PAW Domestic User manual

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Domestic hot water controller FC3.8
6 (8) inputs, 4 outputs (3 relays, 1 potential-free switch output)
99B138120x-mub-en | V05 | 2014/11 | Subject to change due to technical improvements!
EN
Installation and Operation Instructions

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Content
General safety instructions ......................................3
EC declaration of conformity....................................3
1 Proper usage..............................................................4
2 About this manual .....................................................4
2.1 Contents ..................................................................... 4
2.2 Target audience.......................................................... 4
3 Installation..................................................................5
3.1 Opening/closing the casing ........................................ 5
3.2 Mounting the casing ................................................... 6
3.3 Establishing the electrical connections....................... 7
3.4 Terminal pin assignments..........................................11
4 Commissioningthedeviceforthersttime.........13
5 Design.......................................................................14
5.1 Housing .................................................................... 14
5.2 Display...................................................................... 14
6 Operation..................................................................17
6.1 Operating buttons..................................................... 17
6.2 Display when operating ............................................ 17
7 Modes of operation..................................................17
7.1 Changing the mode of operation .............................. 17
7.2 Off mode................................................................... 18
7.3 Manual mode............................................................ 19
7.4 Automatic mode ....................................................... 21
8 Settings menu..........................................................22
8.1 Overview .................................................................. 22
8.2 Calling up the settings menu and selecting a
menu entry ............................................................... 24
8.3 Setting the time ........................................................ 24
8.4 Setting the functions................................................. 24
8.5 Set nominal temperature of the domestic hot water. 24
8.6 Switch on thermal disinfection.................................. 25
8.7 Reset to factory settings........................................... 25
8.8 Adjust hydraulic variant ............................................ 26
9 Functions..................................................................26
9.1 General information on operating the functions ....... 26
9.2 Function descriptions ............................................... 28
9.3 Alarm output ............................................................. 38
9.4 Emergency operation ............................................... 38
10 Deinsallation and disposal .....................................38
11 Information messages.............................................38

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General safety instructions
• This document is part of the product.
• Use the device only after reading and understanding this document.
• Keep this document in a safe place for the entire service life of the device.
Pass this document on to subsequent owners and operators of the device.
• Adhere to all safety instructions. Consult (further) professional personnel in the event
of any ambiguities.
• Themeasuresdescribedinthisdocumentmayonlybeperformedbyqualiedtechni-
cal professionals. Exception: End-customers may operate the device when they have
previously been trained by a technical professional.
• 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 casing is open or damaged.
– cables are damaged.
• Factory labels and markings must never be altered, removed or rendered unreadable.
• Observe the prescribed conditions of use, see section: Technical data.
• This device is not intended for:
– Children
– Persons with physical, sensory or mental impairment
– Personswithoutsufcientexperienceorknowledgeunlesstheyareinstructedin
the use of the device, and initially supervised, by a person responsible for their
safety.
EC Declaration of Conformity
This product conforms to the applicable European directives with regard to its design and
itsoperatingbehaviour.Thisconformityhasbeenveried.
Further information in this regard can be obtained from your dealer.
12 Information messages.............................................39
12.1 General faults ........................................................... 40
12.2 Fault messages ........................................................ 41
12.3 Fault at sensor.......................................................... 42
12.4 Checking the Pt1000 temperature sensors .............. 43
12.5 CheckingtheVFS2-40owsensor ......................... 44
12.6 CheckingtheFlowSonicowsensor........................ 45
13 Technical data ..........................................................45
13.1 Cablespecications ................................................. 47
Exclusion of liability................................................47
Legal guarantee .......................................................47

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1 Proper usage
The domestic hot water controller, subsequently referred to as the controller, is an
independently installed electronic temperature controller for on-surface installation.
Theintegrationintoapumpassemblyispossiblewhenthetechnicalspecicationsofthe
controller are adhered to.
The maintenance-free controller is exclusively intended for the controlling and monitoring
of the domestic hot water module Friwa. Only use original accessories for the controller.
2 About this manual
2.1 Contents
This manual contains all information required by a technical professional for setting up and
operating the domestic hot water controller.
2.2 Target audience
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 stations.
• have the necessary training, knowledge and experience, and knowledge of the
applicable regulations in order to evaluate and recognise the dangers inherent in the
following work:
– Installation of electrical equipment
– Production and connection of data communication cables
– Production and connection of mains grid power supply cables

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3 Installation
Note
The following section describes only the installation of the controller. Follow the instruc-
tions of each respective manufacturer when installing external components (valves etc.)
3.1 Opening/closing the casing
3.1.1 Removing the front panel
XGrasp the front panel by the grooves at the sides and pull forwards (Fig. 1).
Fig 1: Removing the front panel
3.1.2 Mounting the front panel
XCarefully position the front panel and then press it onto the casing until it latches
into place.
3.1.3 Removing the terminal cover
Danger
Risk of death by electrocution!
• Disconnect the controller from the power supply before removing the terminal cover.
• Make sure that the power supply cannot be unintentionally switched on when the
device is open.
1. Remove the screw (Fig. 1).
2. Remove the terminal cover .
3.1.4 Mounting the terminal cover
1. Position the cover .
2. Tighten the screw to a torque of 0.5 Nm.

