Comparato Diamix PR User manual

VER. 0.20

COMPARATO NELLO SRL
2
DIAMIX PR / COMPAMIX PR
NOTICES
This manual is an integral part of the product and shall be kept by the user. Read the warnings contained in the manual carefully, since they provide important information about safe installation, use and main-
tenance. Installation and maintenance shall be performed in accordance with the relevant regulations and the manufacturer's instructions. In case of failure and/or malfunctioning of the appliance, do not
attempt any repair or direct servicing. Always contact qualified personnel, as provided by law. Only qualified technicians are allowed to carry out any repair operation. Failure to comply with the provisions
listed above may compromise the safety of the appliance.
OPERATION
DIAMIX PR and COMPAMIX PR motorised electronic mixing valves are used in modern heating and/or cooling systems equipped with floor, wall or ceiling radiating panels for the control of the delivery
temperature and the dehumidification system: by exploiting the new functionalities they are able to keep under control the relative humidity inside the house and guarantee the maximum efficiency and the
maximum environmental comfort. Their design fits multiple installation applications: once installed in the system, it is possible to select the type of operation of the motorised valve, enabling or disabling
the various functions.
•
•
Fixed-point heating regulation
Outlet temperatures for winter heating is set by means of the actuator keyboard and display. When the room thermostat activates the motorized valve, it acts in order to maintain the outlet temperature constant
with an accuracy of +/-1°C.
Heating system with climatic function
The software automatically calculates the flow temperature to the heating “Tset_point” according to the external temperature detected by the relevant sensor (optional, code RFSONDAT) following programmable
climatic curves.
Tset_point = - (T_est * h1) + h2 where:
T_est = temperature measured by the external sensor.
h1 = angular coefficient of the adjustable curve between 0.1 and 1.0.
h2 = temperature constant adjustable between +30°C and +40°C.
DANGER:
DANGER:
Notices ___________________________________________________________________________
Operation ________________________________________________________________________
Remote management ______________________________________________________________________________________________
Features of the actuator _______________________________________________________________________________________________
Features of the ball valve __________________________________________________________________________
Installation __________________________________________________________________________
Electrical connections __________________________________________________________________________
Installation example __________________________________________________________________________
Keyboard and display __________________________________________________________________________
Activation and programming __________________________________________________________________________
Display alarms __________________________________________________________________________
Software reset __________________________________________________________________________
Accessories _______________________________________________________________________________________________________
General warranty conditions __________________________________________________________________________
INDEX
2
2
3
3
4
5
7
8
9
9
15
15
15
17
OUTLET TEMPERATURE Tsetclim [°C]
EXTERNAL TEMPERATURE Test [°C]
Example with h1 = 0,5
During winter heating, the Tset_point value is bound to a temperature range of [+25°C; +45°C].
Note: the system reads the external temperature every 30 minutes.
•Fixed-point cooling regulation
The outlet temperature for summer cooling is set by means of the actuator keyboard and display. When the room thermostat activates the motorized valve, it acts in order to maintain the outlet temperature
constant with an accuracy of +/-1°C. If the relative humidity and ambient temperature sensor (optional, code RFTRUEE10) is connected, if the difference between the calculated dew-point temperature and the
delivery temperature to the system is lower than the set reference value “CF2”, the motorised valve activates a special alarm by closing a digital contact and displaying a signal (ALc). Moreover, the relative
humidity value is constantly monitored and compared to a programmable reference value “CF1”: if the threshold value is exceeded, the motorised valve activates a special alarm by closing a digital contact and
sending a signal to the display (ALur).
CAUTION: this configuration requires a relative humidity adjustment system in the air-conditioned rooms independent of the mixing valve.
Electrical hazard! The unit contains high-voltage equipments.
Scalding hazard! Even in normal operation conditions, the unit can reach very high temperatures which may cause scalds.

