Setting system date and time......................................................... p.24
Setting the automatic summer/winter time change............. p.24

5
Setting the public holidays on the calendar ............................. p.24
8. Installer menu ................................................................................... p.25
Password to access the installer menu (0000).......................... p.25
Setting the BMS 1 parameters........................................................ p.25
Enable change over and on/o by supervisor ......................... p.25
Sets the BMS2 parameters............................................................... p.25
Enables system on/o from digital input (ID17)...................... p.26
Setting thermostat regulation........................................................ p.26
Sets the logic for the setpoint and dierential in cooling
mode........................................................................................................ p.26
Sets the logic for the setpoint and dierential in heating
mode........................................................................................................ p.26
Climatic curve conguration in cooling mode......................... p.26
Climatic curve conguration in heating mode ........................ p.27
Total recovery conguration........................................................... p.27
Anti-freeze alarm conguration..................................................... p.27
Managing the pumps........................................................................ p.27
Congure anti-freeze management via the pump................. p.27
Conguration of the anti-freeze alarm on the total
recovery ................................................................................................. p.27
Congure fans at low temperatures............................................. p.28
Sets pump start-up for anti-freeze................................................ p.28
Multi-function input conguration (U10) .................................. p.28
Conguration of power limitation for input (U10).................. p.28
Conguration of the NTC signal for input (U10) ...................... p.28
Conguration of variable setpoint for input (U10) ................. p.29
Congure night mode control ....................................................... p.29
Conguration of the supplementary electric heaters ........... p.29
Sets the boiler as a replacement.................................................... p.29
Conguration of heater integration or replacement ............. p.29
Compressor hour counter monitor............................................... p.29
Compressor start-up monitor......................................................... p.30
Conguration of the fan speed...................................................... p.30
Congure Master Slave ..................................................................... p.30
Conguration of the fan speed in free cooling ........................ p.30
Free cooling conguration (yield control).................................. p.31
Glycol water management .............................................................. p.31
VPF management (general parameters)..................................... p.31
VPF management (Bypass 1 parameters)................................... p.31
VPF management (Bypass 2 parameters)................................... p.31
Unit information EVD......................................................................... p.31
Unit information monitor................................................................. p.32
Sets the interface language............................................................. p.32
Conguration of the units of measure ........................................ p.32
Congures the installer menu password.................................... p.32
9. List of alarms...................................................................................... p.33
PEC alarms ............................................................................................. p.34

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 ...);
NB: this menu is password protected. The value to be set for access is:
0000
ASSISTANCE: This menu is not accessible except by authorized sta;
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:
9.5°C
7.0°C
EV CN
Aermec
91
1
C1: C2:
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;
— Status of compressors ON / OFF circuit 1 and circuit 2
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:
18.9bar 31.8°C
6.4bar -2.6°C
14.0°C
75.8°C
CP1: 0s
CP2: 0s
CP3: 0s
AP: Tc:
Circuit 1
BP: Te:
T. Liquid.:
Discharge Temp.
— 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%
50.0%
50.0%
0s
Circuit 1:
Circuit 2:
Total require
Circuits
Time between starts:
— Total thermostat request;
— Power delivered by circuit 1;
— Time between starts between two compressors.

9
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:
---°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
Tot:
Power FC:
— 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 GLYCOL FREE 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
Glycol Free
Total:
Power FC:
— 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 DK UNIT MONITOR
WARNING: this screen is available on units with two separate circuits on
the gas side. (DK)
This screen allows you to view the common temperature of the water leaving the
two evaporators:
10.0 °C
15.0 °C
6.2 °C
DK Unit
Comm.Out.Evap.:
Evap. Out 1:
Evap. Out 2:
— Evap.out 1: Outlet water temperature evaporator 1
— Evap.out 2: Outlet water temperature evaporator 2

10
2.9 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:
15.1°C
15.1°C
0%
O unit
Total Recovery
Inlet water:
Out Total Rec.:
Total require:
— 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);
2.10 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.

