AERMEC PCO5 User manual

22/06 – 4724311_02
Translation of Original instructions
www.aermec.com
User manual
Multipurpose
 CARD PCO5  PANEL PGD1

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ronment or human health from uncontrolled disposal of Waste Electrical and Electronic Equipment (WEEE), please return the device using appropriate
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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.5
Start-up procedure................................................................................p.5
Function of the PGD1 control panel keys......................................p.5
Menu structure........................................................................................p.6
Assistance Menu (protected by password)...................................p.6
User operating procedures.................................................................p.7
2. Main display ..........................................................................................p.8
Description of the status in which the circuit can be
found ..........................................................................................................p.8
3. 2-pipe system ......................................................................................p.9
Information on system side heat exchanger................................p.9
Information on DHW side heat exchanger...................................p.9
Information on DHW storage.............................................................p.9
Information on circuits 1 - 2 ...............................................................p.9
4. 4-pipe system ................................................................................... p.10
Information on cooling side heat exchanger............................ p.10
Information on heating side heat exchanger ........................... p.10
Information on circuits 1 - 2 ............................................................ p.10
5. Input/output menu........................................................................ p.11
Information regarding external temperature........................... p.11
Information on circuit status and capacity................................ p.11
Information on status of fans (NRP).............................................. p.11
Informations about geothermal pump’s conditions (NXP)
................................................................................................................... p.11
Information on defrosting status (NRP)...................................... p.12
Indicates the status of the circuit 1 and circuit 2 valves........ p.12
Inputs/outputs list - pCO board..................................................... p.13
Inputs/outputs list - µPC board...................................................... p.14
6. ON/OFF menu................................................................................... p.15
Unit switch-on/o and settings on the functioning mode
(2 pipes) .................................................................................................. p.15
Unit switch-on/o and settings on the functioning mode
(4 pipes) .................................................................................................. p.15
7. System menu (2 pipes)................................................................. p.15
Visualisation of current chiller settings ....................................... p.15
System set-point display 1............................................................... p.15
System set-point display 2............................................................... p.15
Enabling: BY CLOCK............................................................................ p.16
Mode Selection: BY CALENDAR ..................................................... p.16
Mode Selection: EXTERNAL TEMPERATURE............................... p.16
8. Recovery menu (2 pipes) ............................................................ p.17
Recovery set-point display............................................................... p.17
9. Cool menu (4 pipes)....................................................................... p.17
Display of cooling side heat exchanger set-point 1 ............... p.17
Display of cooling side heat exchanger set-point 2 ............... p.17
10. Heat menu (4 pipes) ...................................................................... p.18
Display of heating side set-point................................................... p.18
11. Clock menu......................................................................................... p.19
System time and date settings....................................................... p.19
Daylight saving time settings......................................................... p.19
Setting the calendar function......................................................... p.19
12. Alarm Menu........................................................................................ p.20
Alarm history ........................................................................................ p.20
13. List of alarms...................................................................................... p.21

5
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.
ATTENTION: The 2-pipe units is set up for the production of cooled wa-
ter, hot water and Domestic Hot Water (D.H.W.); No Anti-legionella Cycle
is included. The 4-pipe units is set up for the production of cooled water
and hot water.
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:
6sWait please
This window indicates the seconds remaining until the software loaded in the unit
starts up (switching to the system language selection);
20
Language:
Language:
Push ENTER for change
ESC to conrm
ENGLISH
Time show mask:
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 and historical alarms (red LED on = active alarm);
: Press this key to enable navigation between the menus (xed orange LED =
winter operating mode active on system for 2-pipe+DHW machines);
For units with a 4-pipe system, the orange LED does not light up.
: 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;

