FWE07DAFN5V3-S - Air Conditioning DAIKIN - Free user manual and instructions

Product type	Hydronic air conditioning with digital controller
Brand	Daikin
Model	FWE07DAFN5V3-S
Power supply	230 V ~ 50/60 Hz
Power consumption	2.5 W
Ventilation type	Step (3 or 4 speeds) or modulated
Valve type	ON/OFF or modulating (2 or 3 way)
Main functions	Summer/winter switchover, dehumidification, time schedules, economy mode, frost protection, minimum temperature control
Display	Touch screen
Connectivity	RS485 (Modbus), powerline carrier, Wi-Fi/BLE (optional)
Sensors	Air temperature (built-in or remote), water temperature (1 or 2), humidity
Configurable digital output	Yes (NO/NC dry contact)
Digital inputs	Remote ON/OFF, summer/winter switchover, economy
Time schedules	Up to 3 temperatures per day, profile copy
Communication protocol	Modbus RTU
Operating temperature	0 to 50 °C
Storage temperature	-10 to 60 °C
Protection rating (interface)	IP30
Standards	EN 60730-2-9, EN 60730-1, EN 61000-6-1/3
Safety	Installation by qualified technician, use of PPE, compliance with regulations
Maintenance	Clean with a soft cloth, do not use solvents

Frequently Asked Questions - FWE07DAFN5V3-S DAIKIN

How to change the setpoint temperature?

From the home screen, use the + or - buttons located on either side of the setpoint value display to adjust it.

What to do in case of a sensor alarm?

Check the wiring of the concerned sensor. Possible alarms include air, water, or humidity sensors. Consult the alarm menu on the screen for more details.

How to activate the energy saving function (Economy)?

From the user menu, press the dedicated Economy button. This adjusts the setpoint by 2.5 °C and forces the ventilation to minimum speed.

How to configure the time schedules?

Access the time schedule menu. You can enable/disable programmed operation, set up to 3 temperatures for summer and winter, and copy a day's profile to other days.

What is the meaning of the LEDs on the power board?

The blue LED indicates unit OFF, green indicates ON, red means alarm. The network LED (NETWORK LED) is on the left, the status LED (STATUS LED) on the right.

How to clean the user interface?

Use a dry soft cloth. Never pour liquid on the device and do not use chemical solvents or metal objects.

Can I connect the system to a supervisory network?

Yes, via the RS485 port with Modbus RTU protocol. Configure the controller in 'SPV Slave' mode and set the address, baud rate, etc.

How to switch from summer to winter mode?

Use the MODE button on the screen. The switchover can also be automatic based on water or air temperature, or via a digital input.

What to do if the screen does not turn on?

Check the wiring between the user interface and the power board, as well as the power supply to the board (STATUS LED). Try changing the connection cable.

What types of fans are compatible?

The controller manages multi-speed fans (3 or 4 steps) or modulating fans (variable speed 0-100%) with 0-10 V output.

USER MANUAL FWE07DAFN5V3-S DAIKIN

4.1.2 Changing the air temperature set-point ..... p. 5

4.1.3 Changing the fan speed.... p. 5

4.2 USER MENU p.6

4.2.1 Time slots menu p. 6

4.2.2 Programming of time slots ..... p. 6

4.3 MAINTENANCE MENU p.7

4.3.1 Information menu ...... p. 7

5 PARAMETER LISTS ...... p. 8

5.1 CONFIGURATION PARAMETERS LIST.....p.8

5.1.1 Scroll and modify mode....p. 8

5.1.2 Table of parameters p. 8

5.1.3 Configuration constraints.... p. 8

5.1.4 Configurable digital output.... p. 9

5.1.5 Stand-by mode....p. 9

5.1.6 Interruption in the serial connection ..... p. 9

5.2 REGULATION PARAMETERS LIST....p.9

5.3 NETWORK AND CONNECTIONS PARAMETERS LIST (PASSWORD 20)..... p. 10

6 REGULATION LOGIC ...... p. 11

6.1 SUMMER/WINTER SWITCHOVER.... p. 11

6.2 VENTILATION p.11

6.2.1 General issues ...... p. 11

6.2.2 Natural convection.... p. 11

6.2.3 Step ventilation p. 11

6.2.4 Modulating ventilation p. 12

6.2.5 Forced speed p. 13

6.2.6 Fan enabling signal from water probe..... p. 13

6.3 VALVE.... p. 14

6.3.1 ON/OFF valve.... p. 14

6.3.2 Modulating valve p. 14

6.3.3 Valve enabling signal from water probe ..... p. 14

6.4 ELECTRICAL HEATING ELEMENTS.... p. 14

6.4.1 Start up p. 14

6.4.2 Heating element enabling signal from water probe p. 15

6.5 ECONOMY p.15

6.6 MINIMUM TEMPERATURE CONTROL..... p. 15

6.6.1 Start up ...... p. 15

6.7 DEHUMIDIFICATION p.15

6.7.1 Logic p. 15

6.7.2 Dehumidification enabling signal from water probe p. 16

6.8 ALARMS p.16

7 NETWORKS AND CONNECTIVITY ..... p. 17

7.1 CONNECTION TO MONITORING SYSTEM.... p. 17

7.2 "SMALL" NETWORK SOLUTIONS.... p. 19

7.3 MIXED NETWORK p.20

8 MEANING OF LED ...... p. 21

9 TECHNICAL SPECIFICATIONS ..... p. 22

10 INSTALLATION AND MAINTENANCE... p. 22

10.1 INSTALLATION OF THE PROBES.... p. 22

10.2 INSTALLATION OF THE REMOTE AIR PROBE ...... p. 23

10.3 INSTALLATION OF THE WATER PROBE ..... p. 23

10.4 INSTALLATION OF THE USER INTERFACE.... p. 24

10.5 ON-BOARD INSTALLATION OF THE CIRCUIT BOARD p. 24

10.6 ELECTRICAL CONNECTIONS p. 24

10.7 MAINTENANCE.... p. 25 Cleaning.... p. 25

10.8 TROUBLESHOOTING.... p. 25

10.9 I/O TABLE OF THE BOARD.... p. 26

10.10 CONFIGURATION EXAMPLES ...... p. 27

1 GENERAL CAUTIONARY NOTES

Carefully read this manual.

Installation and maintenance should be carried out by technical personnel qualified for this type of machine, in compliance with current safety regulations.

When receiving the unit please check its state verifying if any damage occurred during the transport. For installation and use of possible accessories please refer to the pertinent technical sheets.

The manual are subject to changes, in any times, without prior notice aimed at improving the product.

Daikin will not accept any liability for damage or injury caused as a result of installation by non-qualified personnel; improper use or use in conditions not allowed by the manufacturer; failure to perform the maintenance prescribed in this manual; use of spare parts other than original factory parts.

SAFETY SYMBOLS

Carefully read this manual.

Warning

Use personal protective equipment

⚠ WARNING: Electrical and electronic products may not be mixed with unsorted household waste. Do NOT try to dismantle the system yourself: the dismantling of the system, treatment of the refrigerant, of oil and of other parts must be done by an authorized installer

USE SUITABLE PPE (GLOVES FOR REFRIGERANT, PROTECTIVE GOGGLES)

and must comply with applicable legislation. Units must be treated at a specialized treatment facility for reuse, recycling and recovery. By ensuring this product is disposed of correctly, you will help to prevent potential negative consequences for the environment and human health. For more information, contact your installer or local authority.

2 GENERAL CHARACTERISTICS

The FWTOUCH controller has been designed to govern the operation of all the Daikin indoor hydronic units with a single-phase multi-speed motor or coupled to an inverter for fan speed modulation.

FWTOUCH controller is a system composed of:

— Circuit board comprising the power circuit, the microprocessor system and the removable screw connectors for the connection of the inlet and outlet devices;

— Touch screen display interface equipped with a clock and probes to read the ambient temperature and the ambient air humidity.

IMPORTANT: The connection between the

circuit board and the user interface is made by means of the appropriate connectors using a data transmission cable containing a pair of twisted and shielded conductors.

The controller makes possible serial communication for connecting to two types of networks:

— Solution with supervisor: connection to an external monitoring system with MODBUS RTU protocol on RS485 serial port;

— SMALL solution: connecting multiple FW-TOUCH controls in two possible configurations:

1. MASTER/SLAVE on RS485 serial port

2. MASTER/SLAVE on PLC (Power-Line

Communication).