11
3 INPUT/OUTPUT MENU
3.1 FAN MONITOR
This window summarises the status of the fans and the utilised setpoints:if the unit
has multiple circuits, each will have a dedicated window:
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 status of defrosting on the
unit:if the unit has multiple circuits, each will have a dedicated window:
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;
— First defrost: shows the rst defrost phase after a power loss;
The second row can have the following states:
— High outside temperature: the air temperature is above the defrosting enabling
threshold;
— Circuit o: all the compressors of the circuit are o; defrost is disabled;
— 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;
— Start CP: compressor just started, wait for defrosting bypass time;
— New LP reference: a new low pressure value has been taken as reference for the
calculation of decreasing pressure;
— Start for LP limit: start of the defrosting due to exceeding the low pressure limit
threshold;
— Start for Delta P: start of defrost to overcome the decreasing value of low pres-
sure;
— 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;
— Waiting for another circuit: it is the phase in which the circuit that ends the de-
frost rst turns o waiting for the other circuit to end (in the case of a Bicircuit);
— Bypass rst start: the rst defrost after a power loss can only occur after the
compressor has run for the determined time;
— Liquid Temp. low:the liquid temperature below the threshold determines the
end of the defrost;
— 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;

12
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;
3.5 I/O MONITOR
The status of the available inputs and outputs will be shown on the display, divid-
ed into successive pages;the following paragraphs will contain the tables with the
various analogue and digital inputs and outputs (in the order in which they will be
listed on the display of the unit) available on the software;
The order in which the masks will be available will be as follows:
— Analogue inputs;
— Digital inputs;
— Digital outputs;
— Analogue outputs;
— Analogue inputs (PEC);
— Digital output (PEC);
— Analogue Inputs (EVD);
— Analogue Inputs (pCOE - free cooling models)
— Digital Inputs (pCOE - free cooling models)
— Digital outputs (pCOE - free cooling models)
— Analogue Inputs (pCOE - glycolfree models)
— Digital Inputs (pCOE - glycolfree models)
— Digital outputs (pCOE - glycolfree models)
— Analogue Inputs (pCOE - models with total recovery)
— Digital Inputs (pCOE - models with total recovery)
— Digital outputs (pCOE - models with total recovery)
— Analogue Inputs (pCOE - DK);
— Analogue Inputs (pCOE - Variable ow rate / Supplementary heater);
— Digital outputs (pCOE - Variable ow rate / Supplementary heater);
— Digital Inputs (pCOE - Variable ow rate / Supplementary heater);
— Analogue Inputs (pCOE - NRG Large);
— Digital inputs (pCOE - NRG Large);
— Digital outputs (pCOE - NRG Large);
NB: the displays may or may not be present (or change) depending on the model
of the unit;

13
3.6 ANALOGUE INPUTS
Analogue input Code Description Note
U1 SIW evaporator water inlet probe ---
U2 SUW evaporator water outlet probe ---
U3 SAE External air sensor
Cold Single circuit/Dual circuit
Free cooling/Glycolfree Single circuit/Dual circuit
Recovery Single circuit/Dual circuit
Fan Series Fan Alarm Contacts Series Heat pump Single circuit/Dual circuit
U4 SGP1A Compressor 1 Circuit 1 discharge gas probe
Cold Single circuit/Dual circuit
Free cooling/Glycolfree Single circuit/Dual circuit
Recovery Single circuit/Dual circuit
--- Heat pump Single circuit/Dual circuit
U5 TAP1 High pressure, Circuit 1 transducer
Cold Single circuit/Dual circuit
Free cooling/Glycolfree Single circuit/Dual circuit
Recovery Single circuit/Dual circuit
--- Heat pump Single circuit/Dual circuit
U6
SGP1B Compressor 2 Circuit 1 discharge gas probe
Cold Single circuit/Dual circuit
Free cooling/Glycolfree Dual circuit
Recovery Single circuit/Dual circuit
--- Free cooling/Glycolfree Single circuit
Heat pump Single circuit/Dual circuit
U7
SL Liquid probe Cold Single circuit,
Recovery Single circuit
SGP2A Compressor 1 Circuit 2 discharge gas probe
Cold dual circuit
Free cooling/Glycolfree Single circuit/Dual circuit
Recovery Dual circuit
--- Heat pump Single circuit/Dual circuit
U8
TAP2 High pressure, Circuit 2 transducer
Cold dual circuit
Free cooling/Glycolfree Single circuit/Dual circuit
Recovery Dual circuit
SL1B1 Circuit 1 Coil Liquid Probe Heat pump single circuit
---
Cold Single circuit
Recovery Single circuit
Heat pump dual circuit
U9
SGP2B Compressor 2 Circuit 2 discharge gas probe
Cooling only dual circuit
Free cooling/Glycolfree Dual circuit
Recovery Dual circuit
SL1B2 Circuit 2 Coil Liquid Probe Heat pump single circuit
---
Cold Single circuit
Free cooling/Glycolfree Single circuit
Recovery Single circuit
Heat pump dual circuit
U10 MULTI IN
Multi-function input
Common outlet probe Common output with Master/Slave 

