Samson 5100, 5179 User Manual

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Automation System TROVIS 5100 District Heating Controller TROVIS 5179

Electronics from SAMSON

Mounting and Operating Instructions

EB 5179 EN

Firmware version 1.2x Edition August 2005

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Disclaimer of liability

We are constantly developing our products and therefore, reserve the right to change the product or the information contained in this document at any time without notice.

We do not assume any liability for the accuracy or completeness of these mounting and operating instructions. Moreover, we do not guaranteethat thebuyer can use the product for an intended purpose. SAMSON rejects any liability for claims by the buyer, especially claims for compensation including lost profits or any other financial loss, except the damage was caused intentionally or by gross negligence. If an essential term of the contract is breached by negligence, SAMSON’s liability is limited to the foreseeable damage.

Safety instructions

The device may only be assembled, started up or operated by trained and

experienced personnel familiar with the product. Proper shipping and appropriate storage are assumed.

The controller has been designed for use in electrical power systems. For

wiring and maintenance, you are required to observe the relevant safety regulations.

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Contents

1 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.1 Operating elements. . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.1.1 Operating keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.1.2 Operating switches . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.2 Operating modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.3 Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.4 Displaying data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.5 Setting the controller time . . . . . . . . . . . . . . . . . . . . . . . 11

1.6 Setting the times-of-use . . . . . . . . . . . . . . . . . . . . . . . . 13

1.6.1 Copying the times-of-use . . . . . . . . . . . . . . . . . . . . . . . 15

1.6.2 Entering public holidays . . . . . . . . . . . . . . . . . . . . . . . . 16

1.6.3 Entering vacation periods . . . . . . . . . . . . . . . . . . . . . . . 18

2 Start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.1 Setting the system code number . . . . . . . . . . . . . . . . . . . . 20

2.2 Activating and deactivating functions. . . . . . . . . . . . . . . . . . 21

2.3 Changing parameters . . . . . . . . . . . . . . . . . . . . . . . . . 23

2.3.1 Enter key number . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.4 Configuring universal inputs . . . . . . . . . . . . . . . . . . . . . . 24

2.5 Calibrating sensors . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.6 Resetting to default values . . . . . . . . . . . . . . . . . . . . . . . 26

3 Manual operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4 Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

5 Functions of the heating circuit . . . . . . . . . . . . . . . . . . . . 38

5.1 Functioning principle . . . . . . . . . . . . . . . . . . . . . . . . . 38

5.2 Weather-compensated control . . . . . . . . . . . . . . . . . . . . . 38

5.2.1 Gradient characteristic . . . . . . . . . . . . . . . . . . . . . . . . 39

5.2.2 4-point characteristic . . . . . . . . . . . . . . . . . . . . . . . . . 39