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3.2 Mounting the casing
Thecontrollerisrmlyattached.Onlyobservethischapterincaseofservicing(changeof
the controller).
√The mounting location must satisfy the prescribed conditions of use; more information
on this is provided in the Technical data section.
√The mounting surface is vertical and allows good access for installation.
Danger
Risk of death by electrocution!
• Disconnect the controller from the power supply before opening the casing.
• Make sure that the power supply cannot be unintentionally switched on when the
casing is open.
• Do not use the casing as a drilling template.
1. If necessary, remove the terminal cover.
2. Screw in the screw for the upper mounting hole (Fig. 2) until the screw head has a
clearance of 5 ... 7 mm from the mounting surface.
3. Hang the controller on the screw by the upper mounting hole and align it vertically.
4. Mark the position of the lower mounting hole through the casing.
5. Remove the controller and prepare the mounting hole for the lower screw.
6. Hang the controller by the upper mounting hole and then fasten the screw in the
lower mounting hole .
7. Mount the terminal cover.
Fig 2: Rear side of the controller with the upper and lower mounting holes 

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3.3 Establishing the electrical connections
Danger
Riskofdeathbyelectrocution!Makesurethatthefollowingconditionsaresatised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specications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.
Caution
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.
Note
• Any connection polarity may be used for the 1– 4and RSsignal 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.

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3.3.1 Position of the connection terminals
R3
E1
E2
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Fig 3: Terminal clamps in the lower part of the controller (terminal cover removed)
Power connection terminal block:
L1x phase conductor (mains input)
R1, R2 2x output (TRIAC, for pumps or valves)
R3 1x output (relay, for pumps or valves)
Lconst. 2x phase conductor (outputs, permanent voltage)
N4x neutral conductor (common neutral conductors for mains power input
and outputs)
Note
The outputs R1 and R2 are protected by an electronic fuse.
Protective conductor terminal block:
PE 4x protective earth
(common protective earth for power connection terminal block)
Signals terminal block:
1–44x sensor input (Pt1000 temperature sensor)
51x communication connection for cascading
RS1x signal output (potential-free relay contact for safety extra-low voltage)
PWM R1
PWM R2
2xcontroloutput(forcontrollinghigh-efciencypumps)
Connection: PWM = brown, = blue
7x ground connection (common ground for sensor inputs and control outputs)
Multi-pin connector, only for internal use, 2x input for PAW FlowSonic (white)
Cable openings on the rear side of the casing
Upper strain relief clamps (2 identical plastic links, each with 2 strain relief clamps,
supplied in the scope of delivery)
Lower strain relief clamps
Cable openings at the bottom of the casing
TTL-/eBUS-interface

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3.3.2 Preparing the cable openings
The cables can be fed through openings in the rear wall of the casing or at the bottom
of the casing. The openings are pre-punched and must be prepared as required before
installation.
Prepare the cable openings in the rear wall of the casing as follows:
1. Break out the cable openings (Fig. 3) using a suitable tool.
2. Deburr the edges.
Prepare the cable openings at the bottom of the casing as follows:
1. Cut the required cable openings (Fig. 3) at the left and right using a suitable knife
and break them out.
2. Deburr the edges.
3.3.3 Connecting the cables
√All cables are voltage-free.
√The cable openings have been prepared.
XObserve the following points when connecting the cables:
• Connect the cable conductors to the correct terminals as described in the following
Terminal pin assignments section.
• Mains input and outputs: First connect PE, then Nand L.
• Strain reliefs:
– First clamp the lower strain relief clamps and then the upper strain relief clamps.
– When using the upper strain relief clamps, use the plastic links as described
below.
– If the opening in the strain relief clamp is too large, e.g. in the case of thin cables,
turn over the strain relief clamping bar (with the bend facing down).
– Only use the strain relief clamps for cables entering the bottom of the casing.
Use external strain relief clamps when feeding cables through the rear of the
casing.
3.3.4 Inserting / removing plastic links
Insert the plastic links as follows:
1. Inserttherightplasticlinkwiththelatchingprotrusionrst(Fig. 4).
2. Press the other side of the plastic link down , until the spring clamp latches into
place.
3. Insert the left plastic link the other way around (latching protrusion to the left, spring
clamp to the right).
Fig 4: Inserting the right plastic link