14
3.7 DIGITAL INPUTS
Digital Input Code Description Note
ID1 FL Flow switch ---
ID2 AP1 Circuit 1 high pressure pressure switch / Circ.1 discharge gas
thermostat ---
ID3 QMF1 Thermomagnetic fan switch ---
ID4 RCS Phase monitor ---
ID5 QM11 Compressor 1 circuit 1 thermomagnetic switch ---
ID6 QM21 Compressor 2 circuit 1 thermomagnetic switch
Cooling only Single circuit/Dual circuit
Free cooling/Glycolfree Dual circuit
Recovery Single circuit/Dual circuit
Heat pump Single circuit/Dual circuit
--- --- Free cooling/Glycolfree Single circuit
ID7 BP1 Circuit 1 low pressure pressure switch ---
ID8
AP2 Circuit 2 high pressure pressure switch / Circ.2 discharge gas
thermostat
Cooling only dual circuit
Free cooling/Glycolfree Single circuit/Dual circuit
Recovery Dual circuit
Heat pump dual circuit
--- ---
Cooling only Single circuit
Recovery Single circuit
Heat pump single circuit
ID9 LD1 Leak detector ---
ID10 2° SET Second setpoint ---
ID11
QM12 Compressor 1 circuit 2 thermomagnetic switch
Cooling only dual circuit
Free cooling/Glycolfree Single circuit/Dual circuit
Recovery Dual circuit
Heat pump dual circuit
--- ---
Cooling only Single circuit
Recovery Single circuit
Heat pump single circuit
ID12
QM22 Compressor 2 circuit 2 thermomagnetic switch
Cooling only dual circuit
Free cooling/Glycolfree Dual circuit
Recovery Dual circuit
Heat pump dual circuit
--- ---
Cooling only Single circuit
Free cooling/Glycolfree Single circuit
Recovery Single circuit
Heat pump single circuit
ID13
BP2 Circuit 2 low pressure pressure switch
Cooling only dual circuit
Free cooling/Glycolfree Single circuit/Dual circuit
Recovery Dual circuit
Heat pump dual circuit
--- ---
Cooling only Single circuit
Recovery Single circuit
Heat pump single circuit
ID14 QMT1 Pump 1 thermomagnetic switch ---
ID15 QMT2 Pump 2 thermomagnetic switch ---
ID16 TV Fans thermal switch series In NRG Large it will refer to Circuit 1 (TV1)
ID17 0/1 Remote ON/OFF contact (closed = ON) ---
ID18 EMF Multifunction input enabling ---
The possible status for each digital input or output can be:
— OPEN: load not active;
— CLOSED: load active;

