Automation System 5400
Heating and District Heating Controller
TROVIS 5476
Mounting and
Operating Instructions
EB 5476 EN
Firmware version 2.3x
Edition December 2004
®
Electronics from SAMSON
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Contents
Contents
EB 5476 EN
3
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Contents
4
EB 5476 EN
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Contents
Most frequently used abbreviations . . . . . . . . . . . . . . . . . . 105
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
EB 5476 EN
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Operation
1
Operation
The controller is ready for use with the temperatures and operating schedules preset by the
manufacturer.
1.1 Operating elements
The operating controls are located in the front panel of the controller and protected by a Plexi-
glas door.
1.1.1 Operating keys
– Press to switch between operating level and configuration level and from
configuration level to the parameter level
Reset key
Press to reset accessible parameters to their default settings; the controller
must be in the parameter level
– To scroll within levels
– To change values
– To switch from the parameter level into the configuration level
(press both arrow keys simultaneously)
Enter key
– To access levels
– Access parameters and functions to edit them
– Confirm settings
– Display set points in the info level
6
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Operation
1.1.2 Operating switches
Heating circuit mode selector switch
Automatic mode with switchover between
rated operation and reduced operation or standby mode
Day mode (rated operation)
Night mode (reduced operation) or standby mode
Manual operation: Control valve RK1 open - stationary - closes
UP1 in operation, no reaction in switch position
DHW circuit mode selector switch · Underfloor heating circuit (Anl 9)
Automatic mode with deactivation of DHW heating
Heating circuit(s) deactivated, frost protection only
DHW heating unchanged
Manual operation: Control valve RK2 open - stationary - closes
Correction switch
Correction of flow temperature set point in times-of-use to become warmer (+)
or colder (–)
ΔTFlow max
=
4 °C x Gradient of the heating characteristic ( 10 °C for 4-point
characteristic)
Adaptation operation only when switch position is at 0
EB 5476 EN
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Operation
1.2 Operating modes
Day mode (rated operation)
Regardless of the programmed times-of-use, the set points relevant for rated operation are used
by the controller.
Night mode (reduced operation)
Regardless of the programmed times-of-use, the set points relevant for reduced operation are
used by the controller.
Automatic mode
During the programmed times-of-use, the controller works in rated operation. Outside these
times-of-use, the controller is in reduced operation, unless control operation is deactivated de-
pending on the outdoor temperature. The controller switches automatically between both oper-
ating modes.
Manual operation + 0 –
Valves and pumps can be controlled manually (–> section 3).
The default setting of the circulation pumps (for the heating circuit) is set for constant operation.
8
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Operation
1.3 Display
During operation, the display indicates the current time as well as information about the opera-
tion of the controller. The times-of-use are represented by black squares below the row of num-
bers at the top of the display. Icons indicate the operating status of the controller.
1
16
2
3
4
5
6
7
8
9
10
11
12 13 14
15
1
2
3
Automatic operation
Day mode (rated oper.)
Night mode
(reduced operation)
Vacation mode
Public holiday mode
Malfunction
8
9
Heating pump UP
Heating demand
14 DHW exchanger charging
pump TLP, Anl 9: UP2
15 DHW valve:
10 Heating valve: OPEN,
CLOSED
11 Storage tank charging
pump SLP
12 Solar circuit pump CP
13 DHW demand
OPEN, CLOSED,
Anl 9: Mixer for underfloor
heating circuit
4
5
6
7
16 Times-of-use
Frost protection
Fig. 1 · Icons
The controller status can be displayed in the operating level (–> section 1.4).
EB 5476 EN
9
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Operation
1.4 Displaying data
Measured values, set points, times-of-use, public holidays and vacation periods as well as tem-
peratures of the connected sensors and their set points can be retrieved and displayed in the op-
erating level.
Proceed as follows:
Select value.
The various datapoints appear one after the other on the display depending on the con-
Outdoor temperature
Temperature at flow sensor VF in heating circuit 1, 2
Temperature at return flow sensor RüF1
Room temperature
Temperature at flow sensor VF1 while DHW is active
Temperature at flow sensor in DHW circuit VF2 – VF3
Temperature at DHW sensor VF2
Temperature at storage tank sensors SF1–SF2
Temperature at return flow sensor in DHW circuit RüF2
Temperature at solar collector sensor CF
Time schedule for heating
,
Time schedule for DHW circuit
Public holidays
Vacation periods
Compare the set point or limit with the actual measured temperature.
By pressing the enter key when the time appears on the display, a status alarm of the
system bus interface appears when the Modbus operation is active.
If the system bus interface is not used accordingly, PAUSE appears on the display.
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Operation
1.5 Setting the controller time
The current time and date need to be set immediately after start-up and after a power failure
lasting longer than 24 hours.
The time is set in the parameter level.
Proceed as follows:
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Switch to the parameter level.
Display: Time, blinks
Activate editing mode for the controller time.
blinks.
Change controller time.
1
Confirm controller time.
Display: Date (day.month)
Change date setting.
Confirm date.
Display: Year.
Change year setting.
Confirm year.
Return to the operating level.
Note!
The controller automatically returns to the operating level if the keys are left unpressed for five
minutes.
EB 5476 EN 11
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Operation
1.6 Setting the times-of-use
Two times-of-use can be set for each day of the week. If only one time-of-use is required, the
start and stop times of the second time-of-use must be programmed to identical times.
The times schedules are set for the required control circuits one after the other in the parameter
level.
Time schedule
Display
Heating circuit 1
Heating circuit 2 (Anl 9: underfloor heating circuit)
(second set of parameters after datapoint for vacation mode)
DHW circuit
Circulation pump
Parameters of the heating circuit
WE
1–7
Range of values
Period/day
1–7, 1–5, 5–6, 1, 2, 3, 4, 5, 6, 7 with
1–7 = daily, 1–5 = Monday to Friday
6–7 = Saturday to Sunday
1 = Monday, 2 = Tuesday, …, 7 = Sunday
Start first time-of-use
Stop first time-of-use
Start second time-of-use
Stop second time-of-use
7:00 00:00 to 24:00h; in steps of 30 minutes
12:00 00:00 to 24:00h; in steps of 30 minutes
12:00 00:00 to 24:00h; in steps of 30 minutes
22:00 00:00 to 24:00h; in steps of 30 minutes
Proceed as follows:
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Switch to the parameter level.
Display: Time,
blinks
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Operation
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Select datapoint for times-of-use.
Display:
1
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Activate editing mode for times-of-use.
Display: 1–7
Select period/day for which the times-of-use are to be
valid:
1–7 = Monday to Sunday
1–5 = Monday to Friday
6–7 = Saturday to Sunday
1 = Monday, 2 = Tuesday, …, 7 = Sunday
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Activate editing mode for period/day.
START
Display: START;
blinks.
Edit start time (steps of 30 minutes).
Confirm start time. Display: STOP
Edit stop time (steps of 30 minutes).
Confirm stop time. Display: START
The second time-of-use is set like the first time-of-use.
To set the times-of-use for each day, repeat the instructions in the fields highlighted in gray.
Exit the datapoint for times-of-use.
Return to the operating level.
Note!
Do not use the 1–7 , 1–5 und 6–7 menus to check the programmed times-of-use. On opening
this period, the times-of-use are reset to their default settings.
Note!
The controller automatically returns to the operating level if the keys are left unpressed for five
minutes.
EB 5476 EN 13
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Operation
1.6.1 Entering public holidays
On public holidays, the times-of-use specified for Sunday apply. A maximum of 20 public holi-
days may be entered.
The public holidays are set in the parameter level.
Set the function block FB6 = ON to make the programmed public holidays also apply to the
DHW heating.
Parameter
WE
–
Range of value
Public holidays
Configurable as required
Proceed as follows:
Switch to the parameter level.
Display: Time, blinks
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Select datapoint for public holidays.
Display:
Open data point for public holidays.
If applicable, select – – – –.
Activate editing mode for public holiday.
blinks.
Edit public holiday.
Confirm public holiday.
To enter additional public holidays, re-select – – – – (between 31.12 and 01.01) and repeat the
steps in the fields highlighted in gray.
Return to the operating level.
Note!
Public holidays that are not assigned to a specific date should be deleted by the end of the year
so that they are not carried on into the following year.
Deleting a public holiday:
Select the holiday you wish to delete in the datapoint for public holidays.
Confirm selection.
Select – – – – .
Delete the public holiday.
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Operation
1.6.2 Entering vacation periods
During vacation periods, the controller constantly remains in the reduced operating mode. The
system is monitored for frost. A maximum of 10 vacation periods can be entered.
The vacation periods are set in the parameter level.
Set the function block FB6 = ON to make the programmed vacations also apply to the DHW
heating.
Parameter
WE
–
Range of value
Vacation period
Configurable as required
Proceed as follows:
Switch to the parameter level.
Display: Time, blinks
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Select datapoint for vacation periods.
Display:
Open datapoint for vacation periods.
Display: START
If applicable, select – – – –.
Activate editing mode for vacation periods.
blinks.
Set start date of vacation period.
Confirm start date of the vacation period.
Display: STOP
Set end of vacation period.
Confirm end of the vacation period.
To enter additional vacation periods, re-select – – – – (between 31.12 and 01.01) and repeat
the steps in the fields highlighted in gray.
Return to the operating level.
Note!
Vacation periods that are not assigned to a specific date should be deleted by the end of the
year so that they are not carried on into the following year.
EB 5476 EN 15
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Operation
Deleting vacation periods:
Select the vacation period you wish to delete in the datapoint for vacation periods.
Confirm selection.
Select – – – – .
Delete vacation period.
1.7 Correcting temperature set points
The room temperature for the heating circuit can be adapted to the actually valid conditions at
the correction switch:
4 Slide correction switch in + direction:
The flow temperature is increased and the room temperature becomes warmer.
4 Slide correction switch in – direction:
The flow temperature is reduced and the room temperature becomes cooler.
Note!
The operation of the underfloor heating in system Anl 9 remains unaffected.
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Start-up
2
Start-up
2.1 Setting the system code number
10 different hydraulic schematics are available. Each system configuration is represented by a
troller functions are described in sections 5, 6 and 7.
Changing the system code number resets previously adjusted function blocks to their default set-
tings (WE). Function block parameters and settings in the parameter level remain unchanged.
The system code number is set in the configuration level.
Proceed as follows:
Switch to the parameter level.
Display shows: Time,
blinks
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Switch to the configuration level.
Display shows: Current system code number,
blink
Activate editing mode for system code number.
“Anl“ blinks on the display.
Set system code number.
Confirm system code number.
Exit the configuration level.
Return to the operating level.
2.2 Activating and deactivating functions
A function is activated or deactivated in the associated function block. The numbers 0 to 24 in
the top row of the display represent the respective function block numbers. When a configura-
tion level is opened, the activated function blocks are indicated by a black square on the
right-hand side below the function block number. The first level of the display shows the function
blocks 0 to 23 and the second level shows the status of function blocks 24 to 47.
The function blocks are described in section 12.1.
EB 5476 EN 17
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Start-up
Proceed as follows:
Switch to the parameter level.
Display shows: Time, blinks
Switch to the configuration level.
Display shows: Current system code number,
blink.
Select level displaying function blocks 0 to 23 or
Select level displaying function blocks 24 to 47.
Select function block.
Activate editing mode for function block.
The function block number starts to blink.
If 0 0 0 0 0 appears on the display, the key number needs to be entered first. Refer to
section 2.4
Activate function block (FB = ON).
An activated function block is indicated by a black square below (right) the function
block number in the top row of the controller display.
or:
Deactivate function block (FB = OFF).
Confirm setting.
If the function block is not closed, further function block parameters can be adjusted.
Proceed as follows:
Make the desired changes and confirm.
If applicable, the next function block parameter is displayed.
Confirm all parameters to exit the opened function block.
To adjust additional function blocks within the configuration level, repeat the steps in the fields
highlighted in gray.
Exit the configuration level.
Return to the operating level.
Note!
The controller automatically returns to the operating level if the keys are left unpressed for five
minutes.
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Start-up
2.3 Changing parameters
Depending on the set system code number and the activated functions, not all parameters listed
in the parameter list in the Appendix (–> section 12.2) might be available.
Proceed as follows:
Switch to the parameter level. Display shows: Time,
Select parameter.
blinks
Activate editing mode for parameter.
Parameters which do not allow the editing mode to activated are protected by a key
number. These parameters can only be altered as long as the key number is active af-
ter selecting a protected function block (e.g. FB20) (–> section 2.4).
Change parameter.
Confirm parameter setting.
To adjust additional parameters, repeat the steps in the fields highlighted in gray.
Return to the operating level.
Note! The controller automatically returns to the operating level if the keys are left unpressed for
five minutes.
2.4 Enter key number
Some functions are protected against unintentional or unauthorized access. These functions can
only be activated or deactivated after the valid key number has been entered. The valid key
number, remove the page or make the key number unreadable.
Proceed as follows:
0 0 0 0 blinks on the display.
Set valid key number.
Confirm key number.
When the correct key number is entered, the function block to be changed blinks on the
display, whereas the display does not blink when an incorrect key number is entered.
The key number remains active for approx. 5 minutes if the keys are left unpressed
during this time.
EB 5476 EN 19
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Start-up
2.5 Calibrating sensors
The connected sensors are calibrated in the configuration level. The following applies:
Pt 1000 and Pt 100 sensors
4 FB16 = ON, select “P1000“:
4 FB16 = ON, select “ntc“:
4 FB16 = OFF:
NTC and Pt 100 sensors
PTC and Pt 100 sensors (default setting)
The resistance values of the sensors can be found on page 98.
If the temperature values displayed at the controller differ from the actual temperatures, the
measured values of all connected sensors can be changed or readjusted. To calibrate a sensor,
the currently displayed sensor value must be changed such that it matches the temperature (ref-
erence temperature) measured directly at the point of measurement.
Perform the calibration in function block FB33. The function block FB33 always remains
activated.
Proceed as follows:
Switch to the parameter level.
Display: Time,
blinks
Switch to the configuration level.
Display: Current system code number (Anl),
blink
Select function block level 24 to 47.
Select function block FB33.
Activate function block FB33.
Display: 0 0 0 0 0
Enter currently valid key number.
Display: Flow sensor, measured temperature
Flow sensor (VF1)
If necessary, select other sensors that you want to calibrate.
Outdoor sensor (AF)
Room sensor (RF)
Return flow sensor (RüF1)
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Start-up
Return flow sensor (RüF2)
Solar circuit collector sensor (CF)
Flow sensor (VF2)
Storage tank sensor (SF1–SF2)
Flow sensor in DHW circuit (VF3)
Activate editing mode for sensor.
Correct measured temperature.
