Table of Contents Table of Contents General Information....................6 Scope of these instructions..................6 Designated use......................6 Target group....................... 6 Safety instructions......................7 Mounting and installation [specialist]..............8 Installation of the controller..................8 Establishing the electrical connections..............11 Product description and operation................13 View of the controller....................13 Operating buttons / key combination..............
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Table of Contents Service......................... 23 Controller........................24 Hot water........................25 Functions........................26 General settings......................27 10.1 Language........................27 10.2 Date..........................27 10.3 Time..........................27 10.4 Date / time........................27 10.5 Automatic Daylight saving time / Standard time............ 27 10.6 Commissioning*......................27 10.7 Software update......................27 10.8 Display.........................
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Table of Contents Advanced settings...................... 37 16.1 Remote control / write protection................37 16.2 Minimum speed*......................38 Description of function....................39 17.1 Circulation........................39 17.2 Stratification (return stratification)................43 17.3 Modulating hot water temperature................44 17.4 Comfort function......................45 17.5 Disinfection......................... 46 17.6 Alarm relay........................
The domestic hot water controller, subsequently referred to as the controller, is an independently installed electronic temperature controller for on-surface installation. The maintenance-free controller is exclusively intended for the controlling and monitoring of a PAW domestic hot water module. Improper usage of the controller excludes any liability claims.
Safety instructions 2 Safety instructions The installation and commissioning as well as the connection of electrical components require technical knowledge commensurate with a recognised vocational qualification as a fitter for plumbing, heating and air conditioning technology, or a profession requiring a comparable level of knowledge [specialist].
Mounting and installation [specialist] 3 Mounting and installation [specialist] 3.1 Installation of the controller NOTICE The following section describes only the installation of the controller. Follow the instructions of each respective manufacturer when installing external components (valves etc.) Do not put the controller into operation in case of any visible damage. 1.
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Mounting and installation [specialist] WARNING Risk to life and limb due to electric shock! Disconnect the controller from the power supply before opening the body. ► Make sure that the power supply cannot be unintentionally switched on ► when the body is open. Inputs FriwaMini: Terminal Individual operation mode / Cascade operation mode...
Mounting and installation [specialist] 3.2 Establishing the electrical connections WARNING Risk to life and limb due to electric shock! Make sure that the following conditions are satisfied when performing the work described in this section: All cables leading to the controller must be disconnected from the power ►...
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Mounting and installation [specialist] CAUTION Danger of damage and malfunction! Connect only components that do not overload the controller inputs and outputs; more Technical data section. information is provided on the type plate and in the When using a circulation pump, especially with the FriwaMega, the power consumption of the pump connected to the controller must absolutely be observed and it has to be checked whether they are compatible with the controller.
Product description and operation 4 Product description and operation 4.1 View of the controller 4.2 Operating buttons / key combination Button Description Back: goes back to the next higher level or back to the system overview Upwards: navigates upwards in the menu, increases adjustment values Downwards: navigates downwards in the menu, decreases adjustment values Confirm: opens the main menu, goes to the next lower level, confirms set...
Product description and operation Key combination Description Keep buttons Back and Confirm pressed Standby on Keep button Back pressed for 5 s Standby off Keep button Confirm pressed for 30 s Factory settings Software update Keep buttons Upwards and downwards pressed for 5 s (USB flash drive with firmware version connected) 4.3 Display 99E13331xx-mub-en - V09...
Product description and operation 4.4 Symbols Symbol Description Three-way valve with flow direction Check box (activated/deactivated) Disinfection active Error message Manual mode Pump Storage tank Thermometer Heat exchanger Modulating hot water temperature active Water withdrawal point USB record active Write protection for remote control via WiFi module, BMS, Modbus Gateway Modbus communication active SYNC...
Commissioning [specialist] 5 Commissioning [specialist] DANGER Risk to life and limb due to electric shock! Mounting and Be sure to perform all the measures listed in the section ► installation before starting the first commissioning. If the controller is connected for the first time, the message "Please carry out the first start-up" is displayed on the screen.
Commissioning [specialist] 5.3 Date Set the current date. First set the day, the month and finally the year. 5.4 Time Set the current time. First set the hours, then the minutes. 5.5 Automatic Daylight saving time / Standard time Activate/deactivate the automatic daylight saving time / standard time. When the controller is delivered, this item is activated.
