PAW FC3.10 Owner's manual

PAW GmbH & Co. KG
Böcklerstr. 11, 31789 Hameln - Germany
Phone: [phone], Fax: [phone]
E-Mail: [email protected], Web: www.paw.eu
2022/07 99E13331xx-mub-en - V08 1
Installation and Operation Instructions
Controller FC3.10 for DHW modules

1General Information
2 99E13331xx-mub-en - V08 2022/07
Item no. 99E13331xx-mub-en - Version V08 - Issued 2022/07
Translation of the original instructions
We reserve the right to make technical changes without notice!
Printed in Germany – Copyright by PAW GmbH & Co. KG
PAW GmbH & Co. KG
Böcklerstraße 11
31789 Hameln - Germany

1General Information
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Contents
1General Information.........................................................................................................7
1.1 Scope of these instructions ..........................................................................................7
1.2 Designated use ............................................................................................................ 7
1.3 Target group ................................................................................................................ 7
2Safety instructions ...........................................................................................................8
3Mounting and installation [specialist]] ...............................................................................9
3.1 Installation of the controller........................................................................................... 9
3.2 Establishing the electrical connections ....................................................................... 11
4Product description and operation ..................................................................................13
4.1 View of the controller.................................................................................................. 13
4.2 Operating buttons / key combination .......................................................................... 13
4.3 Display ....................................................................................................................... 14
4.4 Symbols ..................................................................................................................... 15
5Commissioning [specialist].............................................................................................15
5.1 Language ................................................................................................................... 16
5.2 Controller type............................................................................................................ 16
5.3 Date ........................................................................................................................... 16
5.4 Time........................................................................................................................... 16
5.5 Automatic Daylight saving time / Standard time.......................................................... 17
5.6 Cascade* ................................................................................................................... 17
5.7 Scan Modbus*............................................................................................................ 17
5.8 Nominal temperature.................................................................................................. 17
5.9 Functions ................................................................................................................... 17
5.10 Finish with protocol .................................................................................................... 17
5.11 Finish without protocol................................................................................................ 18
6Menu settings................................................................................................................19
7Status ...........................................................................................................................22
7.1 Measured and balance values.................................................................................... 22
7.2 Reports ...................................................................................................................... 23

1General Information
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7.3 Service....................................................................................................................... 23
7.4 Controller ................................................................................................................... 23
8Hot water ......................................................................................................................24
9Functions ......................................................................................................................24
10 General settings ............................................................................................................25
10.1 Language ................................................................................................................... 25
10.2 Date ........................................................................................................................... 25
10.3 Time........................................................................................................................... 25
10.4 Synchronise date/time................................................................................................ 25
10.5 Automatic Daylight saving time / Standard time.......................................................... 25
10.6 Commissioning* ......................................................................................................... 26
10.7 Software update ......................................................................................................... 26
10.8 Display ....................................................................................................................... 26
11 Internet module .............................................................................................................27
11.1 Registration................................................................................................................ 27
11.2 Set up the network ..................................................................................................... 28
11.3 Information ................................................................................................................. 28
12 Modbus settings*...........................................................................................................28
13 USB..............................................................................................................................28
13.1 Remove data carrier................................................................................................... 29
13.2 Load settings.............................................................................................................. 29
13.3 Save settings.............................................................................................................. 29
13.4 Save alarm history ..................................................................................................... 29
13.5 Save parameter history .............................................................................................. 29
13.6 Data logging interval................................................................................................... 29
13.7 Recording type ........................................................................................................... 29
13.8 Format data carrier..................................................................................................... 30
13.9 Properties................................................................................................................... 30
14 Automatic/manual mode ................................................................................................30
15 User code .....................................................................................................................32