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Remove the plastic links as follows:
1. Insert a screwdriver under the right plastic link between the casing and the spring
clamp , (Fig. 5).
2. Carefully push the screwdriver to the left . Lever the spring clamp to the right
until the plastic link is free.
3. Pull out the plastic link upwards by hand .
4. Remove the left plastic link accordingly.
Fig 5: Removing the right plastic link

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3.4 Terminal pin assignments
The following tables and wiring diagrams show the assignment of the external compon-
ents (pumps, sensors) to the controller terminal pins for the corresponding variants of the
domestic hot water modules.
3.4.2 FriwaMini
Inputs
Terminal Individual operation mode /
Cascade operation mode
1, Flow temperature, primary (TVL)
2, ---
3, Optional: sensor for tank temperature (TSP)
4, Cold water temperature, secondary (TKW)
E.1, T Domestic hot water temperature, secondary
E.1, V‘ Flow rate, secondary
Outputs
Terminal Individual operation mode Cascade operation mode
R1, N --- Sequence valve
R2, N Return valve (optional) Return valve
(optional, at the master controller)
R3, N --- ---
Lconst., N Primary pump,
Secondary pump (circulation)
Primary pump,
Secondary pump
(circulation, at the master controller)
PWM R1, Primary pump Primary pump
PWM R2, Secondary pump (circulation) Secondary pump
(circulation, at the master controller)
Rs, Rs Alarm Alarm
The active valve R1 is not displayed on the controller display.
E.1
E.11
4
R2 R1
Lconst.
PWM (R)2
Lconst.
PWM (R)1
3

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3.4.4 FriwaMidi / FriwaMaxi / FriwaMega
Inputs
Terminal Individual operation mode /
Cascade operation mode
1, Flow temperature, primary (TVL)
2, Domestic hot water temperature, secondary (TWW)
3, Optional: sensor for tank temperature (TSP)
4, Cold water temperature, secondary (TKW)
E.1, T (Domestic hot water temperature, secondary)
E.1, V‘ Flow rate, secondary
E.2, T (Domestic hot water temperature, secondary)
E.2, V‘ Flow rate, secondary (only FriwaMega)
Outputs
Terminal Individual operation mode Cascade operation mode
R1, N --- Sequence valve
R2, N Return valve (optional) Return valve
(optional, at the master controller)
R3, N Bypass (depending on station) Bypass (depending on station)
Lconst., N Primary pump,
Secondary pump (circulation)*
Primary pump,
Secondary pump
(circulation, at the master controller)*
PWM R1, Primary pump Primary pump
PWM R2, Secondary pump (circulation) Secondary pump
(circulation, at the master controller)
Rs, Rs Alarm Alarm
Caution
* 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 the circulation pump directly has to be supplied by the mains connection. The speed
is controlled via the PWM signal.
The active valve R1 is not displayed on the controller display.
TheactivevalveR3isdisplayedasaashingheatexchangeronthedisplayofthecontroller.
Lconst.
PWM (R)1
R2
1
Lconst.
PWM (R)2
R1
E.1
E.2
4
2
3

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4 Commissioning the device for the rst time
Danger
Risk of death by electrocution! Be sure to perform all the measures listed in the Installation
sectionbeforestartingtherstcommissioning.
Note
• When power is removed for a longer period of time (> 15 min after a long period of
power supply), the time and the date must be reset (following steps 1 – 5).
• Saved functions that are not connected with a time setting remain even after a longer
power outage (> 15 minutes).
The controller is preset at the manufacturer.
You must only set the time and the date (Fig. left).
For the operation observe the section Operation.
Values can be subsequently changed during the guided
congurationprocess.Thefollowingapplies:
• /ESC/navigate block-wise forwards and back-
wards (Fig. left: = forwards; ESC/ = back).
• Navigation (with /ESC/) is always possible after
completing a block.
• Subsequentmodicationofablockisstartedwith
SET.
Commissionthecontrollerforthersttimeasfollows:
Setting the time
1. Apply power to the controller.
– The time 12:00 is displayed.
– 12ashes(Fig.left)
2. Press  to set the hours.
3. Press SET.Theminutesash.
4. Press  to set the minutes.
5. Press SET.
6. Repeat the steps 4 and 5 in order to set the year, the
month and the day.
Note
The daylight saving times switching has to be carried out manually.
Time

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5 Construction
5.1 Casing
No. Element see
section
Operation mode button
(under front panel)
6.1, 7
Operating buttons
, SET, ESC, 
6.1
Display 5.2
Front panel 3.1
Terminal cover 3.3.1 1)
Terminal cover fastening screw –
1) Section 3.3.1 describes the terminals under the
terminal cover.
Fig 6: Front view of the controller
5.2 Display
5.2.1 Overview
error
v
1
2
3
4
Fig 7: Overview of the display areas (all elements visible)
System graphics
Settings menu
Pictograms for functions
Operational and setting values
The display areas are described below.