— MIXED NETWORK solution: connection several FWTOUCH controls at various levels of autonomy:

1. RS485 network MASTER (Supervisor or FW-TOUCH), sending instructions to RS485

SLAVES (known as zone MASTER);

of2. Zone MASTER (FWTOUCH), receiving instructions from RS485 network MASTER, sending instructions to the PLC SLAVES;

1. PLC network SLAVE, operation identical to that of the zone master.

3 MAIN FUNCTIONS

— Automatic or manual (keyboard selectable) regulation of fan speed;
— Control of ON-OFF or modulating valves for two- or four-pipe systems;
— Control of a heating element for auxiliary heating;
— SUMMER/WINTER switchover (= cooling / heating) according to four possible modes:

1. manual via keyboard;
2. remote manual (from digital input);
3. automatic, depending on water temperature;
4. automatic, depending on air temperature.

— Control of the dehumidify function;
— Operation with TIME SCHEDULES

Additional features include:

— Digital input for external activation (for example: window contact, remote ON/OFF, occupancy sensor, etc.) that may enable or disable operation of the hydronic indoor unit (contact logic: see circuit board configuration parameters);
— Digital input for centralised remote cooling/heating switching (contact logic: see circuit board configuration parameters);
— Digital input for remote enabling of the ECONOMY mode (contact logic: see circuit board configuration parameters).
— One completely configurable digital output (no-voltage contact)
— Standard ambient air temperature probe (located inside the user interface);
— Water temperature probe (accessory), one or two (optional in case of 4-pipe system);
— Remote ambient air temperature probe (accessory) which, if connected, can be used in place of the one installed as standard in the user interface;
— Remote ambient air relative humidity probe (accessory).

4 SCREENS AND FUNCTIONS

4.1 USER INTERFACE

The main screen is composed of the following areas:

— user menu access key;
— room temperature (read by the remote probe

on the user interface or by the probe connected to the circuit board terminal board as configured);

— ON/OFF key;
— current temperature SET-POINT value, mod ifiable;
— fan status, modifiable;
— Status symbols

Active time schedules

Active minimum ambient temperature function

Electric heating element enabled

Open valve

Active economy function

Supervision connection

Presence of alarm (no other line symbol is displayed; text describing the alarm type appears)

Smartphone connection

Local Network connection

Summer mode (cooling)

Winter mode (heating)

4.1.1 User menu access

Access to the user menu is only allowed if the keypad has not been locked or the user-restriction function has not been activated.

Keypad locked: User-restriction mode

4.1.2 Changing the air temperature set-point

To change the air temperature SET-POINT, you must display the HOME screen with the hydronic indoor unit on, then proceed as follows:

— Press + / - keys located on the sides of the SET-POINT display area to change its value.

4.1.3 Changing the fan speed

To change the fan speed, you must display the HOME screen with the hydronic indoor unit on, then proceed as follows:

— Press + / - keys located on the sides of the fan display area to change its value.
— In the case of a modulating fan, the fan speed expressed as a percentage will be displayed in the place of the steps. Pressing the + / - keys allows you to vary this value from the minimum limit set to the maximum limit (see REGULATION MENU); setting values beyond the limits will cause the automatic ventilation mode to be automatically set;

— if the difference between the measured ambient air temperature and the set-point is within 0.5^ C, the fan switches off, and the message STDBY is displayed;

4.2 USER MENU

Weather and health icons including sun, leaf, clock, crescent, no prohibition sign, lock, water droplet, and heartbeat waveform

		Maintenance menu access key.
		Keys for changing Summer/Winter mode.
		Key for activating/deactivating Economy mode.
		Key for setting and activating/deactivating the time slots.
		Key for accessing the screen for setting and activating/deactivating the ambient antifreeze function.
		Key for enabling/disabling user restrictions mode (password = 66).
		Key for enabling/disabling the keypad lock (password = 99).
		Key for accessing the screen for setting and activating/deactivating dehumidification.
		Key for enabling/disabling the operation of the heating elements. This key is displayed ONLY if heating elements are present.

4.2.1 Time slots menu

13:45 04/12/2019

	Selector switch for activation/deactivation of operation with time slots
	Key for accessing the screen for setting the 3 summer temperatures
	Key for accessing the screen for setting the 3 winter temperatures
	Key for accessing the hourly and daily configuration screens
	Key for accessing the screen for setting the time and date

4.2.2 Programming of time slots

Pressing the key from the time slots menu will take you to the following screen:

— Press the SET keys to set one of the 3 temperature sets in summer mode and winter mode for every hour of every day of the week (from Monday to Sunday).

— Press the COPY keys to copy the summer and winter profile of one day of the week to one or more other days of the week.

Icon set with six labeled UI icons including gear, globe, refresh, question mark, and refresh symbol

Key for returning to the main screen

Key for accessing the configuration parameters list (password = 10) see section p. 8

Key for accessing the regulation parameters list (password = 77) see section p. 9

Key for accessing the network and connections parameters list (password = 20) see section p. 10

Output test screen access key (password = 30)

Information menu access key

Key for resetting default values (password = 15)

4.3.1 Information menu

Mobile app icons with labels for information, data, H2O, progress chart, and MIN/MAX metrics

Key for returning to the main screen

Key for accessing the software version screen

Key for accessing pages of the manual

Key for accessing the water temperature screen

Key for accessing the inputs and outputs display screen

Key for accessing the display screen of graphs of the main values

Key for accessing the display screen of the minimums and maximums of the main values

5.1 CONFIGURATION PARAMETERS LIST

5.1.1 Scroll and modify mode

— to scroll the list, press the OK button at the top right;
— when changing the parameter, the NOT saved value appears orange;
— to save the settings, press the OK button at the top right and the text changes from orange to white.

5.1.2 Table of parameters

ID Description Default Possible value
C1 Unit type 3 speed			3 speed4 speed
C2 Pipes numbers 2 pipes			2 pipes4 pipes
C3 Air probe Display			DisplayBoard
C4	Temperature display	Celsius	CelsiusFahrenheit
C5 Ventilation type	Step		StepModulating
C6 Valve type	Not included		Not includedOn/OffModulating
C7	Summer/Winter switching	From keypad/serial	From keypad/serialFrom digital inputAuto on water temperatureAuto on air temperature
C8	Configuration output 07	No use	(see dedicated paragraph)
C9 Output logic 07	N.A		N.AN.C
C10	Heating elements	No	No/Yes
C11	Water probe present	No	No/Yes
C12	Number of 4-pipe unit water probes	1	1/2
C13	Humidity probe	Display	Display/Board
C14	ECONOMY from contact	No	No/Yes
C15	ON/OFF from contact	No	No/Yes
C16	Dehumidification from contact	No	No/Yes

ID Description Default Possible value
C17	Fan mode in STANDBY	Standard	Always ON, Always OFF, Cyclical switching on
eC18T	Fan speed in STANDBY	Minimum	MinimumMediumMaximum
C19	Natural convection	No	No/Yes
tC20	Status with disconnected serial	Keypad / serial	Keypad / serialFrom supervisor
C21	Language	Italian	Italian, English, French, German, Spanish
C22	Display Stand-by	OFF	OFFClock, Temperature

5.1.3 Configuration constraints

The configuration of the hydronic indoor unit must take the following requirements into account:

— if the heating element is present, the water probe must also be present;
— if the heating element and also the valve are present, the latter must be a 3-WAY valve (NOT A 2-WAY VALVE);
— If the SUMMER/WINTER switchover is set to "Auto on water temp.", the water probe must also be present;
— the heating element cannot be present in the 4-pipe units;
— in 4-pipe units with only one water probe, it is not possible to set summer/winter switcho-ver to "Auto on water temp.";
— summer/winter switchover can be set to "Auto on air temp." only if the heating element is present or if the hydronic indoor unit has a 4-pipe configuration;
— If the SUMMER/WINTER switchover is set to "Auto on water temp.", a 2-way valve cannot be used. The water probe must be installed at a point in the hydraulic circuit with low circulation.

5.1.4 Configurable digital output

The circuit board has a digital output (indicated with O7 in the wiring diagram) whose status can be linked to one of the operating states of the hydronic indoor unit given in the following list:

— Operating mode
— Cooling or heating request
— Cooling request
— Heating request
— Hydronic indoor unit ON/OFF status
— Alarm presence
— Dehumidification call
— Humidification call
— High room temperature
— Low room temperature
— Lack of heating water enabling signal
— Lack of cooling water enabling signal
— From the monitoring software and selectable by means of the configuration parameter "Configuration O7". Moreover it is possible to choose, with the setting of the next

parameter "Digital output logic", whether the relay status should follow the NO (Normally Open) or NC (Normally Closed) logic.