Commissioning [specialist] 5.7 Scan Modbus* The identification of the domestic hot water modules which are operated in the cascade mode is made via the Scan Modbus . menu item The dot marks which controller type is searched at the moment. *This submenu appears if the client (ID1) was selected at "Controller type".
Commissioning [specialist] 5.11 Finish without protocol Completes the commissioning without a further saving on an external USB flash drive. The settings made during the commissioning can be changed at any time in the corresponding sub menus. After the commissioning is completed, the controller is ready for use. Parameters Description Adjustment range...
Menu settings 6 Menu settings By pressing the operating button "Confirm" the menu of the controller FC3.10 opens. The menu bar contains multiple submenus in which you can find or modify various settings. The available menu items of the first three levels are shown as a menu tree and will be explained in detail in the following chapters.
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Menu settings *Settings only visible with installer code (see chapter "User code"). 08/2024 99E13331xx-mub-en - V09...
Status 7 Status Status contains submenus which allow to The menu item look through all measured/balance values, temperatures and flow rates at the sensors, relay states, operating times, heat quantity, tap performance as well as error messages. In addition, the current firmware is displayed at the item Controller .
Status Confirm button. In addition, you can reset the data of the periods of time via the 7.2 Reports This menu item displays the occurring errors which the controller diagnosed. If an error occurs, the displays show a symbol, also an error message with information about the error is shown.
Status 7.4 Controller Display of the current software version and the domestic hot water module which was selected during commissioning. 99E13331xx-mub-en - V09 08/2024...
Hot water 8 Hot water In this menu item, you can make the temperature settings for the hot water preparation. Setting options for the following parameters are available: Nominal temperature : the set hot water temperature which is supposed to be reached at the ●...
Functions 9 Functions This menu item contains all selectable functions as well as the corresponding settings. To activate/ Confirm button. Then, the corresponding submenu opens. deactivate the desired functions, press the Confirm button, you can activate/deactivate the functions. By pressing again the In the example, the ticked check box indicates that the Circulation was activated.
General settings 10 General settings In this menu, you can make all basic settings of the controller as well as update/modify settings of the commissioning. The menu is structured as follows: 10.1 Language Set the desired language (see "Commissioning") 10.2 Date Set the current date.
General settings 10.8 Display The submenu contains all settings to adjust the display to your individual needs. Here you can adjust parameters like luminosity, contrast and inversion of colours. In addition to that, you can activate the screen lock. After activating the screen lock, the screen is locked after a determined period and accessing the menu of the controller is only possible after entering the set PIN code.
● Additional instructions are enclosed to the Internet module. The following data can be additionally set in the domestic hot water controller FC3.10: 11.1 Registration The registration is required to retrieve data of the domestic hot water module via the Internet and to make settings.
The domestic hot water module can be connected to the Building Management System (BMS) via the Modbus interface of the FC3.10 controller. In this menu item, the Modbus transfer parameters such as Baudrate, data bits, stop bits, parity etc. can be set.
13 USB The controller has a service interface (USB port) for standard USB flash drives. To connect a USB flash drive, first remove the EPP insulation around the controller. In a second step, unscrew the screw in the lower area and remove the white front panel. The USB port is at the right of the display at the side of the controller.
13.5 Save parameter history This menu item allows to save the parameter history on the USB flash drive. During the saving process, Copying data is displayed, after that Copying completed . the message 13.6 Data logging interval Setting of a data logging interval for the data recording. The log interval defines how regularly data should be recorded on the external storage medium.
13.9 Properties Displays the capacity and the free memory on the USB flash drive. Parameters Description Adjustment range Factory setting Remove data carrier Safe removal of the USB flash drive - Load settings Load the controller settings Save settings Save the controller settings Save alarm history Save the alarm history Save parameter history Save the parameter history...
Automatic/manual mode 14 Automatic/manual mode In this menu item, you can set the operation mode of all used PWM outputs and relays in the controller as well as a sensor simulation. With the sensor simulation, a certain temperature can be set for a sensor in order to simulate this temperature.
User code 15 User code In this menu, you can enter the user code According to the entered code, a different access to the setting area of the controller is possible. Each digit of the four-digit code must be individually entered and confirmed.