3
230V • 24V 50 Hz
15 VA 14 VA
35 sec 45 sec
Compamix PR
Diamix PR
Power supply (110 V and 60 Hz on request)
Maximum power consumption
Operating time ( 90°)
Protection degree
Operational room temperature
Fluid type
Fluid temperature
Temperature sensors
Electronic adjuster
Fixed-point temperature adjustment range
Climatic function limits
Precision
Serial interface
Communication protocol
Recirculation pump relay flow
Input signals
Output signals
Cable length
Maintenance
Certification
IP65
-10°C to 50°C, UR max 85%
Water, water with glycol max. 30%
-10°C to +100°C (-20°C to +120°C with spacer)
Contact-type, NTC 10kΩ, 80 cm length
PID
Heating: 24°C ÷ 50°C • Cooling: 10°C ÷ 30°C
25°C ÷ 45°C
+/- 1°C
RS485
Modbus RTU
1A
Room thermostat • Summer/winter switch • External temperature sensor
Ambient temperature sensor • Relative humidity sensor
Indication of seasonality • activation of adiabatic dehumidifier
Activation of integration function
80 cm
None
CE
DIAMIX PR / COMPAMIX PR
COMPARATO NELLO SRL
REMOTE MANAGEMENT
DIAMIX PR and COMPAMIX PR are equipped with a MODBUS RTU interface; using the RS485 serial connection, it is possible to modify all the operating parameters, send commands to the valve, receive in-
formation on the operating status and perform diagnostics.
The DIAMIX PR / COMPAMIX PR mixing valves can be connected to the modern Building Management Systems (BMS).
TECHNICAL FEATURES OF THE ACTUATOR
•
•
Tracking cooling adjustment
The delivery temperature Tset_point for cooling is automatically calculated by the software as a function of the dew point temperature. The dew point temperature is calculated by means of the relative humidity
and ambient temperature sensor (optional cod. RFTRUEE10).
T_setpoint = Trugiada + CI3 where:
Trujade = Dew temperature calculated from relative humidity and ambient temperature.
CI3 = temperature constant adjustable between -3°C and +3°C.
The function also regulates the relative humidity in the environment: the dehumidifier can be activated by means of a digital output when the relative humidity falls below the “CI1” threshold. Thanks to the special
digital output it is possible to activate the integration mode of the dehumidifier: When the ambient temperature exceeds the value “CI2”, the contact is closed so that the dehumidifier injects dry air into the house
at a temperature lower than the ambient temperature.
Electronic security:
It is possible to set two limit temperature for the fluid: one for winter heating and one for summer cooling.
P3 = heating mode max temperature, adjustable between 50°C and 60°C
P4 = cooling mode min temperature, adjustable between 5°C and 13°C
When these values are exceeded, the mixing valve enters the “safety” mode: it stops the pump and connects the common (mixed) way to the system return and then blocks any active function.
The display alternatively shows the "ALt" notice and the real-time temperature detected by the outlet sensor.
The system resumes normal operation only when the temperature is back within the normal operation range.