5.1.5 Stand-by mode

After 30 seconds during which no operation is performed on the user interface keypad, the main screen goes into standby mode, and displays the room temperature. Touch the screen at any point to return to the HOME screen.

5.1.6 Interruption in the serial connection

If the serial connection is interrupted with the controller set as SLAVE, FWTOUCH will maintain the ON/OFF and SUMMER/WINTER mode settings from the monitoring software or restore the last settings from the keypad depending on the selection of the corresponding configuration parameter.

5.2 REGULATION PARAMETERS LIST

ID Description Default
R1 Minimum limit cooling SET 10.0°C
R2 Maximum limit cooling SET 35.0°C
R3 Minimum limit heating SET 5.0°C
R4 Maximum limit heating SET 30.0°C
R5 Minimum limit humidity SET 35%
R6 Maximum limit humidity SET	75%
R7 Hysteresis humidity	5%
R8 Offset on humidity reading	0%
R9 Modulating fan minimum value	20%
R10	Modulating fan maximum value - Cooling	100%
R11	Modulating fan maximum value - Heating	100%
R12	Air probe offset	0.0°C
R13	Water probe offset	0.0°C
R14	Water probe offset, heating	0.0°C
R15	Air stratification offset	0.0°C
R16	Hysteresis Economy	0.0°C
R17	Cooling water enabling signal SET-POINT	17.0°C
R18	Cooling water enabling signal hysteresis	5.0°C
R19	Heating water enabling signal SET-POINT	37.0°C
R20	Heating water enabling signal hysteresis	7.0°C
R21	Dehumidification water enabling signal SET-POINT	10.0°C
R22	Dehumidification water enabling signal hysteresis	2.0°C

ID Description Default
R23	Valve water enabling signal SET-POINT	30°C
R24	Valve water enabling signal hysteresis 5.0°C
R25	Heating element water enabling signal SET-POINT	39.0°C
R26	Heating element water enabling signal hysteresis	2.0°C
R27	Minimum temperature control SET-POINT	9.0°C
R28	Minimum temperature control hysteresis	1.0°C
R29	Neutral zone	5.0°C
R30	% modulating fan in standby	20%
R31	Type of control	Proportional

5.3 NETWORK AND CONNECTIONS PARAMETERS LIST (PASSWORD 20)

ID Description Default Possible value
	SETUP RS485
N1 MST/SLV none			NoneMasterLocal slaveSlave to SPV
N2 Protocol Modbus Modbus
N3 Serial address 0			0-255(MASTER = 0; SLAVE = 1-255)
N4 Speed 9600			12002400480096001920038400
N5 Temperature control from Master Yes			NoYes
	SETUP OC
N7 MST/SLV Master			MasterSlave
N8 Serial address 0			FWTOUCH master:0
			FWTOUCH Slave: 2-255
	Wireless network SETUP
N9 Wi-Fi/BLE enabling (Bluetooth) No			NoYes

6 REGULATION LOGIC

6.1 SUMMER/WINTER SWITCHOVER

Four different and alternative logics are present to select the thermostat operating modes according to the configuration set on the controller:

— Local: chosen by the user with the MODE key
— Distance: depending on the DI1 Digital Input status
— depending on water temperature

17.0° 37.0°

INFO: In the case of water probe alarm, the

mode controller returns to the Local mode temporarily.
— depending on air temperature

graph LR
    A["Start"] --> B["Set - ZN/2"]
    B --> C["Feedback Loop"]
    C --> D["Set + ZN/2"]
    D --> E["Output Temperature"]

Where:

— Set is the air temperature set using the arrows
— ZN is the neutral zone

The thermostat operating mode is indicated on the display by the COOLING and HEATING symbols

6.2 VENTILATION

6.2.1 General issues

The controller can perform two types of fan control:

— step fan control, with a fixed number of selectable speeds (3 or 4);
— modulating fan control, with speeds ranging from 0% to 100%

Which type of control will be used clearly depends on the type of fan (step or modulating) installed in the unit. Step control in turn follows two different logics depending on the type of valve(s) (ON/OFF or modulating).

Summing up, the automatic control logics implemented by the controller (and described in detail below) are the following:

— 3-speed fan control with automatic step regulation and ON/OFF valve (or w/o valve), in cooling and heating modes;
— 4-speed fan control with automatic step regulation and ON/OFF valve (or w/o valve), in summer and winter modes;
— 3-speed fan control with automatic step regulation and modulating valve, in summer and winter modes;
— 4-speed fan control with automatic step regulation and modulating valve, in summer and winter modes;

— modulating fan control with ON/OFF valve, in summer and winter modes;
—modulating fan control with modulating valve.

6.2.2 Natural convection

By enabling the parameter from the configuration menu in units with valve, ventilation in heating mode is shifted by 0.5^ C to permit a natural convection phase.

6.2.3 Step ventilation

Using the UP/DOWN keys it is possible to select the following speeds:

— AUTOMATIC speed: depending on the set temperature and the room air temperature;
— EXTRA-LOW speed: can be selected only if the hydronic indoor unit has 4 speeds;
— MINIMUM speed
— MEDIUM speed
— MAXIMUM speed

AUTOMATIC OPERATION FOR 3-SPEED HYDRONIC INDOOR UNITS AND ON/OFF VALVE(S) OR W/O VALVE(S):

1. MINIMUM speed
2. MEDIUM speed
3. MAXIMUM speed

Cooling:

graph TD
    A["set"] --> B["set+0.5°C"]
    B --> C["set+2°C"]
    C --> D["set+3°C"]
    D --> E["End"]

Heating:

graph TD
    A["set"] --> B["set+0.5℃"]
    B --> C["set+1.5℃"]
    C --> D["set+2℃"]
    D --> E["set+3℃"]
    C --> F["Step 1"]
    C --> G["Step 2"]
    C --> H["Step 3"]

Heating:

graph TD
    A["set-3°C"] --> B["set-2°C"]
    B --> C["set-0.5°C"]
    C --> D["set"]
    style A fill:#f9f,stroke:#333
    style B fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333
    style D fill:#f9f,stroke:#333

AUTOMATIC OPERATION FOR 4-SPEED HYDRONIC INDOOR UNIT AND ON/OFF VALVE(S) OR W/O VALVE(S):

1. MINIMUM speed
2. MEDIUM speed
3. MAXIMUM speed EXTRA-LOW speed

Cooling:

graph TD
    A["set-3°C"] --> B["set-2°C"]
    B --> C["set-1,5°C"]
    C --> D["set-0.5°C"]
    D --> E["set"]
    style A fill:#f9f,stroke:#333
    style B fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333
    style D fill:#f9f,stroke:#333
    style E fill:#f9f,stroke:#333

AUTOMATIC OPERATION FOR 4-SPEED HYDRONIC INDOOR UNIT AND MODULATING VALVE(S):

1. MINIMUM speed
2. MEDIUM speed
3. MAXIMUM speed EXTRA-LOW speed

Cooling:

graph TD
    A["set"] --> B["set+0,5"]
    B --> C["set+1°C"]
    C --> D["set+2°C"]
    D --> E["set+3°C"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#cff,stroke:#333

Heating:

graph TD
    A["set"] --> B["set+0.5°C"]
    B --> C["set+1.5°C"]
    C --> D["set+2°C"]
    D --> E["set+3°C"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#ffc,stroke:#333

Heating:

graph TD
    A["set-3°C"] --> B["set-2°C"]
    B --> C["set-1°C"]
    C --> D["set-0.5°C"]
    D --> E["set"]
    style A fill:#f9f,stroke:#333
    style B fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333
    style D fill:#f9f,stroke:#333
    style E fill:#f9f,stroke:#333
    note right of E "sm"

AUTOMATIC OPERATION FOR 3-SPEED HYDRONIC INDOOR UNIT AND MODULATING VALVE(S)

1. MINIMUM speed

2. MEDIUM speed

3. MAXIMUM speed

Cooling:

6.2.4 Modulating ventilation

As in the case of step control, the modulating fan control logic provides for two possible operating modes:

— AUTOMATIC operation
— FIXED SPEED operation

The operating percentage is selected using the + and - keys; however, setting a ventilation value

lower than the minimum (20%) or higher than the maximum (100%) will activate automatic ventilation.