A remote control allows a remote monitoring, data logging and setting of parameters of a domestic hot water module even if you are not nearby the module or the controller. All domestic hot water modules based on the FC3.10 controller allow a remote control which can be realised in different ways: BMS connection (Modbus RTU protocol) ●...
Advanced settings 16.2 Minimum speed* In this menu item, you can adapt the minimum speed of the primary pump. The minimum speed is an important setting parameter which is exclusively responsible for the control quality in the low load operation (small withdrawal quantity). This minimally actuated PWM value is meant to guarantee the circulation of the heating water (the smallest flow rate) through the domestic hot water module.
Description of function 17 Description of function 17.1 Circulation By means of a circulation function, the drinking water in the circulation line is heated to the desired nominal temperature. The designated circulation pump is actuated by the controller via the PWM 2 connection. During the first commissioning of the circulation pump, you should specify the following parameters to adapt the operation of the domestic hot water module to the current circulation line: PWM value (0 ...
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Description of function NOTICE An additional external circulation sensor can be defined. This can be useful to minimise the runtimes of the circulation pump or to determine the temperatures of pipes with a bad circulation. The circulation function offers 3 operating modes which can be combined with each other. Temperature control ●...
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Description of function Circulation -> Time control -> Time control settings, Preview, an overview of the defined circulation times is displayed. Operation mode "demand" Is a tap open for a few seconds (max 5 s) and closed, the flow rate sensor detects this tap impulse. If Demand mode is activated, this tap impulse initiates the switch-on of the circulation pump for the determined runtime.
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Description of function Parameters Description Adjustment range Factory setting Circulation active Activate the function On, Off Temperature control Submenu for settings of the On, Off temperature control Switch-on Setting the switch-on 35 ... 75 °C 55 °C temperature temperature ∆T Off ΔT for the determination of the 2 ...
Description of function 17.2 Stratification (return stratification) This function serves to improve the temperature stratification in the storage tank or to avoid a temperature mix. In the return can be considerable temperature differences (for example, with an existing circulation). Therefore, the return is connected to the storage tank via a three-way valve.
Description of function NOTICE Differential mode is activated, the controller uses the sensor input S3 to measure the When the storage tank temperature. The three-way valve has to be installed in such a way that in a currentless state the flow direction is switched towards the colder part of the storage tank. The storage tank sensor has to be installed in the warmer part of the storage tank.
Description of function The temperature is decreased when the flow temperature (T-FL) is lower than the nominal temperature (D.H.W. set temperature) + 5 K. The decreased nominal temperature is dynamically defined as follows: Nominal temperature (new) = nominal temperature – 5 K. After a new withdrawal, the controller starts with the decreased nominal temperature.
Description of function Parameters Description Adjustment range Factory setting Comfort function Activate the function On, Off Pause Pause 1 ... 60 min 10 min ∆T Temperature difference 1 ... 15 K Pump speed Control primary pump 0 ... 100 % 25 % Time control Continuous...
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Description of function It is also possible to start the disinfection manually. When the disinfection starts, the circulation pump is actuated with 100 % speed at the same time and remains switched on for the defined disinfection duration (only when circulation was activated). If the circulation is deactivated, the nominal temperature is overwritten by the disinfection temperature during a withdrawal.
Description of function Parameters Description Adjustment range Factory setting Abort Activate the automatic abortion On, Off Disinfection history History of previous disinfections - 17.6 Alarm relay Alarm relay allows to switch a relay in case of an error. For example, a signal transmitter The function can be connected which reports errors.
Description of function 17.7 Parallel relay Parallel relay makes it possible to switch an additional relay in case of an error. It is The function possible to select what kind of incident causes the relay to be switched. Example:The parallel relay R2 is chosen for the primary pump. Whenever the controller sends a signal to the primary pump, the relay R2 is switched.
Description of function 17.8 Hygienic flush / protection against blocking Hygienic flush / protection against blocking serves to avoid that the circulation pump The function seizes up after a longer downtime. During cascade operation, it also serves to flush the cascade modules in operation which are switched on alternately.
Description of function 17.10 Reheating* If the temperature in the buffer tank is not sufficiently high, a reheat request can be sent to the boiler via a defined relay. If the buffer tank temperature is equal or less than the hot water nominal temperature + 3 K, the relay is switched on.