6
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 availa-
ble 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.
Menu icons:
Icon Menu Menu function
IN/OUT Contains the information (temperature, pressure,
etc.) of the system components.
ON/OFF
Switches the unit on and o and sets its
functioning mode (summer/winter) and eventual
time periods.
2-PIPE VERSION
Plant Management of the chiller parameters, standard/
energy saving work set-point.
Recovery DHW management parameters(set-point, consent,
temperature, time periods, etc...).
4-PIPE VERSION
COLD
Management of the chiller parameters, standard/
energy saving work set-point when functioning in
cooling mode.
Icon Menu Menu function
HOT
Management of the chiller parameters, standard/
energy saving work set-point when functioning in
heating mode.
Icon Menu Menu function
Clock Manages all parameters linked to the system time
(hour, date, etc....).
Help menu (PROTECTED
menu)
Protects the after-sales assistance menu with
password request.
Manufacturer menu
(PROTECTED menu)
Protects the manufacturer menu with password
request.
ASSISTANCE MENU PROTECTED BY PASSWORD
Table of
contents Icon Menu Menu function
ALANGUAGE Selecting the user interface language
BINFO Information regarding the software
C
2 pipe
Assistance parameters for the chiller
CHILLER
4 PIPES
Assistance parameters in cooling mode
COLD
D
2 pipe
Assistance parameters for the DHW
RECOVERY
4 PIPES
Assistance parameters in heating mode
HOT
E
VENTILAT. Ventilation assistance parameters
GEOTHERMAL
SIDE Service parameters of geothermal pump
FPUMPS Pumps assistance parameters
GHOUR METER Devices working hours timer
HMANUAL Manual controls forcing
IACCESSORIES Enabling of accessories modules
LC.SYSTEM Denition of system features
MMISCELLANEO Setting assistance parameters
NIN/OUT Input and output states
Parameters can be modied by authorised personnel alone

7
1.5 USER OPERATING PROCEDURES
To check or modify the operating parameters of the unit it is necessary to use the
interface of the control panel on the unit.
The basic operations that the user must be capable of, for the correct use of the
unit, are:
— Moving between menus;
— Selecting and modifying a menu.
Moving between menus
To move between the menus, the order in which they are displayed is shown in the
previous page, enter the menu selection mode by pressing the key ;
Once in the menu selection mode it is possible to move between menus using the
arrow keys: the key to move to the previous menu, and the key to move
to the next menu:
When the desired menu is seen press the key to enter the menu. Press the key
to return to the menu selection mode:
Selecting and modifying a menu
Once in the menu selected, by following the procedure, it is possible to move be-
tween the screens using the arrow keys: the key to move to the previous pa-
rameter, and the key to move to the next parameter:
When the desired parameter is seen press the key to enter the parameter. To
exit the parameter and return to the parameter selection mode press the key .
WARNING: Once a parameter is selected by pressing the key , the pa-
rameter selection mode is automatically accessed.
In this mode the desired parameter values can be set with the following procedure:
1. Pressing the key causes a ashing cursor to appear on the rst modiable
eld of the parameter. If no modiable elds are displayed then the cursor will
not appear.
2. Pressing the key or the key , the value of the eld can be increased
or decreased;
3. Pressing the key conrms the modication of the eld value, saving it in
memory.
Note: On the basis of the type of parameter selected the number of modiable elds
can change.

8
2 MAIN DISPLAY
This mask is used to display the unit's general status:
E- C R -E
15.0 °c
CH+R CH+R
40.2 °c
c40.1°c19.3
Aermec
°
Tue 14:29
Icons:
Icon Meaning
EV CN
Indicates water inlet and outlet temperature (evaporator in summer
and condenser in winter)
RE
Indicates water inlet and outlet temperature of DHW side heat
exchanger (recovery).
Indicates the percentage of water requested by the machine
intended for the system or for recovery.
P
1 2
Indicates which pump is running. The icon on the left refers to the
pump on the system side, on the right to the heat recovery pump.
The number below shows which pump is on
NRP Indicates that the anti-freeze resistance is active
NXP Option not present
Indicates that the ow switch is open. The compressors are turned
o and the pumps release the ow switch.
Indicates that low output temperature anti-freeze prevention is
active (turns o the compressors).
H
Indicates that the outlet high temperature prevention is active.
Switches the compressors/mode change o.
12
3 4
Indicates compressor status: disabled(1), o (2), on (3), in alarm (4).
Description of the status in which the circuit can be found:
State Meaning
C1 C2 The system is active and running
CH Chiller operation
CH + R Chiller + total recovery functioning
PC Heat pump functioning
REC Total recovery
DEFR Defrost active
WAIT The circuit is in standby because conguration is changing
LC Low load: Indicates low water content or low thermal load
OK Set point achieved
2.1 DESCRIPTION OF THE STATUS IN WHICH THE CIRCUIT
CAN BE FOUND
NRP 2-PIPE SYSTEM:
On/O Unit u 3
Plan t sideEnable d
R e c o v e r y side
Enable d
Gen e r al e nable : Y E S
NRP 4-PIPE SYSTEM:
On/O Unit u 3
Cold side Enable d
Heat side
Enable d
Gen e r al e nable : Y E S
State Meaning
Enabled The system is active and running
O by alarm There is a serious alarm which stops the system
(check the list of alarms, below the alarm key)
General O The system is switched o by the terminal; check
the On/O screen
O by supervisor (BMS) The supervision system has prevented unit start-up
O by clock The set time bands switch o the whole system
O by digital input The digital input (ID8) is closed, so the system
switches o
O by display System turned o by terminal. Control system
screen
O by Plant-side NRP Plant-side disable: Recovery side not working
NXP Option not present
Anti-freeze NRP Action to prevent ice formation in the water heat
exchangers
NXP Option not present
Manual Mode The compressors or pumps are forced to manually
ATTENTION:
— NRP 2-pipe system - Deactivated system /O: also the recovery side is ex-
cluded
— NRP 4-pipe system - Deactivated Cool Side /O: also the heating side is ex-
cluded
Function not present

