Carel pCO User manual

Application program for pCO
Standard
Air-Conditioning units
Manual version: 1.5 - 30/05/96
Program code: EPSTDECZ00
Rif.: 76EM

INDEX
1. INSTALLATION GUIDE..................................................................................................................2
1.1. Description of the controller and components...............................................................................2
1.2- Hardware: user interface ............................................................................................................12
2. CONFIGURATION GUIDE............................................................................................................15
3. USER GUIDE....................................................................................................................................24
4. COMPONENTS AND CODES........................................................................................................39

2
1 - INSTALLATION GUIDE
1.1. DESCRIPTION OF THE CONTROLLER AND COMPONENTS
- CONTROL BOARD
The main board is the core of the controller.
It is made of:
# a section which includes the microprocessor and the memory for the machine
control algorithm;
# an I/O section which allows interfacing with controlled devices by means of a plug-
in terminal.
# a section devised for interfacing with supervisory network and terminal which can
be installed in a remote position.
The control board represents the core of the system as it contains the
microprocessor which performs the control algorithm and the user interface
management. This board is connected to a pCO terminal and to any options.
NO11
C11
NC11
VG1
Y1
B1
AVSS
B2
B3
B4
B5
B6
AVSS
AVSS
J14J15
G
G0
ID11R
ID11 (24V)
ID12R
ID12 (24V)
NO10
C10
NC10
NO9
C9
NC9
NO8
C8
NO7
C7
NO6
C6
NO13
C13
RS422
B8
B7
+24
IDCM2
ID10
ID9
ID8
ID7
ID6
IDCM1
ID5
ID4
ID3
ID2
ID1
NO12
C12
NO5
C5
NO4
C4
NO3
C3
NO2
C2
NO1
C1
R1
R2
R3
R4
R5R6
R7
R8
R9
R10
R11
R12R13
1
2
3
4
5
6
VG0
Y0
IC3
ID11 (220V)
ID12 (220V)
J28
J29 7
8
J17
J1
J19
J20
J21
J2
J3
J22
J4
J5
J24 J6
- List of components:
(1) 24 Vac supply cable
(2) Telephone cable connector for terminal connection (RS485) or for local
network connection
(3) Optional Clock board
(4) Optoisolated RS422 board for serial line connection for supervision and
telemaintenance
(5) Pin strip to select B5 and B6 voltage or current inputs
(6) Eprom with the programme
(7) Pin strip to select B28 and B29 voltage or current inputs
(8) Relay outputs
Rxx: Connectors for digital relay outputs

3
No: Normally open contact
Nc: Normally close contact
C : Common reference for contacts
ID : Digital inputs
IDCM: Common reference for digital inputs
Bx : Analogue input
AVSS: Reference for analogue outputs
Yx: Analogue outputs
VG1/0: 24V A.C. Analogue outputs power supply
- USER INTERFACE
Here below are listed all components of pCO control kit.
The terminal allows exchange of information by means of a LCD which displays the
values of all controlled parameters, selected set-points, alarm thresholds and in
general all data concerning the controlled variables in the specified formats.
Moreover, the display will showparticular messages any time an alarm condition
occurs. A keypad allowsthe setting of configuration parameters such as set-points,
alarm thresholds, alarm activation delays, etc. ...
The visible rubber buttons, which can be seen and pressed even when the front door
is closed, are the most important and the most used ones, above all when the
machine is ON.
The above quoted buttons are the following:
-1- ON/OFF button; -2- Buzzer silencing
and
alarm deactivating button; -3- button; -4- button; -5- ENTER button.
- FRONT PANEL
menu' I/O set prog.
estateinver.
?
info
This is the control board front panel. The 4X20 LCD on the panel displays the values
measured by the probes, working parameters and all necessary information for a
12345