1General Information
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16 Advanced settings .........................................................................................................32
16.1 Remote control / write protection................................................................................ 32
16.2 Minimum speed* ........................................................................................................ 33
17 Description of function ...................................................................................................33
17.1 Circulation .................................................................................................................. 33
17.2 Stratification (return stratification) ............................................................................... 38
17.3 Modulating hot water temperature.............................................................................. 39
17.4 Comfort function......................................................................................................... 40
17.5 Disinfection ................................................................................................................ 41
17.6 Alarm relay................................................................................................................. 42
17.7 Parallel relay .............................................................................................................. 43
17.8 Hygienic flush / protection against blocking ................................................................ 44
17.9 Buffer tank* ................................................................................................................ 45
17.10 - Reheating* ............................................................................................................... 45
18 Installation of the cascade controller...............................................................................46
18.1 Installation.................................................................................................................. 47
18.2 Initial commissioning of the cascade controller........................................................... 51
18.3 Extension of a single controller to a cascade network ................................................ 53
19 Menu settings cascade ..................................................................................................53
20 Submenu Cascade at the client......................................................................................55
20.1 Cascade switchover points......................................................................................... 55
20.2 Switchover point ON* ................................................................................................. 55
20.3 Switchover point OFF* ............................................................................................... 56
20.4 Switchover delay*....................................................................................................... 56
20.5 Duration of standby module* ...................................................................................... 56
20.6 Synchronise*.............................................................................................................. 56
21 Submenus at the server.................................................................................................57
21.1 Status......................................................................................................................... 57
21.2 General settings ......................................................................................................... 57
21.3 USB ........................................................................................................................... 58
21.4 Automatic / manual mode........................................................................................... 58

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21.5 Advanced settings* .................................................................................................... 58
22 Functions in the cascade network ..................................................................................58
22.1 Circulation .................................................................................................................. 58
22.2 Stratification return ..................................................................................................... 59
22.3 Comfort function......................................................................................................... 60
22.4 Thermal disinfection ................................................................................................... 60
22.5 Alarm relay................................................................................................................. 61
22.6 Parallel relay .............................................................................................................. 61
22.7 Hygienic flush / protection against blocking ................................................................ 61
22.8 Buffer tank.................................................................................................................. 61
22.9 Reheating...................................................................................................................61
23 Connection to Building Management System..................................................................62
23.1 Single domestic hot water module.............................................................................. 62
23.2 Cascade..................................................................................................................... 64
23.3 List of the Modbus registers ....................................................................................... 66
24 Technical data...............................................................................................................66
25 Error correction .............................................................................................................68
25.1 Error messages.......................................................................................................... 68
25.2 Troubleshooting ......................................................................................................... 70
25.3 Checking the VFS 2-40 flow sensor ........................................................................... 73
25.4 Checking the FlowSonic flow sensor .......................................................................... 74
26 Disposal........................................................................................................................76
27 Exclusion of liability .......................................................................................................76
28 Legal guarantee ............................................................................................................77

1General Information
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1General Information
1.1 Scope of these instructions
These instructions describe the function, installation and commissioning of the DHW controller
FC3.10. The chapters called [specialist] are intended for specialists only.
For further components external of the module, such as valves, please follow the instructions of
the respective manufacturer.
1.2 Designated use
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.
Only use PAW accessories with the controller.
The packaging materials are made of recyclable materials and can be disposed of with
recyclable materials.
This product complies with the relevant directives and is therefore labelled with the CE mark.
The Declaration of Conformity is available upon request, please contact the manufacturer.
1.3 Target group
The target audience of this manual are technical professionals who:
•have the knowledge of terminology and the skills necessary for setting up and
operating domestic hot water modules.
•have the necessary professional training, knowledge and experience as well
as the knowledge of the relevant regulations, in order to evaluate the following
work and to detect potential dangers:
– Installation of electrical devices
– Assembly and connection of data lines
– Assembly and connection of power supply lines.
Carefully read these instructions before installation and commissioning.
Save these instructions in the vicinity of the installation for future reference.

2Safety instructions
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2Safety 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].
The following must be observed during installation and commissioning:
•relevant local and national regulations
•accident prevention regulations of the professional association
•instructions and safety instructions mentioned in these instructions
CAUTION
Personal injury and damage to property!
The controller must only be used in domestic hot water modules.
The domestic hot water module can be damaged by improper operation of
the device. The device must not be connected to the mains power supply
when:
the body is open or damaged.
cables are damaged.
This document is part of the product. Install and use the device only after having read
and understood this document. Please observe all safety instructions. Please contact
an additional expert if uncertainties occur.
The measures described in this document may only be carried out by qualified technical
professionals.
Factory labels and markings must never be modified, removed or rendered unreadable.
Observe the prescribed operating conditions. For more information, see the section
Technical data.
This device is not intended for:
•Children
•Persons with restricted physical, sensory or mental capacities
•Persons without sufficient experience or knowledge
unless they are instructed in the use of the device, and initially supervised, by a person
responsible for their safety.