5.3 Fixed set point control . . . . . . . . . . . . . . . . . . . . . . . . . 41

5.4 Differential temperature control using variable weighting factors. . . . . 41

5.5 Deactivation depending on outdoor temperature . . . . . . . . . . . . 42

5.5.1 OT deactivation value in rated operation . . . . . . . . . . . . . . . . 42

5.5.2 OT deactivation value in reduced operation . . . . . . . . . . . . . . 42

5.5.3 OT activation value in rated operation . . . . . . . . . . . . . . . . . 43

5.5.4 Summer mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

5.6 Delayed outdoor temperature adaptation. . . . . . . . . . . . . . . . 44

5.7 Outdoor temperature-dependent advance heating . . . . . . . . . . . 44

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Contents

5.8 Remote operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

5.9 Optimization with room sensor. . . . . . . . . . . . . . . . . . . . . 45

5.10 Flash adaptation . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

5.11 Adaptation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

5.12 Room temperature-dependent control . . . . . . . . . . . . . . . . . 48

5.13 Pump management . . . . . . . . . . . . . . . . . . . . . . . . . . 49

5.14 Releasing the heating circuit . . . . . . . . . . . . . . . . . . . . . . 50

5.15 Position feedback in pre-control circuit . . . . . . . . . . . . . . . . . 50

6 Functions of the DHW circuit. . . . . . . . . . . . . . . . . . . . . . 51

6.1 DHW heating in the storage tank charging system . . . . . . . . . . . 51

6.2 DHW heating in the storage tank system . . . . . . . . . . . . . . . . 53

6.3 Priority operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

6.3.1 Reverse control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

6.3.2 Set-back operation . . . . . . . . . . . . . . . . . . . . . . . . . . 56

6.4 Forced charging of the DHW storage tank . . . . . . . . . . . . . . . 56

6.5 Thermal disinfection of the DHW storage tank . . . . . . . . . . . . . 56

7 System-wide functions . . . . . . . . . . . . . . . . . . . . . . . . 58

7.1 Automatic summer time/winter time changeover . . . . . . . . . . . . 58

7.2 Frost protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

7.3 Forced operation of the pumps. . . . . . . . . . . . . . . . . . . . . 58

7.4 Return flow temperature limitation . . . . . . . . . . . . . . . . . . . 58

7.5 Condensate accumulation control . . . . . . . . . . . . . . . . . . . 60

7.6 Compensating for time delays . . . . . . . . . . . . . . . . . . . . . 60

7.7 Three-step control . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

7.8 On/off control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

7.9 Continuous-action control . . . . . . . . . . . . . . . . . . . . . . . 62

7.10 Forwarding the outdoor temperature . . . . . . . . . . . . . . . . . . 63

7.11 Flow rate/capacity limitation over a pulse input. . . . . . . . . . . . . 63

7.12 Locking manual level . . . . . . . . . . . . . . . . . . . . . . . . . 65

8 Operational faults . . . . . . . . . . . . . . . . . . . . . . . . . . 66

8.1 Error list/sensor failure . . . . . . . . . . . . . . . . . . . . . . . . 66

8.2 Collective error alarm . . . . . . . . . . . . . . . . . . . . . . . . . 67

8.3 Temperature monitoring . . . . . . . . . . . . . . . . . . . . . . . . 69

8.4 Monitoring the input terminals for limit violations . . . . . . . . . . . . 70

8.5 Error status register . . . . . . . . . . . . . . . . . . . . . . . . . . 71

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Contents

8.6 Error alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

8.6.1 Sending text message in case of a fault alarm . . . . . . . . . . . . . 73

8.6.2 Sending fax in case of a fault alarm . . . . . . . . . . . . . . . . . . 73

9 Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

9.1 RS-232-C system bus interface . . . . . . . . . . . . . . . . . . . . 76

9.2 RS-232/RS-485 system bus interface (for four-wire bus) in combination with

cable converters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

9.3 Description of communication parameters to be adjusted . . . . . . . . 78

9.4 Meter bus interface . . . . . . . . . . . . . . . . . . . . . . . . . . 80

9.4.1 Activating the meter bus . . . . . . . . . . . . . . . . . . . . . . . . 80

9.4.2 Flow rate/capacity limitation using meter bus. . . . . . . . . . . . . . 81

9.5 LON communication. . . . . . . . . . . . . . . . . . . . . . . . . . 83

9.6 Requesting/processing an external demand . . . . . . . . . . . . . . 84

9.7 Sending outdoor temperatures and controller time . . . . . . . . . . . 85

10 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

11 Electrical connection. . . . . . . . . . . . . . . . . . . . . . . . . . 89

12 Appendix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

12.1 Function block lists. . . . . . . . . . . . . . . . . . . . . . . . . . . 96

12.2 Parameter list . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

12.3 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

12.4 Sensor resistance tables . . . . . . . . . . . . . . . . . . . . . . . 128

12.5 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

12.6 Customer data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

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Operation

1 Operation

The controller is ready for use with the temperatures and operating schedules preset by the manufacturer. On start-up, the current time and date need to be set at the controller (–> section 1.5).