4
complete and precise regulation. The keypad allows access to the masks of the
programme and any modification required.
The display normally shows ambient temperature and humidity together with time
and date if clock option is present.
The pCO keypad is equipped with 15 buttons which, together with 4X20 LCD,
represent the interface between user and controller.
menu' I/O set
?
info
prog
Directly from the keypad it is possible to gain access to the main parameters or to
some parameters loops.
The "AL "message, on the upper right corner of the display, indicates an alarm
condition and allows the access to the masks where the exact type of alarm is
identified (for further information see below - ALARM button
)
All reading and setting values are displayed according to a “tree” structure the user
can enter by means of the controller keypad.
- pCO KEYPAD
GENERAL FUNCTIONING:
The first 10 buttons, the ones which disappear when closing the front door, are
meant to allowthe user to perform any kind of procedures from programming to
parameters simple display. The blue and red buttons have not been used.
Their function is
to select
the required loop (or chain of masks). The 5 rubber
buttons are used for programming and for parameters display. Once completed the
procedures in a loop, which has been selected by pressing a button, the user only
has to press another button to go at once to another loop.
The buttons share the following peculiar features :
-1- A green
LED
next to each button indicates which button has been selected. The
LED remains ON as long as that loop of masks is being used. The LED is important
in case the user does not remember which loop has been selected. It is important to
point out that only one out of the 8 grey buttons can be ON, therefore activation of
one automatically deactivates the others. Moreover, the user must remember that
the LEDs will never be all OFF, because the mask menu is always on display;
therefore, the LED next to the menu is ON even if no procedure is being performed
or after a RESET due to a blackout:
-2- In the programme itself there is an automatic function which brings
back on display the menu mask and, as a consequence, the LED next to the menu
button will be turned ON again.
menu'

5
If, for example, the last procedure has been the setting of the printer parameters, for
some seconds the last selected mask will remain on display and the LED next to the
printer button will remain ON:
Once the selected time has elapsed, the LED next to the printer button will be turned
OFF, the one next to the menu button will be turned ON and the temperature and
humidity values will be displayed.
-3- Each loop of masks follows an order. This means that by pressing a button the
first
mask of the corresponding loop will be displayed. If the user then moves to
other masks of the loop and by chance presses again the same button, the first
mask will be displayed again.
MENU BUTTON
Gives information on the temperature and humidity values measured by the selected
probes (the temperature probe is the only one to be always present and not
selectable).
The procedure to be followed is:
- press the MENU button once
Result of procedure:
- the display will showthe mask which indicates ambient temperature, ambient
humidity, time, date and condition of the machine.
Procedure to be followed:
- press the and buttons
Result of procedure:
- cyclic visualisation of the loop of probe reading masks.
MAINTENANCE BUTTON
Allows visualisation and clearing of the total functioning hours of the main devices.
Procedure to be followed:
- press the Maintenance button once
Result of procedure:
- the display will show the working hours of the first three selected devices.
Procedure to be followed:
- press the and buttons
Result of procedure:
-cyclic visualisation of the masks which indicate for each device (heaters excluded)
the activity hours and the setting of threshold hours and hour clearing .
N.B. Reset of functioning hours: it is necessary to press ENTER to move the cursor
to the "NO" sign. To reset the machine it is necessary to keep the or the
button pressed for a couple of seconds until the “YES” sign appears. At this
point wait for the "NO" sign to be displayed again.
menu'
menu'

6
PRINTER BUTTON
Allows the user to manage the printer and to select its required parameters.
Procedure to be followed:
- press the Printer button once.
Result of procedure:
- the display will showa mask for the immediate setting of printing by simply pressing
Enter.
Procedure to be followed:
- press the and buttons.
Result of procedure:
- activates the cyclic repetition of masks for immediate printing setting,for cyclic
printing and, if the latter has been activated, of masks for the setting of cyclic printing
interval.
INPUT/OUTPUT BUTTON
Allows visualisation of the status of interface board inputs/outputs.
Procedure to be followed:
- press the Input/Output button once.
Result of procedure:
- the display will show the status of all digital inputs.
Procedure to be followed:
- press the and buttons.
Result of procedure:
- activates the repetition of masks which indicate the status of digital outputs,
analogue outputs and of digital inputs. Analogue inputs are already read in the Menu
branch, therefore they are not visualised here.
N.B. Since digital inputs 7- 8- 9- 10 can manage different devices according to
the settings effected in the manufacturer branch, I/O masks will indicate
the selected device next to the output number in question.
CLOCK/TIME ZONES BUTTON
Allows the setting of time and date as well as the management of time zones.
Procedure to be followed:
- press the Clock button once.
Result of procedure:
- the display will show a mask for the setting of the date (day, month, year).
I/O