3Mounting and installation [specialist]]
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3Mounting 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. Temperature sensors
S1-S4 (Pt1000)
2. Flow sensors
(VFS/US)
3. Outputs PWM
4. Modbus (RS 485)
5. RS 232
6. Outputs 230 V
7. Supply
8. Position of the jumper
9. Fuse

3Mounting and installation [specialist]]
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WARNING
Risk of death by electrocution!
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
S1, ꞱFlow temperature, primary (T-FL)
S2, ꞱOptional: Storage tank temperature (T-ST), ext. circulation temperature,
ext. stratification temperature
S3, ꞱOptional: Storage tank temperature (T-ST), ext. circulation temperature,
ext. stratification temperature
S4, ꞱCold water temperature, secondary (T-CW)
VFS/US1 Domestic hot water temperature (T-DHW) and flow rate, secondary
Inputs FriwaMidi/Maxi/Mega:
Terminal
Individual operation mode / Cascade operation mode
S1, ꞱFlow temperature, primary (T-FL)
S2, ꞱDomestic hot water temperature, secondary (T-DHW)
S3, ꞱOptional: Storage tank temperature (T-ST), ext. circulation temperature,
ext. stratification temperature
S4, ꞱCold water temperature, secondary (T-CW)
VFS/US1 Flow rate, secondary
VFS/US2 (for FriwaMega): flow rate, secondary

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Outputs:
Terminal
Individual operation
Cascade operation mode
R1 Optional: alarm relay, error relay,
reheating, stratification
Cascade valve
R2 Optional: stratification, alarm relay,
error relay, reheating
Stratification
(Connection at server 1)
R3 Primary- / secondary pump Primary- / secondary pump
PWM1 Primary pump Primary pump
PWM2 Secondary pump (circulation) Secondary pump
(circulation at the client)
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
supply and it must be ensured that they cannot be unintentionally
reconnected during installation.
The protective earth conductors (PE) from the mains cable and pump
and valve cables must be connected to the protective earth conductor
terminal block.
All cables must be laid so that persons cannot stand on them or trip over
them.
The cables must satisfy the requirements listed in the Technical data
section.
The local power supply must match the specifications on the type plate
of the controller.
The power supply cable is to be connected to the mains power as
follows:
-using a plug connected to a wall mains socket or
-via an isolating mechanism allowing complete isolation in the case of
permanent wiring.
The power supply cable must be laid in conformance to all applicable
legal guidelines and regulations of the local electricity supplier.

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ATTENTION
Danger of damage and malfunction!
Connect only components that do not overload the controller inputs and outputs; more
information is provided on the type plate and in the
Technical data section.
NOTICE
Any connection polarity may be used for the 1 – 4 signal inputs and outputs.
Only type Pt1000 temperature sensors may be used.
Lay the sensor cables at least 100 mm away from any power supply cables.
Use shielded sensor cables when inductive sources are present, e.g. high-voltage
lines, radio transmitters, microwave devices.
ATTENTION
Danger of damage and malfunction!
When using a circulation pump, especially with the FriwaMega, the power consumption of the
pumps connected to the controller must absolutely be observed and it has to be checked
whether they are compatible with the controller. In some cases the circulation pump directly
has to be supplied by the mains connection. The speed is controlled via the PWM signal.