TABLE WITH MANUAL, AUTO, AND FORCED AUTOMATIC OPERATION FOR 3- OR 4-SPEED HY-DRONIC INDOOR UNIT AND ON/OFF VALVE(S) OR W/O VALVE(S):

HEATING WITH 3-SPEED CONFIGURATIONS

HEATING WITH 4-SPEED CONFIGURATIONS:

6.2.5 Forced speed

The normal fan operating logic (both modulating and non-modulating) will be ignored in particular override situations that may be necessary to ensure correct control of the temperature or the unit operation.

This may occur:

— in the COOLING MODE:

— with on-board air probe and configurations with valve: the minimum speed available will be maintained even once the temperature has been reached

— with on-board air probe and valveless configurations: after every 10 minutes in which the fan remains idle a 2-minute cleaning is carried out at medium speed to enable the air probe to read the room temperature more correctly

— if ventilation in standby is always set to ON, the selected speed is maintained once the temperature setpoint has been reached.

— in the HEATING MODE:

— while the heating element is on: the fan is forced to run at medium speed

—once the heating element has turned off: a 2-minute post-ventilation cycle will be run at medium speed. (NB: this cycle will be completed even if the thermostat is switched off or in the event of a changeover to the cooling mode).

— if ventilation in standby is always set to ON, the selected speed is maintained once the temperature setpoint has been reached.

6.2.6 Fan enabling signal from water probe

Irrespective of the type of fan present (step or modulating), fan operation will be constrained by the system water temperature control. Based on the operating mode, different heating or cooling thresholds will be enabled.

17.0° 22.0°

× 30.0° 37.0°

Upon a call of the thermostat, the absence of the enabling signal will be indicated on the display by the flashing of the symbol representing the active Cooling or Heating mode. The enabling signal is ignored:

— if the water probe is not included or in alarm status because disconnected

— in the cooling mode with 4-pipe configurations

6.3 VALVE

The controller can manage 2- or 3-way valves of the ON/OFF type (i.e. completely open or completely closed) or modulating valves (the degree of valve opening may range between 0% and 100%).

6.3.1 ON/OFF valve

The (2- or 3-way) valve opening is controlled according to the operating set-point and air temperature set-point

Cooling:

On Off set set+0,5°

Heating:

On Off set-0,5° set

6.3.2 Modulating valve

The (2- or 3-way) valve opening is controlled according to the operating set-point and air temperature set-point

The regulation logic for opening conforms to the diagrams below.

Cooling:

HEATING WITH 3-SPEED CONFIGURATIONS

HEATING WITH 4-SPEED CONFIGURATIONS

6.3.3 Valve enabling signal from water probe

The checking of water temperature to enable valve opening is a function that concerns only configurations with 3-way valves and heating element. In such configurations the water temperature will be checked in the following cases:

— Heating with heating element: operating the heating element will force the fan to switch on; it is therefore necessary to prevent excessively cold water from passing through the unit.

× 25.0° 30.0°

— Post-ventilation due to switching off of the heating element: maintained until the set time has elapsed, even if the operating mode is changed. During post-ventilation the water temperature enabling signal will coincide with the one seen for fan operation.

6.4 ELECTRICAL HEATING ELEMENTS

6.4.1 Start up

If the heating element's presence is set in advance from the configuration parameter and its use is enabled by means of a button in the USER MENU, it will be activated on a call from the thermostat according to the room temperature:

On Off set-0,5° set

INFO: Switching it on will force the fan on as well.

6.4.2 Heating element enabling signal from water probe

The enabling signal for the heating element is tied to the water temperature.

The related enabling logic is described below: HEATING

37.0° 39.0° ✓ ×

The enabling signal will not be given if the water probe is either not present or disconnected.

6.5 ECONOMY

The Economy function aims to reduce the noise and power consumption of the hydronic indoor unit (e.g. during night operation). If the Economy function's presence is set in advance from the configuration parameter and its use is enabled by means of a button in the USER MENU, it will correct the set-point by 2.5°C and force the fan to run at the minimum available speed:

— Cooling: set-point + 2.5°C

— Heating: set-point - 2.5°C

6.6 MINIMUM TEMPERATURE CONTROL

If this logic's presence is set in advance from the configuration parameter and its use is enabled by means of a button in the USER MENU, it will prevent, while the thermostat is off, the room temperature from falling below a threshold that can be set on the same enabling screen, by forcing the unit into heating mode for the necessary amount of time.

If the heating element is present, it will be used only if it was previously selected as a resource in the heating mode.

6.6.1 Start up

If this control is selected, the unit will switch on when the room temperature falls below 9^ C:

On 9° 10.0° Off

When the temperature exceeds 10^ C the thermostat will resume its Off status.

INFO: Any OFF command from digital input will disable this logic.

6.7 DEHUMIDIFICATION

The FWTOUCH display shows an internal humidity probe; therefore, it is always possible to enable the dehumidification function.

If the dehumidification function, which can be used only in the cooling mode, is enabled on the dedicated screen that can be accessed from the USER MENU, it will operate the unit in order to reduce the humidity in the room until the set-point that can be set on the same enabling screen is reached.

6.7.1 Logic

The fan will be forced to run at low speed or, if the air temperature is much higher than the set-point, at medium speed:

Vmin Set+0.5° Set+1.5° Vmed

In order to bring the humidity to the set value,

the fan (and valve, if present) will be activated even if the room temperature has already reached the programmed set-point (indicated on the display). Should the room temperature fall too far below this threshold, the logic will be temporarily inhibited.

Inib. Set-2.0° Set-1.5°

6.7.2 Dehumidification enabling signal from water probe

Enabling of the dehumidification function is tied to the water temperature. The related enabling logic is described below:

✓ 10.0° × →

If enabling conditions do not exist, the dehumidification function will be temporarily inhibited. The same will occur in the event that the probe is disconnected.

INFO: Once the target level of humidity is reached or the controller is switched OFF, de-humidification will be disabled.

6.8 ALARMS

The alarms managed by the controller and indicated on the display are as follows:

— Air probe alarm
— Water probe alarm
— Humidity probe alarm
— Minor alarm from ID (caused by closing the ID4 input)
— Serious alarm from ID (caused by closing the ID5 input)
— PLC connection alarm (caused by loss of the connection of the display to the board)

22.5°C - 23.5° + - 45% A + Water probe alarm

7 NETWORKS AND CONNECTIVITY

FWTOUCH offers the possibility to interface in networks of the type:

1. RS485 network with monitoring software. See figure 11.1 p. 144

2. SMALL network: SMALL RS485 network and SMALL power-line communication network

3. MIXED network (Supervisor+ PLC or RS485 + PLC) 11.4 p. 144

7.1 CONNECTION TO MONITORING SYSTEM

Through the RS485 serial port it is possible to connect the FWTOUCH controllers (up to 247 hydronic indoor units) to a management software programme that uses the MODBUS RTU standard as communication protocol with the following features:

— Settable baud rate (default: 9600);
— no parity
— 8 data bits
— 1 stop bit

Within a monitoring network, each FWTOUCH controller behaves like a SLAVE towards the centralised management system that constitutes the MASTER of the (see figure) 11.1 p. 144 network.

Once you have wired the network, you must configure each FWTOUCH controller. Enter the list of network and connection parameters (accessible via the key in the USER MENU) and set the RS485 SETUP parameters as follows:

— MST/SLV = "Slave from SPV"
— Protocol="Modbus"

» Coil status (digital read/write)

Description
1	ON/OFF controller
2	SUMMER/WINTER controller
3	ECONOMY controller
4	ANTIFREEZE ENABLING controller
5	HEATING ELEMENTS ENABLING controller
6	modulating fan MAN/AUTO controller
7	ON/OFF enabling from MASTER
8	ECONOMY enabling from MASTER
9	SUMMER/WINTER enabling from MASTER
10	ANTIFREEZE enabling from MASTER

» Input status (digital read-only)

Description
1	Hydronic indoor unit ON/OFF
2	SUMMER/WINTER

— Serial address = set a value from 1 to 255
— Speed = set according to the needs of the Master, leave the PLC SETUP parameters unchanged (MST/SLV = none).

INFO: for details on the network wiring it is recommended to read the document "RS485 network guidelines", available in the Daikin website's download area.

The functions recognized and managed by the controller as SLAVE are the following:

Code Description
01	coil status reading
02	input status reading
03	holding register reading
04	input register reading
15	coil status multiple writing
16	holding register multiple writing

⚠ WARNING: As a result of the use of different MODBUS protocol standards, the addresses shown in the following tables may differ by one unit.