15
3.8 DIGITAL OUTPUTS
DIGITAL outputs Code Description Note
NO1 MPE1 Pump 1 evaporator ---
NO2 CP1A Compressor 1 Circuit 1
Cooling only Single circuit/Dual circuit
Free cooling/Glycolfree Single circuit/Dual circuit
Recovery Single circuit/Dual circuit
--- --- Heat pump Single circuit/Dual circuit
NO3
CP1B Compressor 2 Circuit 1
Cooling only Single circuit/Dual circuit
Free cooling/Glycolfree Dual circuit
Recovery Single circuit/Dual circuit
--- --- Free cooling/Glycolfree Single circuit
HEAT PUMP
NO4 CP1C Compressor 3 Circuit 1 NRG Large Cool Only / Total Recovery
--- NRG Small
NO5 VR1C1 Circ.1 Rec. bleed-o NRG LargeTotal Recovery
--- NRG Small and Large
NO6 VB1C1 Circ.1 Cond. bleed-o NRG LargeTotal Recovery
--- NRG Small and Large
NO7 MV1 Ventilation group (For NRG Large it concerns Circuit 1)
NO8 AE Alarm summary ---
NO9
CP2A Compressor 1 Circuit 2
Cooling only dual circuit
Only Free cooling/Glycolfree Single circuit/Dual circuit
Recovery Dual circuit
--- --- Cold Single circuit
Recovery Single circuit
RS1 Resistance 1 Coil NRG-Small Heat pump
NO10
CP2B Compressor 2 Circuit 2
Cooling only dual circuit
Free cooling/Glycolfree Dual circuit
Recovery Dual circuit
--- ---
Cold Single circuit
Free cooling/Glycolfree Single circuit
Recovery Single circuit
RS2 Resistance 2 Coil NRG-Small Heat pump
NO11
CP2C Compressor 3 Circuit 2 NRG Large Cooling only/Recovery
CPOR Recovery external pump Recovery Single circuit/Dual circuit
--- ---
Cold Single circuit/Dual circuit
Free cooling/Glycolfree Single circuit/Dual circuit
HEAT PUMP
NO12
VRT1 Recovery 3-way valve Recovery Single circuit/Dual circuit
--- ---
Cold Single circuit/Dual circuit
Free cooling/Glycolfree Single circuit/Dual circuit
HEAT PUMP
NO13
MVP
Periodic ventilation NRG Large
VR1C1 Circ.1 Rec. bleed-o Recovery Single circuit/Dual circuit
--- ---
Cold Single circuit/Dual circuit
Free cooling/Glycolfree Single circuit/Dual circuit
HEAT PUMP
NO14
VB1C1 Circ.1 Cond. bleed-o Recovery Single circuit/Dual circuit
CPOR Recovery external pump NRG Large Recovery
--- ---
Cold Single circuit/Dual circuit
Free cooling/Glycolfree Single circuit/Dual circuit
HEAT PUMP
NO15
VSL1A Oil bleed-o valve from Circuit 1 Recovery Recovery Single circuit/Dual circuit
VRT1 Recovery 3-way valve NRG Large Recovery
--- ---
Cold Single circuit/Dual circuit
Free cooling/Glycolfree Single circuit/Dual circuit
HEAT PUMP
NO16
RRT Rec. heat exchanger heater Recovery Single circuit/Dual circuit
--- --- Cold Single circuit/Dual circuit
Free cooling/Glycolfree Single circuit/Dual circuit
ALF Flow switch alarm HEAT PUMP
NO17 RE Heater exchanger ---
NO18 MPE2 Pump 2 evaporator ---
The possible status for each digital input or output can be:
— OPEN: load not active;
— CLOSED: load active;

16
3.9 ANALOGUE OUTPUTS
ANALOGUE outputs Code Description Note
Y1 FAN1 Modulating fans unit 1 ---
Y2 FAN2 Modulating fans unit 2 NRG Large
Y3 FAN3 Modulating fans unit 3 NRG Large
Y4 --- --- ---
Y5 --- --- ---
Y6 RB Tray heater
Cold Single circuit
Free cooling/Glycolfree Single circuit
Recovery Single circuit
Heat pump single circuit
3.10 ANALOGUE INPUTS PEC
Analogue Input (PEC) Code Description Note
P1 TBP1 Low pressure transducer (circuit 1) Sanhua 4÷20mA
Single circuit/Dual circuit
P2 TAP1 High pressure transducer (circuit 1) Sanhua 4÷20mA
Single circuit/Dual circuit
T1 --- --- ---
T2 SGA1 Intake temperature probe (circuit 1) Shibaura NTC 10K L=3m
Single circuit/Dual circuit
T3 SAE External air sensor Shibaura NTC 10K L=3m
Single circuit/Dual circuit
T4 SL1 Liquid temperature probe (circuit 1) Shibaura NTC 10K L=3m
Single circuit/Dual circuit
T5 SGP1A Compressor 1 Circuit 1 discharge gas probe Shibaura NTC 10K L=4m
Single circuit/Dual circuit
T6 SGP1B Compressor 2 Circuit 1 discharge gas probe Shibaura NTC 10K L=4m
DOUBLE CIRCUIT
T7 SGP1C Compressor 3 Circuit 1 discharge gas probe
(NRG Large) Shibaura NTC 10K L=4m
P3 TBP2 Circuit 2 Low pressure transducer Sanhua 4÷20mA
DOUBLE CIRCUIT
P4 TAP2 High pressure, Circuit 2 transducer Sanhua 4÷20mA
DOUBLE CIRCUIT
T9 SGA2 Circuit 2 Intake temperature probe Shibaura NTC 10K L=3m
DOUBLE CIRCUIT
T10 SL1 Circuit 2 Liquid temperature probe Shibaura NTC 10K L=3m
DOUBLE CIRCUIT
T11 SGP2A Compressor 1 Circuit 2 discharge gas probe Shibaura NTC 10K L=4m
DOUBLE CIRCUIT
T12 SGP2B Compressor 2 Circuit 2 discharge gas probe Shibaura NTC 10K L=4m
DOUBLE CIRCUIT
T13 SGP2C Compressor 3 Circuit 2 discharge gas probe
(NRG Large) Shibaura NTC 10K L=4m
3.11 DIGITAL OUTPUT PEC
Digital output (PEC) Code Description Note
NO1 VIC1 Circuit 1 reverse cycle valve Single circuit/Dual circuit
NO2 CP1A Compressor 1 Circuit 1 Single circuit/Dual circuit
NO3 CP1B Compressor 2 Circuit 1 Single circuit/Dual circuit
NO4 CP1C Compressor 3 Circuit 1 NRG Large
NO5 VIC2 Circuit 2 reverse cycle valve DOUBLE CIRCUIT
NO6 CP2A Compressor 1 Circuit 2 DOUBLE CIRCUIT
NO7 CP2B Compressor 2 Circuit 2 DOUBLE CIRCUIT
NO8 CP2C Compressor 3 Circuit 2 NRG Large
The possible status for each digital input or output can be:
— OPEN: load not active;
— CLOSED: load active;