Read the actual temperature directly from the thermometer at the point of measure-
ment and enter this value as the reference temperature.
Confirm corrected measured temperature.
Additional sensors are calibrated similarly.
Exit the configuration level.
Return to the operating level.
2.6 Resetting to default values
All parameters and function blocks from any parameter level can be reset to their default set-
tings (WE).
Proceed as follows:
Reset to default settings.
Function blocks and parameters are reset to their default settings (WE).
Note!
Resetting protected parameters to their default settings is only possible when the key number is
still active. The function block settings are kept.
Note!
The controller is ready for operation with its default settings. You just need to set the correct date
and current time.
EB 5476 EN 21
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Manual operation
3
Manual operation
Heating circuit and DHW circuit (Anl 9: underfloor heating circuit) can be set to manual mode
at their operating mode selector switches.
Heating circuit mode selector switch
The heating circuit can only be set to manual mode when the DHW/underfloor heating circuit
mode selector switch is not positioned at
.
+
0
–
UP1 on, SLP/TLP off,
valve RK1 opens
UP1 on, SLP/TLP off,
valve RK1 stationary
UP1 off, SLP/TLP off,
valve RK1 closes
Anl 1, 2, 3
UP1 on,
UP1 on,
valve RK1 stationary
UP1 on,
valve RK1 closes
Anl 4, 5, 6, 11
valve RK1 opens
UP1 on,
valve RK2 stationary,
valve RK1 opens
UP1 on,
valve RK2 stationary,
valve RK1 stationary
UP1 on,
valve RK2 stationary,
valve RK1 closes
Anl 7, 8
Anl 9
UP1 on, SLP off,
valve RK2 stationary,
valve RK1 opens
UP1 on, SLP off,
valve RK2 stationary,
valve RK1 stationary
UP1 on, SLP off,
valve RK2 stationary,
valve RK1 closes
DHW circuit mode selector switch (system Anl 9: underfloor heating circuit)
+
0
–
UP1 off, SLP/TLP on,
charging temp. control
DHW heating inactive
DHW heating inactive
Anl 2, 3
SLP/TLP on,
valve RK2 opens
SLP/TLP on,
valve RK2 stationary
SLP/TLP on,
valve RK2 closes
Anl 4, 5, 6, 11
SLP/TLP on,
valve RK1 stationary,
valve RK2 opens
SLP/TLP on,
valve RK1 stationary,
valve RK2 stationary
SLP/TLP on,
valve RK1 stationary,
valve RK2 closes
Anl 7, 8
Anl 9
UP1 on, SLP on,
valve RK1 stationary,
valve RK2 opens
UP2 on, SLP off,
valve RK1 stationary,
valve RK2 stationary
UP2 on, SLP off,
valve RK1 stationary,
valve RK2 closes
Note!
22 EB 5476 EN
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Systems
4
Systems
10 hydraulic schematics are available.
System code number (Anl)
Heating
1
2
3
4
5
6
7
8
9*
11
Outdoor temperature dependent flow temperature control with
variable return flow temperature limitation
Mixing control
•
•
•
•
•
From the primary circuit
From the secondary circuit
in storage tank system
in st. tank charging system
in instantaneous heating sys.
Mixing control
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Solar system possible**
•
•
•
•
*
The system Anl 9 is designed for the control a radiator in conjunction with an underfloor heating
circuit.
** The solar circuit is activated with the function block setting FB15 = ON, select “CF“. Further
parameters (Solar circuit pump ON, Solar circuit pump OFF and Solar charging OFF) are available
to influence the solar-operated DHW heating.
EB 5476 EN 23
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Systems
System Anl 1
Default settings
FB13 = OFF
FB20 = ON
Without RF
With RüF1
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Systems
System Anl 2
Default settings
FB13 = OFF
FB20 = ON
FB14 = ON
FB15 = OFF
Without RF
With RüF1
With SF1
Without SF2
EB 5476 EN 25
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Systems
System Anl 2, setting different from default setting · With switch valve
Setting different from default setting: FB9 = ON, select “US“
FB13 = OFF
FB20 = ON
FB14 = ON
FB15 = OFF
Without RF
With RüF1
With SF1
Without SF2
26 EB 5476 EN
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Systems
System Anl 2, setting different from default setting · With solar system
Solar collector
Setting different from default setting: FB15 = ON, select “CF“
FB13 = OFF
Without RF
FB20 = ON
With RüF1
With SF1
With SF2
FB14 = ON
FB15 = ON, select “CF“
EB 5476 EN 27
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Systems
System Anl 3
Default settings
FB13 = OFF
Without RF
With RüF1
With SF1
FB20 = ON
FB14 = ON
FB15 = ON, select “---“
FB27 = OFF
With SF2
Without VF3
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Systems
System Anl 3, setting different from default setting · With solar system
Solar
collector
Setting different from default setting: FB15 = ON, select “CF“
FB13 = OFF
Without RF
FB20 = ON
With RüF1
With SF1
FB14 = ON
FB15 = ON, select “CF“
FB27 = OFF
With SF2
Without VF3
EB 5476 EN 29
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Systems
System Anl 4
Default settings
FB13 = OFF
FB20 = ON
FB21 = OFF
Without RF
With RüF1
Without RüF2
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Systems
System Anl 4, setting different from default setting · With solar system
Solar collector
Setting different from default setting: FB15 = ON
FB13 = OFF
FB15 = ON
FB20 = ON
FB21 = OFF
Without RF
With SF2
With RüF1
Without RüF2
EB 5476 EN 31
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Systems
System Anl 5
Default settings
FB13 = OFF
Without RF
With RüF1
With SF1
FB20 = ON
FB14 = ON
FB15 = ON, select “---“
FB21 = OFF
With SF2
Without RüF2
32 EB 5476 EN
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Systems
System Anl 5, setting different from default setting · With solar system
Solar
collector
Setting different from default setting: FB15 = ON, select “CF“
FB13 = OFF
Without RF
With RüF1
With SF1
FB20 = ON
FB14 = ON
FB15 = ON, select “CF“
FB21 = OFF
With SF2
Without RüF2
EB 5476 EN 33
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Systems
System Anl 6
Default settings
FB13 = OFF
FB20 = ON
Without RF
With RüF1
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Systems
System Anl 7
Default settings
FB13 = OFF
FB20 = ON
FB14 = ON
FB15 = OFF
Without RF
With RüF1
With SF1
Without SF2
EB 5476 EN 35
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Systems
System Anl 8
Default settings
FB13 = OFF
FB20 = ON
FB14 = ON
FB15 = ON
FB27 = OFF
Without RF
With RüF1
With SF1
With SF2
Without VF3
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Systems
System Anl 9
Default settings
FB13 = OFF
FB20 = ON
FB14 = ON
FB15 = OFF
Without RF
With RüF1
With SF1
Without SF2
EB 5476 EN 37
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Systems
System Anl 9, setting different from default setting · With solar system
Solar collector
Setting different from default setting: FB15 = ON, select “CF“
FB13 = OFF
Without RF
FB20 = ON
With RüF1
With SF1
With SF2
FB14 = ON
FB15 = ON, select “CF“
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Systems
System Anl 11
Default settings
FB13 = OFF
FB20 = ON
FB14 = ON
FB15 = ON
FB21 = OFF
FB27 = OFF
Without RF
With RüF1
With SF1
With SF2
Without RüF2
Without VF3
EB 5476 EN 39
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Functions of the heating circuit
5
Functions of the heating circuit
Which controller functions are available depends on the selected system code number (Anl).
5.1 Weather-compensated control
When weather-compensated control is used, the flow temperature is controlled according to the
outdoor temperature. The heating characteristic in the controller defines the flow temperature
for weather-compensated control is measured at the outdoor sensor or received over a current
input.
tVL Flow temperature
tA Outdoor temperature
Fig. 2 · Gradient characteristics
Measured at the outdoor sensor
Function
WE
Configuration
FB18 = OFF
Outdoor temperature – Current input
OFF
Received over (0)4 to 20 mA current input (a 50 Ωresistor must be connect to terminals 7(+)
and GND (terminals ½) parallel to the current signal)
40 EB 5476 EN
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Functions of the heating circuit
Function
WE
Configuration
FB18 = ON
Outdoor temperature – Current input
OFF
0: 0 to 20 mA = –20 to 50 °C
4: 4 to 20 mA = –20 to 50 °C
5.1.1 Gradient characteristic
Basically, the following rule applies: a decrease in the outdoor temperature causes the flow tem-
perature to increase. By varying the Gradient and Level parameters, you can adapt the charac-
teristic to your individual requirements. Increasing Gradient results in a higher flow tempera-
ture, decreasing Gradient in a lower flow temperature. The Level parameter performs a parallel
transport of the heating characteristic in an upward or downward direction.
Outside the times-of-use, reduced set points are used for control:
Reduced flow set point = Flow set point – Set-back difference.
The Max. flow temperature and Min. flow temperature parameters mark the upper and lower lim-
its of the flow temperature. A separate gradient characteristic can be selected for the limitation
of the return flow temperature.
Examples for adjusting the characteristic:
4 Old building, radiator design 90/70:
4 New building, radiator design 70/55:
4 New building, radiator design 55/45:
Gradient approx. 1.8
Gradient approx. 1.4
Gradient approx. 1.0
Gradient smaller 0.5
4 Underfloor heating depending on arrangement:
Function
WE
Configuration
FB19 = OFF
Characteristics
OFF
Parameters
WE
1.8
WE*
0.8
Range of values
0.2 to 3.2
Gradient, flow
Level, flow
0 °C –5 °C
15 °C 5 °C
–30 to 30 °C
0 to 50 °C
Set-back difference
Min. flow temperature
Max. flow temperature
20 °C 20 °C
90 °C 50 °C
20 to 130 °C
20 to 130 °C
*
Default setting applies to system Anl 9, floor heating
EB 5476 EN 41
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Functions of the heating circuit
5.1.2 4-point characteristic
The 4-point characteristic allows you to define your own heating characteristic.
It is defined by 4 points for the Outdoor temperature, the Flow temperature and the Return flow
temperature. The Set-back difference at points 2 and 3 indicates how much the flow temperature
is reduced outside the times-of-use. The Max. flow temperature and Min. flow temperature pa-
rameters mark the upper and lower limits of the flow temperature.
P1 to P4
Points 1 to 4
t
t
Flow temperature
VL
Outdoor temperature
Minimum flow temperature
Maximum flow temperature
Set-back characteristic
A
... min
... max
-----
Fig. 3 · 4-point characteristic
Function
WE
Configuration
Characteristic
OFF
FB19 = ON
Parameters
WE
WE*
Range of values
–30 to 20 °C
Outdoor temperature, point 1
Outdoor temperature, point 2
Outdoor temperature, point 3
Outdoor temperature, point 4
–15 °C –15 °C
–5 °C
5 °C
–5 °C
5 °C
15 °C
15 °C
Flow temperature, point 1
Flow temperature, point 2
Flow temperature, point 3
Flow temperature, point 4
70 °C
55 °C
40 °C
25 °C
50 °C
40 °C
35 °C
20 °C
20 to 130 °C
20 to 90 °C
Return flow temperature, point 1
Return flow temperature, point 2
Return flow temperature, point 3
Return flow temperature, point 4
65 °C
50 °C
35 °C
20 °C
–
–
–
–
Set-back difference, points 2, 3
Max. flow temperature
20 °C
90 °C
5 °C
0 to 50 °C
50 °C
20 to 130 °C
42 EB 5476 EN
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Functions of the heating circuit
Parameters
WE
WE*
Range of values
20 to 130 °C
Min. flow temperature
20 °C
20 °C
*
Default setting applies to system Anl 9, floor heating
5.2 Fixed set point control
During the times-of-use, the flow temperature can be controlled according to a fixed set point.
Outside the times-of-use, this set point is reduced by the Set-back difference. Both Minimum
flow temperature and Maximum flow temperature parameters are set to identical values.
Parameters
WE
WE*
Range of values
20 to 130 °C
20 to 130 °C
Max. flow temperature
Min. flow temperature
90 °C
20 °C
50 °C
20 °C
*
Default setting applies to system Anl 9, underfloor heating
5.3 Underfloor heating
The system Anl 9 is designed for radiator heating in conjunction with an underfloor heating cir-
cuit.
The maximum flow temperature of the radiator circuit is only available to the underfloor heating
circuit. If the radiator circuit is in rated operation, its flow temperature is only reduced so far to
ensure that the flow temperature of the underfloor heating circuit does not fall below the temper-
ature according to the heating characteristic for the control circuit RK2. If the radiator circuit is
switched off due to the outside temperature, the controller still continues to regulate a flow tem-
perature according to the heating characteristic for the control circuit RK1 at the flow sensor
VF1 despite of the deactivated circulation pump UP1.
Functions such as Optimization, Adaptation or Flash adaptation are only available for the ra-
diator circuit after regulating the temperature according to the room temperature. A connected
remote operation also only has an influence on the operation of the radiator circuit.
The summer mode causes both heating circuits to be switched off. The OT deactivation value in
rated operation parameter relates to both heating circuits, whereas the OT deactivation value in
reduced operation parameter only effects the radiator circuit.
EB 5476 EN 43
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Functions of the heating circuit
5.4 Deactivation depending on outdoor temperature
5.4.1 OT deactivation value in rated operation
If the outdoor temperature during rated operation exceeds the limit OT deactivation value in rated
operation, the affected heating circuit is put out of service immediately. The valve is closed and the
pump is switched off after a lag time. When the outdoor temperature falls below this value (less
0.5 °C hysteresis), heating operation is restarted immediately.
With the default settings, this means that, during the warm season, the system is switched off at
an outdoor temperature of 22 °C.
Parameter
WE
Range of values
OT deactivation value
in rated operation
22 °C 0 to 50 °C
5.4.2 OT deactivation value in reduced operation
If the outdoor temperature during reduced operation exceeds the limit OT deactivation value in
reduced operation, the affected heating circuit is put out of service immediately. The valve is
closed and the pump is switched off after a lag time. When the outdoor temperature falls below
this value (less 0.5 °C hysteresis), heating operation is restarted immediately.
With the default settings, this means that, at night, the system is switched off at an outdoor tem-
perature of 15°C to save energy. Nevertheless, remember that the system requires some time in
the morning to heat up the building
Parameter
WE
Range of values
OT deactivation value
in reduced operation
15 °C –10 to 50 °C
5.4.3 Summer mode
Summer mode is activated depending on the mean daytime temperature (measured between
7.00h and 22.00h) during the desired period.
If the mean daytime temperature exceeds the Outdoor temperature limit in summer mode on
two consecutive days, summer mode is activated on the following day: the heating is switched
off. If the mean daytime temperature remains below the Outdoor temperature limit in summer
mode on the next day, summer mode is deactivated on the following day.