9
If a function is not present the folowing screen will be shown:
Attention
Function
not present
To return to the main screen press ESC.
3 2PIPE SYSTEM
3.1 INFORMATION ON SYSTEM SIDE HEAT EXCHANGER
7.0°C
8.5%
9.0%
2.9%
30%
39%
Plant side
S e t poin t
Di. 5.0°C
Temp.Outlet:
Ep Ei
Req. Active
From this window it is possible to view the information relating to the heat ex-
changer on the system side:
— Current work set-point
— Evaporator inlet temperature
— Indicates the heat drop value
— Temperature at which machine is adjusted
— Percentage of proportional factor (if activated PID)
— Percentage of integral factor (if activated PID)
— Percentage requested by system
— The actual power percentage used
3.2 INFORMATION ON DHW SIDE HEAT EXCHANGER
45.0°C
8.5%
2.9%
39%
Recovery side
S e t poin t
Di. 5.0°C
Temp.Outlet:
Req. Active
From this window it is possible to view the information relating to the heat ex-
changer on the DHW side
— Current work set-point
— Heat exchanger outlet temperature
— Indicates the heat drop value
— Temperature at which machine is adjusted
— Percentage requested by system
— The actual power percentage used
3.3 INFORMATION ON DHW STORAGE
42.4°C 10.5°C
45.0°C
5.0°C
64%
58%
Recovery side
Temp.Prod
Set
Di
Req.
Active
Tank.
— Leaving domestic hot water temperature
— Temperature within storage tank
— Indicates domestic hot water demand (in steps of 0 to 10)
— Is shown when the heat recovery pump is on. The number below shows which
pump is on. If heat recovery and domestic hot water is enabled the pump will
start if there is a demand for domestic hot water.
3.4 INFORMATION ON CIRCUITS 1  2
60%
83s
58%
58%
2
1
CH + Rec
Rec
Circuits
Total require
Circuit 1:
Circuit 2:
Next ON
Next O Circ. 1
Circ. 1
— Shows the circuit demand
— Shows the circuit status
— Shows which compressor will start/stop

10
4 4PIPE SYSTEM
4.1 INFORMATION ON COOLING SIDE HEAT EXCHANGER
7.0°C
8.5%
9.0%
2.9%
30%
39%
Cold side
S e t poin t
Di. 5.0°C
Temp.Outlet:
Ep Ei
Req. Active
Cold side
S e t poin t
Di. 5.0°C
Temp.Outlet:
Ep Ei
Req. Active
From this window it is possible to view the information relating to the heat ex-
changer on the system side:
— Current work set-point
— Evaporator inlet temperature
— Indicates the heat drop value
— Temperature at which machine is adjusted
— Percentage of proportional factor (if activated PID)
— Percentage of integral factor (if activated PID)
— Percentage requested by system
— The actual power percentage used
4.2 INFORMATION ON HEATING SIDE HEAT EXCHANGER
50.0°C
8.5%
9.0%
2.9%
30%
39%
Heat side
S e t poin t
Di. 5.0°C
Temp.Outlet:
Ep Ei
Req. Active
Di. 5.0°C
Temp.Outlet:
Ep Ei
Req. Active
From this window it is possible to view the information relating to the heat ex-
changer on the DHW side
— Current work set-point
— Heat exchanger outlet temperature
— Indicates the heat drop value
— Temperature at which machine is adjusted
— Percentage requested by system
— The actual power percentage used
4.3 INFORMATION ON CIRCUITS 1  2
60%
83s
58%
58%
2
1
CH + Rec
Rec
Circuits
Total require
Circuit 1:
Circuit 2:
Next ON
Next O Circ. 1
Circ. 1
— Shows the circuit demand
— Shows the circuit status
— Shows which compressor will start/stop