/ communication cable. For further details, please refer to the separate operation instructions of the MB3.10 (PAW item no. 1339002). In the following illustration you can see an example of a 4-fold cascade. To connect the two-way zone valves (cascade valves), the three-way valve for the improved stratification control in the storage tank (return stratification) as well as the controller via a bus line, follow the steps in chapter 18.1.
Installation of the cascade controller 18.1 Installation During the installation, please observe the instructions in chapter 3.1 and 3.2. WARNING Risk to life and limb due to electric shock! Disconnect the controller from the power supply before opening the body. ►...
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Installation of the cascade controller 1. Remove the white front panel of the controller (1). 2. Then, remove the strain reliefs (2). 3. After that, remove the sensor cables of the VFS/US sensors, of the PWM signal and the temperature sensors from the controller circuit board plug connector (3). 4.
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Installation of the cascade controller Cascade valve (at the left) 3-way valve (at the right) Brown - L (via duo wire end ferrule) Brown - L (via duo wire end ferrule) Black – L (R1) White – L (R2) Blue – N (R1) Blue –...
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Installation of the cascade controller 6. For the first and last participant of the Modbus communication, the jumpers must be placed in position 2 (see upper illustration). Place the jumpers as follows: Number of cascade modules Client Server 1 Server 2 Server 3 Pos.
Installation of the cascade controller If the MB3.10 is meant to be connected as well, plug the jumpers as follows: Number of cascade modules MB3.10 Client Server 1 Server 2 Server 3 Pos. 2 Pos. 1 Pos. 2 Pos. 2 Pos.
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Installation of the cascade controller If the controller was marked as client, the following message is shown. Now, assign the correct controller types to the other modules. If a controller was marked as a server, the menu items of the commissioning are shortened because the main parameters are set via the client.
18.3 Extension of a single controller to a cascade network If you already have a FC3.10 domestic hot water system as a single controller and if you wish to extend it to a cascade network, you first need to enter the installation code, see chapter 15.
Menu settings cascade 19 Menu settings cascade By pressing the Confirm-button, the menu of the FC3.10 controller opens. The menu bar contains multiple submenus in which you can find or modify various settings. The available menu items of the first three levels are shown as a menu tree on the basis of the client and will be explained in detail in the following chapters.
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Menu settings cascade *Settings only visible with installer code (see chapter "User code"). **Settings are visible at the servers. 08/2024 99E13331xx-mub-en - V09...
Submenu Cascade at the client 20 Submenu Cascade at the client The main setting options were already described in the chapters 7-17. The menu item "Modbus Gateway MB3.10" is described in detail in chapter 23 "Connection to Building Management System" Cascade is only visible at the client and contains the following (see 23.2 "Cascade").
Submenu Cascade at the client 20.3 Switchover point OFF* Here you can define the threshold for the minimum flow rate when the active module is switched off and the cascade valve closes. The percentage refers to the maximum flow rate of the active modules. Please note the automatic connection of the switchover points ON and OFF, a modification can impact the control performance.
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Submenu Cascade at the client Parameters Description Adjustment range Factory setting Cascade Overview for the minimum flow rate switchover points when a module is activated or switched Switchover point Threshold for the minimum flow rate 70 ... 100 % 80 % when the next module is activated Switchover point Threshold for the minimum flow rate...
Submenus at the server 21 Submenus at the server At the server, there is only a small number of setting options available after the commissioning. 21.1 Status Measured and balance values are measured and displayed per controller. In addition, you receive information about the error messages, the selected service settings und the installed firmware version.
Functions in the cascade network 22 Functions in the cascade network To use the functions Circulation and Stratification, the modules must be connected as shown in the following illustration: three domestic hot water modules: client (at the left), server 1 (centre) and server 2 (at the right).
Functions in the cascade network The special characteristic of the temperature control at the cascade is the selection of a new sensor which is called T-cold water-cascade . T-cold water-cascade is the highest temperature of the T-CW sensors of all active modules/domestic hot water external sensor can be selected.
1 - sensor 2 . The measured values of the external sensors can be read at connected to the input Menu -> Status >- Measured values -> Sensors . the SV1- FC3.10 controller at 22.3 Comfort function When the comfort function is activated, the heat exchanger of the standby module is maintained in the defined temperature range in the flow line.
Functions in the cascade network 22.5 Alarm relay This function can be set via the client and can be connected via a free output to different modules. This allows to connect the alarm relay which is meant to be activated to the relay 2 of the server 1 (if no three-way valve is active), of the server 2 or the server 3.