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5.2.2 System graphical symbols
The following table describes the symbols used in the system graphics (ing.7).
Symbol Description Symbol Description
Pipes Pump, switched on
External heat exchanger Pump, switched off
Domestic water tap Temperature sensor
Storage tank Flow rate sensor
3-wayvalvewithowdirection
5.2.3 Settings menu
The settings menu (ing7)containsthefollowingentries:
Time
Functions Nominal temperature of the domestic hot water
Thermal disinfection Reset to factory defaults
5.2.4 Pictograms for functions
The following table describes the pictograms used for functions (ing.7).
Symbol Description
Manual operation
Pump is speed controlled 1)
Alarm output 1)
Thermal disinfection 1)
1) Symbol is visible while the function/parameter is being edited in the settings menu.

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5.2.5 Operational and setting values
The display of the operational and setting values (ing.7)consistsofthefollowing
elements:
Symbol is displayed when an error occurs.
Symbol for time control of functions. This symbol is displayed when:
• a time restriction/control has been set,
• the status of time restriction/control is displayed,
• thetimerestrictionblocksatemperaturecontrol(symbolashes).
Number of the time window that is currently being set/displayed or within which the
current time lies.
Thetimecontrolofafunctionconsistsof1to3congurabletimewindows.Example:
Time window 1: 06:00 – 08:00
Time window 2: 11:00 – 12:30
Time window 3: 17:00 – 19:00
Additional information:
on, off: switching state/condition on, off
max, min: maximum value, minimum value
Σ: Summedoperationalvaluesincerstcommissioning,cannotbereset
Δ: Summedoperationalvaluesincelastresetto0
Display of:
• Measurements
• Settings
• Error codes
• Additional information, e.g. software version
Physical unit of the value displayed in : °C, K, l/min, %‚ h, kWh, MWh
 

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6 Operation
This section contains general information on operating the controller.
6.1 Operating buttons
The device is operated using the buttons , , SET, ESC and as follows:
• Scrolls up through the menu
• Increases the setting value by 1 step
• Scrolls down through the menu
• Decreases the setting value by 1 step
SET • Selectsasettingtobechanged(settingvalueashes)
• Conrmsasettingvalueorjumpsoneleveldowninthemenu
structure
• Calls up the settings menu (not in manual mode)
ESC • Discards an entered setting
• Jumps up by one operating level
Sets the operating mode
Note
We recommend that you write down all settings that you have changed.
6.2 Display when operating
• Aashingcomponentinthesystemgraphicmeans:Thedisplayedoperationalor
settingvalueappliestotheashingcomponent.
Exception: alwaysashesinmanual mode.
• Displays that are automatically alternately displayed are shown overlapping in the
gures.Example:FigureinthesectionOperation mode Off.
7 Modes of operation
7.1 Changing the mode of operation
Caution
Danger of pump damage if run dry. Only switch the system to manual or automatic
modewhenthesystemislled.
1. Remove the front panel.
2. Press the button for 2 seconds to change the mode of operation.
3. Repeat step 2 if necessary.
4. Mount the front panel.
Off Manual
operation Automatic

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7.2 Off mode
Functioning
• All outputs are switched off (outputs/control outputs without power, relays open).
Caution
The pump cables are under tension, because they are constantly supplied with 230 V.
• OFF and the software version are displayed alternately.
Exampleintheg.below:softwareversionbk 1.2
• Backlighting is red.
• Variantdisplaycanbeselected(seeg.below).
Operation
XPress SET in order to select the display of the preset variant of the domestic hot water
module.
XPress and at the same time and hold them for 2 seconds to display the variant
selection. For further information about the variants see chapter 8.8 Set hydraulic
variant.
Note
The variant must exclusively be changed by professional personnel. If the variant is
changed by somebody else, the correct function of the controller can not be guaranteed.

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7.3 Manual mode
Functioning
• Backlighting is red, spanner symbol ashes.
• The controller outputs (pumps, valves) can be manually switched.
Possible switching states:
0: off
1: on
0% ... 100%: control of the HE pump via PWM (only H1, H2)
A: Automatic operation as per the settings in the settings menu
• Current temperatures and operating hours can be displayed (status display).
• The display of the domestic hot water temperature shows an unequalized value.
• When changing to manual mode all outputs are switched to A, R1 is displayed.
• Typicalapplication:Functionaltest(maintenance),fault-nding.
Operation
You switch the outputs on and off as follows:
1. If necessary, press  to select a different output.
2. Press SET.Theswitchingstateashes.
3. Press  to change the switching state.
4. Press SET to adopt the change.
See inthegurebelow.

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You display the current temperatures and operating hours as follows:
1. Press ESC. The temperature/operating hours are displayed and the associated
componentashes( , display is not illustrated).
2. Press  to select a different component.
3. Press SET to leave the temperature/operating hours display.