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

Changeover key

Press to switch between operating level and configuration/parameter level

Reset key

Press to reset accessible parameters to their default settings; the controller must be in the parameter level

Arrow keys

– To scroll within levels – To change values

Enter key

– To access levels – Access parameters and functions to edit them – Confirm settings – Display set points in info level

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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

Rated operation Reduced operation Manual operation: Control valve opens - stationary - closes

(for on/off control: + ON, 0 OFF)

DHW circuit mode selector switch

The operating mode icon stickers are included in the scope of delivery and can be stuck on the front above the mode selector switch for control circuit 2 (middle), if required.

Automatic mode Rated operation DHW heating OFF Manual operation: Control valve opens - stationary - closes

(for on/off control: + ON, 0 OFF)

Note! In manual mode, frost protection is not guaranteed.

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Operation

The assignment of the control circuits to the mode selector switches depends on the system code number (Anl):

System

(Anl)

Top Middle Bottom 1 Heating circuit 1 Heating circuit 2 Pre-control circuit 2 Heating circuit 1 DHW heating Heating circuit 2 3 Heating circuit 1 Heating circuit 2 Heating circuit 3/Pre-control

4 Heating circuit 1 DHW heating Pre-control circuit 5 Heating circuit 1 DHW heating Heating circuit 2/Pre-control

6 Heating circuit 1 Heating circuit 2 Heating circuit 3 7 Heating circuit 1 DHW heating Pre-control circuit 8 Heating circuit 1 DHW heating Heating circuit 2/Pre-control

9 Heating circuit 1 DHW heating Heating circuit 2

10 Heating circuit 1 DHW heating Heating circuit 2

Mode selector switch

circuit

1.2 Operating modes

Day mode (rated operation)

Regardless ofthe programmed times-of-use and summer mode,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.

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1.3 Display

Operation

During operation, the display indicates the current time as well as informationabout 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.

The controller status can be displayed in the operating level (InF level) (–> section 1.4).

1 2

3 4

5 6

1 Automatic operation 2 Day mode

(rated operation)

3 Night mode

(reduced operation) 4 Vacation mode 5 Public holiday mode 6 Frost protection 7 Malfunction

10 11 12 1413 15

8 Circulation pump RK1–3 9 Valve RK1–3 or

Primary valve: OPEN or DHW: OPEN

10 Valve RK1–3 or

Primary valve: CLOSED or DHW: CLOSED

11 Storage tank charging

pump SLP

10 11 12 13 14 15 16 17 18 19123456789 0212223240

452

12 DHW storage tank 13 Circulation pump ZP 14 DHW demand 15 Exchanger charging pump

TLP

16 Time-of-use

Fig. 1 · Icons

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Operation

1.4 Displaying data

Measured values, set points, times-of-use, public holidays and vacation periods can be re trieved and displayed in the section 11.4.

InF1: Heating circuit 1

InF2: Heating circuit 2

InF3: Heating circuit 3

InF4: DHW heating

InF5: Primary control circuit

InF6: Does not exist

InF7: LON communication

InF8: Error status register/sensor failure

InF9: Communication

PU: Pumps, manual level

bIn-E: Binary inputs and outputs

Error: Alarms

Proceed as follows:

Select information level (–> Fig. 10 on page 141). Confirm information level. Select value you want to change. Compare the set point/limit value and the actual value. Press keys simultaneously:

to switch to the operating level.

InF1toInF9

information levels. The various displays are listed in

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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.

Proceed as follows:

9876543210

242322212019181716151413121110

Switch to configuration and parameter level. Display:

PA1

9876543210

242322212019181716151413121110

Select PA5 parameter level.

Open PA5 parameter level. Display: Controller time

Activate editing mode for the controller time

blinks.

Change controller time.

9876543210

242322212019181716151413121110

Confirm controller time. Display: Date (day.month)

Activate editing mode for the controller date. Change date setting.

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Operation

9876543210

242322212019181716151413121110

Confirm date. Display: Year.

Activate editing mode for the controller year. Change year setting. Confirm year. Exit PA5 parameter level. Return to the operating level.

Note!

The controller automatically returns to the operating level if the keys are left unpressed for two minutes.

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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 just one time-of-use is required, the start and stop times of the second time-of-use must be programmed to identical times. The time schedules for the three heating circuits, DHW heating and the circulation pump can be read over Modbus. Pump circuits are treated as mixer circuits.