44 EB 5476 EN
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Functions of the heating circuit
Function
WE
Configuration
FB3 = ON
Summer mode
OFF
01.06 Start summer mode / 01.01 to 31.12
30.09 Stop summer mode / 01.01 to 31.12
18 °C Outdoor temperature limit / 0 to 30 °C
5.5 Delayed outdoor temperature adaptation
The calculated outdoor temperature is used to determine the flow temperature set point. The
heat response is delayed when the outdoor temperature either decreases, or increases and de-
creases. If the outdoor temperature varies by, for example, 12 °C within a very short period of
time, the calculated outdoor temperature is adapted to the actual outdoor temperature in small
12°C
steps. Assuming a Delay of 3 °C/h, the adaptation would take t =
= 4 h.
3°C /h
Note!
The delayed outdoor temperature adaptation helps avoid unnecessary overloads of central
heating stations in combination with either overheated buildings occurring, for example, due to
warm winds, or temporarily insufficient heating due to the outdoor sensor being exposed to di-
rect sunshine.
Function
WE
Configuration
FB4 = ON
Delayed outdoor temperature adaptation OFF
Ab/AufAb (Delay on decreasing/decreasing and
increasing temperature)
3 °C/h Delay / 0.2 to 6.0 °C/h
5.6 Remote operation
Apart from measuring the room temperature, the Type 5244 Room Sensor (PTC sensor) and
Type 5257-5 Room Sensor (Pt 1000 sensor) offer the following opportunities of influencing the
control process:
4 Selection of the operating mode:
– Automatic mode
– Day mode
– Night mode
4 Set point correction: during rated operation, the room temperature set point can be in-
creased or reduced by up to 5 °C using a continuously adjustable rotary knob.
When the room sensor is activated, the measured room temperature is displayed. Nevertheless,
it is not used for control unless the Optimization, Adaptation, or Flash adaptation functions
EB 5476 EN 45
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Functions of the heating circuit
have been activated.
Functions
WE
OFF
OFF
Configuration
FB13 = ON
FB24 = OFF
Room sensor RF
Potentiometer input 1 to 2 kΩ
5.7 Optimization
This function requires the use of a room sensor. Depending on the building characteristics, the
controller determines and adapts the required preheating time (maximum 6 hours) to ensure
that the desired Room set point (rated room temperature) has been reached in the reference
room when the time-of-use starts. During the preheating period, the controller heats with the
max. flow temperature. This temperature is built up in steps of 10 °C. As soon as the Room set
point has been reached, weather-compensated control is activated.
Depending on the room sensor, the controller switches off the heating system up to two hours
before the time-of-use ends. The controller chooses the deactivation time such that the room
temperature does not drop significantly below the desired value until the time-of-use ends. It two
times-of-use are programmed for one day, the controller monitors the Reduced room set point
in the time between these times-of-use. Outside the times-of-use, the controller monitors the Sus-
tained temperature. Should the temperature fall below the Sustained temperature, the controller
heats with the max. flow temperature until the measured room temperature exceeds the ad-
justed value by 1 °C.
During the preheating period, DHW heating does not take place in systems with DHW circuits
linked in the secondary side.
Note!
Direct sunshine can cause the room temperature to increase and thus result in the premature de-
activation of the heating system.
Function
WE
Configuration
FB0 = ON
Optimization
OFF
Parameter
WE
Range of values
Room set point
20 °C 0 to 40 °C
17 °C 0 to 40 °C
15 °C 0 to 40 °C
Reduced room set point
Sustained temperature
46 EB 5476 EN
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Functions of the heating circuit
5.8 Flash adaptation
The function is only active in automatic mode ( ).
Direct reactions to deviations in room temperature can be achieved using the function block set-
ting: FB2 = ON. A gradient characteristic (FB19 = OFF) must be configured.
Flash adaptation counteracts room temperature deviations by increasing or decreasing the
level of the heating characteristic by up to 5 °C. The corrections are made after 10 minutes by
1 °C. The corrected value is indicated in the parameter level under the datapoint for Level, flow.
Note!
Cooling loads, such as drafts or open windows, affect the control process!
Rooms may be temporarily overheated when the cooling load has been eliminated!
Functions
WE
OFF
OFF
Configuration
FB2 = ON
Flash adaptation
Characteristic
FB19 = OFF
Parameter
WE
Range of values
Room set point
20 °C 0 to 40 °C
5.9 Adaptation
The function is only active in automatic mode ( ).
The controller is capable of automatically adapting the heating characteristic to the building
characteristics, provided a gradient characteristic has been set (FB19 = OFF). The reference
room, where the room sensor is located, represents the entire building and is monitored to en-
sure that the Room set point is maintained. When the mean measured room temperature in
rated operation deviates from the adjusted set point, the heating characteristic is modified ac-
cordingly for the following time-of-use. The corrected value is displayed in the parameter level
under Gradient, flow.
Function
WE
OFF
OFF
Configuration
FB1 = ON
Adaptation
Characteristics
FB19 = OFF
Parameter
WE
Range of values
Room set point
20 °C 0 to 40 °C
EB 5476 EN 47
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Functions of the heating circuit
5.10 Pump management
The Pump management function can be used for the heating circuit (circulation pump UP1). The
binary outputs BA8 and BA9 should always be used to control the operation of this pump when-
ever a speed-controlled pump is implemented in the heating circuit:
4 BA8 switches the pump on/off
4 BA9 releases the speed control in rated operation or sets the pump to minimum speed oper-
ation during reduced operation
BA8 is closed if the circulation pump is to be switched on. The binary output BA9 can be config-
ured with function block FB28:
BA9 = OFF outside times-of-use
BA9 = ON outside times-of-use
4 FB28 = ON:
4 FB28 = OFF:
Function
WE
Configuration
FB28
Pump management
OFF
5.11 Potentiometer input
Terminal 12 can be used for the connection of a potentiometer, e.g. to indicate the valve posi-
tion in percent on the controller display or at the control station.
Function
WE
Configuration
FB24 = ON
Potentiometer input 1 to 2 kΩ
OFF
48 EB 5476 EN
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Functions of the DHW circuit
6
Functions of the DHW circuit
6.1 DHW heating in the storage tank system
SLP
SF1
ZP
Storage tank charging pump
Storage sensor 1
Circulation pump
Cold water
KW
WW Hot water
Fig. 4 · DHW heating in a storage tank system
Start storage tank charging
The controller begins charging the storage tank when the water temperature measured at sen-
sor SF1 falls below the set point DHW heating ON or the temperature adjusted at the storage
tank thermostat:
DHW heating from the secondary circuit (Anl 2, 7, 9):
If the flow temperature of the system (in system Anl 9: of the radiator circuit) is higher than the
required charging temperature, the controller tries to reduce the temperature in the heating cir-
cuit side for three minutes at the maximum before the storage tank charging pump starts to op-
erate.
If the flow temperature of the system is lower than the required charging temperature, the
charging pump first start to run when the temperature at the affected flow sensor reaches the
temperature currently measured at sensor SF1 or the flow temperature could be raised at least
by 10 K.
If heating operation is not taking place, the storage tank charging pump is switched on immedi-
ately.
Note!
The function block setting FB20 = ON provides two switching conditions for the storage tank
off:
(1) SLP switched on regardless of the return flow temperature
(2) SLP switched on depending on the return flow temperature
EB 5476 EN 49
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Functions of the DHW circuit
DHW heating from the primary circuit (Anl 4):
The control valve opens depending on the DHW temperature from its closed position.
Stop storage tank charging
The controller stops charging the storage tank when the water temperature in the storage tank
measured at sensor SF1 reaches the value T = DHW heating ON + Hysteresis. In systems with
two storage tank sensors, the controller stops charging the storage tank when the water temper-
ature in the storage tank measured at sensor SF2 reaches the value DHW heating OFF. In sys-
tems with storage tank thermostat, the Hysteresis of the thermostat determines when the storage
tank charging is finished.
When a high flow temperature is required by the system, the storage tank charging pump is im-
mediately switched off. If no heating is taking place or if the flow temperature demand in the
system is lower, the End charging process parameter applies for switching off the storage tank
charging pump.
The storage tank charging pump is switched off at the latest after two transit time periods of the
control valve (2 x TY).
Functions
WE
ON
OFF
ON
Configuration
FB14
Storage sensor SF1
Storage sensor SF2
Return flow sensor RüF1
FB15
FB20
Parameters
WE
Range of values
DHW heating ON
DHW heating OFF
Hysteresis
45 °C 20 to 90 °C
50 °C 20 to 90 °C
5 °C
0 to 30 °C
Charging temperature
Stop charging
55 °C 20 to 90 °C
53 °C 20 to 90 °C
55 °C 20 to 90 °C
DHW temperature
50 EB 5476 EN
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Functions of the DHW circuit
6.2 DHW heating in the storage tank charging system
SF1
SF2
SLP
VF
Storage tank sensor 1
Storage tank sensor 2
Storage tank charging pump
Flow sensor
TLP
ZP
Heat exchanger charging pump
Circulation pump
KW
Cold water
WW Hot water
Fig. 5 · DHW heating in a storage tank charging system
Start storage tank charging
The controller begins charging the storage tank when the water temperature measured at sen-
sor SF1 falls below the set point DHW heating ON or the temperature adjusted at the storage
tank thermostat:
DHW heating from the secondary circuit (Anl 3, 8):
If the flow temperature of the system is higher than the required charging temperature, the con-
troller tries to reduce the temperature on the heating circuit side three minutes at the maximum
before the storage tank charging pump starts. If heating operation is not taking place or the
flow temperature in the system is lower, the storage tank charging pump is switched on immedi-
ately. If the currently measured temperature at sensor VF is reached, the storage tank charging
pump is switched on.
DHW heating from the primary circuit (Anl 5, 11):
The storage tank charging pump (Anl 5) or the heat exchanger charging pump (Anl 11) is
started immediately. The controller regulates the temperature to the Charging temperature.
Note!
In systems Anl 3, 8 and 11, the charging temperature in the storage tank charging circuit is re-
gulated over the flow sensor VF3 when it is activated on switching on the storage tank charging
pump.
The heat exchanger inlet temperature is monitored at sensor VF1 (Anl 3) or VF2. If it reaches the
Heat exchanger inlet temperature limit, the limit is used as the basis for the set point for the follo-
wing heat exchanger inlet temperature control.
EB 5476 EN 51
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Functions of the DHW circuit
Stop storage tank charging
The controller stops charging the storage tank when the water temperature in the storage tank
measured at sensor SF1 reaches the value T = DHW heating ON + Hysteresis. In systems with
two storage tank sensors, the controller stops charging the storage tank when the water temper-
ature in the storage tank measured at sensor SF2 reaches the value DHW heating OFF. In sys-
tems with storage tank thermostat, the Hysteresis of the thermostat determines when the storage
tank charging is finished.
DHW heating from the secondary circuit (Anl 3, 8):
When a high flow temperature is required by the system, the heat exchanger charging pump is
immediately switched off. If no heating is taking place or if the flow temperature demand in the
system is lower, the End charging process parameter applies for switching off the heat
exchanger charging pump.
The heat exchanger charging pump is switched off at the latest after two transit time periods of
the control valve (2 x TY); 15 seconds after the heat exchanger charging pump has been
switched off, the storage tank charging pump stops operating.
DHW heating from the primary circuit (Anl 5, 11):
The storage tank charging pump (Anl 5) or the heat exchanger charging pump (Anl 11) is
switched off when the temperature reaches End charging process parameter, at the latest, how-
ever, two transit time periods of the DHW control valve (2 x TY).
In system Anl 11, 15 seconds after the heat exchanger charging pump has been switched off,
the storage tank charging pump stops operating.
Functions
WE
ON
ON
OFF
Configuration
FB14
Storage tank sensor SF1
Storage tank sensor SF2
Flow sensor VF3
FB15
FB27
Parameters
WE
Range of values
DHW heating ON
DHW heating OFF
Hysteresis
45 °C 20 to 90 °C
50 °C 20 to 90 °C
5 °C
0 to 30 °C
Charging temperature
End charging process
Heat exchanger inlet temperature limit
55 °C 20 to 90 °C
53 °C 20 to 90 °C
120 °C 20 to 130 °C
52 EB 5476 EN
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Functions of the DHW circuit
6.3 DHW heating with solar system (Anl 2, 3, 4, 5 und 9)
The systems Anl 2, 3, 4, 5 and 9 include a solar system for DHW heating. In these systems, the
difference between the temperatures measured at storage sensor SF2 and the sensor at the so-
lar collector CF is determined. The Solar pump ON parameter determines the minimum temper-
ature difference between sensors SF2 and CF required to activate the solar pump. If the temper-
ature difference falls below the value of Solar pump OFF, the solar pump is switched off. Ba-
sically, the solar pump is also switched off when the water temperature measured at sensor SF2
has reached the Solar charging OFF parameter.
The times-of-use of the DHW circuit do not have any influence on the operation of the solar sys-
tem. After the key number 1990 has been set, the operating hours of the solar pump are dis-
played in extended operating level.
Function
WE
Configuration
Storage tank sensor SF2
FB15 = ON, select “CF“
Parameters
WE
Range of values
0 to 30 °C
Solar circuit pump ON
Solar circuit pump OFF
Solar charging OFF
10 °C
2 °C
0 to 30 °C
70 °C 20 to 90 °C
6.4 DHW heating in instantaneous heating system (Anl 6)
The controller regulates the DHW outlet temperature of the heat exchanger according to the ad-
justed DHW temperature.
The circulation pump works according to the time schedule. We strongly recommend to operate
the circulation pump during times-of-use of the DHW circuit (–> section 6.5).
To keep temperature peaks caused by load changes as small as possible, it is absolutely neces-
sary that a temperature sensor with short response times (e.g. Type 5207-xx6x Pt 1000 Sen-
sor) to measure the DHW outlet temperature. In addition, an actuator with a transit time of
around 20 seconds should be used.
Note!
The control parameter setting has great influence on the control accuracy in the case of DHW
heating in instantaneous heating systems.
Parameter
WE
Range of values
DHW temperature
55 °C 20 to 90 °C
EB 5476 EN 53
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Functions of the DHW circuit
6.5 Circulation pump operation during storage tank charging
With the setting FB26 = ON, the circulation pump continues operation according to the pro-
grammed time schedule even during storage tank charging.
With the setting FB26 = OFF, the circulation pump is switched off as soon as the storage tank
charging pump is activated. The circulation pump returns to operate according to the time
schedule when the storage tank charging pump has been switched off again.
Function
WE
Configuration
FB26
Circulation pump
OFF
6.6 Circulation over the heat exchanger
In systems, in which the DHW heating takes place in the storage tank charging system from the
primary circuit (Anl 5, 11), it is possible to keep the control of the charging temperature even
when the active storage tank charges are finished.