4Product description and operation
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4Product 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 values, activates functions
Key combination
Description
Standby on
Back
and
confirm
- keep button pressed
Standby off
Back
- keep button pressed for 5 s
Factory settings
Confirm
- keep button pressed for 30 s
Software update
Upwards
and
downwards
- keep button pressed for 5 s (USB flash
drive with firmware version connected)
USB service
interface (below
the front panel)
Operating buttons
Display with
hydraulic scheme

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4.3 Display
Hot water
temperature (T-
DHW)
Flow temperature
(T-FL)
Flow rate (VFS V)
Speed of the primary
pump (PWM 1)
Cold water
temperature (T-CW)
Speed of the
circulation pump
(PWM 2)
Remaining time of
disinfection
Time with day of
the week

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4.4 Symbols
5Commissioning [specialist]
DANGER
Risk to life and limb due to electric shock!
Be sure to perform all the measures listed in the Mounting and
installation section before starting the first commissioning.
When the controller is connected for the first time, the message " Please carry out the first start-
up" is shown on the display.
After confirming with " Yes ", the commissioning menu is displayed where you can successively
make the desired general settings.
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
Synchronisation of the parameters within the cascade

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5.1 Language
LANGUAGE
Deutsch (DE)
Polski (PL)
English (ENG)
Français (FR)
Set the desired menu language.
5.2 Controller type
CONTROLLER TYPE
Single controller
Client (ID1)
Server 1 (ID2)
Server 2 (ID3)
Set the available type of controller. The menu item Single
controller should be selected if you want to put into
operation only one domestic hot water module.
If you connect multiple domestic hot water modules (2 - 4
modules) hydraulically in parallel, these controllers are
called cascading. The controllers are connected via a
bus line with each other and are called
client or server.
5.3 Date
SET DATE
17 – 03 – 2020
Day
Set the current date. First set the day, the month and
finally the year.
5.4 Time
SET TIME
09 : 16
Hour
Set the current time. First set the hours, then the
minutes.

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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.
5.6 Cascade*
At this menu item, the operating parameters (switchover point, duration of backup mode) of the
domestic hot water modules within a cascade are set.
5.7 Scan Modbus*
SCAN MODBUS
STATUS
Server 1
OK
Server 2
---
Server 3
---
MB3.10
---
The identification of the domestic hot water modules
which are operated in the cascade mode is made via the
menu item
Scan Modbus.
The dot marks which controller type is searched at the
moment.
*This submenu appears if the client (ID1) was selected at "Controller type".
5.8 Nominal temperature
NOMINAL TEMPERATURE
60 °C
MIN : 35
MAX : 75
Setting the desired nominal temperature of the hot water.
5.9 Functions
Activate/deactivate the functions and further, corresponding settings.
When the domestic hot water module is delivered, as well as after a reset to factory settings, all
functions are deactivated apart from
Over temperature switch off .
You will find detailed information on this in chapter 17.
5.10 Finish with protocol
Save the commissioning with creating a protocol. For this, an external memory (USB flash drive)
must be connected to the service interface / USB port. This interface can only be accessed after
removal of the front panel, see chapter 4.1.

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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
Meaning
Adjustment range
Factory setting
Language Selection of the menu
language
German, Polish,
English, French,
Spanish, Italian,
Dutch, Swedish
German
Controller type Setting the type of controller Single controller,
client, server 1,
server 2, server 3,
MB3.10,
deactivated
Single controller
Date Setting the date - -
Time Setting the time - -
Auto. Daylight
saving
time/standard time
Activate the automatic
change to daylight saving
time /standard time
Yes, No Yes
Cascade Operating parameters of the
cascade
- -
Scan Modbus Identification of the modules - -
Nominal
temperature
Setting the hot water
nominal temperature
35 ... 75 °C 60 °C
Functions Submenu of the functions - -
Finish with protocol Save with protocol - -
Finish without
protocol
Save without protocol - -

6Menu settings
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6Menu settings
By pressing the operating button ( ), 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.

6Menu settings
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Menu
Status
Measured/balance values
Reports
Service
Controller
Hot water
Nominal temperature
Minimum temperature*
Maximum temperature*
Functions
Circulation
Stratification return
Modulating hot water temperature
Comfort function
Disinfection
Alarm relay
Parallel relay
Hygienic flush / protection against blocking
Buffer tank*
Reheating*
General settings
Language
Date
Time
Date/time sync.
Auto. Daylight saving time/standard time
Commissioning*
Software update
Display