Time schedule Parameter level Icon Heating circuit 1 to 3 PA1 to PA3 DHW heating PA4 Circulation pump PA4

Parameters

Period/day 1–7 1–7, 1, 2, 3, 4, 5, 6, 7 with 1–7 = every day,

Start first time-of-use 07:00 0:00 to 24:00h; in steps of 30 minutes Stop first time-of-use 12:00 0:00 to 24:00h; in steps of 30 minutes Start second time-of-use 12:00 0:00 to 24:00h; in steps of 30 minutes Stop second time-of-use 22:00 0:00 to 24:00h; in steps of 30 minutes * Default settings (WE) valid for heating circuits 1 to 3

WE* Range of values

1 = Monday, 2 = Tuesday, ..., 7 = Sunday

Proceed as follows:

9876543210

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

242322212019181716151413121110

Switch to configuration and parameter level. Display:

PA1

Select parameter level. Open parameter level.

Select datapoint for times-of-use.

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Operation

9876543210

242322212019181716151413121110

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 = every day, 1 = Monday, 2 = Tuesday, ..., 7 = Sunday

9876543210

242322212019181716151413121110

Activate editing mode for period/day.

START

Display shows:

; blinks

Edit start time (steps of 30 minutes).

9876543210

242322212019181716151413121110

Confirm start time. Display shows:

STOP

Edit stop time (steps of 30 minutes).

STOP

Confirm stop time. Display shows:

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.

End

Select

on the display. Exit the datapoint for times-of-use. Exit the parameter level. Return to the operating level.

Note!

Do not use the 1–7 datapoints to check the programmed times-of-use. Otherwise, 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 two minutes.

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Operation

1.6.1 Copying the times-of-use

The times-of-use of heating circuit 1 (2) can be copied and used for heating circuit 2 (3).

Copy function Parameter level Icon HK1 –> HK2 PA1

HK2 –> HK3 PA2

Proceed as follows:

Switch to configuration and parameter level. Display:

Select parameter level. Open parameter level. Select “COPY_“ data point. Open copy program.

The display blinks. Copy the times-of-use. Select Exit the parameter level. Return to the operating level.

PA1

End

on the display.

COPY2 COPY3

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Operation

1.6.2 Entering public holidays

On public holidays, the times-of-use specified for Sunday apply. A maximum of 20 public holi days may be entered.

Parameters

Public holidays f. heating circuit 1 – PA1 / 01.01 to 31.12 Public holidays f. heating circuit 2 – PA2 / 01.01 to 31.12 Public holidays f. heating circuit 3 – PA3 / 01.01 to 31.12

WE Level / Range of values

Note!

The programmed public holidays and vacations of any heating circuit (HK1, HK2 or HK3) ap ply with the setting Co4 -> Fb12 = ON , select 1, 2 or 3 also for the DHW heating.

Proceed as follows: Switch to configuration and parameter level.

Display:

PA1

Select parameter level. Open parameter level.

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 shows:

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.

Exit the parameter level. Return to the operating level.

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Operation

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.

Note!

The controller automatically returns to the operating level if the keys are left unpressed for two minutes.

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Operation

1.6.3 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.

Parameters

Vacation period for heating circuit 1 – PA1 / 01.01 to 31.12 Vacation period for heating circuit 2 – PA2 / 01.01 to 31.12 Vacation period for heating circuit 3 – PA3 / 01.01 to 31.12

Note!

The programmed public holidays and vacations of any heating circuit (HK1, HK2 or HK3) ap ply with the setting Co4 -> Fb12 = ON , select 1, 2 or 3 also for the DHW heating.

Proceed as follows: Switch to configuration and parameter level.

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

To enter additional vacation periods, re-select the steps in the fields highlighted in gray.

Exit the parameter level.

WE Level / Range of values

Display:

PA1

Select parameter level. Open parameter level. Select datapoint for vacation periods.

Display shows: Open datapoint for vacation periods.

Display shows If applicable, select

: START

– – – –

Activate editing mode for vacation periods.

blinks. Set start date of vacation period. Confirm start date of the vacation period.