7
Procedure to be followed:
- press the and buttons.
Result of procedure:
- repetition of the masks for the management of time, for the setting of the password
to gain access to the time zones branch, and again for the setting of the date.
Procedure to be followed:
- press the Enter button when the display shows the Password selecting mask.
Result of procedure:
- access to the field where the correct password (which is the same as the user
password, that is 1234) is to be selected. If the password has been correctly
selected, by pressing Enter you will move to the time zones branch, otherwise you
will return to the clock loop.
Only for Time Zones setting
Once the above quoted procedures have been followed, you reach a mask asking if
you want to select the time zones: if so, the following masks will be used to select
times and set-points for temperature and humidity, otherwise you will goback to the
first mask of the clock branch.
SET BUTTON
Allows the setting of set-points for ambient temperature and humidity regulation.
Procedure to be followed:
- press the Set button once.
Result of procedure:
- the display will show the mask for temperature set-point setting.
Procedure to be followed:
- press the and buttons.
Result of procedure:
- visualisation of the mask for humidity set-point setting.
PROGRAMMING BUTTON
Allows access to system parameters programming masks in all those functions the
user need to personalise regulation.
Procedure to be followed:
- press the Prog button once.
Result of procedure:
-the display will showthe user password (1234) selecting mask. If the password has
been correctly selected, by pressing Enter you will reach the user branch; otherwise,
you will remain in this mask.
Procedure to be followed:
- press the and button more than once.
set
prog

8
Result of procedure:
-visualisation of a series of masks for the setting of all values necessary to
humidity and temperature control and for the setting of set-points and differentials of
connected devices.
? INFO BUTTON
Allows visualisation of the software version.
Procedure to be followed:
- press the Info button once.
Result of procedure:
- the display will show the software version.
MANUFACTURER BUTTONS
Allowaccess to the manufacturer password selecting mask which, if correctly
selected (0123), enables entering the branch for activation of probes, connected
devices and their main functions, and for default configuration set-up (standard
values).
Procedure to be followed :
- press at the same time the Programming and the Menu buttons for a couple of
seconds.
Result of procedure:
- the display will showa mask for password setting. If the password has been
correctly selected, by pressing the Enter button you will gain access to said branch,
otherwise you will remain in the password selecting mask.
MANUAL BUTTONS
Allowaccess to the loop for the manual activation of devices if pressed together for a
couple of seconds.
Procedure to be followed:
- press for a couple of seconds the Menu and Set buttons.
Result of procedure:
- access to a mask asking if you want to select manual functioning of devices. If you
answer positively, you will gain access to a loop of masks which enables activation of
all devices. These masks can be reached by pressing the
and
buttons
.
ON/OFF BUTTON
Allows machine turning ON and OFF.
Procedure to be followed:
- press the ON/OFF button once.
?
info
menu' prog
menu'
set

9
Result of procedure:
-the LED indicator under the ON/OFF button turns ON :Unit ON;
-the LED indicator under the ON/OFF button turns OFF :Unit OFF.
ALARM BUTTON
Allowssilencing of the buzzer which has been activated in case of alarm and
resetting of alarms as soon as the reasons that caused them disappeared.
Procedure to be followed:
- press the Alarm button once.
Result of procedure:
- if before following this procedure there are no active alarms (LED under Alarm
button OFF, buzzer OFF, no alarm messages on display), the display will showa
mask informing of the absence of any alarms.
The mask will disappear if another button is pressed.
- if before following this procedure there is at least one active alarm (LED under the
Alarmbutton ON, buzzer ON, alarm message on display), the pressing of the Alarm
button silences the buzzer and on display appears the exact message of the alarm
which can be the only one or the first of a series. At this point, it is possible to check
if there are more than one active alarms and in that case which kind of alarms have
been activated. It is sufficient to press the or the buttons. In this case if there
are more than one active alarms a list of alarm messages will be displayed.
- if before following this procedure the buzzer has been silenced and the display
shows an alarm mask, two are the possibilities: if the reasons which caused the
alarms have disappeared, the LED indicator under the Alarm button will turn OFF
and the programme will automatically return to the menu mask (this function is called
Clear); if the reasons which caused the alarms have not disappeared the buzzer will
be reactivated.
- if before following this procedure the buzzer has been silenced and the display
showsany masks except an alarm one, the programme will automatically enter the
alarm branch where it is possible to select the Clear function.
UP / DOWN BUTTONS
Allowto move upwards or downwards in the masks of the loop. If used after pressing
the Enter button, they allow selection of the parameter values.
(1) If a loop is composed of masks 1, 2, 3, 4, and 5 and mask 1 is on display, by
pressing the button more than once the masks will scroll following the order: 1,
2, 3, 4, 5, 1 etc... Bypressing the button more than once the masks will scroll
following the order: 1, 5, 4, 3, 2, 1 etc...
(2) If, with reference to the same example, mask 3 is on display and the Enter button
is pressed, the cursor will jump from position 0,0 to the numeric field. By pressing the
button the number will increase; by pressing the button the number will
decrease.