Function
WE
Configuration
FB32 = ON
Circulation over the heat exchanger
OFF
6.7 Intermediate heating operation (Anl 2, 3 and 9)
With the setting FB9 = OFF, heating operation of the UP1 heating circuit is reactivated for a pe-
riod of 10 minutes after 20 minutes of priority (heating deactivated during DHW heating). Dur-
ing this time, DHW heating is interrupted.
Function
WE
Configuration
Parallel pump operation
OFF
FB9 = OFF, select “20“
Note!
In system Anl 2 with circulation pump and switchover valve, the Intermediate heating operati-
on function, set FB9 = ON and select “US“ and “20“.
6.8 Parallel pump operation (Anl 2, 3 and 9)
When the Parallel pump operation function is activated, the circulation pump UP1 remains
switched on during DHW heating unless certain operating situations occur. These situations in-
clude, for example, those when the boost of the flow temperature exceeds 10 °C, or when the
maximum flow temperature is exceeded. In this case, the controller applies priority operation, if
necessary with intermediate heating.
54 EB 5476 EN
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Functions of the DHW circuit
Once a parallel pump operation cycle has been activated and the time for Stop parallel opera-
tion has elapsed, system deviations greater than 5 °C cause the controller to suspend parallel
operation for 10 minutes and to apply priority operation.
Function
WE
Configuration
FB9 = ON, PU
Parallel pump operation
OFF
10 min Stop parallel operation / 2 to 10 min
Note!
In system Anl 9, the control valve of the underfloor heating circuit is always closed with the
function block setting FB9 = OFF. With the setting FB9 = ON, select “PU“ to ensure it remains in
control operation even the parallel operation has been interrupted due to system deviations.
6.9 Priority circuit (Anl 4, 5, 6, 7, 8 and 11)
In many district heating systems with primary DHW heating, the allotted amount of water is only
intended to supply the heating system. As a result, the capacity required for DHW heating
needs to be taken from the heating system when great heating loads occur; and this, until DHW
heating has been concluded.
Nevertheless, heating operation is not simply to be interrupted. Only the amount of energy re-
quired for DHW heating is to be deducted. This can be achieved by using the priority functions
Reverse control and Set-back operation.
6.9.1 Reverse control
The capacity demand of the heating circuit is reduced when there is a system deviation of more
than 5 °C in the DHW circuit. This is achieved by the three-step output of the DHW circuit work-
ing in the opposite direction compared to the heating circuit control valve.
The amount of time in which the priority for the DHW circuit is given is set in the Priority in case
of deviation parameter.
Function
WE
Configuration
Priority for
OFF
FB8 = ON, select “In“
DHW circuit
10 min Priority in case of deviation / 2 to 10 min
6.9.2 Set-back operation
The heating circuit is set back to reduced operation for 20 minutes when a system deviation of
more than 5 °C arises in the DHW circuit. Its capacity demand is reduced by the value in
EB 5476 EN 55
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Functions of the DHW circuit
Set-back difference by set-back of the current flow temperature.
The amount of time in which the priority for the DHW circuit is given is set in the Priority in case
of deviation parameter.
Function
WE
Configuration
FB8 = ON, Ab
Priority for
OFF
DHW circuit
10 min Priority in case of deviation / 2 to 10 min
6.10 Forced charging of the DHW storage tank (Anl 2, 3, 5, 7, 8 and 9)
This function is always configured when the system has at least one storage tank sensor.
To provide the full room heating performance when the time-of-use of the heating circuits be-
gins, existing storage tanks are charged one hour before the time-of-use of the heating circuits
starts.
6.11 Thermal disinfection of the DHW storage tank
In all systems with DHW heating, the DHW storage tank is thermally disinfected on a selected
day of the week or every day. The storage tank is heated up to 70 °C. Thermal disinfection starts
at 0.00h and finishes at 4.00h at the latest.
Thermal disinfection for preventing legionella infection causes
4 high return flow temperatures during the disinfection cycle (return flow temperature limita-
tion suspended),
4 high storage temperatures after thermal disinfection has been concluded,
4 lime scale (possibly), which can have a negative effect on heat exchanger performance.
Note!
This function is not available when a storage tank thermostat is used.
Function
WE
Configuration
FB7 = ON
Thermal disinfection
OFF
3 (Mi) Day of the week / 1–7 = daily, 1, 2 to 7 = Mon, Tue to Sun
56 EB 5476 EN
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System-wide functions
7
System-wide functions
7.1 Automatic summer time/winter time changeover
The clock is automatically adjusted on the last Sunday in March at 2.00h and on the last Sunday
in October at 3.00h.
Function
WE
ON
Configuration
FB5 = ON
Summer time/winter time changeover
7.2 Frost protection
When outdoor temperatures below 3 °C occur, the heating circulation pumps UP1 and UP2 are
switched on. The controllers regulates the temperature to a flow temperature set point of 20 °C.
The circulation pump for the DHW circuit is likewise switched on. Outside the DHW heating
times-of-use, the temperature in the DHW storage tank is additionally kept at 5 °C, provided a
storage tank thermostat is not used. In conjunction with a storage tank thermostat, the frost pro-
tection function does not work outside the times-of-use.
Note!
The frost protection function is not activated when manual mode is selected at the mode switch.
7.3 Forced operation of the pumps
When the heating circuit pumps have not been activated for 24 hours, forced operation of the
pumps is started between 00.00h and 00.01h. This is done to avoid that the pumps get stuck
when they are not operated for a longer period of time. The forced operation of the storage tank
or heat exchanger charging pump is operated between 00.01h and 00.02h.
7.4 Return flow temperature limitation
The temperature difference between the flow and return flow indicates how well the energy is
used: the greater the difference, the higher the efficiency. A return flow sensor is sufficient to
evaluate the temperature difference when the flow temperatures are preset. The return flow tem-
perature can be limited either to a value depending on the outdoor temperature (variable) or to
a fixed set point. When the temperature measured at return flow sensor RüF exceeds the limit
value, the set point of the flow temperature (flow temperature of the heating system, charging
temperature) is reduced. As a result, the primary flow rate is reduced and the return flow tem-
perature falls. The Limiting factor determines how strongly the controller responds when the limit
values are exceeded in either direction.
EB 5476 EN 57
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System-wide functions
The measured temperature reading (return flow temperature) and the set point reading (flow
temperature of the heating, charging temperature) blink to indicate that a return flow limitation
is active in the control circuit concerned. In systems Anl 2, 3, 7, 8 and 9, the Return flow limita-
tion temperature parameter during DHW heating is used for limitation in the primary circuit
while the DHW heating is active. The systems Anl 4, 5, 6 and 11 allow a separate return flow
sensor to be installed in the DHW circuit.
To ensure that the preset Return flow temperature limit temperature during DHW heating can be
met, make sure that:
– the heating characteristic is not adjusted to ascend too steeply,
– the speed of the circulation pumps is not set too high,
– the heating systems have been calibrated.
Note!
For outdoor temperature dependent control with gradient characteristic, the return flow tempe-
rature is limited to fixed set point by entering the same value for both Maximum return flow tem-
perature and Minimum return flow temperature parameters.
Functions
WE
Configuration
Return flow sensor RüF1
ON
1
FB20 = ON
Limiting factor / 0.1 to 10
Return flow sensor RüF2
OFF
1
FB21 = ON
Limiting factor / 0.1 to 10
Parameters
WE
1.2
Range of values
0.2 to 3.2
Gradient, return flow
Level, return flow
0 °C –30 to 30 °C
Maximum return flow temperature
Minimum return flow temperature
65 °C
65 °C
20 to 90 °C
20 to 90 °C
20 to 90 °C
Return flow temperature limit temperature during 65 °C
DHW heating
Note!
In systems Anl 2, 5, 7 and 9 The function block setting FB20 = ON or FB21 = ON provides two
switching conditions for the storage tank charging pump (SLP) that can be selected when the
heating circuits are switched off:
(1) SLP switched on regardless of the return flow temperature
(2) SLP switched on depending on the return flow temperature
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System-wide functions
7.5 Condensate accumulation control
Activate the Limitation of the system deviation for OPEN signal function to start up condensate
accumulation plants, in particular to avoid problematic excess temperatures. The controller re-
sponse to set point deviations which cause the primary valve to open is attenuated. The control-
ler response to set point deviations which cause the control valve to close remains unaffected.
Function
WE
Configuration
Limitation of the system deviation for
OPEN signal RK1/RK2
OFF
2 °C
FB11/FB12 = ON
Maximum system deviation / 2 to 10 °C
Note!
The condensate accumulation control function can only be activated when no on/off control has
been configured, i.e. when FB10 = ON or FB17 = ON.
7.6 Three-step control
The flow temperature can be controlled using a PI algorithm. The valve reacts to pulses that the
controller emits when a system deviation occurs. The length of the first pulse, in particular, de-
pends on the extent of the system deviation and the selected Proportional gain KP (the pulse
length increases as KP increases). The pulse and pause lengths change continuously until the
system deviation has been eliminated. The pause length between the single pulses is greatly in-
fluenced by the Reset time TN (the pause length increases as TN increases).
The Transit time TY specifies the time required by the valve to travel through the range of 0 to
100 %.
Functions
WE
ON
Configuration
Three-step control for RK1
FB10 = ON
0.5
200 s
90 s
KP (proportional gain) / 0.1 to 50
T
N (reset time) / 1 to 999 s
TY (valve transit time) / 15 to 240 s
2 x TY Pump lag time / 1 x TY to 10 x TY
Three-step control for RK2
ON
FB17 = ON
0.5
60 s*
KP (proportional gain) / 0.1 to 50
TN (reset time) / 1 to 999 s
30 s* TY (valve transit time) / 15 to 240 s
*
WE applies to systems Anl 5, 6; TN = 200 s, TY = 90 s applies for system Anl 4
EB 5476 EN 59
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System-wide functions
7.7 On/off control
The flow temperature can be controlled by an on/off signal. The controlled valve is opened
when the flow temperature falls below the set point by T = 0.5 x Hysteresis. When the flow tem-
perature exceeds the set point by T = 0.5 x Hysteresis, the control valve is closed. The greater the
Hysteresis selected, the lower the switching frequency.
Function
WE
Configuration
On/off control for RK1/RK2
ON
FB10/FB17 = OFF
5 °C
Hysteresis / 1 to 30 °C
7.8 Releasing a control circuit over the binary input
The release of a control circuit using the binary output only becomes effective when the respec-
tive control circuit is in automatic mode (icon
).
The released control circuits always work in automatic mode; the deactivated control circuit be-
haves as if it were in frost protection mode if the outdoor temperature requires it. The control cir-
cuit can be released via the binary input when the binary input is open (BE = ON).
Function
WE
Configuration
Releasing a control circuit
OFF
FB25 = ON, FErn
Note!
The function cannot be selected in systems Anl 4, 5 and 9 with solar system and in system
Anl 11 with VF3.
7.9 Processing of external demand in RK1
Regardless of the operating mode, except form manual mode, of the control circuit RK1, the
controller uses the Minimum flow temperature for external demand when the binary input is
closed (BE1 = ON). The DHW heating from the secondary circuit and demands of the heating
circuit which are higher than the Minimum flow temperature for external demand have priority.
In systems Anl 7 and 8, a mixing control is not active, just the set point of the heating circuit
changes.
The deactivated binary input (BE1 = OFF) does not have any effect on the control.
Function
WE
Configuration
External demand over BE1 OFF
FB25 = ON, bed
20 °C Minimum flow temperature for external demand / 20 to 130 °C
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System-wide functions
Note!
The function cannot be selected in systems Anl 4, 5 and 9 with solar system and in system
Anl 11 with VF3.
7.10 Flow rate/capacity limitation
Flow rate/capacity limitation can be implemented based on a pulse or standardized signal of
0/4 to 20 mA provided by the heat meter. This only applies in plants without solar system. Par-
ticularly when a standardized signal is applied, a heat meter (flow meter) with high measuring
accuracy is required.
It must be ensured that the controller is supplied with updated measured values in intervals of
max. 5 seconds.
In system Anl 1, just the maximum limit for the flow rate or capacity can be entered.
7.10.1 Limitation using pulse input
A connected heat meter (terminals GND/15) with pulse output can be used to limit either the
flow rate or the capacity in the system.
Two different maximum limits can be set:
4 Maximum limit
4 Maximum limit for DHW exclusively for DHW heating
All limit values are given in the unit “pulses per hour“ [pulse/h]. As a result, the controller does
not distinguish between a flow rate pulse signal or a capacity pulse signal. As the displayed cur-
rent pulse rate P [pulse/h] is calculated depending on the interval between the received pulses,
it is natural that the controller cannot react immediately to all rapid flow rate or capacity
changes which occur in the system.
When the pulse rate reaches the current Max. limit, the current flow set point is reduced. How
strongly the controller responds is determined by the Limiting factor.
In systems Anl 4 to 6 and 11, the control circuit with lowest set limit in the set point is always re-
duced.
Example to determine the limit:
If a capacity of 30 kW is to be limited, the following limit value must be set for a heat meter with
an output of one pulse per kilowatt-hour:
30 kW
1 KWh / pulse
P =
=30 pulse / h
EB 5476 EN 61
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System-wide functions
Functions
WE
Configuration
FB22 = OFF
Current input for flow rate
measurement
OFF
Flow rate or capacity limitation
OFF
500 pulse/h
1.0
500 pulse/h
1.0
FB23 = ON
Max. limit / 3 to 500 pulse/h
Limiting factor / 0.1 to 10
Max. limit for DHW / 3 to 500 pulse/h
Limiting factor / 0.1 to 10
7.10.2 Limitation using 0/4 to 20 mA signal
A connected heat meter (terminals GND/15 with a 50 Ωresistor connected in parallel) with a
0/4 to 20 mA output can be used to limit the flow rate in the system. All limit values are given in
the unit “cubic meters per hour“ [m3/h]. As a result, it is necessary to se in addition to Lower
measuring range value 0 or 4 mA also an Upper measuring range value (flow rate at which the
20 mA signal is issued) in unit [m3/h]. When the flow rate reaches the current Maximum limit ,
the controller switches in control circuit RK1 to flow rate control with the Maximum limit acting
as the set point. If the flow temperature exceeds its normal set point by more than 5 °C during
this time, the flow temperature control is started again. If the flow rate falls below the set Mini-
mum limit, the control valve of control circuit RK1 is temporarily closed. The normal control op-
eration is started again when the flow temperature falls below its normal set point by 5 °C.
Note!
In systems Anl 4 to 6 and 11, the valve of the heating circuit is affected during an active flow
rate limitation.