Display shows:

STOP

Set end of vacation period. Confirm end of the vacation period.

––––

(between 31.12 and 01.01) and repeat

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Operation

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.

Deleting vacation periods:

Select the vacation period you wish to delete in the datapoint for vacation periods. Confirm selection. Select

– – – –

Delete vacation period.

Note!

The controller automatically returns to the operating level if the keys are left unpressed for two minutes.

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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 system code number. The different schematics are dealt with in section 4. Available controller 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).

The system code number is set in the configuration level.

Proceed as follows:

Switch to configuration and parameter level. Display shows:

Select

Anl

Activate editing mode for the system code number.

Anl

blinks on the display. Edit system code number. Confirm system code number.

Display shows: Return to the operating level.

PA1

_ on the display.

Co1

Note!

The controller automatically returns to the operating level if the keys are left unpressed for two minutes.

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Start-up

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. For more details on function blocks, refer to section 12.1.

The functions are grouped by topics:

Co1: Heating circuit 1

Co2: Heating circuit 2

Co3: Heating circuit 3

Co4: DHW heating

Co5: System-wide functions

Co6: Sensor initialization

Co7: LON communication

Co8: Error initialization

Co9: Communication

Proceed as follows:

Switch to configuration and parameter level. Display shows:

Select configuration level. Open configuration level. Select function block. Activate editing mode for the function block.

Fb_ blinks on the display.

0 0 0 0

If section 2.3.1

Activate the 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 the function block (Fb = OFF).

PA1

appears on the display, the key number needs to be entered first. Refer to

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Start-up

Confirm settings. 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, repeat the steps in the fields highlighted in gray.

Exit configuration level. Return to the operating level.

Note!

The controller automatically returns to the operating level if the keys are left unpressed for two 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.

The parameters are grouped by topics:

PA1: Heating circuit 1

PA2: Heating circuit 2

PA3: Heating circuit 3

PA4: DHW heating

PA5: System-wide parameters

PA6: Does not exist

PA7: LON communication

PA8: Does not exist

PA9: Communication

Proceed as follows:

Switch to configuration and parameter level. Display shows:

Select parameter level. Open parameter level. Select parameter. Activate editing mode for the parameter. Edit the parameter. Confirm the parameter setting.

To adjust additional parameters, repeat the steps in the fields highlighted in gray.

Exit parameter level. Return to the operating level.

PA1

Note!

The controller automatically returns to the operating level if the keys are left unpressed for two minutes.

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Start-up

2.3.1 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 for initial start-up can be found on page 137. To avoid unauthorized use of the key number, remove the page or make the key number unreadable.

Proceed as follows:

0 0 0 0

The key number remains active for approx. 10 minutes.

blinks on the display. Set valid key number. Confirm key number.

When the correct key number is entered, the function block that is to be changed blinks on the display. On entering an incorrect key number, the controllers switches to the next configuration level.

2.4 Configuring universal inputs

The connected sensors are calibrated in Co6 configuration level. The following applies:

Co6 -> Fb00 = ON: Pt 100/Pt 1000 sensors (default setting)

Co6 -> Fb00 = OFF: Pt 100/PTC sensors

The resistance values of the sensors can be found on page 128. Each universal input can be configured separately. The following inputs Ni 200/1000, PTC, NTC, Pt 100/1000, (0/4...20) mA, (0–10 V) can be configured as function block parameters. The function blocks 01 to 17 correspond to the binary inputs BE1 to BE17 in the terminal wiring plan (page 92 onwards). The function block for the required sensor is activated and the function block parameter selected which corresponds to the type of input signal.

2.5 Calibrating sensors

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

24 EB 5179 EN

Page 25

Start-up

erence temperature) measured directly at the point of measurement. Sensor calibration is to be activated in Co6 via function block Fb23.

Proceed as follows:

Switch to configuration and parameter level. Display shows:

PA1

Select Co6 level. Open Co6 level. Display shows:

Fb00

Select function block Fb23. Confirm selection. Display shows:

0 0 0 0

Enter and confirm key number. Fb23 blinks on the display.