COMPARATO NELLO SRL
4
DIAMIX PR / COMPAMIX PR
TECHNICAL FEATURES OF BALL VALVES
3-WAY VERTICAL MIXED OUTLET,COMPARATO CONNECTION
3/4"• 1" male with unions – thread according to ISO 228/1
3-WAY MIXED VERTICAL OUTPUT ISO 5211 CONNECTION
1/2"• 3/4" • 1"• 1"1/4 • 1"1/2• 2" Rp female threaded in accordance with 10226-1
3-WAY MIXED OUTLET IN HORIZONTAL LINE ISO 5211 CONNECTION
1/2"• 3/4" • 1"• 1"1/4 • 1"1/2• 2" Rp female threaded in accordance with 10226-1
3-WAY MIXED OUTLET IN VERTICAL LINE ISO 5211 CONNECTION
3/4" • 1"• 1"1/4 male with unions • 1"1/2• 2" Rp female threaded to 10226-1
1BODY BRASS CW617N
2COUPLING BRASS CW617N
3BALL BRASS CW617N
4 ROD BRASS CW617N
5 BALL SEAL P.T.F.E.
6 FLANGE ISO ALLUMINIUM UNI EN 1706
7 O-RING EPDM
1BODY BRASS CW617N
2COUPLING BRASS CW617N
3BALL CHROMED BRASS
CW617N PTL
4 ROD BRASS CW614N
5 BALL SEAL P.T.F.E.
6 SEAL P.T.F.E.
7 O-RING EPDM
1BODY BRASS CW617N
2COUPLING BRASS CW617N
3BALL BRASS CW617N
4 ROD BRASS CW617N
5 BALL SEAL P.T.F.E.
6 SEAL P.T.F.E.
7 O-RING FKM
1BODY BRASS CW617N
2COUPLING BRASS CW617N
3BALL CHROMED BRASS
CW617N PTL
4 ROD BRASS CW614N
5 BALL SEAL P.T.F.E.
6 SEAL P.T.F.E.
7 O-RING EPDM
* with union
* with union
** values referring to the most disadvantaged way (L)
** values referring to the most disadvantaged way (L)
Code
DN Δp max
[bar]
PN
ConnectionsMixing
KvS
[m
3
/h]
20 G 3/4"* 16 16 11,5 DIAMIXPBL
25 G 1"* 16 16 18,3 DIAMIXPCL
15 Rp 1/2"25 25 6 DIAMIXPFAL
20 Rp 3/4"16 16 11,5 DIAMIXPFBL
25 Rp 1"16 16 18,3 DIAMIXPFCL
32 Rp 1"1/4 10 10 27,2 COMPAMIXPDL
40 Rp 1"1/2 10 6 47,3 COMPAMIXPEL
50 Rp 2"10 4 73 COMPAMIXPFL
Code
DN Δp max
[bar]
PN
ConnectionsMixing
KvS
**
[m
3
/h]
15 Rp 1/2"16 3,4 6 DIAMIXPFAPRM
20 Rp 3/4"16 3,4 4,8 DIAMIXPFBPRM
25 Rp 1"16 3,4 8 DIAMIXPFCPRM
32 Rp 1"1/4 16 3,4 12,5 DIAMIXPFDPRM
40 Rp 1"1/2 16 3,4 11,5 DIAMIXPFEPRM
50 Rp 2"16 3,4 19,5 DIAMIXPFFPRM
Code
DN Δp max
[bar]
PN
ConnectionsMixing
KvS
**
[m
3
/h]
20 Rp 3/4"* 16 3,5 6,7 DIAMIXPFBPRV
25 Rp 1"* 16 3,5 11,4 DIAMIXPFCPRV
32 Rp 1"1/4 * 16 3,5 17,5 DIAMIXPFDPRV
40 Rp 1"1/2 16 3,5 26,8 DIAMIXPFEPRV
50 Rp 2"16 3,5 52,6 DIAMIXPFFPRV

CAUTION
The installation of a security thermostat which stops the
circulation pump in case of excessive outlet temperature
to the radiant system is highly recommended.
COMPARATO NELLO SRL 5
CAUTION
DIAMIX PR / COMPAMIX PR
VERTICAL MIXED HORIZONTAL-LINE MIXED VERTICAL-LINE MIXED
INSTALLATION
1: TEMPERATURE SENSOR
RED / GREEN (C)
RED (A) GREEN (B)
NOTE:
The pipe section where the temperature sensor will be placed must be made of metal. The following part of the pipe can be of any type, provided it is suitable to the use. Once the
valve body has been installed, the actuator can be rotated 180°. Mounting the actuator facing downwards is not allowed.
Once installed, the actuator connection should not be at
the bottom of the valve.
• SUBMERSIBLE OUTLET TEMPERATURE SEENSOR
As an alternative to the cuff sensor, the immersion sensor is available as an option.
It must be placed on the temperature-controlled outlet (M or AB) using a G3/8 " female
well (not included). The sensor is fitted with a connector for the electrical connection of
the actuator.
G 1/8" M
A- Outlet from primary system (red): during the winter operation (heating) this is the hot fluid inlet; during the summer operation (cooling) this is the cold fluid inlet. .
B- Return from radiant system (green)
C- Controlled temperature outlet (red & green): outlet to radiant system.
Colour-coded stamps identify the hydraulic connections as shown below:

DIAMIX PR COMPARATO CONNECTION
VERTICAL MIXED
DIAMIX PR - COMPAMIX PR ISO 5211 CONNECTION
ONLY IF NECESSARY
FLOW FROM
PRIMARY SYSTEM
FLOW FROM
PRIMARY SYSTEM
SYSTEM RETURN
RADIANT
SYSTEM RETURN
RADIANT
SYSTEM RETURN
RADIANT
FLOW FROM
PRIMARY SYSTEM
VALVE POSITION COMPLETELY HOT
DIAMIX PR
COMPAMIX PR
6
COMPARATO NELLO SRL
DIAMIX PR / COMPAMIX PR
LINE MIXED
DIAMIX PR ISO 5211 CONNECTION DIAMIX PR ISO 5211 CONNECTION
FLOW FROM
PRIMARY SYSTEM
FLOW FROM
SYSTEM
PRIMARY
SYSTEM RETURN
RADIANT
SYSTEM RETURN
RADIANT
OUTLET
MIXED
OUTLET
MIXED
VALVE POSITION COMPLETELY HOT
A AB
B

7
COMPARATO NELLO SRL
DIAMIX PR / COMPAMIX PR
ELECTRICAL CONNECTIONS
CAUTION:
ELECTRICAL CONNECTIONS NEED TO BE DONE INSIDE A PROPER BRANCH BOX (not included)
CAUTION:
ALL UNCONNECTED WIRE TERMINALS MUST BE ISOLATED
MAXIMUM CABLE LENGTH 30 METERS
EXTERNAL SENSOR
(RFSONDAE)
230V / 24V
50Hz
Modbus
RTU
CABLE
5 X 0,5 mm^2
CABLE
17 X 0,5 mm^2
ROOM THERMOSTAT
SWITCH
SUMMER/WINTER
DEHUMIDIFICATION *- 24V DC
CONTROL RELAY
DEHUMIDIFIER
WITH INTEGRATION FUNCTION
POWER SUPPLY 24V DC
(AL24VDC)
POWER
SUPPLY CABLE
5 x 0,5mm^2
SIGNAL CABLE
15 x 0,5mm^2
DIGITAL OUTLETS
DIGITAL INLETS
OUTDOOR
TEMPERATURE PROBE
ANALOG INPUT
RELATIVE HUMIDITY
AMBIENT
TEMPERATURE PROBE
MIXED
TEMPERATURE PROBE
RS485
Modbus RTU
230V 50/60 Hz
24V 50/60 Hz
PUMP CONTROL
Max 250V 1A
D+. D-
PHASE
NEUTRAL
TEMPERATURE AND RELATIVE
HUMIDITY SENSOR
(RFTRUEE10)
INTEGRATION *- 24V DC
CONTROL RELAY
SUMMER/WINTER CONTROL
RELAY *- 24V DC
PUMP DRIVE RELAY
230V SYSTEM PUMP
RFSONDAT
EARTH
BROWN
BLUE
RED
BLACK
GREEN
ORANGE
CENTRAL REGULATOR
TEMPERATURE SENSOR
* use the relay if the contacts of the connected devices are not voltage-free
Pin = pump power supply phase inlet
Pout = pump power supply phase outlet