17
3.12 ANALOGUE INPUTS EVD
Analogue Inputs (EVD) Code Description Note
S1 TBP1 Circuit 1 Low pressure transducer
Cold single circuit/dual circuit
Free cooling/Glycolfree Single circuit/Dual circuit
Recovery Single circuit/Dual circuit
S2 SGA1 Circ. 1 intake temperature probe
Cold single circuit/dual circuit
Free cooling/Glycolfree Single circuit/Dual circuit
Recovery Single circuit/Dual circuit
S3 TBP2 Circuit 2 Low pressure transducer
Cold dual circuit
Free cooling/Glycolfree Single circuit/Dual circuit
Recovery Dual circuit
S4 SGA2 Circ. 2 intake temperature probe
Cold dual circuit
Free cooling/Glycolfree Single circuit/Dual circuit
Recovery Dual circuit
3.13 ANALOGUE INPUTS PCOE FREE COOLING MODELS
Analogue Inputs (pCOE) Code Description Note
B1 SFC Free cooling inlet probe Single circuit/Dual circuit
B2 --- --- ---
B3 --- --- ---
B4 --- --- ---
3.14 DIGITAL OUTPUTS PCOE FREE COOLING MODELS
Digital outputs (pCOE) Code Description Note
NO1 V3V Free cooling 3-way valve Single circuit/Dual circuit
NO2 --- --- ---
NO3 --- --- ---
NO4 --- --- ---
The possible status for each digital input or output can be:
— OPEN: load not active;
— CLOSED: load active;
3.15 ANALOGUE INPUTS PCOE  GLYCOLFREE MODELS
Analogue Inputs (pCOE) Code Description Note
B1 SFC Free cooling inlet probe ---
B2 SFC2 Free cooling outlet probe ---
B3 SRU Intermediate evaporator probe ---
B4 --- --- ---
3.16 DIGITAL INPUTS PCOE  GLYCOLFREE MODELS
Digital inputs (pCOE) Code Description Note
ID1 RS2 Flow switch Glycol Free side ---
ID2 MTP Glycol Free pump thermal ---
ID3 --- --- ---
ID4 --- --- ---
The possible status for each digital input or output can be:
— OPEN: load not active;
— CLOSED: load active;
3.17 DIGITAL OUTPUTS PCOE  GLYCOLFREE MODELS
Digital outputs (pCOE) Code Description Note
NO1 MPC Glycol Free Side pump ---
NO2 RS2 Glycol Free Side Heater ---
NO3 --- --- ---
NO4 --- --- ---
The possible status for each digital input or output can be:
— OPEN: load not active;
— CLOSED: load active;
3.18 ANALOGUE INPUTS PCOE MODELS WITHTOTAL RECOVERY
Analogue Inputs (pCOE) Code Description Note
B1 SIR Recovery inlet probe ---
B2 SUR Recovery outlet probe In NRG Large it will refer to Circuit 1
B3 SUR2 Recovery Outlet Probe Circuit 2 NRG Large
B4 --- --- ---