Functions
WE
Configuration
Current input for flow rate measurement OFF
FB22 = ON, select “Lower measuring range”
Flow rate or capacity limitation
OFF
FB23 = ON
3
10.00 m /h Upper measuring range / 0.1 to 650 m3/h
0.01 m /h Minimum limit/ 0.01 to 650 m3/h
3
9.00 m /h Maximum limit / 0.01 to 650 m3/h
3
7.11 Locking manual levels
The number of access options to the controller can be restricted by locking the manual level.
When the locking is active, the mode switches positioned at the manual mode do not have any
effect concerning manual activation of the valves. Merely, reactions occur as if the mode
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System-wide functions
switches were set to “Night mode” or Heating circuit(s) deactivated” or “DHW heating un-
changed”.
Function
WE
Configuration
FB34 = ON
Locking manual levels
OFF
7.12 Setting a customized key number
Switch to the parameter level.
Display shows: Time,
blinks
Switch to the configuration level.
Display shows: Currently valid system code number,
blink
Select a function block (e.g. FB20) protected by the key number.
Open the function block.
0 0 0 0 0 appears on the display.
Set 01995 as the key number.
Confirm the key number.
Display shows: 00100
Enter current key number.
Confirm current key number.
Set new key number between 00100 and 01900.
Confirm new key number.
This new key number is now the active key number.
EB 5476 EN 63
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Operational faults
8
Operational faults
Malfunctions or faults are indicated by the
icon blinking on the display.
8.1 Sensor failure
The following list explains how the controller responds to the failure of the different sensors.
Safety functions such as frost protection and excess temperature protection no longer work
when a sensor fails.
4 Outdoor sensor AF: When the outdoor sensor fails, the controller uses a flow temperature
set point of 50 °C or the Max. flow temperature (when the Max. flow temperature is smaller
than 50 °C).
4 Flow sensor in heating circuit VF1/VF2: When the flow sensor is defective, the controller
continues to work with the associated valve in the 30 % valve position. DHW heating which
uses such a sensor to measure the charging temperature is interrupted. In systems Anl 4, 5, 6
and 11, the failure of flow sensor VF2 cause the DHW control valve to close.
4 Flow sensor in DHW circuit VF3: When the flow sensor VF3 is defective, the DHW heating
takes place without change in lag/lead sequence.
4 Return flow sensor RüF1/RüF2: The controller continues to function without the return tem-
perature limitation when the return flow sensor fails.
4 Room sensor RF: The controller functions using the settings for operation without room sen-
sor when the room sensor fails. For example, optimization mode switches to the reduced op-
eration mode. Adaptation mode is interrupted. The last defined heating characteristic is not
changed anymore.
4 Storage tank sensor SF1/SF 2: When one of the sensors fail, DHW heating no longer takes
place.
4 Solar circuit sensor SF2/CF: When one of the sensors fails, the solar circuit pump is
switched off.
8.2 Collective error alarm
As an alternative to the Pump management function, a fault alarm can be indicated over the bi-
nary output BA8. Should the error status register FSr indicate a fault, the binary output BA8 is
activated.
Function
WE
Configuration
FB47 = ON
Fault alarm output BA8
OFF
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Operational faults
8.3 Temperature monitoring
Should a deviation arise in a control circuit that is greater than 10 °C for longer than 30 min-
utes, the bit D12 is automatically set in the error status register.
If this function is not required, configure FB36 = ON, select “steig“ and leave the input BE8
unswitched.
8.4 Error status register
The error status register is used to indicate controller or system errors. In modem operation with
Dial-up also upon corrected fault function, any change in state of the error status register causes
the building control station to be dialed.
BITMAP error status register (FSr)
Number = Bit no. in HR
0 1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
A set bit is indicated by on the
right of number
20 21 22 23 24 25 26 27 28 29 210 211 212 213 214 215
Sensor breakage
D_0
Default values read
D_1
D_2
D_3
D_4
DHW set point not reached
Mode switch HK faulty
Mode switch DHW faulty
1) BE1 = active + (FB43 = ON) D_5
1) BE2 = active + (FB42 = ON) D_6
1) BE3 = active + (FB41 = ON) D_7
1) BE4 = active + (FB40 = ON) D_8
1) BE5 = active + (FB39 = ON) D_9
1) BE6 = active + (FB38 = ON) D_10
1) BE7 = active + (FB37 = ON) D_11
1) BE8 = active + (FB36 = ON) D_12
Data error alarm from WMZ
D_13
Meter bus communication error D_14
Unauthorized access
D_15
1)
The binary inputs BE1 to BE8 appear in the error status register whenever the associated function
block FB_ = ON
EB 5476 EN 65
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Communication
Example of a transfer to the control system:
The error status register is transferred as a word <w> in a holding register (HR) whose value is
calculated as follows: <w> = D_0 + D_1 + … + D_15 = 20 + 21 + … + 215
9
Communication
Using the serial system bus interface, the TROVIS 5476 Heating Controller can communicate
with a building control system. In combination with a suitable software for process visualization
and communication, a complete control system can be implemented.
The following communication settings are possible:
– Operation with a dial-up modem at the RS-232-C system bus interface
Basically, communication is only established automatically when errors occur. The controller
works autonomously. Nevertheless, the modem can dial up to the controller at any time to read
data from it or otherwise influence it, if necessary. We recommend to use the modem connect-
ing cable (1400-7139).
– Operation with a four-wire bus at the RS-485 system bus interface
To establish the link between computer and bus line, the signal level needs to be converted by a
converter (SAMSON’s TROVIS 5484 Converter).
Fig. 6 · Network structure
The TROVIS 5476 Controller is fitted with either a RS-485 port or a RS-232-C port depending
on the order. The optional operation between both versions or a conversion to a different port
version is not possible.
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Communication
9.1 Controller with RS-232-C port
The system bus connection is located at the back of the controller housing (RJ-12 jack).
In this case, the controller can be connected either directly to the serial interface of a PC
(point-to-point connection) or to a (dial-up) modem. A dial-up modem is required if the control-
ler is to be connected to the telecommunications network. In this case, the controller works au-
tonomously and can issue an alarm call to the building control station when errors occur. By
pressing the enter key when the time appears on the display, the following status information is
shown:
No communication, but the modem is ready
Interval between dialing has not yet elapsed since the last attempt
Connection currently established
4 FrEE:
4 PAUSE:
4 Conn:
4 RinG:
4 Init:
Incoming call
Modem is initialized
(appears only briefly, if it appears for longer period, the modem has not
responded with” OK“ and ATZ (–> page 70) is repeated)
Controller dialing control
4 CALL:
4 EndE:
Connection is cut
Additionally, the building control station can dial the controller, poll it and send it new data af-
ter writing to the holding register no. 92 with valid key number.
The Alternative recipient function is used by the controller after a programmable number of di-
aling attempts to the building control station has been completed.
Note!
If a wrong key number has been written to holding register no. 92 for the third consecutive time,
the controller immediately interrupts the modem connection and generates an alarm (Unautho-
rized access occurred). As a result, the call to the configured control system is triggered. Bit D15
is deleted as soon as the error status register has been read by the control system and the con-
nection has been terminated.
In special cases, the Lock dial-up function can be selected to stop dial-up in case an error oc-
curs. Using the Dial-up also upon corrected error function, the controller additionally informs
the building control station when a previously signaled error no longer persists.
EB 5476 EN 67
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Communication
Functions
WE
Configuration
Modem operation
OFF
8 bit
FB44 = ON
8 bit/16 bit
30 min Cyclical initialization In* / 0 to 255 min
5 min
5 min
PULS
–
Dialing pause to GLT PA* / 0 to 255 min
Modem timeout t0* / 0 to 99 min
Dial procedure / PULS/ton
Phone no. of control station GLT*
Alternative recipient
OFF
FB46
5
–
Number of dialing attempts An* / 0 to 99
Phone number of alternative recipient*
Lock dial-up
OFF
OFF
FB35
FB45
Dial-up also upon corrected error
Parameters*
WE
Range of values
Station address (ST-NO)
255
1 to 247 ( 8 bit)
1 to 999 (16 bit)
Baud rate (BAUD)
9600
150 to 9600
Fig. 7 · Pin assignment of RS-232 port (left) and RS-485 port (right)
9.2 Controller with serial RS-485 interface
A constant bus connection is required (data cable) for the operation of the controller with serial
RS-485 interface. The bus line links the control units/devices in an open ring. At the end of the
bus line, the data cable is connected to the control station using an RS-485/RS-232 converter
(e.g. TROVIS 5484).
The maximum range of the bus connection (cable length) is 1,200 meters. A maximum of
32 devices can be connected to such a segment.
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Communication
If you wish to use more than 32 devices in line or need to bridge greater distances, make sure
repeaters (e.g. TROVIS 5482) are installed to replicate the signal. With 8-bit addressing, a
maximum of 246 devices can be addressed and connected to a bus.
!
Warning!
You are required to follow the relevant standards and regulations concerning lightning and
overvoltage protection on installation.
Function
WE
Configuration
Modem operation
OFF
8 bit
FB44 = OFF
8 bit/16 bit
Parameters*
WE
Range of values
Station address
255
1 to 247 ( 8 bit)
1 to 999 (16 bit)
Baud rate
9600
150 to 9600
9.3 Description of communication parameters to be adjusted
Station address (ST.-NO)
This address is used to identify the controller in bus or modem mode. In a system, each control-
ler needs to be assigned a unique address.
Baud rate (BAUD)
In a bus system, baud rate refers to the transfer speed between control system and controller. In
modem mode, baud rate refers to the transfer speed between controller and modem.
The baud rate adjusted at the controller must correspond with the baud rate of the control sys-
tem, otherwise no communication can be established.
Cyclical initialization (In)
This parameter defines the period of time for a cyclical issue of the initialization command
“ATZ“. The command is not issued during dial-up or when connected. “ATZ“ causes the pro-
file 0 to be copied to the active profile, provided the modem parameters have been set and
saved in profile 0 using a suitable terminal program.
Dialing pause to the control station (PA)
It is recommendable to pause for approx. 3 to 5 minutes between dialing up to the control sys-
tem to avoid a permanent overloading of the telecommunications network. The Dialing pause to
the control station defines the interval between 2 dialing attempts.
EB 5476 EN 69
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Communication
Modem time-out (t0)
When the controller connects to the GLT but without addressing a Modbus data point, the con-
nection is closed after the time specified for Modem time-out has elapsed. If the error status reg-
ister has not been read during the GLT connection, the controller dials up to the GLT again after
the Dialing pause to the control station (PA) has elapsed.
Number of redialing attempts (An)
The controller tries to dial up to the control system again, observing the Dialing pause to the
control station, in case the GLT is busy or the function that triggered the call has not been reset
by the controller. After the specified number of redialing attempts have failed, the controller di-
als the alternative recipient.
Phone number of control station/alternative recipient
Enter the phone number of the control system modem/alternative recipient including the dialing
code, if necessary. Short pauses between the numbers can be entered using P (= 1 second); the
end of the string is to be marked by “–“. The phone number may include a maximum of
23 characters.
Example: “069, 2 sec. pause, 4009, 1 sec. pause, 0“: 0 6 9 P P 4 0 0 9 P 0 – (= 11 characters)
9.4 Meter bus interface
The TROVIS 5476 Heating and District Heating Controller can communicate with up to 3 heat
and water meters according to EN 1434-3. A flow rate or capacity limitation is possible on the
basis of the values measured at heat meter WMZ1.
Details on the use of the different heat or water meters can be found in the technical documenta-
tion TV-SK 6311.
Note!
Locate red jumper to the left with the meter bus
operation using the supply voltage
Fig. 8 · View from the back of the controller
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Communication
Note!
A 15 V DC supply voltage (+15 V at terminal 15 connected to the meter bus connection terminal
3) can be used at the WMZ connection of TROVIS 5476 Controller when the red jumper on the
the meter bus module in the heat meter is supplied. Furthermore, the heat meter is galvanically
connected with controller input side (pulse and current input at terminal 15) resulting it being
connected to the Modbus interface as well which can lead to the communication coming to a
standstill.
9.4.1 Activating the meter bus
To successfully transfer data from the heat meter to the controller, the heat meter must use a
standardized protocol in accordance with EN 1434-3. It is not possible to make a general state-
ment about which specific data can be accessed in each meter. For details on the different meter
makes, refer to the technical documentation TV-SK 6311. All necessary function block parame-
ters to set up the communication with heat or water meters are available in function block FB 29.
The meter bus address, the model code and the reading mode must be specified for the heat
meters WMZ1 to WMZ3.
A meter bus address must be unique and correspond with the address preset in the WMZ. If the
preset meter bus address is unknown, a single heat meter connected to the controller can be as-
signed the meter bus address 254. The address 255 deactivates the communication with the re-
spective WMZ. The model code to be set for the heat meter can be found in TV-SK 6311. In gen-
eral, the default setting of 1434 can be used for most devices. The meters can be read either au-
tomatically every 24 hours (approx.), continuously or when the coils (= Modbus data points) as-
signed to the heat meters WMZ1 to WMZ3 are overwritten with the value 1 via the system bus
interface.
Function
WE
Configuration
FB29 = ON
Meter bus
OFF
254*
1434
Cont
Meter bus address for WMZ 1 to 3 (ST.-NO) / 0 to 255
Model code WMZ 1 to 3 / 1434, CAL3, APAtO, SLS
Reading mode WMZ 1 to 3 / 24h, Cont, CoiL
*
WE for WMZ 2 and 3: 255
9.4.2 Flow rate and/or capacity limitation via meter bus
Similar to the flow rate limitation based on a standardized 0/4 to 20 mA signal, the update rate
of the measured variable, flow rate and/or capacity, must be smaller than 5 seconds in meter
bus operation to carry out a proper limitation. Refer to the technical documentation TV-SK 6311
EB 5476 EN 71
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Installation
for details on which listed heat meters fulfill this criterion and can be used for limitation pur-
poses.
In case of battery-operated heat meters in particular, please note that some makes react with
communication intervals if they are polled too frequently. Other makes could use up their bat-
teries too quickly. The technical documentation TV-SK 6311 provides more details on these
matters.
4 A system with simultaneous room heating and DHW heating requires maximum energy.
4 A system with a fully charged storage tank which performs only room heating requires less
energy.
4 A system which suspends room heating during DHW heating requires less energy.
As a result, three different maximum limit values can be specified:
4 Max. limit value to determine the absolute upper limit
4 Max. limit value for heating for exclusive operation of the room heating
4 Max. limit value for DHW for exclusive operation of the DHW heating
In all systems without DHW heating or without heating circuit, only the Max. limit value for the
flow rate or capacity can be set.