The following are the available variables:

Description
11	HEATING ELEMENTS enabling from MASTER
12	SET-POINTS enabling from MASTER
13	SET-POINT LIMITS enabling from MASTER
14	FAN SPEED enabling from MASTER
15	KEYPAD LOCK controller
16	HUMIDITY CONTROL enabling signal from MASTER
17	HUMIDITY CONTROL enabling
18	CONFIGURABLE DIGITAL OUTPUT NO7 controller
19	Enable control for TIME SLOTS

Description
3	ECONOMY active
4	ANTIFREEZE active
5	presence of ALARM
6	Room temperature probe alarm
7	Water temperature probe alarm
8	Hot water temperature probe alarm(only if 4-pipe hydronic indoor unit)
9	Ambient humidity probe alarm
10	Number of speeds (3 or 4)
111	Number of pipes (2 or 4)
12	Fan type (STEP/MODULATING)
13	Regulation probe(USER INTERFACE/CIRCUIT BOARD)
14	Presence of heating elements
15	Presence of humidity probe
16	Digital output 1 (01) status
17	Digital output 2 (02) status

Description
18	Digital output 3 (03) status
19	Digital output 4 (04) status
20	Digital output 5 (05) status
21	Digital output 6 (06) status
22	Digital output 7 (07) status
23	Presence of water probe
24	Presence of hot water probe (4-pipe hydronic indoor unit)
25	Dehumidification enabled
26	Open valve
27	Hydronic indoor unit switched off from remote contact
28	(MANUAL/AUTOMATIC) regulation of fan speed
29	Active heating element
30	Presence of valve
31	ECONOMY enabling from contact

» Holding register (internal/analogue read/write)

Description
1	Summer temperature SET-POINT (cooling)
2	Summer temperature SET-POINT minimum limit
3	Summer temperature SET-POINT maximum limit
4	Winter temperature SET-POINT (heating)
5	Winter temperature SET-POINT minimum limit
6	Winter temperature SET-POINT maximum limit
7	Single temperature SET-POINT(if SUM/WIN on water/air temp.)
8	Humidity SET-POINT

Description
9	Minimum limit humidity SET
10	Maximum limit humidity SET
11	Step fan speed:0 = extra-low speed1 = min. speed2 = med. speed3 = max. speed4 = AUTO sp.
12	Modulating fan speed

» Input register (Internal/analogue read-only)

Description
1 Room temperature
2 Ambient humidity
3 Water temperature
4 Hot water temperature (only if 4-pipe hydronic indoor unit)
5	Step fan status:0 = fan stopped1 = extra-low sp.2 = min. speed3 = med. speed4 = max. speed
6 % value of modulating fan
7 % value of analogue output 1

Description
8 % value of analogue output 2
9 % value of analogue output 3
10 Active temperature SET-POINT
11 Summer temperature SET-POINT
12 Winter temperature SET-POINT
13	Single temperature SET-POINT (if SUM/WIN on water/air temp.)
14 Active humidity SET-POINT
15 Valve Type (NO VALVE / ON-OFF / MODULATING)

7.2 "SMALL" NETWORK SOLUTIONS

The "SMALL" network solutions constitute a Master/Slave network system in which one of the controllers FWTOUCH carries out the function of MASTER while all the other network controllers FWTOUCH carry out the function of SLAVE. There are two possibilities of implementation, each with different functions and type of connection:

— SMALL network on RS485

— SMALL network on POWER-LINE COMMUNICATION

7.2.1 SMALL network on RS485

In this case the connection is made via an RS485 bus, consisting of a twisted and shielded 2-conductor data cable. See 11.2 p. 144

INFO: For details on the network wiring it is recommended to read the document "RS485 network guidelines", available in the Daikin website's download area.

The MASTER controller sends the following settings to the SLAVE controllers:

— Operating mode: (Cooling or heating);

— ON/OFF status of the controller: all SLAVE controllers will conform to the ON/OFF status of the MASTER controller;

— Enabling minimum room temperature control;

— Room temperature SET-POINT;

or (according to the "Temperature control from MASTER" parameter in the "Networks and Connections" menu):

— Limits for adjusting the room temperature SET-POINT (in both SUMMER and WINTER modes): on each SLAVE controller the SET-POINT can be adjusted by ±2^ C around the SET-POINT value programmed on the MASTER controller.

As regards the ON/OFF status, on each SLAVE controller the following is allowed:

— automatic local ON, in the event of a request from the minimum room temperature control function

— Automatic local ON/OFF according to the time slots, where enabled;

— OFF on SLAVE controller from digital input is enabled.

Each SLAVE controller retains autonomy with respect to fan speed, activation of the ECONOMY function and selection of the SETPOINT (within the above-described limits).

This type of network does not allow the presence also of a monitoring network because the RS485 serial ports of all controllers (both MASTER and SLAVE) are already occupied due to the implementation of the SMALL network.

Once you have wired the network, you must -configure each FWTOUCH controller. Enter the list of network and connection parameters (accessible via the key in the USER MENU) and set the RS485 SETUP parameters as follows:

— MST/SLV = set "Master" on the FWTOUCH controller that constitutes the MASTER of the network, and set "Local Slave" on all FW-TOUCH controllers that constitute the SLAVES of the network.

— Protocol="Modbus"

— Serial address = set a value from 1 to 255 only in the SLAVE controllers.

— Speed = do not change (9600)

Leave the PLC set-up parameters unchanged (MST/SLV = none).

7.2.2 SMALL network on power-line communication

This type of configuration makes it possible to control up to a maximum of 32 hydronic indoor units via a single user interface.

The connection is made via a PLC bus, consisting of a twisted and shielded 2-conductor data cable. See 11.3 p. 144.

The MASTER controller, in this case, imposes on all SLAVE controllers connected to the network an operation (instant by instant) that is identical to that of the MASTER controller itself. Therefore, each SLAVE controller has no decision-making autonomy and does not have its own user interface.

Before connecting the circuit boards to the network, it is necessary to configure each circuit board.

Connect the user interface to each circuit board. Enter the list of network and connection parameters (accessible via the key in the USER MENU) and set the PLC SETUP parameters as follows:

— MST/SLV = set "Master" on the circuit board

that constitutes the MASTER of the network, and set "Slave" on all the SLAVES of the network.

— Serial address = set a value from 2 to 34 on the SLAVE controllers.

At this point it is possible to connect all the circuit boards to the network.

WARNING: once the circuit board is set as SLAVE, it can no longer communicate with

any user interface after the controller is re-started. In this case you need to perform a RESET according to the following procedure: disconnect the circuit board from the network and, while keeping it powered, short-circuit digital input 10 for 15 seconds (terminals I10 and IC).

WARNING: all hydronic indoor units (i.e. both MASTER and SLAVES) connected to the network must have the same configuration.

7.3 MIXED NETWORK

The SMALL network on power-line communication can also be connected to a monitoring network (Supervisor solution or SMALL) on RS485 through the RS485 serial port of the MASTER controller, thus obtaining what is known as a

MIXED NETWORK. Figure 11.4 p. 144 shows a diagram of the mixed network consisting of SMALL network on POWER-LINE COMMUNICATION combined with a monitoring network.

» Summary table of parameters

RS485 Supervisor BMS SMALL RS485			SMALL OC	Mixed Network
MST/SLV Slave to SPV		FWTOUCH Master: Master	-	FWTOUCH Master: Master
		FWTOUCH Slave SLAVE to PSV	-	FWTOUCH Slave SLAVE to PSV
Protocol Modbus Modbus - Modbus
Serial address 1...255		FWTOUCH Master:0	-	FWTOUCH Master:0
		FWTOUCH Slave: 1...255	-	FWTOUCH Slave: 1...255
Speed	According to the Master	9600	-	9600

OC
MST/SLV	-	-	FWTOUCH Master: MasterMaster FWTOUCH: Slave
Serial Address	-	-	FWTOUCH Master: 0FWTOUCH Master: 2...255

8 MEANING OF LED

	Blue Green Red
LED status	Hydronic indoor unit off	Hydronic indoor unit on	Presence of alarm
Network LED PLC Master	Communication ok		Absence of communication

INFO: Looking at the power board from the front, the NETWORK LED is on the left and the STATUS LED is on the right.