11
5 INPUT/OUTPUT MENU
5.1 INFORMATION REGARDING EXTERNAL TEMPERATURE
5.7°C
5.7 °C
0.0 °C 5.7 °C 5.7 °C
Outdoor temp.
Today
Yester.
— External temperature: this window displays the data relative to the external
temperature.
— Today: indicates the MIN and MAX temperature recorded during the day.
— Yesterday: indicates the MIN and MAX temperature recorded the previous day.
— External temperature: Indicates the external temperature currently detected
by the outdoor air probe.
5.2 INFORMATION ON CIRCUIT STATUS AND CAPACITY
163s
58%
Circuit 1
Chiller + Rec
Pros.change mode
Req. 58%
Compr.1:
Compr.2:
Active:
— Shows the circuit operating status:
O
Chiller only
Chiller+Rec
Heat pump
Heat recovery only
Await part load
Mode selected
Defrost start
Await inversion VIC
Defrost
Await exit defrost
Turn on fan exit defrost
Exit defrost
No defrost System
No defrost Recovery
— Shows how many seconds until the next change of operation
— Shows the circuit demand
— Shows the compressor status:
: indicates that the compressor is o;
: indicates that the compressor is on;
Min.On: Compressor on and in minimum run timer, right when this will nish;
Min.O: Compressor on and in minimum stop timer, right when this will nish;
O alarm: Compressor o due to alarm, see Alarm key.
— Shows the circuit active capacity
5.3 INFORMATION ON STATUS OF FANS NRP
100 %
Set 12.0 bar
C1 Force 5.0 bar
Force 5.2 bar
C2
Di 5.0 bar
Fan 1
Speed
100 %
C1
C2
Set 12.0 bar
Force 5.0 bar
Chiller + Rec 5.2 bar
Di 5.0 bar
Fan 2
Speed
This window displays the data relative to fan operation:
Ventilation 1: the screen is displayed if the two circuits have the same ventilation
Ventilation 2: the screen is displayed if the two circuits have separate ventilation
— Indicates the speed percentage at which the fan is rotating
— Indicates the current setting
— Indicates the possible statuses of the circuit (see chapter 2Main displayp.8)
— The Max Force mode is activated if the fans are operating in condensation and
the outdoor temperature drops below the set value (assistance/fans menu).
C1 O: Circuit o
C1 Press.Cond: Fans control to high pressure (condensing)
C1 Chiller +Rec: Fans o because unit is operating in water/water mode
C1 Forced to Max: Fans are forced to maximum because the external temperature
is higher than 30°C
C1 Press.Evap: Fans control to low pressure
NRP only unit
5.4 INFORMATIONS ABOUT GEOTHERMAL PUMP’S
CONDITIONS NXP
100 %
C1 25.2
C2
30.7 °C
30.7 °C
Pro.
Evap. Press. HP1
HP2Chiller + Rec
Int
Outdoor side pump
In. Water Geo
Water GeoOut.
— Input and output temperature on geothermal side
— Speed percentage of geothermal pump
— High pressure circuit 1 and circuit 2
— Workings mode C1 and C2
— PRO/INT: Parameters are visible only if PID is selected
NXP only unit