10
ENTER BUTTON
Allows parameter setting (through the and buttons) and is used to confirm
data after setting. (1) If, for example, the display shows a mask with the message:
“Temperature Set-point Setting”, by pressing Enter the cursor will go from 0,0
position to the numeric field where a digit like 020.0 (20 ºC) is displayed. By means
of the and button it is possible to modify this value. (2) By pressing Enter
again the cursor will go back to 0,0 and at the same time the modified value will be
memorised.
- pCO TERMINAL BOARD REAR PART
The terminal board is composed of
# a section including the microprocessor
# a section which allows interfacing with pCO and a serial printer
MICROPROCESSOR
CONNECTION
CONNECTION
TO pCO
CONTROLLER TO PRINTER
- EPROM
The Eprom socket is on the interface board.
The Eprom should be placed with the chip reference notches coinciding with the
terminal board ones.
With reference to the picture :
On inserting paygreat attention:
 an arrow on the label shows the exact Eprom inserting position.
 to the Eprom correct polarity, during the set-up the notch on the Eprom should
coincide with the one on the socket.
Particular attention should be paid also to the set-up itself so as to avoid bending or
breaking the component pins.
- TROUBLESHOOTING

11
THE UNIT DOES NOT START
LED of the ON/OFF button is turned OFF, the display is OFF, other LEDs
turned OFF.
Check :
a. that power supply is present
b. that there are 24 VAC of power supply voltage at the secondary coil
transformer (220 - 24 VAC)
c. the correct insertion of 24 VAC power supply connector in the proper socket.
WHEN TURNING ON THE INSTRUMENT YOU FIND:
alarm LED indicator ON ,
display with no or random messages
buzzer ON.
Check :
a. that the Eprom has been inserted with the correct polarity
b. that the Eprom pins have not been bent on inserting the Eprom itself
c. that the microprocessor chip has not been damaged: in that case contact the
assistance.
WRONG INPUT SIGNALS READING
Check:
a. that the connection of probes cables is in accordance with instructions
b. that probe signals pass on cables installed at a sufficient distance from
possible excessively disturbing sources (power cables, contactors, high-
voltage cables and cables with high inrush ampere consumption connected
devices)
c. connections between interfaces and controller (flat cables)
d. correct power supply of interfaces and probes
DAMAGED EPROM ALARM
a. Contact the assistance
THE CONTROLLER ACTIVATES THE WATCH-DOG FUNCTION, THAT IS IT TURNS ON
AND OFF ASFOR APOWER SUPPLY FAILURE OR ACTIVATES SOME OUTPUTS AT
RANDOM (DIGITAL AND/OR ANALOGUE)
Check :
a. the connections between controller and interfaces
b. that power cables do not pass near interfaces and control board
microprocessors.
- DIGITAL VOLTAGE INPUTS CONNECTION (220 Volt ac; 24 Volt ac)
The pCO controller allows voltage digital inputs to be connected with terminals ID11 -
ID11R and ID12 - ID12R as shown in the picture below.
When the general alarm input is open, the high pressure alarm on pCO input will be
detected.
Connections must be done as follows:
Digital Input 11 : connection between ID11R (common) and ID11 (24V) if 24V are
applied, or between ID11R (common) and ID11 (220V) if 220V are applied.
Digital Input 12 : connection between ID12R (common) and ID12 (24V) if 24V are
applied, or between ID12R (common) and ID12 (220V) if 220V are applied.
N.B. Do not apply 220V to the terminals ID11 (24V) and ID12 (24V).