DIAMIX PR / COMPAMIX PR
8
COMPARATO NELLO SRL
N° Description
Type
Colour
1 DEHUMIDIFICATION control
2 INTEGRATION command
3 SUMMER / WINTER control
4 GND
6 SUMMER / WINTER switching
7 BLUE Digital inlets Room thermostat
8 GND
9
10
11 Relative humidity 0-10V (+)
12 Relative humidity 0-10V (-)
13
14
15
16
- GREEN D- Modbus
ORANGE D+ Modbus
WHITE
YELLOW
WHITE
WHITE
WHITE
Temperature probe
Digital outlets
Max. 24V dc 50mA
External temperature sensor for climatic function
Mixed temperature sensor (connector)
Room temperature probeTemperature probe
Temperature probe
RS485
Analog input
RADIANT HEATING SYSTEM
WITH EXTERNAL TEMPERATURE SENSOR
FOR CLIMATIC FUNCTION
HOUSING UNIT
HEATING/COOLING SYSTEM
RADIANT WITH UMIDITY CONTROL BY MEANS OF
A DEHUMIDIFIER SUPPLIED WITH REFRIGERATED WATER
AT LOW TEMPERATURE
INSTALLATION EXAMPLES
1 Hydraulic compensator
2 System pump
3 Room thermostat
4 External probe
1 Diverter motorised valve
2 Hydraulic compensator
3 Distribution manifold
4 System pump
5 Summer / winter control
6 Room thermostat
7 Adiabatic dehumidifier / integrator
8 Temperature and relative humidity sensor
9 External probe
HOUSING UNIT
BOILER
BOILER CHILLER

DIAMIX PR / COMPAMIX PR
9
COMPARATO NELLO SRL
KEYBOARD AND DISPLAY
ACTIVATION AND PROGRAMMING
When all electrical and hydraulic connections have been made, electrical power can be supplied to the system. After a few seconds, "OFF" appears on the display. This is the default pre-set condition .
Press the "D" button: the display will show the real-time temperature detected by the sensor placed on the outlet pipeline.
The system is now operating.
HEATING/COOLING SYSTEM
RADIANT WITH UMIDITY CONTROL BY MEANS OF
A DEHUMIDIFIER SUPPLIED WITH REFRIGERATED WATER
FOR RADIANT PANELS
RED LED
GREEN LED
A: Down arrow key
B: Up arrow key
C: Enter key
D: ON/OFF key
CAUTION:
Carry out the appropriate programming described in the following paragraphs in order to have the equipment working according to the type of system installed.
1 Diverter motorised valve
2 Hydraulic compensator
3 System pump
4 Summer / winter control
5 Distribution manifold with electromechanical heads
6 Room thermostat
7 Adiabatic dehumidifier / integrator
8 Temperature and relative humidity sensor
9 External probe
HOUSING UNIT
BOILER CHILLER
DIGITAL
DISPLAY

DIAMIX PR / COMPAMIX PR
10
COMPARATO NELLO SRL
• PARAMETERS ON THE DISPLAY
“E. xx” = cooling mode system flow temperature - summer
“A. xx” = air-conditioned room temperature
“u.xx” = relative humidity of air-conditioned environment
“d.xx” = calculated dew point temperature
“I.xx” = system flow temperature, fixed point heating mode - winter
“C.xx” = system flow temperature, climate heating mode - winter
“r.xx” = external temperature
SUMMER
Can be displayed
if parameter
“Sensor = 1”
F = fixed-point regulation
F = fixed-point regulation
C = Climate control
I = tracking adjustment
WINTER

• DIGITAL OUTPUT STATUS DISPLAY
• FUNCTION SELECTION MENU
DIAMIX PR / COMPAMIX PR
11
COMPARATO NELLO SRL
OUT1 = Humidity alarm / Dryer control
OUT2 = Condensation alarm / Integrator control
OUT3 = Summer / Winter
• SUMMER / WINTER (E/I)
• HEATING (h)
FIXED POINT
CLIMATE CONTROL
• COOLING (c)
FIXED POINT
TRACKING
ON = output activated (contact closed)
OFF = output not activated (contact open)
To access the menu, when the display shows the outlet temperature to the radiant system, press the "B" and "C" buttons simultaneously. The display will show the "E-l" indication. Scroll the main menu with the “A”
and “B” buttons. Press the "C" button to enter the sub menu.
FLASHING