9 TECHNICAL SPECIFICATIONS

Power supply	230Vac 50/60Hz
Operating temperature	Electrical input 2.5 W
Storage temperature	Range 0-50☒
No. IP protection rating	Range -10 to 60°C
Circuit board type	IP30 (user interface)
Output relays	Type 1.C
Inputs	NO 5A @ 240V (Resistive)Max ambient temperature 105°CMicro-interruption
Temperature probes	NTC temperature sensorsActive probes 0-5 VVoltage-free contacts (digital inputs)

Humidity probe	NTC sensors 10K Ohm @25°C Range -25 to 100☒
Max. cable cross-section for terminals	1,5 mm ^2
Pollution rating	Class II
Heat/fire resistance category	Category D
Overvoltage category	Category II
EMC compliance standards	EN 61000-6-1(2007)EN 61000-6-3(2007) + A1(2011)
SAF Standards	EN 60730-2-9:2010EN 60730-1:2000 + A1:2004 + A2:2008 + A12:2003 + A13:2004 + A14:2005 + A16:2007

10 INSTALLATION AND MAINTENANCE

⚠ WARNING unit installation and start-up must be entrusted to competent personnel and performed in a workmanlike manner, in accordance with current regulations.
For each unit an (IL) switch should be mounted on the power supply, with opening contacts at a distance of at least 3 mm and a suitable protection fuse (F).
⚠ WARNING Install the unit, circuit breaker (IL) and/or any remote controls in a place out of reach of persons who may be taking a bath or shower.
WARNING the EMC filters connected to frequency converters (inverters) can create leakage currents toward ground (in order to make the unit EMC compliant, by reducing conducted emissions on power supply line). Depending on installation site, this can force

the cut out of the differential safety switch. It is recommended to install a separate differential safety switch, only for the BLDC unit, with an adjustable threshold for the cut out current.

IMPORTANT: Maintenance operations must be carried out only by a service centre authorised by the manufacturer or by qualified personnel. For safety reasons, before carrying out any maintenance or cleaning operations, turn off the unit by moving the electronic control to "OFF" and turning off the main switch (0 position).

The installation procedures for the user interface, the circuit board, and the probes are described below, with specific instructions for the individual hydronic indoor units of the Daikin range.

10.1 INSTALLATION OF THE PROBES

The FWTOUCH controller manages the following probes:

— Air temperature probe integrated in the user interface; no special installation operation is required.
— Probe (optional and alternative to the previous one) connected to the circuit board for reading the temperature of the air drawn in by the unit or at any other point in the environment subject to temperature regulation (REMOTE AIR PROBE).

— Probes (optional) for reading the water temperature: it is possible to connect one or two probes depending on whether the unit is connected to a 2- or 4-pipe system.
— Probe (optional) for reading the ambient relative humidity linked to the circuit board

⚠️ IMPORTANT To prevent disturbance and consequent malfunctions, make sure that the probe cables are NOT situated in proximity to power lines (230V).

10.2 INSTALLATION OF THE REMOTE AIR PROBE

The use of the remote air probe for regulating the room temperature is optional. When used, it becomes the main regulation probe in place of the probe located in the user interface. In any case it is always possible to choose the main room temperature regulation probe by means of the "air probe" parameter contained in the CONFIGURATION MENU.

The remote air probe must always be connected to terminals L1-IC of the circuit board.

FWV/L/M-D & FWZ/R/S-A

Use the plastic adhesive probe holder provided:

— Fan coil unit without support base (11.5 p. 145)
— Fan coil unit with support base (11.6 p. 145)
— Fan coil unit with front intake (11.7 p. 145)

10.3 INSTALLATION OF THE WATER PROBE

The water temperature probe (white cable) is an optional accessory.

In the case of 2-pipe hydronic indoor units (single coil), the water probe must be connected to terminals L2 - IC of the circuit board.

In the case of 4-pipe hydronic indoor units, it is possible to choose (using the "Number of water probes" parameter in the CONFIGURATION MENU) how many probes (one or two) to use.

If you choose to use a water probe, it must be installed in such a way as to read the temperature of the heating water (i.e. installed on the hot water coil) and connected to terminals L2 - IC of the circuit board.

If instead you choose to use two water probes, the probe for reading the cold water temperature must be connected to terminals L2 - IC of the circuit board, and the probe for reading the hot water temperature must be connected to terminals L3-IC of the circuit board.

FWV/L/M-D & FWZ/R/S-A

Use the special copper holder for the water probe and position it as described below, depending on the type of installation.

Fan coil units for:

— 2-PIPE system - W/O VALVE or WITH 2-WAY VALVE: the water probe must be positioned on the heat exchanger (Fig.11.8);

— 4-PIPE system - W/O VALVE or WITH 2-WAY VALVES: the water probe (if one only) must be positioned on the heating circuit's heat exchanger (11.9 p. 146); the second probe, if any, must be positioned on the cooling circuit's heat exchanger;

— 2-PIPE system - WITH 3-WAY VALVE: the water probe must be positioned at the valve inlet, on the branch coming from the system

(11.10 p. 146);

— 4-PIPE system - WITH 3-WAY VALVES: the water probe (if one only) must be positioned at the heating valve inlet, on the branch coming from the circuit (11.11 p. 146); the second probe, if any, must be positioned at the cooling valve inlet on the branch coming from the circuit.

FWD-A/FWN-A

Example, valves mounted on the left side (11.12 p. 146):

— In the case of valveless FWD-A/FWN-A hydronic indoor units, for two-pipe systems, the water probe must be positioned on the pipe at the heat exchanger inlet.

— In the case of valveless FWD-A/FWN-A hydronic indoor units, for four-pipe systems, the water probe must be positioned on the pipe at the heating circuit heat exchanger inlet.

FWB-C/FWP-C

Example, valves mounted on the left side (11.13 p. 147):

— In the case of valveless FWB-C/FWP-C hydronic indoor units, for two-pipe systems, the water probe must be positioned on the pipe at the heat exchanger inlet.

— In the case of valveless FWB-C/FWP-C hydronic indoor units, for four-pipe systems, the water probe must be positioned on the pipe at the heating circuit heat exchanger inlet.

10.4 INSTALLATION OF THE USER INTERFACE

Choose an installation site where you will have easy access to the user interface for setting the functions and accurately read the room temperature (at least 1.5 m from floor level). You should avoid:

— positions directly exposed to sunlight — positions exposed to direct currents of warm or cold air
— placing obstacles that impede an accurate temperature reading (drapes or furniture);
— constant presence of steam (kitchens, etc.)
— covering it or recess mounting it on the wall. For wall mounting of the user interface it is advisable to use an electrical box to be installed in a 503 electrical enclosure, behind the controller, to accommodate the cables. Follow the instructions below for installation:

— Remove the locking screw of the user inter-It is recommended to use a data network cable face (11.14 p. 147). consisting of a pair of twisted and shielded con-

— If a 503 electrical enclosure is used, pass theductors. It is also recommended to connect the cables through the slot at the base of the user interface and use the holes provided for fastening (11.14 p. 147). shielding conductor to the (-) terminal both on the side of the user interface and on the circuit board (p. 149 and p. 150).

— Otherwise, drill holes in the wall where you plan to install the user interface, in positions corresponding to the fastening slots on the controller base. Use the user interface base as a drilling template. Pass the cables through the slot at the base and use expansion anchors to secure it to the previously drilled wall (11.15 p. 147).

— Connect the terminal to the user interface. — Close the controller using the locking screw.

The connection between the user interface and the circuit board must be performed using the 2-terminal connectors of the power-line communication found on both devices (see wiring diagram). In the case of connection between circuit boards, there are two connectors: it doesn't matter which connector you connect to.

10.5 ON-BOARD INSTALLATION OF THE CIRCUIT BOARD

On the hydronic indoor units FWV/L/M-D & FWZ/R/S-A and FWD-A/FWN-A, mount the circuit board on the fastening bracket using the 9.5 mm long screws provided (FWV/L/M-D & FWZ/R/S-A-D & FWZ/R/S-A 11.17 p. 148; FWD-A/FWN-A 11.19 p. 148);

— Screw the 3-way terminal block onto the bracket using the 25 mm long screws

provided;

— Mount the bracket on the side of the unit opposite the water inlet/outlet manifolds;
— Make the electrical connections according to the wiring diagram; for the connection between the terminal block of the hydronic indoor unit (CN) and the circuit board use a cable with a 1.5 mm^2 cross-section.

10.6 ELECTRICAL CONNECTIONS

WARNING: All operations must be performed by qualified service personnel in accordance with current laws and regulations. For any electrical work on the unit, refer to the wiring diagrams provided with the hydronic indoor unit.
NOTE It is also suggested to verify that the characteristics of the mains power supply are adequate for the power consumption indicated in the table of electrical data.
IMPORTANT: Before carrying out any operation on electrical parts, make sure the power

supply is disconnected. Check that the mains supply voltage corresponds to the nominal data of the hydronic indoor unit (voltage, number of phases, frequency) shown on the rating plate on the unit. The supply voltage may not undergo fluctuations exceeding ±5% of the rated voltage. The electrical connections must be made in accordance with the wiring diagram provided with the specific hydronic indoor unit and the regulations in force.