12
5.5 INFORMATION ON DEFROSTING STATUS NRP
O
5.4 bar
5.4 bar
Defrost
Circuit 1 Alarms
Circuit 2 Alarms
O
LP Delta 0.0
Delta 0.0
LP
— Shows the defrost status of circuits 1 and 2
— Shows if the defrost mode is operating
— Shows the circuit operating status:
O
Chiller only
Chiller+Rec
Heat pump
Heat recovery only
Await part load
Mode selected
Defrost start
Await inversion VIC
Defrost
Await exit defrost
Turn on fan exit defrost
Exit defrost
No defrost System
No defrost Recovery
— Shows actual set point value.
The Delta value shows the drop in pressure with time.When this level is reached the
defrost operating cycle is started
NRP only unit
Description of defrosting states:
No SBR: No defrost
O: Circuit o from display panel, or time clock, or digital input
Defr. Activ: Defrost active (the unit condenses in the ventilated coil)
On Smart: Defrost started due to drop
On Min LP: Defrost started due to low pressure reached
On Reboot: Defrost started after power loss
On Force: Defrost started forced from the display panel or forced by another defrost
cycle
On TGP: Defrost started due to high discharge temperature
Defrost stopped due to high liquid temperature
End Time: Defrost stopped after maximum time reached
End Force: Defrost stopped forced from display panel
Startup Cmp: Defrost inhibited due to time after compressor start
High evap p.: Defrosting inhibited owing to high evaporation pressure
High T.Ext: Defrost inhibited due to high external temperature
T.Bw Defr: Defrosting inhibited for the standby time between two defrosting in-
terventions
Alarms: Circuit in alarm
On by Alarm: Defrost started due to return to alarm
5.6 INDICATES THE STATUS OF THE CIRCUIT 1 AND
CIRCUIT 2 VALVES
This window displays the data relative to circuit pressures and valve status:
CH
26.7 bar
2.4 bar
LiqT 40.7°C vic vir
vs1 v1a vsB vsR vsE By
Circuit 1
Fan 88%
HP
LP
CH
26.7 bar
2.4 bar
LiqT 40.7°C vic vir
vs1 v1a vsB vsR vsE By
Circuit 2
Fan 88%
HP
LP
CH
26.7 bar
2.4 bar
LiqT 40.7°C vic vir
vs1 v1a vsB vsR vsE By
Circuit 1
Geo 88%
HP
LP
42.4°C 10.5°C
45.0°C
5.0°C
64%
58%
Heat side
Temp.Prod
Set
Di
Req.
Active
Tank.
— Displays the status of the compressors (disabled - on - o - alarm)
— Indicates the high and low pressure values of the circuit.
— Indicates the refrigerant liquid (Liq T) and pressing gas (Tgp) temperature.
— Indicates the valve status:
VIC - Cycle Reversing Valve
VIR - Recovery Reversing Valve
vs1: liquid intercept. solenoid valve
v1a: liquid intercept. solenoid valve
vsB: battery solenoid valve
vsR: recovery solenoid valve
vsE: evaporator solenoid valve
By: defrost spilling valve
— Indicates speed percentage at which the fan works.
— Indicates the speed (as a percentage) at which the geothermal pump is working

13
5.7 INPUTS/OUTPUTS LIST  PCO BOARD
Digital outputs Range Master
NO1 CP1(compressor) circuit 1 (CC1)
NO2 CP2 (compressor) circuit 1 (CC1A)
NO3 CP1 (compressor) circuit 2 (CC2)
NO4 CP2 (compressor) circuit 2 (CC2A)
NO5 VS1 (liquid interception solenoid valve) circuit 1
NO6 VS2 (liquid interception solenoid valve) circuit 1
NO7 (exchange) Pump 1 evaporator
NO8 Serious alarm
NO9 Pump 2 evaporator
NO10 NRP Condenser fan 1
NO10 NXP Geothermal pump
NO11 Condenser fan 2
NO12 VIC1 (cycle reversing valve)
NO13 VIR1 (recovery reversing valve)
NO14 VIC2 (cycle reversing valve)
NO15 VIR2 (recovery reversing valve)
NO16 Anti-freeze resistance
NO17 VS1 (liquid interception solenoid valve) circuit 2
NO18 VS2 (liquid interception solenoid valve) circuit 2
Digital inputs Master
ID1 High pressure circuit 1
ID2 Low pressure circuit 1
ID3 Remote On-O
ID4 Remote heating/cooling
ID5 Evaporator ow switch
ID6 Circuit 1 circuit breaker CP1 (MT1)
ID7 Circuit 1 circuit breaker CP2 (MT1A)
ID8 Phase monitor alarm
ID9 High pressure circuit 2
ID10 Low pressure circuit 2
ID11 Circuit 2 circuit breaker CP1 (MT2)
ID12 Circuit 2 circuit breaker CP2 (MT2A)
ID13 Evaporative pump 1 circuit breaker
ID14 Evaporative pump 2 circuit breaker
ID15 Fan 1 circuit breaker
ID15 Circuit breaker of geothermal pump
ID16 Fan 2 circuit breaker
ID17 Geothermal ow switch
ID18 Multifunction input enabling
Analogue outputs Master
Y1 (0-10V)
Y2 (0-10V) Evaporator modulating pump
Y3 (0-10V) NRP Modulating 1 fan
Y3 (0-10V) NXP Geothermal modulating pump
Y4 (0-10V) Modulating 2 fan
Analogue inputs Master
B1 High pressure circuit 1
B2 Low pressure circuit 1
B3 Evaporator water outlet temperature
B4 Evaporator water inlet temperature
B5 Pressing line gas temperature (PT1000) Circuit1
B6 High pressure circuit 2
B7 Low pressure circuit 2
B8 Multi-function input
B9 External air temperature
B10 Pressing line gas temperature (PT1000) Circuit2