DIAMIX PR / COMPAMIX PR
• PROGRAMMING MENU OF OPERATING PARAMETERS
12
COMPARATO NELLO SRL
E-I
F-C
F-I
Where X means:
E = summer.
I = winter.
E.Imp = selection from external digital inlet E/I *
Press “A” or “B” to set the value.
Press “C” to save the value and exit the sub-menu.
(default “I”)
Where X means:
F = fixed point heating regulation function.
C = climatic heating regulation function.
Press “A” or “B” to set the value.
Press “C” to save the value and exit the sub-menu.
(default “F”)
Where X means:
F = fixed point cooling regulation function.
I = tracking cooling adjustment function.
Press “A” or “B” to set the value.
Press “C” to save the value and exit the sub-menu.
(default “F”)
MAIN
MENU SUB-MENU FUNCTION
X
X
X
h = heating parameters
To access the menu, when the display shows the "OFF" indication, press the "B" and "C" buttons simultaneously. The display will show the “h c” flashing notice. Press the “A” key to enter the heating programming
menu. The menu shows different parameters depending on the type of adjustment selected. Scroll the main menu with the “A” and “B” buttons. Press the "C" button to enter the sub menu.
tl
h1
h2
Where XX (°C) indicates the heating set-point temperature.
Press “A” or “B” to set the value.
Press “C” to save the value and exit the sub-menu.
Adjustment range: 24°C - 50°C (default 36°C).
Where X.X (tenths) indicates the angular coefficient of the climate curve.
Press “A” or “B” to set the value.
Press “C” to save the value and exit the sub-menu.
Adjustment range from 0.1 to 1.0 (default 0.5).
Where XX (°C) indicates the temperature constant of the climate curve.
Press “A” or “B” to set the value.
Press “C” to save the value and exit the sub-menu.
Adjustment range: 30°C - 40°C (default 35°C).
MAIN
MENU SUB-MENU FUNCTION
XX
X.X
XX
* wires no. 6-8: contact closed= winter - contact open= summer.
FLASHING
Fixed-point regulation Climatic adjustment

CF1*
CF2*
Where XX (%) is the maximum relative humidity for fixed point cooling.
When the value is exceeded, the alarm (Alur) is triggered.
Press “A” or “B” to set the value.
Press “C” to save the value and exit the sub-menu.
Adjustment range: 20% to 90% (default 55%).
Where XX (°C) is the Δt for the activation of the condensation alarm (ALc)
Press “A” or “B” for the setting the value.
Press “C” to save data and exit from the submenu.
Regulation range from 0°C to 5°C (default 5°C).
MAIN
MENU SUB-MENU FUNCTION
XX
XX
DIAMIX PR / COMPAMIX PR
13
COMPARATO NELLO SRL
c = cooling and humidity parameters
To access the menu, when the display shows the "OFF" indication, press the "B" and "C" buttons simultaneously. The display will show the “h c” flashing notice. Press key “B” to enter the cooling and humidity pro-
gramming menu. The menu shows different parameters depending on the type of adjustment selected. Scroll the main menu with the “A” and “B” buttons. Press the "C" button to enter the sub menu.
tE
SenS
Where XX (°C) indicates the cooling set-point temperature.
Press “A” or “B” to set the value.
Press “C” to save the value and exit the sub-menu.
Adjustment range: 10°C - 30°C (default 25°C).
Where X (boolean) means:
1 = relative humidity and ambient temperature sensor present.
0 = relative humidity and ambient temperature sensor not present.
Press “A” or “B” to set the value.
Press “C” to save the value and exit the sub-menu. (default 0).
(default 0)
MAIN
MENU SUB-MENU FUNCTION
XX
X
* are displayed in the menu only if SenS = 1.
FLASHING
Fixed-point regulation Tracking adjustment
Can be displayed
if parameter
“Sens = 1”