10.7 MAINTENANCE

⚠ IMPORTANT Maintenance operations must be carried out only by a service centre authorised by the manufacturer or by qualified personnel. For safety reasons, before performing any maintenance or cleaning operations, switch off the unit.

Cleaning

If it is necessary to clean the control panel (user

interface):

— use a soft cloth;
— never pour liquids onto the unit, as this could cause electrical discharges and damage the internal components;
— never use harsh chemical solvents;
— do not introduce metal parts through the grille of the user interface's plastic casing.

10.8 TROUBLESHOOTING

If the unit to which the FWTOUCH controller is connected is not working properly, before requesting service, perform the checks indicated in the table in the unit's installation, use, and maintenance manual. If the problem cannot be

solved, contact the dealer or service centre.

INFO: For further information on maintenance, cleaning, and troubleshooting, refer to the manual of the unit on which the controller is installed.

PROBLEM SOLUTION
The control panel does not turn on	Check the correct connection to the on-board circuit board (wiring and polarity)
	Check the power supply of the circuit board (STATUS LED on)
	Replace the connection cable to the circuit board
The control panel displays a probe alarm Check that the circuit board is wired correctly
Incorrect reading of water temperature Verify the correct positioning of the probe inside the traps
Incorrect reading of air temperature on the control panel	Check that the airflow through the control panel is not blockedCheck that the control panel is not affected by external heat sourcesAdjust the air probe offset parameter to calibrate the probe
Absence of communication with the monitoring system	Check that the RS485 line is wired correctlyCheck the correct parameter configuration of the SLAVE controllerCheck the correct setting of the communication parameters on the monitoring system
Absence of communication with the MASTER in a SMALL network on RS485	Check that the PLC line is wired correctlyCheck the correct parameter configuration of all network controllers

POWER SUPPLY

L Phase
N Neutral

INPUTS

11 NTC ambient air sensor
12 NTC water sensor
13	NTC hot water sensor (4-pipe hydronic indoor unit)
14 Not used
15 Not used
1C Common input for NTC sensors
+5 Not used
16 Input for remote ON/OFF
17 Input for remote SUM/WIN
18 Input for remote ECONOMY
19 Not used
110 Not used
1C Common input for 16, 17, and 18
SU-SU Humidity probe

OUTPUTS

A1 Brushless fan modulation
A2 Water valve modulation (cold, for 4-pipe hydronic indoor unit)
A3	Hot water valve modulation (only 4-pipe hydronic indoor unit)
CA Common output for 0-10V outputs
01 Extra-low speed
02 Minimum speed
03 Medium Speed
04 Maximum speed
05	Water valve (cold, for 4-pipe hydronic indoor unit)
06	Hot water valve (only 4-pipe hydronic indoor unit) or heating element
C1 Common output for relay outputs 01-06
07 Configurable signalling output
C7 Common output for relay output 07

PORTS (FRONT OF CIRCUIT BOARD)

A/B/GND MODBUS protocol RS485 serial port
+/-	User interface connection or according to circuit board
+/-	User interface connection or according to circuit board

10.10 CONFIGURATION EXAMPLES

» Example 1

DESCRIPTION DEFAULT MODIFIED VALUE
Hydraulic unit type 3 speed -
Pipes numbers 2 pipes -
Air probe Display Display/Board
Temperature display Celsius -
Fan type Step -
Valve configuration	Not included	ON/OFF
Switchover
Summer/Winter	From keypad/serial	-
DOUT configuration	No use	-
Digital output logic	N.A.	-
Heating elements	No	-
Water probe present	No	Yes
Number of 4-pipe hydronic indoor unit water probes	1	-
Humidity probe present	Display Display/Board
Economy activation from digital input	No	-
ON/OFF activation from digital input	No	-
Dehumidification by DIN	No	-
Fan in STANDBY	Standard	Always OFF
Fan speed in standby	Minimum	-
Natural convection	No	-
ON/OFF and SUMMER/WINTER with disconnected serial	From keypad	-
Language	Italian	-
Stand-by mode	OFF	-

» Example 2

DESCRIPTION DEFAULT MODIFIED VALUE
Hydraulic unit type 3 speed -
Pipes numbers 2 pipes -
Air probe Display Display/Board
Temperature display Celsius -
Fan type Step Modulating
Valve configuration	Not included	ON/OFF
Summer/Winter switching	From keypad/serial	-
DOUT configuration	No use	-
Digital output logic	N.A.	-
Heating elements	No	-
Water probe present	No	Yes
Number of 4-pipe hydronic indoor unit water probes	1	2
Humidity probe present	No	-
Economy activation from digital input	Display Display/Board
ON/OFF activation from digital input	No	-
Dehumidification by DIN	No	-
Fan in STANDBY	Standard	Always OFF
Fan speed in standby	Minimum	-
Natural convection	No	-
ON/OFF and SUMMER/WINTER with disconnected serial	From keypad	-
Language	Italian	-
Stand-by mode	OFF	-

» Example 3

DESCRIPTION DEFAULT MODIFIED VALUE
Hydraulic unit type 3 speed -
Pipes numbers 2 pipes 4 pipes
Air probe Display Display/Board
Temperature display Celsius -
Fan type Step -
Valve configuration	Not included	ON/OFF
Summer/Winter switching	From keypad/serial	-
DOUT configuration	No use	-
Digital output logic	N.A.	-
Heating elements	No	-
Water probe present	No	Yes
Number of 4-pipe hydronic indoor unit water probes	1	2
Humidity probe present	Display -
Economy activation from digital input	Display Display/Board
ON/OFF activation from digital input	No	-
Dehumidification by DIN	No	-
Fan in STANDBY	Standard	Always OFF
Fan speed in standby	Minimum	-
Natural convection	No	-
ON/OFF and SUMMER/WINTER with disconnected serial	From keypad	-
Language	Italian	-
Stand-by mode	OFF	-

1 AVVERTENZE GENERALI ...... p. 31

2 CARATTERISTICHE GENERALI ...... p. 31

3 FUNZIONI PRINCIPALI ...... p. 32

4 SCHERMATE E FUNZIONALITÀ ...... p. 33

4.1 INTERFACCIA UTENTE....p.33

Weather and health icons including sun, leaf, clock, crescent moon, no sign, lock, droplet, and heartbeat waveform

13:45 04/12/2019

Icon set with six labeled UI icons including gear, globe, refresh, question mark, and refresh symbol

Mobile app icons with labels for information, data, H2O, progress chart, and MIN/MAX metrics

17.0° 37.0°

17.0° 22.0° ✓ ×

× 30.0° 37.0°

× 25.0° 30.0°

On Off set-0,5° set

37.0° 39.0°

On 9° 10.0° Off

Vmin Set+0.5° Set+1.5° Vmed

Inib. Set-2.0° Set-1.5°

✓ 10.0° ×

FWV/L/M-D & FWZ/R/S-A

FWV/L/M-D & FWZ/R/S-A

Weather and health icons including sun, leaf, clock, crescent, no sign, lock, droplet, and heartbeat

13:45 04/12/2019

Grid of six white icons representing settings, navigation, refresh, and unknown functions on black background

Mobile app icons with labels for information, data, H2O, progress chart, and MIN/MAX metrics

17.0° 37.0°

set set+0.5°C set+1.5°C set+2°C set+3°C 1 2 3

Chauffage:

graph TD
    A["set-3°C"] --> B["set-2°C"]
    B --> C["set-0.5°C"]
    C --> D["set"]
    style A fill:#f9f,stroke:#333
    style B fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333
    style D fill:#f9f,stroke:#333

FONCTIONNEMENT AUTOMATIQUE POUR UNITÉ HY-DRONIQUE À 4 VITESSES ET VANNE(S) ON/OFF (OU ABSENTES):

graph TD
    A["set-3°C"] --> B["set-2°C"]
    B --> C["set-1.5°C"]
    C --> D["set-0.5°C"]
    D --> E["set"]
    style A fill:#f9f,stroke:#333
    style B fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333
    style D fill:#f9f,stroke:#333
    style E fill:#f9f,stroke:#333

FONCTIONNEMENT AUTOMATIQUE POUR UNITÉ HYDRONIQUE À 4 VITESSES ETVANNE(S) MODULANTE(S) :