Flow rate limitation
The settings which are to made for the flow rate limitation are mainly contained in function
block FB30 as function block parameters. Only after selecting the type of limitation “At“ for out-
door temperature dependent limitation (which automatically means a 4-point characteristic),
four outdoor temperature dependent maximum limits for heating need to be set in the 4-point
characteristic menu. After selecting “- - -“, set Maximum limit for the system, Maximum limit for
heating and Maximum limit for DHW, Minimum limit and the Limiting factor that appear in this
order. The Limiting factor determines how strongly the controller responds when the limit values
are exceeded in either direction.
Function
WE
Configuration
FB29 = ON
Meter bus
OFF
254**
1434
Cont
Meter bus address for WMZ 1 to 3 (ST.-NO) / 0 to 255
Model code WMZ 1 to 3 / 1434, CAL3, APAtO, SLS
Reading mode WMZ 1 to 3 / 24h, Cont, CoiL
** WE for WMZ2 and 3: 255
72 EB 5476 EN
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Appendix
Function
WE
Configuration
Flow rate limitation
OFF
FB30 = ON
At/---
3
3
2.0 m
h
h
h
h
Maximum limit / 0.01 to 650 m
h
3
3
2.0 m
Maximum limit for heating* / 0.01 to 650 m
h
3
3
2.0 m
Maximum limit for DHW / 0.01 to 650 m
h
3
3
2.0 m
1.0
Minimum limit/ 0.01 to 650 m
Limiting factor / 0.1 to 10.0
h
*
Does not need to be set on selecting “At“
Parameter*
WE
Range of values
Maximum limit for heating, points 1 to 4
Parameter only needs setting with FB30 = ON, select “At“
2.0 m3/h 0.01 to 100 m3/h
*
Capacity limitation
The settings which are to made for the capacity limitation are mainly contained in function block
FB31 as function block parameters. Only after selecting the type of limitation “At“ for outdoor
temperature dependent limitation (which automatically means a 4-point characteristic), four
outdoor temperature dependent maximum limits for heating need to be set in the 4-point char-
acteristic menu. After selecting “- - -“, set Maximum limit for the system, Maximum limit for heat-
ing and Maximum limit for DHW, Minimum limit and the Limiting factor that appear in this order.
The Limiting factor determines how strongly the controller responds when the limit values are ex-
ceeded in either direction.
Function
WE
Configuration
FB29 = ON
Meter bus
OFF
254**
1434
Cont
Meter bus address for WMZ 1 to 3 (ST.-NO) / 0 to
255
Model code WMZ 1 to 3 / 1434, CAL3, APAtO, SLS
Reading mode WMZ 1 to 3 / 24h, Cont, CoiL
Capacity limitation
OFF
FB31 = ON
15 kW
15 kW
15 kW
1.0
Maximum limit / 0.01 to 6000 kW
Maximum limit for heating* / 0.1 to 6000 kW
Maximum limit for DHW / 0.1 to 6000 kW
Limiting factor / 0.1 to 10.0
*
Does not need to be set on selecting “At“
** WE for WMZ2 and 3: 255
Parameter*
WE
Range of values
0.1 to 6000 kW
Maximum limit for heating, points 1 to 4
15 kW
EB 5476 EN 73
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Installation
Parameter*
WE
Range of values
*
Parameter only needs setting with FB31 = ON, select “At“
9.5 Memory module
The use of a memory module (accessory no. 1400-7142) is particularly useful to transfer all
data from one TROVIS 5476 Controller to several other TROVIS 5476 Controllers. The memory
module is plugged into the RJ-12 jack integrated into the front panel. Once the module has
been connected, “76 SP“ is displayed. If the memory module already contains data from a dif-
ferent TROVIS 5476 Controller, press the enter key until “SP 76" is displayed.
4 Pressing the enter key to confirm “76 SP“ causes the controller settings to be transferred to
the memory module.
4 Pressing the enter key to confirm “SP 76“ causes the saved controller settings to be trans-
ferred from the memory module to the controller.
During the data transfer, the bars on the display indicate the progress. After the display stops,
remove the memory module from the controller.
10 Installation
The controller consists of the housing with the electronics and the back panel with the terminals.
fastening screw (1) at the front and separate the controller housing from the back of the control-
ler.
Panel mounting
1. Make a cut-out of 138 x 91 mm (width x height) in the control panel.
2. Insert the controller housing through the panel cut-out and turn the two plastic clamps (2)
on the front panel by 90°.
4. Fit the controller housing back on.
Wall mounting
1. If necessary, bore holes with the specified dimensions in the appropriate places.
2. Fasten the back panel with four screws.
Perform steps 3. and 4. as describe for panel mounting
Top hat rail mounting
1. Fasten the spring-loaded hook (4) at the bottom of the top hat rail (3).
2. Slightly push the controller upwards and pull the upper hooks (5) over the top hat rail.
Perform steps 3. and 4. as describe for panel mounting
74 EB 5476 EN
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Electrical connection
11 Electrical connection
!
Caution!
For electrical installation, you are required to observe the relevant electrotechnical regulations
of the country of use as well as the regulations of the local power suppliers. Make sure all electri-
cal work is performed by trained and experienced personnel!
Notes on installing the electrical connections
4 Install the 230 V power supply lines and the signal lines separately! To increase noise immu-
nity, observe a minimum distance of 10 cm between the lines. Make sure the minimum dis-
tance is also observed when the lines are installed in a cabinet.
4 The lines for digital signals (bus lines) and analog signals (sensor lines, analog outputs) must
also be installed separately!
4 In plants with a high electromagnetic noise level, we recommend to use shielded cables for
the analog signal lines. Ground the shield at one side, either at the control cabinet inlet or
outlet, using the largest possible cross-section. Connect the central grounding point and the
PE grounding conductor with a cable ≥10 mm² using the shortest route.
4 Inductances in the control cabinet, e.g. contactor coils, are to be equipped with suitable in-
terference suppressors (RC elements).
4 Control cabinet elements with high field strength, e.g. transformers or frequency converters,
should be shielded with separators providing a good ground connection.
Overvoltage protection
4 If signal lines are installed outside buildings or over large distances, make sure appropriate
surge or overvoltage protection measures are taken. Such measures are indispensable for
bus lines!
4 The shield of signal lines installed outside buildings must have current conducting capacity
and must be grounded on both sides.
4 Surge diverters must be installed at the control cabinet inlet.
Connecting the controller
The controller is connected as illustrated in the following wiring diagrams.
If individual inputs for other functions, e.g. for binary input, it must be configured in the configu-
Open the housing to connect the cables. To connect the feeding cables, make holes in the
marked locations at the top, bottom or back of the rear part of the housing and fit suitable cable
glands.
76 EB 5476 EN
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Electrical connection
Connecting the sensors
Cables with a minimum cross-section of 2 x 0.5 mm² can be connected to the terminals at the
back panel of the housing.
Connecting the actuators
Connect cables with at least 1.5 mm² suitable for damp locations to the terminals of the control-
ler output. The direction of travel needs to be checked at start-up.
4 Set slide switch to (+). Valves must open.
4 Set slide switch to (–). Valves must close.
Connecting the pumps
Connect all cables with at least 1.5 mm² to the terminals of the controller as illustrated in the corre-
Legend for wiring plans:
AF
RF
Outdoor temperature sensor
Room temperature sensor
Flow temperature sensor
Storage tank sensor
SLP
TLP
UP
ZP
Storage tank charging pump
Heat exchanger charging pump
Heating circulation pump
DHW circulation pump
Control circuit
VF
SF
RüF
Return flow temperature sensor
RK
BE
TWF DHW sensor
Binary input
GND Grounding of input signals
L + N Mains supply
WMZ Heat meter connection
ZB
CP
Meter bus interface
Solar circuit pump
CF
Solar circuit collector sensor
Connections on the back of the controller, showing pump management as an example
Refer to the instructions of the
pump manufacturer for further
installation conditions.
EB 5476 EN 77
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Electrical connection
Systems Anl 1 to 3
Potentiometer
1 to 2 kΩ
1)
Free
For 0 to 20 mA
2)
50 Ω connected in
parallel
Option:
Type 5244
Type 5257-5
System Anl 4
Potentiometer
1 to 2 kΩ
1)
Free
For 0 to 20 mA
2)
50 Ω connected in
parallel
Option:
Type 5244
Type 5257-5
78 EB 5476 EN
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Electrical connection
Systems Anl 5 to 7
Potentiometer
1 to 2 kΩ
1)
Free
For 0 to 20 mA
2)
50 Ω connected in
parallel
Option:
Type 5244
Type 5257-5
System Anl 8
Potentiometer
1 to 2 kΩ
1)
Free
For 0 to 20 mA
2)
50 Ω connected in
parallel
Option:
Type 5244
Type 5257-5
EB 5476 EN 79
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Electrical connection
System Anl 9
Potentiometer
1 to 2 kΩ
1)
Free
For 0 to 20 mA
2)
50 Ω connected in
parallel
Option:
Type 5244
Type 5257-5
System Anl 11
Potentiometer
1 to 2 kΩ
1)
Free
For 0 to 20 mA
2)
50 Ω connected in
parallel
Option:
Type 5244
Type 5257-5
80 EB 5476 EN
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Appendix
12 Appendix
12.1 Function block list
FB Function
WE Anl Comments
0
Optimization
OFF
FB0 = ON: Optimization active; when FB0 = ON also FB13 =
ON
1
2
Adaptation
OFF
OFF
FB1 = ON: Adaptation active; when FB1 = ON also FB13 = ON
Flash adaptation
FB2 = ON: Flash adaptation active; when FB2 = ON also
FB13 = ON
3
Summer mode
OFF
FB3 = ON: Summer mode active
Function block parameters:
Start summer mode / 01.01 to 31.12 (01.06)
End summer mode / 01.01 to 31.12 (30.09)
Outdoor temperature limit / 0 to 30 °C (18 °C)
4
Delayed outdoor
temperature
adaptation
OFF
FB4 = ON: Temperature adaptation active
Ab:
Active when outdoor temperature drops
AufAb: Active when outdoor temperature increases or drops
Function block parameter:
Delay / 0.2 to 6 °C/h (3 °C/h)
5
6
7
Automatic summer ON
time/winter time
changeover
FB5 = ON: Changeover active
Public
OFF
2
FB6 = ON: Public holiday and vacation data entered also
to applies to DHW heating
11
holidays/vacation
data for DHW
Thermal
disinfection
OFF 2, 3, FB7 = ON: Thermal disinfection active; when FB7 = ON also FB14
4, 5, = ON
7, 8,
9,11
Function block parameter:
Day of week / 1 to 7 (Mon to Sun), 1–7 (3)
8
Priority for DHW
circuit
OFF 4, 5, FB8 = ON: Priority active
6, 7,
8,
11
Ab:
In:
Priority through set-back operation
Priority through reverse control
Function block parameter:
Activate priority in case of deviation / 2 to 10 min (10 min)
EB 5476 EN 81
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Appendix
FB Function
WE Anl Comments
9
Parallel pump
operation
OFF 2, 3, FB9 = ON: Parallel pump operation
9
Select (Anl 2 and 9):
PU: Parallel pump operation
US: Operation with switchover valve
Function block parameter (on selecting: US):
Stop parallel oper. in case of deviation / 2 to 10 min (10 min)
FB9 = OFF: Intermediate heating after 20 min
Select (FB9 = ON, US or FB9 = OFF):
20: Intermediate heating after 20 min
– –: No intermediate heating
10 Control mode
three-step RK1
ON All FB10 = ON: Three-step signal control mode
Function block parameters:
KP (proportional gain) / 0,1 to 50 (0,5)
T
N (reset time) / 1 to 999 s (200 s)
TY (valve transit time) / 15, 30, 45 to 240 s (90 s)
Pump lag time / 1 x TY to 10 x TY (2 x TY)
FB10 = OFF: On/off control; when FB10 = OFF also FB11 = OFF
Function block parameter:
Hysteresis / 1 to 30 °C (5 °C)
11 Limit deviation for OFF All FB11 = ON, only when FB10 = ON: Limitation active
OPEN signal RK1
Function block parameter:
Max. deviation / 2 to 10 °C (2 °C)
12 Limit deviation for OFF
OPEN signal RK2
4
to
11
FB12 = ON, only when FB17 = ON: Limitation active
Function block parameter:
Max. deviation / 2 to 10 °C (2 °C)
13 Room sensor RF
OFF All FB13 = ON: Sensor/remote operation activated
Cannot be selected when FB0, FB1 or FB2 = ON;
when FB0, FB1 and FB2 = OFF the room temperature is only
indicated and not used for the control
14 Storage tank sensor ON 2, 3, FB14 = ON: Sensor SF1 activated
SF1
5, 7,
8, 9,
11
Storage tank thermostat: FB14 = FB15 = OFF
15 Storage tank sensor ON 2, 3, FB15 = ON: Sensor SF2 activated
SF2
with 4, 5,
3, 5, 7, 8,
8,11 9,11
Select: --: Settings for plants with DHW heating in storage tank
charging system with 2 storage tank sensors
CF: Activated for solar circuit
Storage tank thermostat: FB14 = FB15 = OFF
82 EB 5476 EN
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Appendix
FB Function
WE Anl Comments
OFF All FB16 = ON; select: P1000: Pt 1000 and Pt 100 sensors*
ntc: NTC and Pt 100 sensors*
16 Sensor selection
FB16 = OFF: PTC and Pt 100 sensors*
* A mixture of both types of sensor is possible
17 Control mode
three-step RK2
ON 4, 5, FB17 = ON: Three-step signal control mode
6, 7,
8, 9,
11
Function block parameters:
KP (proportional gain) / 0.1 to 50 (0,5)
T
N (reset time) / 1 to 999 s (Anl 5, 6: 60 s; Anl 4: 200 s)
TY (val. transit time) / 15, 30 to 240 s (Anl 5, 6: 30 s; Anl 4: 90 s)
FB17 = OFF: On/off control
Function block parameter:
Hysteresis / 1 to 30 °C (5 °C)
18 Outdoor
temperature –
current input
OFF All FB18 = ON: Current input to measure outdoor temperature
activated
Select: 0: 0 to 20 mA = –20 to 50 °C
4: 4 to 20 mA = –20 to 50 °C
A 50-Ω resistor must be connected to terminals 7 (+) and GND
(terminals ½) in parallel to the current signal
FB18 = OFF: Sensor input for measuring outdoor temperature
19 4-point
OFF
FB19 = ON: Characteristic according to four points
FB19 = OFF: Characteristic according to gradient
characteristic
20 Return flow sensor ON All FB20 = ON: Return flow sensor activated
RüF1
Function block parameter:
Limiting factor / 0.1 to 10 (1)
Selection with systems Anl 2, 7 and 9:
SLP (thermometer and heat exchanger icons) switched on de-
pending on return flow temperature or SLP switched on irrele-
vant of return flow temperature
Setting only possible after entering key number!