12
220 Volt
inputs
pCO voltage
ID11R
ID11 (24/220V)
0 Volt = alarm situation
220/24 Volt = normal situation
24 Volt
general alarm
compressor
- DIGITAL OUTPUTS CONNECTION
Macroplus / pCO terminal connector
device (ex. motor pump)
24/220 Volt
1o / NO
1c / C
1.2- HARDWARE: USER INTERFACE
The user interface comprises all those components, such as keypad, display and
LED indicators, which are necessary for the exchange of information between the
user who needs air conditioning and the microprocessor devised by CAREL for the
managing of this operation.
- POWER SUPPLY
Connect the 24 V secondary of the network transformer to inputs G0-G placed on
the controller.
- INPUTS/OUTPUTS
The “Reference” column indicates the contacts on the board shown on page 3.
DIGITAL INPUTS
REFERENCE DIGITAL INPUT
ID1 - IDCM1 COMPRESSOR 1 GENERAL ALARM (HIGH PRESSURE OR OVERLOAD)
ID2 - IDCM1 COMPRESSOR 2 GENERAL ALARM (HIGH PRESSURE OR OVERLOAD)
ID3 - IDCM1 COMPRESSOR 1 LOW PRESSURE
ID4 - IDCM1 COMPRESSOR 2 LOW PRESSURE
ID5 - IDCM1 CLOGGED FILTER
ID6 - IDCM2 FAN OVERLOAD
ID7 - IDCM2 AIR FLOW DETECTOR
ID8 - IDCM2 REMOTE ON / OFF
ID9 - IDCM2 HEATER 1 OVERLOAD
ID10 - IDCM2 HEATER 2 OVERLOAD
ID11 - ID11R NOT USED
ID12 - ID12R FIRE
ANALOGUE INPUTS

13
REFERENCE ANALOGUE INPUT
B1 - AVSS AMBIENT TEMPERATURE PROBE
B2 - AVSS OUTLET AIR TEMPERATURE PROBE
B3 - AVSS OUTLET WATER TEMPERATURE PROBE
B4 - AVSS OUTSIDE AIR/ INLET WATER TEMPERATURE PROBE
B5 - AVSS AMBIENT HUMIDITY PROBE
B6 - AVSS NOT USED
DIGITAL OUTPUTS
REFERENCE DIGITAL OUTPUT
R1 PARTIALISATION /REDUCTION FAN SPEED VALVE
R2 MAIN FAN - (SYSTEM ON)
R3 ENERGY SAVING VALVE
R4 HUMIDIFICATION
R5 COMPRESSOR 1 PARTIALISATION - (FILL WATER VALVE)
R6 COMPRESSOR 2 PARTIALISATION - (DRAIN WATER VALVE)
R7 OPENING COLD WATER THREE-POINT VALVE/COMPRESSOR 1
R8 OPENING COLD WATER THREE-POINT VALVE/COMPRESSOR 2
R9 OPENING HOT WATER THREE-POINT VALVE/HEATER 1
R10 OPENING HOT WATER THREE-POINT VALVE/HEATER 2
R11 GENERAL ALARM SITUATION
ANALOGUE OUTPUTS
REFERENCE ANALOGUE OUTPUT
VG0 - Y0 COLD WATER VALVE
VG0 - Y1 HOT WATER VALVE
- pCO OPTIONAL BOARDS INSTALLATION
Clock board
This board allows to display date and time as well as
the management of Time-bands. To use this board
connect it to the connector (3) shown in the picture
on page 3.
Cod. MNEWCLOCK0
Serial optoisolated board RS422
This serial board RS422 allows pCO network
connection. This enhances remote and local
telemaintenance and supervisory systems.
To use this board connect it to the connector (4) shown
in the picture on page 3.
Cod. PCOSER0000
.