Activate editing mode for function block. Activate function block. Start sensor calibration. Select the function block for the sensor that you want to calibrate:

The function blocks Fb01 to Fb17 correspond to the inputs in the terminal wiring plan (page 92 onwards) e.g. Fb02 = BE2

Activate editing mode for function block. Fb_ blinks on the display.

Display measured value. Activate editing mode for measured value.

Measured value blinks on the display. Correct measured temperature. Read the actual temperature directly from the ther

mometer at the point of measurement and enter this value as the reference tempera

ture. Confirm corrected measured temperature.

Additional sensors are calibrated similarly.

End

Select

. Exit configuration level. Return to the operating level.

EB 5179 EN 25

Page 26

Start-up

Note! The sensor values adjusted are not reset by the Loading default settings function.

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!

When the key number is active, thefunction blocksprotected bythe key number are also reset to their default settings. The controller isready foroperation with its default settings. You just need to set the correctdate and current time.

26 EB 5179 EN

Page 27

Manual operation

3 Manual operation

Switch to manual mode to configure all outputs (see wiring diagram in section 11).

Proceed as follows:

Position all selector mode switches to +, 0 or –. Select

pump manual level. Open pump manual level. Select pump PU1 to PU5:

PU1: BA11 PU2: BA12 PU3: BA13 PU4: BA14 PU5: BA15

Confirm pump selection. The display blinks.

Activate output: Deactivate output:

Confirm setting. The modified values remain active as long as the controller is in manual mode.

Move slide switch from 0, + or –. Exit manual level.

Note! In manual mode, frost protection is not guaranteed.

EB 5179 EN 27

Page 28

Systems

4 Systems

There are 10 hydraulic schematics.

System code number (Anl) Heating Outdoor temperature compensated flow temperature

Number of heating circuits 2231231222 No. of heating circuits w. mixing valve 2221131122

DHW heating • •• ••••

From the primary circuit ••• From the secondary circuit ••• •

12345678910

control with variable return flow temperature limitation

28 EB 5179 EN

Page 29

System Anl 1

Systems

BE BA AE RK

prim

sek

HK1

UP1 UP2

RüF

RüF1 RK

RF1VF1

HK2

VF2

RüF2

RF2

Default setting

AF2AF1

EB 5179 EN 29

Page 30

Systems

System Anl 2

BE BA AE RK

RüF

prim

sek

HK1

UP1 UP2

RüF1 RK

RF1VF1

HK2

VF2

RüF2

RF2

Default setting

Co1 -> Fb00 = OFF (without RF1) Co1 -> Fb01 = OFF (without RüF1) Co1 -> Fb02 = ON (with AF1) Co2 -> Fb00 = OFF (without RF2) Co2 -> Fb01 = OFF (without RüF2) Co2 -> Fb02 = OFF (without AF2) Co4 -> Fb00 = ON (with SF1) Co4 -> Fb01 = ON (with SF2) Co4 -> Fb03 = ON (with VFS, with VFT) Co5 -> Fb00 = ON (with VFsek) Co5 -> Fb01 = ON (with RüFprim)

AF2AF1

30 EB 5179 EN

Page 31

System Anl 3

Systems

prim

sek

UP1 UP2

HK1

RüF1 RK

RüF2

VF2 VF3

HK2

RF1VF1

RF2 UP3

BE BA AE RK

RüF

Default setting

Co1 -> Fb00 = OFF (without RF1)* Co1 -> Fb01 = OFF (without RüF1) Co1 -> Fb02 = ON (with AF1) Co2 -> Fb00 = OFF (without RF2)* Co2 -> Fb01 = OFF (without RüF2) Co2 -> Fb02 = OFF (without AF2) Co5 -> Fb00 = ON (with VFsek) Co5 -> Fb01 = ON (with RüFprim)