1. Vitesse MINIMUM

2. Vitesse MINIMUM

3. Vitesse MOYENNE

4. Vitesse MOYENNE

5. Vitesse MAXIMUM

6. Vitesse MAXIMUM

sm. Vitesse superminimum

sm. Vitesse superminimum

FONCTIONNEMENT AUTOMATIQUE POUR UNITÉ HYDRONIQUE À 3 VITESSES ET VANNE(S) MODULANTE(S)

6.2.4 Ventilation modulée

1. Vitesse MINIMUM

CHAUFFAGE AVEC CONFIGURATIONS À 3 VITESSES

17.0° 22.0° ✓ ×

× 30.0° 37.0°

× 25.0° 30.0°

On Off set-0,5° set

37.0° 39.0°

On 9° 10.0° Off

Vmin Set+0.5° Set+1.5° Vmed

Inib. Set-2.0° Set-1.5°

✓ 10.0° × →

FWV/L/M-D & FWZ/R/S-A

FWV/L/M-D & FWZ/R/S-A

Weather and environmental icons including sun, leaf, clock, crescent, prohibition sign, lock, water droplet, and heartbeat waveform

13:45 04/12/2019

Grid of six icons with labels: gear, speedometer, globe, refresh arrow, question mark, and refresh symbol

Mobile app icons with labels for information, data, H2O, and trend analysis functions

17.0° 37.0°

set set+0.5°C set+1.5°C set+2°C set+3°C 1 2 3

Heizen:

Heizen:

graph TD
    A["set-3°C"] --> B["set-2°C"]
    B --> C["set-0.5°C"]
    C --> D["set"]
    style A fill:#f9f,stroke:#333
    style B fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333
    style D fill:#f9f,stroke:#333

graph TD
    A["set-3°C"] --> B["set-2°C"]
    B --> C["set-1.5°C"]
    C --> D["set-0.5°C"]
    D --> E["set"]
    style A fill:#f9f,stroke:#333
    style B fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333
    style D fill:#f9f,stroke:#333
    style E fill:#f9f,stroke:#333

17.0° 22.0° ✓ ×

× 30.0° 37.0°

× 25.0° 30.0°

On Off set-0,5° set

37.0° 39.0°

On 9° 10.0° Off

Vmin Set+0.5° Set+1.5° Vmed

Inib. Set-2.0° Set-1.5° 10.0°

FWV/L/M-D & FWZ/R/S-A

FWV/L/M-D & FWZ/R/S-A

Weather and health icons including sun, leaf, clock, crescent, no prohibition, lock, drop, and waveform

13:45 04/12/2019

Grid of six icons with labels: gear, globe, refresh, question mark, and refresh symbol, arranged in a 2x2 grid.

Mobile app icons with labels for information, H2O, data analytics, and MAX metrics

17.0° 37.0°

17.0° 22.0° × 30.0° 37.0°

× 25.0° 30.0°

On Off set-0,5° set

37.0° 39.0°

On 9° 10.0° Off

Vmin Set+0.5° Set+1.5° Vmed

Inib. Set-2.0° Set-1.5°

✓ 10.0° × →

FWV/L/M-D & FWZ/R/S-A

FWV/L/M-D & FWZ/R/S-A

Technical line drawing of a mechanical component with internal channels and mounting holes (no text or symbols)

» 7

Technical line drawing of a mechanical assembly with no visible text or symbols

»6

Technical line drawing of a mechanical assembly with an arrow indicating direction (no text or symbols present)

» 8

Technical line drawing of a mechanical component with internal helical structures and mounting holes (no text or symbols)

Technical line drawing of a mechanical device with an arrow indicating a component (no text or symbols present)

» 11

> 10

> 12 AIR 4 pipes 2 pipes AIR

Technical line drawing of a mechanical device with internal piping and housing (no text or symbols)

>15 94.8 83.5 64 31.78 R2 9 17.51 5.75 5.4 31.78 68.57 28.86 37.51

Exploded view diagram of a device showing internal components and mounting holes (no text or symbols)

Technical line drawing of a mechanical device with internal components and mounting bracket (no text or symbols)

Technical line drawing of a rectangular industrial machine with cylindrical components and mounting bracket (no text or symbols)

Technical line drawing of a rectangular electronic device with mounting holes and internal components (no text or symbols)

Technical line drawing of an electronic device housing with internal components and mounting brackets (no text or symbols)

» Schema elettrico generico EVO-2-TOUCH motore AC/EVO-2-TOUCH AC motor general wiring diagram/Schéma électrique general EVO-2-TOUCH AC moteur/Schaltplan generisch EVO-2-TOUCH AC Motor/Esquema eléctrico general EVO-2-TOUCH motor CA

SN SH SNH I1 I2 I3 I4 I5 IC +5 I6 I7 I8 I9 I10 IC IC SU SU R1 R2 R3 CA + - + - B A GND PS485 L H CON AC MOTOR RNG22 or 2 x 0,5 + SHIELD DISPLAY 230V L 50Hz CONF/UPPRILE OUTPUT

... Collegamenti elettrici a cura dell'installatore/... Wirings made by supplier/... Branchements électriques incombant à l'installateur/... Stromanschlüsse seitens des Kunden/... Conexiones eléctricas a cargo del instalador

N: Neutro/ N: Neutral/ N: Neutre/ N: Neutral/ N: Neutro

L: Fase/ L: Phase/ L: Phase/ L: Phase/ L: Fase

F: Fusibile/ F: Fusible/ F: Fusible/ F: Sicherung/ F: Fusible

COM: Comune/ COM: Common/ COM: Commun/ COM: Gemeinsam/ COM: Común

CN: Morsettiera/ CN: Terminal board / CN: Bornier/ CN: Klemmenbrett/ CN: Caja de bornes

V4: Velocità massima motore/V4: Motor maximum speed /V4: Maximum vitesse moteur/V4: Höchstgeschwindigkeit/V4: Velocidad máxima motor

V3: Velocità media motore/V3: Motor medium speed/V3: Moteur medium vitesse /

V3: Mittlere Geschwindigkeit/V3: Velocidad media motor

V2: Velocità minima rotore/V2: Motor minimum speed/V2: Moteur minimum vitesse/V2: Mindestgeschwindigkeit/V2: Velocidad minima motor

V1: Velocità superminima motore/V1: Motor superminimum speed/V1: Moteur super minimum vitesse/V1: Super-Mindestgeschwindigkeit/V1: Velocidad sumamente baja motor

SUM/WIN: Contatto pulito per ESTATE/INVERNO remoto/SUM/WIN: No-voltage contact for remote SUMMER/WINTER/SUM/WIN: Contact libre pour ÉTÉ/HIVER à distance/ SUM/WIN: Potentialfreier Kontakt für Fern-SOMMER / WINTER/ SUM/WIN: Concto libre para VERANO/INVERNO remoto

ECONOMY: Contatto pulito per ECONOMY remoto/ECONOMY: No-voltage contact for remote ECONOMY/ECONOMY: Contact libre pour ECONOMY à distance/ECONOMYPotential/freier Kontakt für Fern-ECONOMY/ECONOMY: Contacto libre para ECONOMY remoto

FAN 0/10V: Ventilatore modulante 0/10V

/FAN 0/10V: Modulating fan 0/10V

N: Neutro/ N: Neutral/ N: Neutre/ N: Neutral/ N: Neutro

L: Fase/L: Phase/L: Phase/L: Phase/L: Fase

F: Fusibile/ F: Fusible/ F: Fusible/ F: Sicherung/ F: Fusible

COM: Comune/ COM: Common/ COM: Commun/ COM: Gemeinsam/ COM: Común

CN: Morsettiera/ CN: Terminal board / CN: Bornier/ CN: Klemmenbrett/ CN: Caja de bornes

SUM/WIN: Contatto pulito per ESTATE/INVERNO remoto/SUM/WIN: No voltage contact for remote SUMMER/WINTER/SUM/WIN: Contact libre pour ÉTÉ/HIVER à distance/ SUM/WIN: Potentialfreier Kontakt für Fern-SOMMER / WINTER/ SUM/WIN: Concto libre para VERANO/INVERNO remoto

ECONOMY: Contatto pulito per ECONOMY remoto/ECONOMY: No-voltage contact for remote ECONOMY/ECONOMY: Contact libre pour ECONOMY à distance/ECONOMYPotentialfreier Kontakt für Fern-ECONOMY/ECONOMY: Contacto libre para ECONOMY remoto

FAN 0/10V: Ventilatore modulante 0/10V

/FAN 0/10V: Modulating fan 0/10V