14
- JUMPER SETTING FOR 4-20 mA PROBES
N.B.
Remember to place the jumper of J14 (analogue input n.5), J15 (analogue
input n.6), J28 (analogue input n.7) and J29 (analogue input n.8) in the
position shown in the picture in order to configure the pressure
transducer reading into the 4-20 mA mode.
- FIRST INSTALLATION
There are two phases:
a) Hardware connection
AFTER HAVING CHECKED THAT THE MATERIAL RECEIVED IS EXACTLY
THE ONE YOU REQUESTED, UNPACK IT AND CONNECT THE SINGLE
PARTS TO ASSEMBLE THE CONTROLLER AS DESCRIBED BELOW:
- connect the telephone cable between the Interface and the pCO controller.
- insert the Eprom with the programme in the proper socket
*** WARNING: INSERT THE EPROM IN THE RIGHT WAY ***
- connect all probes and devices to the controller, following the indications of the
inputs/outputs table
- connect power supply with interface
b) Software initialisation
Software initialization means to correctelyset-up all the parameters in order to
allow the unit to work.
The machine will thouroughly meet the costumer's requirements, only if all the
selected parameters (contained in the following branches: Programming,
Manufacturer, and Maintenance) take into account the type of plant, present
devices, and control parameters (setpoints, threshold alarms, etc).
All the selected parameters are contained in the buffer storage (a memorythat
maintain the selected values also in the absence of voltage).
When the machine is first installed, the stored parameters are the parameters
established by Carel (Default values) which ensure a standard working of the
machine but not really meet the costumer's requirements.
Tomodifythe parameters the operator must enter the branches of interest and
change the incorrect parameters. All the modified parameters are stored again.
On page 20 a complete list of the default values is shown.
On certain circumstances the machine could present some parameters no more
answering the needs of the user (following a test or change of the equipment to
be controlled, etc), and their recovery would involve an excessive expenditure of
time.
In this case it is advisable to recover the default values established by Carel and
afterwards to change the ones tha are not in a accordance with the equipment.
To do this the following operations are needed:
Keep pressed for more than 2 seconds the Menu + Prog buttons;
- due to the previous action you are nowin the Manufacturer Password. Nowit is
necessary to correctly select the Manufacturer Password.
Two different passwords are available:
-hardaware " 0123 " password that must be known only by the assistance
technician or qualified personnel.
123

15
It is used during the preliminary operations, and whenever it is impossible to have
access to the branch MASTER password (because the memory has been
"spoiled").
- MASTER password: the value of this password is selected in the password set
mask. It must be used during the normal working of the machine;
- having correctly selected the password, press Enter; you reach the mask
indicating the branch "Special Procedures";
-you are nowin the INSCONFIG mask which permit the erasure and the
installation of the default values in the buffer storage; pressing once or
allowsto change the answer to the question from NOT to YES. Do not do any
operation and wait until the text becomes again No.
Now the installation of the default values is completed.
2. - CONFIGURATION GUIDE
2.1 SET-POINT - DIFFERENTIAL - DEAD ZONE
Temperature control may be based on a proportional or proportional + integral
regulation that can be selected by entering the GTEMP2 mask, the branch is named
"Temperature Management" under password “service”.
The proportional control works in a proportional way in function of the difference
between the required temperature or humidity value (SET-POINT) and the actual
value.
The P+I regulation is based on the error between the required temperature and the
measured temperature in relation to the moment in which the difference between
the two values persists (the integration constant can be selected in the GTEMP5
mask).
The humidity control is a proportional control; the humidifier is activated when the
relative humidity value is lower than the "set-point-differential".
The PROPORTIONAL BAND defines the temperature/humidity control area. The
more the value differs from the selected Set-point the greater is the control effect.
-The selected differential is half of the total differential: for temperature control, the 3
Centigrade Degrees selected as default values are to be intended above and below
the set-point; in case there are 3 heaters and 2 compressors, the latter will turn ON
when the set-point is 23 degrees (default) + differential (3 degrees), whereas all
heaters will be active at 20 degrees.
- The selected DEAD ZONE corresponds to a half of the total dead zone; the dead
zone prevents the control action when the temperature values are near the set-point.