23.1 Single domestic hot water module Connection of the controller to BMS The domestic hot water modules with the FC3.10 controller have the great advantage that the Modbus interface already exists at the controller. No additional hardware is required to realise the BMS connection.
Connection to Building Management System If the FC3.10 controller is operated as the physical first / last device in the Modbus network, a termination via a jumper is required. For this, the jumper must be plugged at the right side of the Installation of the cascade controller ") to activate the termination resistance...
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Modbus RTU module MB3.10. Setting of the MB3.10 After the electrical connection, all required settings must be made at the FC3.10 "Client" and not at the Scan Modbus: Menu -> General settings ->...
You will find a complete list of all Modbus registers (ca. 2000) of domestic hot water modules in a separate document which can be downloaded via the website www.paw.eu or is available on demand directly at PAW.
Technical data 24 Technical data General Rated voltage (system voltage) 230 V/AC, 50 Hz Own consumption < 2.5 W Own consumption standby < 1 W Fuse element 6.3 A Outputs Outputs R1, R2 Type Relay Switching current Voltage 230 V/AC, 50 Hz Output R3 Type Relay...
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Technical data Signal outputs Number Frequency 200 Hz Voltage 10 V Current (max.) 10 mA Modbus Number of connections RJ10 Type Internal bus Number of connections RJ12 Type Application conditions Protection category IP20 Protection class Ambient temperature 0 ... 50 °C, in the case of free wall assembly Physical values Dimensions L x W x H 164 x 112 x 55 mm...
Error correction 25 Error correction 25.1 Error messages WARNING Risk of death by electrocution! Immediately disconnect the device from the power supply if it can no longer ► be operated safely, f. ex. in the case of visible damage. Disconnect the device from the power supply before opening the body. ►...
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Error correction Alarm Possible cause Problem solution Damaged sensor 1 - short circuit or failure of the Check sensor for proper connection, sensor in case of defective sensor: exchange Damaged sensor 2 sensor if necessary - damaged sensor Damaged sensor 3 Damaged sensor 4 VFS/US V error VFS/US T error...
Error correction 25.3 Checking the VFS 2-40 flow sensor WARNING Risk to life and limb due to electric shock! Disconnect the controller from the power supply before opening the body. ► All work on the open device may only be carried out by professional ►...
Error correction Signal configuration VFS 2-40 Designation Technical description Cable Temperature signal 0.5 - 3.5 V measured to pin 3 Yellow Flow signal 0.5 - 3.5 V measured to pin 3 White Ground Green Power supply 5 V/DC Brown Pin-assignment flow signal Pin assignment temperature signal 25.4 Checking the FlowSonic flow sensor WARNING...
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Error correction 3. Measure the tension of the flow sensor with a voltmeter and compare it to the following table. Small deviations are acceptable. 4. After the completed measurement, mount the front panel. Assignment tension - flow Voltage [V] 0.35 0.38 0.51 0.66...
Disposal 26 Disposal NOTICE Electrical and electronic devices must not be disposed of in the household waste. For your return, there are free collection points for electrical appliances and, if necessary, additional points of acceptance for the reuse of the devices in your area. The addresses can be obtained from your city or communal administration.
Exclusion of liability 27 Exclusion of liability The manufacturer can neither monitor the compliance with this manual nor the conditions and methods during the installation, operation, usage and maintenance of the controller. Improper installation of the system may result in damage to property and, as a result, to bodily injury. Therefore, the manufacturer assumes no responsibility and liability for loss, damage or costs which result from or are in any way related to incorrect installation, improper operation, incorrect execution of installation work and incorrect usage and maintenance.
Legal guarantee 28 Legal guarantee In accordance with German statutory regulations, there is a 2-year legal guarantee on this product for the customer. The seller will remove all manufacturing and material faults that occur in the product during the guarantee period and affect the correct functioning of the product. Natural wear and tear do not constitute a malfunction.
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Böcklerstraße 11 31789 Hameln, Germany Translation of the original instructions www.paw.eu We reserve the right to make technical changes without notice! Phone: +49-5151-9856-0 Printed in Germany – Copyright by PAW GmbH & Co. KG Fax: +49-5151-9856-98 08/2024 99E13331xx-mub-en - V09...
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