14
5.8 INPUTS/OUTPUTS LIST  ΜPC BOARD
DIGITAL outputs Range Master
NO1 Recovery pump 1
NO2 Recovery pump 2
NO3 CP3 circuit 1 (CC1B)
NO4 CP3 circuit 2 (CC2B)
NO5 VS-R (recovery solenoid valve) circuit 1
NO6 VS-R (recovery solenoid valve) circuit 2
NO7 (exchange) VS-B (battery solenoid valve) circuit 1
NO8 VS-B (battery solenoid valve) circuit 2
NO9 VS-E (evaporator solenoid valve) circuit 1
NO10 VS-E (evaporator solenoid valve) circuit 2
NO11 VBY circuit1
NO12 VBY circuit2
Digital inputs
ID1 Recovery ow switch
ID2 Thermomagnetic switch on pump 1 - recovery
ID3 Thermomagnetic switch on pump 2 - recovery
ID4 Circuit 1 circuit breaker CP3 (MT1B)
ID5 Circuit 2 circuit breaker CP3 (MT2B)
ID6 On/O remote D.H.W. /Hot water
ID7 Qualify according to setpoint D.H.W.
ID8
ID9
ID10
ANALOGUE outputs
Y1 (0-10V)
Y2 (0-10V)
Y3 (0-10V)
Y4 (0-10V)
Analogue inputs
B1 (NTC) Recovery inlet water temperature
B2 (NTC) Recovery 1 outlet water temperature
B3 (NTC) Evaporator common outlet water temperature (Master/Slave)
B4 (NTC) Recovery common outlet water temperature (Master/Slave)
B5 (NTC) DHW storage tank temperature (optional)
B6 (NTC) Recovery 2 outlet water temperature
B7 (NTC) NRP Liquid temperature (defrost end) Circuit 1
B7 (NTC) NXP Geothermal’s input water temperature (end of defrosting) Circuit 1
B8 (NTC)
B9 (NTC; NTC HT;)
B10 (NTC) NRP Liquid temperature (defrost end) Circuit 2
B10 (NTC) NXP Geothermal’s output water temperature
B11 (0-5V)
B12 (0-5V)


15
6 ON/OFF MENU
6.1 UNIT SWITCHON/OFF AND SETTINGS ON THE
FUNCTIONING MODE 2 PIPES
On/O Unit
Plant side O to clock
Recovery side
General enable:
O to clock
YES
— Unit On/O: the data relative to the status of the unit and its functioning mode
are set in this window.
— General ON/O status, enabled by user.
6.2 UNIT SWITCHON/OFF AND SETTINGS ON THE
FUNCTIONING MODE 4 PIPES
On/O Unit
Cold side O for Alarm
Heat side
General enable:
O for Alarm
YES
— Unit On/O: the data relative to the status of the unit and its functioning mode
are set in this window.
— General ON/O status, enabled by user.
7 SYSTEM MENU 2 PIPES
7.1 VISUALISATION OF CURRENT CHILLER SETTINGS
Plant side
OFF to clock
Switch ON:
BY CLOCK
MODE SELECTION:
BY CALENDAR
Displays the current settings of the chiller:
— NO: The system does not produce cold/hot water, recovery is managed sepa-
rately
— Yes: the unit is running and the system is adjusted at the default set-point
— Yes with set2: the unit is running and the system is adjusted at the second
set-point
— By clock: the system is adjusted by the set time periods, when active.
Mode selection:
— BY SUPERV: the unit is managed by remote control via the BMS system.
— BY DIG INPUT: if the digital contact (auxiliary device) closes, the heating mode
is activated
— BY EXT TEMP.: cooling or heating mode is selected depending on the external
temperature
— BY CALENDAR: the unit produces hot water depending on the period set
— HEATING: the unit produces hot water
— COOLING: the unit produces cold water
7.2 SYSTEM SETPOINT DISPLAY 1
7.0°C
45.0°C
Plant side
Setpoint 1
— Displays the current settings of the chiller
— Indicates the cold water production set-point
— Indicates the hot water production set-point
7.3 SYSTEM SETPOINT DISPLAY 2
12.0°C
40.0°C
Plant side
Setpoint 2