21 Return flow sensor OFF 4, 5, FB21 = ON: Return flow sensor RüF2 activated
RüF2
11
Function block parameter:
Limiting factor / 0,1 to 10 (1)
Selection with system Anl 5:
SLP (thermometer and heat exchanger icons) switched on de-
pending on return flow temperature or SLP switched on irrele-
vant of return flow temperature
Setting only possible after entering key number!
EB 5476 EN 83
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Appendix
FB Function
WE Anl Comments
22 Current input for
flow rate
OFF All FB22 = ON: Current input active
Select: 0: 0 to 20 mA signal feedforwarding
measurement
4: 4 to 20 mA signal feedforwarding
A 50-Ω resistor must be connected to terminals 15 (+) and GND
(terminals ½) in parallel to the current signal
FB22 = OFF: Pulse input active
Setting only possible after entering key number!
23 Flow rate or
capacity limitation
OFF All FB23 = ON and FB22 = OFF: Limitation with pulse input
Function block parameters:
Max. limit value / 3 to 500 pulse/h (500 pulse/h)
Limiting factor / 0.1 to 10 (1)
Max. limit value for DHW / 3 to 500 pulse/h
(500 pulse/h)
Limiting factor / 0,1 to 10 (1)
FB23 = ON and FB22 = ON: Limitation with current input
Function block parameters:
Upper measuring range / 0.01 to 650 m3/h (10.00 m3/h)
Min. limit value / 0.01 to 650 m3/h (0.01 m3/h)
Max. limit value / 0.01 to 650 m3/h (9 m3/h)
Setting only possible after entering key number!
The following function blocks are in the second level
24 Potentiometer input OFF
FB24 = ON: Potentiometer input connected at terminal 12
(0) 1 to 2 kΩ
FB24 = OFF: Type 5244 or 5257-5 Room Panel connected
25 Release for
(1) control/external
demand over BE1
OFF
1
FB25= ON: Configuration of BE1
to Select: FErn: Release for control
11* bEd: Demand of a minimum flow temperature
Function block parameter:
Min. flow temperature for external demand / 20 to 130 °C (20 °C)
* Not Anl 4, 5 and 9 with solar system or Anl 11 with VF3
26 Circulation pump
(2) (ZP)
OFF 2 to FB26 = ON: Circulation pump operation acc. to time schedule
11
FB26 = OFF: ZP operation switches off SLP
27 Flow sensor VF3
(3)
OFF 3, 8, FB27 = ON: Sensor activated
11
28 Pump management OFF All FB28 = ON: BA9 not active outside times-of-use
(4) UP1
FB28 = AUS: BA9 active outside times-of-use
84 EB 5476 EN
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Appendix
FB Function
WE Anl Comments
29 Meter bus
(5)
OFF All FB29 = ON: Meter bus communication activated
Function block parameters WMZ 1 to 3:
Meter bus address / 0 to 255 (WMZ1: 254; WMZ2, 3: 255)
Model code / 1434, CAL3, APAtO, SLS (1434)
Reading mode / 24h, Cont CoiL (Cont)
Setting only possible after entering key number!
30 Flow rate limitation OFF All FB30 = ON: Flow rate limitation activated
(6)
Select: At: Outdoor temperature dependent limitation,
FB19 = ON when “At“ selected
---: Fixed limitation
Function block parameters:
Max. limit / 0.01 to 650 m3/h (2 m3/h)
Max. limit for heating* / 0.01 to 650 m3/h (2 m3/h)
Max. limit for DHW / 0.01 to 650 m3/h (2 m3/h)
Min. limit / 0.01 to 100 m3/h (---)
Limiting factor / 0.1 to 10 (1)
* Parameter does not need to be set when “At“ selected
Setting only possible after entering key number!
31 Capacity limitation OFF All FB31 = ON: Capacity limitation activated
(7)
Select: At: Outdoor temperature dependent limitation,
FB19 = ON when “At“ selected
---: Fixed limitation
Function block parameters:
Max. limit / 0.1 to 6000 kW (15 kW)
Max. limit for heating* / 0.1 to 6000 kW (15 kW)
Max. limit for DHW / 0.1 to 6000 kW (15 kW)
Limiting factor / 0.1 to 10 (1)
* Parameter does not need to be set when “At“ selected
Setting only possible after entering key number!
32 Circulation over
(8) heat exchanger
OFF 5, FB32 = ON: Control of DHW circuit remains released after
11 storage tank charging
Setting only possible after entering key number!
33 Sensor calibration ON All Cannot be deactivated
(9)
Setting only possible after entering key number!
34 Manual level
(10) locking
OFF All FB34 = ON: Locking activated
Setting only possible after entering key number!
35 Lock dial-up
(11)
OFF All FB35 = ON: No dial-up in case of fault
Setting only possible after entering key number!
EB 5476 EN 85
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Appendix
FB Function
WE Anl Comments
All FB36 to 43 = ON: Binary input in error status register
36 BE8
(12)
to to
43
Select: StEIG: Fault indicated by rising edge/make contact
FALL: Fault indicated by negative edge/break contact
(19) BE1
44 Modem operation OFF All Select: 8-bit:
8-bit addressing
(20)
16-bit: 16-bit addressing
FB44 = ON: Modem function activated
Function block parameters:
Cyclical initialization In / 0 to 255 min (30 min)
Intervals between dialing PA / 0 to 255 min (5 min)
Modem timeout t0 / 0 to 99 min (5 min)
Dialing procedure/ PULS/ton (PULS)
Phone number of station GLT / 0 to 9, P, -; max. 23 characters
Setting only possible after entering key number!
45 Dial-up also upon OFF All FB45 = ON: Dial-up when faults exist/remedied
(21) corrected fault
FB45 = OFF: Dial up only when faults exist
Setting only possible after entering key number!
46 Phone number of
OFF All FB46 = ON: Dialing an alternative recipient
(22) alternative recipient
Function block parameters:
Number of dialing attempts An / 0 to 99 (5)
Phone number of alternative recipient / 0 to 9, P, -; max. 23 char.
Setting only possible after entering key number!
47 Fault alarm output OFF All FB47 = ON and FSr > 0: BA8 = ON
(23) BA8
Pump management for UP1 no longer available
Setting only possible after entering key number!
FB Function block, WE Default setting, Anl System code number
86 EB 5476 EN
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Appendix
12.2 Parameter list
Parameter designation
Range of values (default values)
Display
0
0
0
1
1
1
2
2
2
3
3
3
4
4
4
5
5
5
6
6
6
7
7
7
8
8
8
9
9
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Gradient, flow
0.2 to 3.2 (1.8)
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Level, flow
C
˚
–30 to 30 °C (0 °C)
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
4-point characteristic
Press key to set parameters
outdoor temperature, points 1 to 4
flow temperature, points 1 to 4
return flow temperature, points 1 to 4
flow rate, points 1 to 4,
capacity, points 1 to 4.
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
4-point characteristic, outdoor temperature
C
˚
Outdoor temperatures of the points 2, 3, 4 are marked by squares
below the numbers 2, 3, 4.
–30 to 20 °C
( point 1: –15 °C, point 2: –5 °C, point 3: 5 °C, point 4: 15 °C)
EB 5476 EN 87
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Appendix
Parameter designation
Range of values (default values)
Display
0
0
0
0
0
1
1
1
1
1
2
2
2
2
2
3
3
3
3
3
4
4
4
4
4
5
5
5
5
5
6
6
6
6
6
7
7
7
7
7
8
8
8
8
8
9
9
9
9
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
4-point characteristic, flow temperature
C
˚
Flow temperatures of the points 2, 3, 4 are marked by squares
below the numbers 2, 3, 4
20 to 130 °C
(point 1: 70 °C, point 2: 55 °C, point 3: 40 °C, point 4: 25 °C)
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
4-point characteristic, return flow temperature
C
˚
Return flow temperatures of the points 2, 3, 4 are marked by
squares below the numbers 2, 3, 4
20 to 90 °C
(point 1: 65 °C, point 2: 50 °C, point 3: 35 °C, point 4: 20 °C)
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
4-point characteristic, capacity
C
˚
Capacity of the points 2, 3, 4 are marked by squares below the
numbers 2, 3, 4
0.1 to 6000 kW
(point 1 to 4: 15 kW)
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
4-point characteristic, flow rate
m3/h
Flow rates of the points 2, 3, 4 are marked by squares below the
numbers 2, 3, 4.
0.01 to 100 m3/h
(point 1 to 4: 2 m3/h)
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
4-point characteristic, set-back difference
C
˚
Set-back difference of point 3 is marked by the square below the
number 3.
0 to 50 °C
(point 2 and 3: 20 °C)
88 EB 5476 EN
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Appendix
Parameter designation
Range of values (default values)
Display
0
0
0
0
0
1
1
1
1
2
2
2
2
3
3
3
3
3
4
4
4
4
4
5
5
5
5
5
6
6
6
6
6
7
7
7
7
7
8
8
8
8
8
9
9
9
9
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Maximum flow temperature
20 to 130 °C (90 °C)
C
˚
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Minimum flow temperature
20 to 130 °C (20 °C)
C
˚
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Set-back difference
0 to 50 °C (15 °C)
C
˚
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
OT deactivation value in reduced operation
–10 to 50 °C (15 °C)
C
˚
STOP
1
1
2
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Room set point
C
˚
0 to 40 °C (20 °C)
EB 5476 EN 89
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Appendix
Parameter designation
Range of values (default values)
Display
0
0
0
0
0
1
1
1
1
1
2
2
2
2
2
3
3
3
3
3
4
4
4
4
4
5
5
5
5
5
6
6
6
6
6
7
7
7
7
7
8
8
8
8
8
9
9
9
9
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Reduced room set point
0 to 40 °C (17 °C)
C
˚
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Sustained temperature
0 to 40 °C (15 °C)
C
˚
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Gradient of the heating characteristic, return flow
0.2 to 3.2 (1.2)
Can only be set after entering the key number!
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Level, return flow
C
˚
–30 to 30 °C (0 °C)
Can only be set after entering the key number!
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Max. return flow temperature
20 to 90 °C (65 °C)
C
˚
Can only be set after entering the key number!
90 EB 5476 EN
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Appendix
Parameter designation
Range of values (default values)
Display
0
0
0
0
0
1
2
3
3
3
3
3
4
4
4
4
4
5
5
5
5
5
6
6
6
6
6
7
7
7
7
7
8
8
8
8
8
9
9
9
9
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Min. return flow temperature
20 to 90 °C (65 °C)
C
˚
Can only be set after entering the key number!
1
2
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
OT deactivation value in rated operation
0 to 50 °C (22 °C)
C
˚
STOP
1
1
1
1
2
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Times-of-use for heating circuit
–> section 1.6
1
2
Public holidays
–> section 1.6.1
2
Vacations
–> section 1.6.2
EB 5476 EN 91
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Appendix
Parameter designation
Range of values (default values)
Display
System Anl 9, underfloor heating circuit
0
0
0
1
1
1
2
2
2
3
3
3
4
4
4
5
5
5
6
6
6
7
7
7
8
8
8
9
9
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Gradient, flow
0.2 to 3.2 (0.8)
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Level, flow
C
˚
–30 to 30 °C (–5 °C)
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
4-point characteristic
Press key to set parameters
outdoor temperature, point 1 to 4
flow temperature, point 1 to 4.
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
4-point characteristic, outdoor temperature
C
˚
Outdoor temperatures of the points 2, 3, 4 are marked by squares
below the numbers 2, 3, 4.
–30 to 20 °C
( point 1: –15 °C, point 2: –5 °C, point 3: 5 °C, point 4: 15 °C)
92 EB 5476 EN
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Appendix
Parameter designation
Range of values (default values)
Display
0
0
0
0
0
1
1
1
1
1
2
2
2
2
2
3
3
3
3
3
4
4
4
4
4
5
5
5
5
5
6
6
6
6
6
7
7
7
7
7
8
8
8
8
8
9
9
9
9
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
4-point characteristic, flow temperature
C
˚
Flow temperatures of the points 2, 3, 4 are marked by squares
below the numbers 2, 3, 4.
20 to 130 °C
(point 1: 50 °C, point 2: 40 °C, point 3: 35 °C, point 4: 20 °C)
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
4-point characteristic, set-back difference
C
˚
Set-back difference of point 3 is marked by the square below the
number 3.
0 to 50 °C
(point 2 and 3: 5 °C)
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Max. flow temperature
20 to 130 °C (50 °C)
C
˚
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Min. flow temperature
20 to 130 °C (20 °C)
C
˚
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Set-back difference
0 to 50 °C (5 °C)
C
˚
EB 5476 EN 93
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Appendix
Parameter designation
Range of values (default values)
Display
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Times-of-use for underfloor heating circuit
–> section 1.6
1
DHW heating
0
0
0
1
1
1
2
3
3
3
4
4
4
5
5
5
6
6
6
7
7
7
8
8
8
9
9
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
DHW heating ON
20 to 90 °C (45 °C)
C
˚
With systems Anl 2, 3, 5, 7, 8, 9 and 11
without solar circuit with a storage tank sensor SF1
2
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Hysteresis
C
˚
0 to 30 °C (5 °C)
2
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
DHW heating ON
20 to 90 °C (45 °C)
C
˚
With systems Anl 2, 3, 5, 7, 8, 9 and 11
with two storage tank sensors SF1 and SF2
or in systems with solar circuit
94 EB 5476 EN
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Appendix
Parameter designation
Range of values (default values)
Display
0
0
0
0
0
1
1
1
1
2
2
2
2
3
3
3
3
3
4
4
4
4
4
5
5
5
5
5
6
6
6
6
6
7
7
7
7
7
8
8
8
8
8
9
9
9
9
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
DHW heating OFF
20 to 90 °C (50 °C)
C
˚
With systems Anl 2, 3, 5, 7, 8, 9 and 11
with two storage tank sensors SF1 and SF2
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
DHW set point
20 to 90 °C (55 °C)
C
˚
Anl 4
Anl 6
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Charging temperature
20 to 90 °C (55 °C)
C
˚
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
End charging process
20 to 90 °C (53 °C)
C
˚
STOP
1
2
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Return flow limitation temperature during DHW heating
20 to 90 °C (65 °C)
C
˚
Can only be set after entering the key number!