P = setting parameters
DIAMIX PR / COMPAMIX PR
14
COMPARATO NELLO SRL
Cl1
Cl2
Cl3
Cl4
Cl5
Where XX (%) indicates the maximum relative humidity for the tracking cooling.
Press “A” or “B” to set the value.
Press “C” to save the value and exit the sub-menu.
Adjustment range: 20% to 90% (default 55%).
Where XX (°C) shows the reference temperature for the integrator control.
Press “A” or “B” to set the value.
Press “C” to save the value and exit the sub-menu.
Adjustment range: 20°C - 30°C (default 24°C).
Where C (°C) indicates the temperature for calculating the Tset.
Press “A” or “B” to set the value.
Press “C” to save the value and exit the sub-menu.
Adjustment range: -3°C - +3°C (default 0°C).
Where XX (%) indicates the hysteresis on the relative humidity control.
Press “A” or “B” to set the value.
Press “C” to save the value and exit the sub-menu.
Adjustment range: 2% to 15% (default 5%).
Where XX (°C) indicates Δt activation of integrator command.
Press “A” or “B” to set the value.
Press “C” to save the value and exit the sub-menu.
Adjustment range: 0°C - 15°C (default 5°C).
MAIN
MENU SUB-MENU FUNCTION
XX
XX
X
XX
XX
P1
P2
P3
P4
ID
Where X.X (sec) indicates the outlet temperature sampling range.
Press “A” or “B” to set the value.
Press “C” to save the value and exit the sub-menu.
The adjustment range is from 1.0 sec. to 10.0 sec. (default, 3.0 sec).
Where XX (sec) indicates the delay time of the adjustment function from the room thermostat) inlet.
During this time, the relay output is activated (closure of the M3 contact).
Press “A” or “B” to set the value.
Press “C” to save the value and exit the sub-menu.
The adjustment range is from 0 sec. to 100 sec. (default, 30 sec).
Where XX (°C) indicates the maximum temperature above which the valve is forced on the radiant system return,
excluding any other active function.
Press “A” or “B” to set the value.
Press “C” to save the value and exit the sub-menu.
Adjustment range: 53°C - 60°C (default 55°C).
Where XX (°C) indicates the minimum temperature below which the valve is forced on the radiant system return,
excluding any other active function.
Press “A” or “B” to set the value.
Press “C” to save the value and exit the sub-menu.
Adjustment range: 5°C - 13°C (default 10°C).
Where XXX is the Modbus address of the device – REMOTE MANAGEMENT.
Press “A” or “B” to set the value.
Press “C” to save the value and exit the sub-menu.
Adjustment range from 0.1 to 255 sec (default 5).
MAIN
MENU SUB-MENU FUNCTION
X.X
XXX
XX
XX
XXX
To access the menu, when the display shows the "OFF" indication, press the "A" or "B" buttons. The display will show the "P1" indication. Scroll the main menu with the “A” and “B” buttons. Press the "C" button to
enter the sub menu.

DIAMIX PR / COMPAMIX PR
15
COMPARATO NELLO SRL
DISPLAY ALARMS
The outlet temperature sensor is disconnected, short-circuited or broken.
The motorised valve is forced on the return from the radiant system.
When the motorised valve is restored, its normal operation is resumed.
When the climate function is ON (parameter F/C = C), it means that the external temperature sensor is disconnected,
short-circuited or broken-down. The motorised valve is forced on the return from the radiant system.
When the motorised valve is restored, its normal operation is resumed.
With function E/I = E, with Sens = 1 in fixed-point adjustment or with tracking adjustment,
the temperature and/or relative humidity sensors are disconnected, shorted or faulty.
The motorised valve is forced on the return from the radiant system.
When the motorised valve is restored, its normal operation is resumed.
The difference between the calculated dew point temperature and the delivery temperature
to the system is within the range defined by the CF2 parameter.
The motorised valve continues to work according to the settings *.
The relative ambient humidity measured by the sensor has exceeded the maximum value defined by the CF1 parameter.
The motorised valve continues to work according to the settings *.
The delivery temperature is higher than the maximum value defined by parameter P3
or lower than the minimum value defined by parameter P4. The motorised valve is forced on the return from the radiant system and the pump has stopped.
When the temperature is within the normal operating range,
the alarm will disappear automatically.
ALARM FUNCTION
* alarms only expected in fixed point cooling mode with relative humidity sensor and ambient temperature connected (Sens parameter = 1).
SOTWARE RESET
With the reset operation, all software parameters return to the default values.
Disconnect the power supply from the motorized valve, hold down the "A", "C" and "D" buttons supplying power until the display shows the "PrES" indication.
Turn OFF and ON again in order to exit the reset operation.
ACCESSORIES
The sensor must be installed on an external wall of the building to be air-conditioned. Observe the following guidelines:
• it must be mounted on north or Northwest façade, avoiding any direct sunlight;
• it must be mounted at least 2 meters high;
• it must not be positioned near doors, windows, air duct exhausts nor close to flues or other heat sources
• the electrical connection to the external sensor must be made with a double-pole cable with 0.25-0.5 mm2 cross-section (maximum length 30 meters).
• it is not necessary to ensure the correct polarity of the cable to be connected to the external sensor.
• any cable joint must be tin-plated and properly protected;
• any cable duct of the connection cable must be separated from the power cable.
TECHNICAL FEATURES:
• Sensing element: NTC
• Temperature range: -35°C / +90°C
• Cable diameter: from 55 mm to 10 mm
• Size: 55 x 55 x 35 mm
• EXTERNAL TEMPERATURE SENSOR FOR CLIMATIC FUNCTION - code: RFSONDAE