16
— Displays set-point 2 (only if enabled)
— Indicates the set-points for production of cold water
— Indicates the set-points for production of hot water
7.4 ENABLING: BY CLOCK
ON
a: 8: 0 12: 0
0 22: 0b:16:
OFF SEL
OFF
ON
Plant side
DAY MONDAY
ON
c: 0: 0 0: 0
0 0: 0d: 0:
OFF SEL
Set2
ON
Plant side
DAY MONDAY
— Indicates the day of the week
— Indicates whether the unit is on or o
— Indicates the time periods of the day and can set unit switch-on and switch-o:
SEL - it is possible to select, for the relative time period, whether to leave the unit
OFF or ON, using the default set-point or the second set-point (Set2)
— Indicates the day with the settings to be copied
Plant side
Time zone
MONDAY
Copy to
DAY
ALL No
— Indicates the day where the settings must be copied.
— The settings may be copied on a single day or on all days:
No = disables the day setting copy function
Yes = enables the day setting copy function
Each program has 8 days and each day has four time periods at which the switch-on
and switch-o time, set point 2 or switch-on/switch-o can be set.
Outside these 4 time periods the program will switch the system o:
00:00
ON (set 1) ON (set 1)Set 2 Set 2
a-On a-O
24:00
b-On b-O c-On c-O d-On d-O
7.5 MODE SELECTION: BY CALENDAR
0/---
0/---
Cooling/Heating
Select Cool/Heat with
Calendar
Start Cooling
Finish Cooling
— Sets the starting date of the period at which the heating unit can be activated.
— Sets the nal date of the period at which the heating unit can be deactivated.
7.6 MODE SELECTION: EXTERNAL TEMPERATURE
26°C
07.0°C
Cooling/Heating
Select Cool/Heat with
External Temperature
Set ON Heating
Set ON Cooling
— Sets the external temperature at which the unit must be activated in cooling
mode
— Sets the external temperature at which the unit must be activated in heating
mode

17
8 RECOVERY MENU 2 PIPES
WARNING: The NRP - 2-pipe unit è is set up for production of Domestic Hot
Water (D.H.W.). No Anti-legionella Cycle is included.
8.1 RECOVERY SETPOINT DISPLAY
Recovery side
O to clock
External temperature
Enable:
YES
Displays the current settings of the heat exchanger.
YES: the unit does not produce hot water for DHW use
NO: the unit is running and the system is adjusted at the default set-point.
BY CLOCK: the system is adjusted by the set time periods, when active.
Yes with set2: the unit is running and the system is adjusted at the second set-
point.
45. 0 ° C
45. 0 ° C
Recovery side
Setpoint 1:
Setpoint 2:
— Displays the current settings of the chiller
— Displays the heat exchanger outlet water temperature at the default set-point
— Displays the heat exchanger outlet water temperature at the second set-point
9 COOL MENU 4 PIPES
Cold side
OFF to clock
Enable:
BY CLOCK
NO: the system does not produce cold/hot water
Yes: the unit is running and the system is adjusted at the default set-point
Yes with set2: the unit is running and the system is adjusted at the second set-
point
BY CLOCK: the system is adjusted by the set time periods, when active.
9.1 DISPLAY OF COOLING SIDE HEAT EXCHANGER SET
POINT 1
7 . 0 ° C
Cold side
Setpoint 1
— Displays the current settings of the chiller
— Indicates that the system default set-point is active
— Indicates the cooling set-point temperature
9.2 DISPLAY OF COOLING SIDE HEAT EXCHANGER SET
POINT 2
12. 0 ° C
Cold side
Setpoint 2
— Displays set-point 1 and set-point 2 (only if enabled)
— Indicates the set-points for production of cold water
— Indicates the set-points for production of hot water
WARNING: To set the time periods, see the chapter 7.4 Enabling: BY
CLOCKp.16

18
10 HEAT MENU 4 PIPES
ATTENTION: The NRP 4-pipe unit is set up for production of Domestic Hot
Water (D.H.W.).
Heat side
O to clock
External temperature
Enable:
YES
NO: the unit does not produce hot water on system side
YES: the unit is running and the system is adjusted at the default set-point.
BY CLOCK: the system is adjusted by the set time periods, when active.
Yes with set2: the unit is running and the system is adjusted at the second set-
point.
10.1 DISPLAY OF HEATING SIDE SETPOINT
45. 0 ° C
45. 0 ° C
Setpoint 1:
Setpoint 2:
Heat side
— Displays the current settings of the chiller
— Displays the heat exchanger outlet water temperature at the default set-point
— Displays the heat exchanger outlet water temperature at the second set-point