EB 5476 EN 95
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Appendix
Parameter designation
Range of values (default values)
Display
0
0
0
0
0
1
1
1
1
2
2
2
2
3
3
3
3
4
4
4
4
4
5
5
5
5
5
6
6
6
6
6
7
7
7
7
7
8
8
8
8
8
9
9
9
9
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Heat exchanger inlet temperature limit
20 to 130 °C (120 °C)
C
˚
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Time schedule for DHW heating
–> section 1.6
Time schedule for circulation pump
–> section 1.6
Solar circuit pump ON
0 to 30 °C (10 °C)
START
C
˚
1
2
3
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Solar circuit pump OFF
0 to 30 °C (2 °C)
C
˚
STOP
96 EB 5476 EN
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Appendix
Parameter designation
Range of values (default values)
Display
0
0
0
1
2
3
3
3
4
4
4
5
5
5
6
6
6
7
7
7
8
8
8
9
9
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Solar charging OFF
20 to 90 °C (70 °C)
C
˚
STOP
1
2
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Station address (ST-NO)
1 to 247, 8 bit (255)
1 to 999, 16 bit (255)
ST.-NR
1
2
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Baud rate (BAUD)
150 to 9600 (9600)
BAUD
EB 5476 EN 97
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Appendix
12.3 Sensor resistance tables
Resistance values with PTC resistors
Type 5224 Outdoor Temperature Sensors, Type 5264 and Type 5265 Flow and Return Flow
Temperature Sensors, Type 5264 Storage Tank Temperature Sensors
°C –20 –10
0
10 20 25
30
40
50
60
70
80
90 100 110 120
694 757 825 896 971 1010 1050 1132 1219 1309 1402 1500 1601 1706 1815 1925
Ω
Type 5244 Room Sensor
°C 10
15
20
25
30
Switch position
, terminals 1 and 2
Ω
679 699 720 741 762
Resistance values with Pt 100 resistors
Suitable Pt 100 sensors include
4 Outdoor temperature sensor: Type 5225
4 Flow and return flow temperature sensors: Type 5204, Type 5205-47
4 Storage tank temperature sensor: Type 5205
4 Room temperature sensor: Type 5255
–35
–30
–25
–20
–15
–10
–5
0
5
10
°C
86.25
88.22
90.19
92.16
94.12
96.09
98.04 100.00 101.95 103.90
Ω
15
20
25
30
35
40
45
50
55
60
°C
105.85 107.79 109.73 111.67 113.61 115.54 117.74 119.40 121.32 123.24
Ω
65
70
75
80
85
90
95
100
105
110
°C
125.16 127.07 128.98 130.89 132.80 134.70 136.6. 138.50 140.39 142.29
Ω
115
120
125
130
135
140
145
150
°C
144.17 146.06 147.94 149.82 151.70 153.58 155.45 157.31
Ω
Resistance values with Pt 1000 resistors
Use the resistance values listed in the table for Pt 100 resistors and multiply them by 10. Suitable
Pt 1000 sensors include:
4 Outdoor temperature sensor: Type 5227-2
4 Flow and return flow temperature sensors: Types 5207, 5277-2 (thermowell required) and
5267-2
4 Storage tank temperature sensor: Types 5207, 5277-2 (thermowell required)
4 Room temperature sensor: Type 5257-1, room temperature sensor with remote control:
Type 5257-5
98 EB 5476 EN
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Appendix
12.4 Technical data
7 configurable inputs for sensors (Pt 100 and PTC or
Pt 100 and Pt 1000 or Pt 100 and NTC) or binary alarms
1 outdoor temperature input for sensor or current signal 4 (0) to 20 mA
1 flow temperature sensor input
Inputs
Sensor inputs
Binary inputs
Other inputs
BE1 optionally for releasing a control circuit or external demand
BE5 configurable for storage tank thermostat
Pulse or current input for capacity or flow rate limitation
Remote control to correct the room temperature and select the operating mode
Alternatively, potentiometer input 1 to 2 kΩor configurable for binary alarm
Three-step signals: Load 250 V AC, max. 2 A, min. 10 mA
On-off signals: Load 250 V AC, max. 2 A, min. 10 mA
Varistor suppression 300 V
Outputs
Control signal outputs
Binary outputs
Max. 4 outputs to control pumps,
load 250 V AC, max. 2 A, min. 10 mA, varistor suppression 300 V
2 reed relay outputs for controlling the speed of a circulation pump or for
fault indication, load max. 24 V, 100 mA
Interfaces
Serial RS-485 interface for connection to four-wire bus, protocol: Modbus
RTU, data format 8N1or serial RS-232-C interface for connection to a
modem; connection over RJ-12 jack
Option: Meter bus interface
Operating voltage
230 V AC (+ 10 %/–15 %), 48 to 62 Hz
Power supply failure: All parameter settings and configuration data are
stored in an EEPROM in the case of power failure
Power consumption
Temperature range
Approx. 3 VA
Operation: 0 to 40 °C (avoid long periods of heat) Storage: –20 to 60 °C
Degree and class of
protection
IP 40 according to IEC 529 and II according to VDE 0106
Degree of contamination 2 according to VDE 0110
Overvoltage category
Humidity rating
Noise immunity
Noise emission
Weight
II according to VDE 0110
F according to VDE 40040
According to EN 61000-6-1
According to EN 61000-6-3
Approx. 0.6 kg
EB 5476 EN 99
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Appendix
12.5 Customer data
Station
Operator
Relevant SAMSON office
System code number
Function block settings
0
1
2
3
4
5
6
7
8
9
10
22
34
46
11
23
35
47
12
24
36
13
25
37
14
26
38
15
27
39
16
28
40
17
29
41
18
30
42
19
31
43
20
32
44
21
33
45
Function block parameter settings
Function block parameters
Range of values
Start summer mode (FB3 = ON)
End summer mode (FB3 = ON)
Outdoor temperature limit (FB3 = ON)
Delay (FB4 = ON)
Freely configurable
Freely configurable
0 to 30 °C
0.2 to 6 °C/h
1 to 7, 1–7
Day of week (FB7 = ON)
Priority in case of deviation (FB8 = ON)
2 to 10 min
2 to 10 min
0.1 to 50
Stop parallel operation in case of deviation (FB9 = ON)
Proportional gain KP (FB10 = ON)
Reset time TN (FB10 = ON)
1 to 999 s
Valve transit time TY (FB10 = ON)
15 to 240 s
100 EB 5476 EN
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Appendix
Function block parameters
Range of values
1 x TY to 10 x TY
1 to 30 °C
2 to 10 °C
2 to 10 °C
0.1 to 50
Pump lag time (FB10 = ON)
Hysteresis (FB10 = AUS)
Max. system deviation (FB11 = ON)
Max. system deviation (FB12 = ON)
Proportional gain KP (FB17 = ON)
Reset time TN (FB17 = ON)
1 to 999 s
Valve transit time TY (FB17 = ON)
Hysteresis (FB17 = OFF)
15 to 240 s
1 to 30 °C
0.1 to 10
Limiting factor (FB20 = ON)
Limiting factor (FB21 = ON)
0.1 to 10
3 to 500 lmp
Maximum limit (FB22 = OFF and FB23 = ON)
Limiting factor (FB22 = OFF and FB23 = ON)
Maximum limit for DHW (FB22 = OFF and FB23 = ON)
Limiting factor (FB22 = OFF and FB23 = ON)
Upper measuring range (FB22 = FB23 = ON)
Minimum limit (FB22 = FB23 = ON)
Maximum limit (FB22 = FB23 = ON)
Meter bus address WMZ 1 (FB29 = ON)
Meter bus address WMZ 2 (FB29 = ON)
Meter bus address WMZ 3 (FB29 = ON)
Model code WMZ 1 (FB29 = ON)
Model code WMZ 2 (FB29 = ON)
Model code WMZ 3 (FB29 = ON)
Reading mode WMZ 1 (FB29 = ON)
Reading mode WMZ 2 (FB29 = ON)
Reading mode WMZ 3 (FB29 = ON)
Maximum limit (FB30 = ON)
h
h
0.1 to 10
3 to 500 lmp
0.1 to 10
0.1 to 650 m
0.1 to 650 m
0.1 to 650 m
3
h
3
h
3
h
0 to 255
0 to 255
0 to 255
1434, CAL3,
APAtO, SLS
24h, CONT, CoiL
3
0.01 to 650 m
0.01 to 650 m
0.01 to 650 m
0.01 to 650 m
h
h
h
h
3
Maximum limit for heating (FB30 = ON)
Maximum limit for DHW (FB30 = ON)
Minimum limit (FB30 = ON)
3
3
Limiting factor
0.1 to 10
EB 5476 EN 101
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Appendix
Function block parameters
Range of values
0.1 to 6000 kW
0.1 to 6000 kW
0.1 to 6000 kW
0.1 to 10
Maximum limit (FB31= ON)
Maximum limit for heating (FB31 = ON)
Maximum limit for DHW (FB31 = ON)
Limiting factor
Binary input BE8 in error status register (FB36 = ON)
Binary input BE7 in error status register (FB37 = ON)
Binary input BE6 in error status register (FB38 = ON)
Binary input BE5 in error status register (FB39 = ON)
Binary input BE4 in error status register (FB40 = ON)
Binary input BE3 in error status register (FB41 = ON)
Binary input BE2 in error status register (FB42 = ON)
Binary input BE1 in error status register (FB43 = ON)
Cyclic initialization In (FB44 = ON)
Rising/negative
Rising/negative
Rising/negative
Rising/negative
Rising/negative
Rising/negative
Rising/negative
Rising/negative
0 to 255 min
Modem dialing interval PA (FB44 = ON)
Modem timeout t0 (FB44 = ON)
0 to 255 min
0 to 99 min
Phone number of control station
Freely configurable
0 to 99
Number of dialing attempts An (FB46 = ON)
Phone number of alternative recipient (FB46 = ON)
Freely configurable
Parameter settings
Parameters
Gradient, flow
Level, flow
Range of values
0.2 to 3.2
–30 to 30 °C
4-point characteristic
Outdoor temperature
Flow temperature
Return flow temperature
Capacity
Point 1 Point 2 Point 3 Point 4
–30 to 20 °C
20 to 130 °C
20 to 90 °C
0.1 to 6000 kW
3
Flow rate
0.01 to 100 m
h
102 EB 5476 EN
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Appendix
Parameters
Range of values
0 to 50 °C
Set-back difference
Max. flow temperature
Min. flow temperature
Set-back difference
OT deactivation value in red. operation
Room set point
–
–
20 to 130 °C
20 to 130 °C
0 to 50 °C
–10 to 50 °C
0 to 40 °C
Reduced room set point
Sustained temperature
Gradient, return flow
Level, return flow
0 to 40 °C
0 to 40 °C
0.2 to 3.2
–30 to 30 °C
20 to 90 °C
20 to 90 °C
0 to 50 °C
Max. return flow temperature
Min. return flow temperature
OT deactivation value in rated operation
Underfloor heating, system Anl 9
Gradient, flow
0,2 to 3,2
Level, flow
–30 to 30 °C
4-point characteristic
Outdoor temperature
Flow temperature
Point 1 Point 2 Point 3 Point 4
–30 to 20 °C
20 to 130 °C
0 to 50 °C
Set-back difference
Max. flow temperature
Min. flow temperature
Set-back difference
DHW heating
–
–
20 to130 °C
20 to 130 °C
0 to 50 °C
DHW heating ON
20 to 90 °C
0 to 30 °C
Hysteresis
DHW heating OFF
20 to 90 °C
20 to 90 °C
20 to 90 °C
20 to 90 °C
DHW set point
Charging temperature
End charging process
EB 5476 EN 103
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Appendix
Parameters
Range of values
Return flow limitation temperature
during DHW heating
20 to 90 °C
Heat exchanger inlet temp. limit
Solar circuit pump ON
Solar circuit pump OFF
Solar charging OFF
20 to 130 °C
0 to 30 °C
0 to 30 °C
20 to 90 °C
Station address
1 to 247, 8 bit
1 to 999, 16 bit
Baud rate
150 to 9600
Time schedules for heating circuit and underfloor heating circuit (system Anl 9)
Heating circuit 1
Heating circuit 2 or
underfloor heating circuit (Anl 9)
Start – Stop (1)
Start – Stop (2)
Start – Stop (1)
Start – Stop (2)
Monday (1)
Tuesday (2)
Wednesday (3)
Thursday (4)
Friday (5)
Saturday (6)
Sunday (7)
Public holidays and vacations
Public holidays
Date
Vacations
Start – Stop
104 EB 5476 EN
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Appendix
Time schedules for DHW circuit and circulation pump
DHW circuit
Circulation pump
Start – Stop (1)
Start – Stop (2)
Start – Stop (1)
Start – Stop (2)
Monday (1)
Tuesday (2)
Wednesday (3)
Thursday (4)
Friday (5)
Saturday (6)
Sunday (7)
Frequently used abbreviations
AF
Anl
BA
BE
CF
CP
FB
GLT
KW
RK
Outdoor sensor
System
Binary output
RF
RüF
SF
SLP
TLP
Room sensor
Return flow sensor
Storage tank sensor
Storage tank charging pump
Heat exchanger charging pump
Binary input
Solar circuit collector sensor
Solar circuit pump
Function block
Building control station
Cold water
TW/TWE DHW (domestic hot water) heating
UP
VF
WW
ZB
Circulation pump
Flow sensor
Hot water
Control circuit
Meter bus
EB 5476 EN 105
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Appendix
EB 5476 EN 107
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Index
Index
D
4-point characteristic . . . . . . . . . . . . . . . 42 Day mode . . . . . . . . . . . . . . . . . . . . . . . . 8
A
DHW heating
B
C
Capacity limitation
E
Connection
F
Flow rate limitation
G
Cyclical initialization . . . . . . . . . . . . . . . 69 Gradient characteristic . . . . . . . . . . . . . . 41
H
108 EB 5476 EN
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Index
I
Installation
Interface
P
K
Public holidays. . . . . . . . . . . . . . . . . . . . 14
Pulse input
L
Limitation
R
Release control circuit
Room panel
Room sensors
M
Mode selector switch
N
O
EB 5476 EN 109
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Index
S
Times-of-use
Set-back operation
U
V
T
W
110 EB 5476 EN
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EB 5476 EN 111
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00:00
Temperatures
Heating
or
Operating level
(refer to section 1 for
operation)
Time schedule
DHW
Time schedule
Heating
Temperatures
DHW
Public holidays
and vacations
and
Current
00:00
Anl code
or
or
Modbus
Data
Parameter
level
(refer to section 2)
Configuration
level
(refer to section 2)
FB47
FB0
parameters
Heating
Data
DHW
Fig. 11 · Level structure of TROVIS 5476
112 EB 5476 EN
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SAMSON AG · MESS- UND REGELTECHNIK
Weismüllerstraße 3 · 60314 Frankfurt am Main · Germany
Phone: +49 69 4009-0 · Fax: +49 69 4009-1507
Internet: http://www.samson.de
EB 5476 EN
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