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• TEMPERATURE AND RELATIVE HUMIDITY SENSOR - code: RFTRUEE10
For the installation and commissioning, refer to the technical manual supplied with the device. It is advisable install the sensor in the room where the condensation is more likely to occur.
Note: The mixing valve manages only one temperature and relative humidity sensor
ELECTRICAL CONNECTIONS TO THE ACTUATOR
• POWER UNIT 24V DC - code: AL24VDC
• MODBUS INTERFACE - USB - code: USBMOD
• DIN RAIL INSTALLATION
• V in: 230V 50Hz
• V out: 24V DC
• I out: 500 mA
P out: 12W
TECHNICAL DATA:
• USB 2.0 to RS485 converter
• Backward compatible with USB 1.1
• Connection via screw terminals
• Baud rate supported: 75 bps - 115200 bps / up to 6 Mbps
• Low power consumption, no external power supply required
• Supported operating systems: Windows XP / Vista / 7 / 8 / 10, Mac, Linux, Windows CE 5.0
• Operating temperature: -40 / +85 °C
• Size: 60 x 18 x 14mm
24V DC POWER SUPPLY
(AL24VDC)

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GENERAL WARRANTY CONDITIONS
WARRANTY
DURING THE WARRANTY PERIOD
WARRANTY EXCLUSION PROVISION
The DIAMIX PR and COMPAMIX PR motorized valves are covered by a 3-year warranty starting from the date marked on the base of the actuator (year of production). The warranty refers only to the product
and does not cover any replacement and/or maintenance and/or any other indirect cost. Products are covered by an Allianz s.p.a. insurance according to current rules regarding the manufacturer's responsibility
for any damage arising from defective products. For any returned good, users should contact the Retailer of the product. The goods should be returned postage-free.
During the warranty period, COMPARATO will repair or replace, free of charge, any product or component, provided it turns out to have a manufacturing defect. Any repair or replacement of the
component or of the product itself does not extend the warranty period. COMPARATO reserves the right to replace the Product with an identical one; if the product is out of production, it will be
replaced with one with identical specifications, provided that, according to the unquestionable opinion of COMPARATO nello S.r.l., the repair is not economically excusable.
Interventions and/or repairs and/or spare parts will not be covered by this Warranty if it turns out that they are defective because of:
• tampering;
• failure due to carelessness and/or unskilfulness during the installation (wrong, incomplete or missing assembling/wiring/setting);
• electrostatic discharge, electric discharge conducted/induced because of lightning or other phenomena not ascribable to the product, irradiated electromagnetic disturbances,
intermittent or discontinuous power supply.
• defects or damages caused by fall, breakage, liquid seepage;
• repairs made by unauthorised people;
• products with expired warranty;
• systems made in a non-workmanlike manner;
• any other damage not directly ascribable to COMPARATO.
Comparato Nello S.r.l. reserves the right to modify technical details, drawings, graphs,
and photographs of this instruction manual at any time and without prior notice.

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