18
3.19 DIGITAL INPUTS PCOE MODELS WITH TOTAL RECOVERY
Digital inputs (pCOE) Code Description Note
NO1 FLR Recovery ow switch ---
NO2 TPR Recovery external pump thermal switch ---
NO3 --- --- ---
NO4 --- --- ---
The possible status for each digital input or output can be:
— OPEN: load not active;
— CLOSED: load active;
3.20 DIGITAL OUTPUTS PCOE MODELS WITH TOTAL RECOVERY
Digital inputs (pCOE) Code Description Note
NO1 VR1C2 Circ.2 Rec. bleed-o Recovery Dual circuit
---
Recovery Single circuit
NO2 VB1C2 Circ.2 Cond. bleed-o Recovery Dual circuit
---
Recovery Single circuit
NO3 VRT2 Recovery 3-way valve Circuit 2 Recovery Dual circuit
---
Recovery Single circuit
NO4 VSL2A Oil bleed-o valve from Circuit 2 Recovery Recovery Dual circuit
---
Recovery Single circuit
The possible status for each digital input or output can be:
— OPEN: load not active;
— CLOSED: load active;
3.21 ANALOGUE INPUTS PCOE  DK
Analogue inputs Code Description Note
B1 SUW2 Probe Water outlet temperature according
to evap. Single circuit/Dual circuit
B2 SUC Probe water outlet common evap. Single circuit/Dual circuit
B3 --
B4 --

3.22 ANALOGUE INPUTS PCOE  VARIABLE FLOW RATE / SUPPLEMENTARY HEATER
Analogue inputs Code Description Note
B1 VPF Dierential Transducer Only for Variable Flow Rate
B2 -- --
B3 SAC Storage Tank Probe Only for Supplementary Heater
B4 -- --

3.23 DIGITAL OUTPUTS PCOE  VARIABLE FLOW RATE / SUPPLEMENTARY HEATER;
DIGITAL outputs Code Description Note
NO1 Rest.1 Integral Resistance 1 / Boiler in Replacement Only for Supplementary Heater
NO2 Rest.2/3 Integr.resist. 2 / Integr.resist. 3 Only for Supplementary Heater
NO3 --
NO4 --

The possible status for each digital input or output can be:
— OPEN: load not active;
— CLOSED: load active;

19
3.24 DIGITAL INPUTS PCOE  VARIABLE FLOW RATE / SUPPLEMENTARY HEATER;
Digital inputs Code Description Note
Y1 VPF3V 3 Way Valve Only for Variable Flow Rate
The possible status for each digital input or output can be:
— OPEN: load not active;
— CLOSED: load active;
3.25 ANALOGUE INPUTS PCOE  NRG LARGE;
Analogue inputs Code Description Note
B1 SL1 Circuit 1 Liquid Probe NRG Large Cooling only
--- NRG Large Heat pump
B2 SL2 Circuit 2 Liquid Probe NRG Large Cooling only
--- NRG Large Heat pump
B3 SGP1C Compressor 3 Circuit 1 discharge gas probe NRG Large Cooling only
--- NRG Large Heat pump
B4 SGP2C Compressor 3 Circuit 2 discharge gas probe NRG Large Cooling only
--- NRG Large Heat pump
3.26 DIGITAL INPUTS PCOE  NRG LARGE;
Digital inputs Code Description Note
ID1 QMF2 Circuit 2 Thermomagnetic fan switch NRG Large
ID2 TV2 Circuit 2 fan thermal series NRG Large
ID3 QM31 Compressor 3 circuit 1 thermomagnetic
switch NRG Large
ID4 QM32 Compressor 3 circuit 2 thermomagnetic
switch NRG Large
The possible status for each digital input or output can be:
— OPEN: load not active;
— CLOSED: load active;
3.27 DIGITAL OUTPUTS PCOE  NRG LARGE;
DIGITAL outputs Code Description Note
NO1 VIC1 Cycle Reversing valve Circ. 1 NRG Large Recovery
--- --- NRG Large Cooling only/Heat pump
NO2 VIC2 Cycle Reversing valve Circ. 2 NRG Large Recovery
--- --- NRG Large Cooling only/Heat pump
NO3 -- ---
NO4 -- ---

The possible status for each digital input or output can be:
— OPEN: load not active;
— CLOSED: load active;

20
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.

21
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.