16
2.2 STEP
For each step it is possible to select the following:
- the set-point of the step itself (% value of the regulation differential)
- the hysteresis, that is half of the step dimension and a % value of the differential
Each step is connected to a device:
Cold step -------> Compressor
Hot step -------> Heater

17
2.3 DEFAULT VALUES
The factory-set configuration provides for the following devices:
- ambient temperature probe
- ambient relative humidity probe
- outside air temperature probe
- water temperature probe
- cold water valve
- hot water valve
- all heaters enabled (n.2)
- both compressors enabled
- external humidifier
Here is the list of the default values the controller accepts as machine parameters
whenever the user answers affirmatively to the mask successive to that of back-up
memory deletion in the “special procedures” branch.
SELECTABLE PARAMETERS RANGE PRE-SET
Temperature set-point 15÷30 23.0º
Temperature differential 1÷10 3º
High temperature threshold 10÷50 30º
Low temperature threshold 0÷30 10º
Integration constant **** 600 sec
Only 1 compressor enabled;
Set-point compressor 1 in CW 0÷100% 50%
Hysteresis compressor 1 in CW 0÷100% 50%
or;
Set-point compressor 1 in ES 0÷100% 66%
Hysteresis compressor 1 in ES 0÷100% 33%
Both compressors enabled;
Set-point compressor 1 in CW 0÷100% 25%
Hysteresis compressor 1 in CW 0÷100% 25%
Set-point compressor 2 in CW 0÷100% 75%
Hysteresis compressor 2 in CW 0÷100% 25%
or;
Set-point compressor 1 in ES 0÷100% 49%
Hysteresis compressor 1 in ES 0÷100% 16%
Set-point compressor 2 in ES 0÷100% 82%
Hysteresis compressor 2 in ES 0÷100% 16%
1 heater enabled;
Set-point (not modifiable) 0÷100% 25%
Hysteresis (not modifiable) 0÷100% 25%
2 heaters enabled;
Set-point heater 1 (not modifiable) 0÷100% 25%
Hysteresis heater 1 (not modifiable) 0÷100% 25%
Set-point heater 2 (not modifiable) 0÷100% 75%
Hysteresis heater 2 (not modifiable) 0÷100% 25%
Beginning cold water valve 0÷100% 0%
End cold water valve 0÷100% 100%
Beginning hot water valve 0÷100% 0%
End hot water valve 0÷100% 100%
Set-point relative humidity 0÷100UR% 50%
Humidity differential 5÷20%UR 10%
High humidity threshold 0÷100% 80%
Low humidity threshold 0÷100% 30%
Set-point dehumidification step 0÷100% 50%

18
Hysteresis dehumidification step 0÷100% 10%
Start-up delay **** 15 sec
Threshold working hours compressor 1 1÷4000h 4000h
Threshold working hours compressor 2 1÷4000h 4000h
Threshold working hours humidifier 1÷4000h 4000h
Threshold working hours fan 1÷4000h 4000h
Water high temperature threshold **** 20º
Water low temperature threshold **** 2º
Delay between compressors start-ups **** 360 sec
Min. time compressors ON **** 60 sec
Min. delay for compressors re-start **** 180 sec
Low pressure alarm delay **** 180 sec
Digital inputs detection delay **** 60 sec
High/low temperature alarm delay **** 30 min
Heaters insertion delay **** 3 sec
Time-band 1 (hs) for temperature 00:00/23:59 6:00
Time-band 2 (hs) for temperature 00:00/23:59 12:00
Time-band 3 (hs) for temperature 00:00/23:59 18:00
Time-band 1 (hours) for humidity 00:00/23:59 6:00
Time-band 2 (hours) for humidity 00:00/23:59 12:00
Time-band 3 (hours) for humidity 00:00/23:59 18:00
Temperature set-point 1st zone **** 21º
Temperature set-point 2nd zone **** 21º
Temperature set-point 3rd zone **** 21º
Temperature set-point 4th zone **** 21º
Humidity set-point 1st Time-band **** 50%
Humidity set-point 2nd Time-band **** 50%
Humidity set-point 3rd Time-band **** 50%
Humidity set-point 4th Time-band **** 50%
2.4 MANUAL CONTROL
This part of the programme allows the manual activation of the various DEVICES. In
order to preserve the integrity of the devices and to ensure maximum safety, the
interblock and its protections are always present.
In order to enable the manual functioning of the unit it is necessary to followthe
procedures described in the paragraph dedicated to pCO keypad.
Manual functioning of the unit is identified by the “M” letter that appears in the last
part of the display.