19
11 CLOCK MENU
11.1 SYSTEM TIME AND DATE SETTINGS
Clock
Day: Tuesday
Time: 3 May 2011
14:04Hour:
— Displays the day of the week (it cannot be changed from this window).
— The date of the system can be modied
— The time of the system can be modied
11.2 DAYLIGHT SAVING TIME SETTINGS
Clock
Automatic change
Hour solar/legal Yes
1hTransition Time:
Start: LAST SUNDAY
at 2.00
LAST SUNDAY
at 3.00
in MARCH
End:
in OCTOBER
— Clock: the daylight saving time settings are displayed in this window.
— Day-light saving time: this parameter indicates whether to enable adjustment
of system time based on the date, according to the subsequent settings.
— Transition time: This parameter indicates how much the system time must be
increased or decreased based on time change (depending on whether it is the
start or nish of daylight savings time).
— Start of daylight saving time use: this parameter indicates which day of the
month you must start to use daylight saving time; in order to specify this, you
must set two parts of the same parameter, the rst indicating the week (rst,
second, third or last), the second indicating the day of the week.
— Start month: this parameter indicates the month in which to start to use the
daylight saving time setting
— Start time: this parameter indicates the time in which to start to use the day-
light saving time setting
— End of daylight saving time use: this parameter indicates which day of the
month you must quit using daylight saving time; in order to specify this, you
must set two parts of the same parameter, the rst indicating the week (rst,
second, third or last), the second indicating the day of the week.
— End month: this parameter indicates the month in which to quit using the day-
light saving time setting
— End hour: this parameter indicates the time in which to quit using the daylight
saving time setting
11.3 SETTING THE CALENDAR FUNCTION
0/---
0/---
0/---
0/---
0/---
0/---
---
---
---
---
---
Calendar
Start Finish Action
01/JAN.
05/JAN.
06/FEB.
08/FEB.
OFF
HOL.
— Calendar: this window sets the actions to be carried out in the calendar func-
tion; this function allows you to set 5 periods, specifying the length in days, and
to connect a specic action to be carried out to each one of them.
— Start: Indicates the start date for the 5 periods that can be set.
— End: Indicates the end date for the 5 periods that can be set.
— Action: indicates the action to be carried out for each of the 5 periods set in
the calendar.
— Time periods start date: these parameters specify the starting date (day/
month) for each period; if you set 00/00 as the start and end value, this period
will be disabled.
— Time periods end date: these parameters specify the end date (day/month)
for each period; if you set 00/00 as the start and end value, this period will be
disabled.
— Actions set for the time periods: these parameters specify the action to be
carried out corresponding to the set periods; the actions can be:
O (unit switch-o during the period selected);
Fest (for each day of the period selected, settings relative to the time periods speci-
ed for the "HOLIDAY" will be carried out);
--- (no action).

20
12 ALARM MENU
Every time an alarm is generated, it is saved in an area of memory called “alarms
log”, which contains the last 100 alarms recorded in the unit. For every alarm saved,
dierent information is recorded regarding the unit situation at that time (work
temperatures and pressures), so that the technical after-sales sta can have a clear
view of the unit when a given alarm occurs.
To access the alarms log:
1. press the key ( ) and enter the alarms display;
2. if they are present, scroll all active alarms using the ( ) key and reach the icon
that indicates the activation of the alarms log;
3. press the key ( ) to enter the alarms log;
4. to exit the alarms log, press ( ) or ( ).
Alarm
High pressure sensor
circuit 1
broken or not connect
Active alarms: 15
AL05
— Alarm code: this parameter indicates the alarm code. This code can be found in
the previous pages (alarms summary table).
— Alarm description: this parameter indicates the description of the alarm saved.
— Alarm number: this value indicates the progressive number assigned to the
alarm; this value goes from 0 (rst alar recorded) to 99 (last alarm recorded).
— Indicates the possibility of scrolling the displays of the various active alarms sig-
nalled by pressing the keys and .
12.1 ALARM HISTORY
Alarm
Push key ENTER
to go HISTORY alarm
By using the keys to scroll inside the alarms menu, you access the indicated
screen from whence it is possible to enter the alarms log MENU.
C1:
C2:
15.7°C
0.0°C
0.0°C
24.5°C
8:22 29/3/11
AL 42 Recovery anti-freeze
Temp. Outlet
Plant
In Out
Recov.
OFF
OFF
N°003
8.3
4.0 14.7
12.5
8:22 29/3/11
100%
70%
AL 76 High temp.TGP
circuit 2
Circ 1
LP bar HP bar
Circ 2
Plant
Recov
N°003
The following descriptions are possible for each alarm:
— Date and time of triggering
— Nature of alarm
— System side input/output temperature
— Recovery input/output temperature
— Status of compressors
— Low pressure
— Status of unit
— Status of compressors
— Status of pumps
— High pressure