* Only for optimization and temperature reading

AF2AF1

EB 5179 EN 31

Page 32

Systems

System Anl 4

SLP

SF2

BE BA AE RK

RüF

prim

sek

HK1

UP1

RüF1 RK

RF1VF1

VFT

RüFTW

TLP

VFS

Default setting

Co1 -> Fb00 = OFF (without RF1) Co1 -> Fb01 = OFF (without RüF1) Co1 -> Fb02 = ON (with AF1) Co4 -> Fb00 = ON (with SF1) Co4 -> Fb01 = ON (with SF2) Co4 -> Fb02 = OFF (without RüFTW) Co4 -> Fb03 = ON (with VFS, with VFT) Co5 -> Fb00 = ON (with VFsek) Co5 -> Fb01 = ON (with RüFprim)

Set Co4 -> Fb11 = ON if the instrumentation represented by the broken line is required.

AF1

SF1

32 EB 5179 EN

Page 33

System Anl 5

Systems

SLP

SF2

BE BA AE RK

RüF

prim

sek

UP1

RüF1 RK

HK1

RF1VF1

UP2

VF2

VFT

RüFTW

TLP

VFS

Default setting

Co1 -> Fb00 = OFF (without RF1)* Co1 -> Fb01 = OFF (without RüF1) Co1 -> Fb02 = ON (with AF1) Co4 -> Fb00 = ON (with SF1) Co4 -> Fb01 = ON (with SF2) Co4 -> Fb02 = OFF (without RüFTW) Co4 -> Fb03 = ON (with VFS, with VFT) Co5 -> Fb00 = ON (with VFsek) Co5 -> Fb01 = ON (with RüFprim)

* Only for optimization and temperature reading

Set Co4 -> Fb11 = ON if the instrumentation represented by the broken line is required.

AF1

SF1

EB 5179 EN 33

Page 34

Systems

System Anl 6

BE BA AE RK

UP1

sek

HK1

RüF1

RüF2

VF2

UP2

RF1VF1

HK2

RF2

UP3

VF3

HK3

Default setting

Co1 -> Fb00 = OFF (without RF1) Co1 -> Fb01 = OFF (without RüF1) Co1 -> Fb02 = ON (with AF1) Co2 -> Fb00 = OFF (without RF2) Co2 -> Fb01 = OFF (without RüF2) Co2 -> Fb02 = OFF (without AF2) Co3 -> Fb00 = OFF (without RF3) Co3 -> Fb01 = OFF (without RüF3) Co3 -> Fb02 = OFF (without AF3) Co5 -> Fb00 = ON (with VFsek)

RüF3

RF3

AF3AF2AF1

34 EB 5179 EN

Page 35

System Anl 7

Systems

SF2

SF1

ZPSLPRüF

BE BA AE RK

prim

sek

HK1

VF1

RF1 TLP

VFTRüF1

RüFTWUP1

VFS

Default setting

Set Co4 -> Fb11 = ON if the instrumentation represented by the broken line is required.

AF1

EB 5179 EN 35

Page 36

Systems

System Anl 8

SF2

SF1

ZPSLPRüF

BE BA AE RK

prim

sek

HK1

VF1

UP2

RF1 TLP

VF2

VFTRüF1

RüFTWUP1

VFS

Default setting

Set Co4 -> Fb11 = ON if the instrumentation represented by the broken line is required.

AF1

36 EB 5179 EN

Page 37

System Anl 9

Systems

SF2

SF1

AF1

ZPSLP

BE BA AE RK

HK1

VF1

UP2

RF1 TLP

HK2

RüF2

VF2

RF2

VFTVFsek RüF1

RüFTWUP1

VFS

Default setting

Co1 -> Fb00 = OFF (without RF1) Co1 -> Fb01 = OFF (without RüF1) Co1 -> Fb02 = ON (with AF1) Co2 -> Fb00 = OFF (without RF2) Co2 -> Fb01 = OFF (without RüF2) Co2 -> Fb02 = OFF (without AF2) Co4 -> Fb00 = ON (with SF1) Co4 -> Fb01 = ON (with SF2) Co4 -> Fb02 = OFF (without RüFTW) Co4 -> Fb03 = ON (with VFS, with VFT) Co5 -> Fb00 = ON (with VFsek)

Set Co4 -> Fb11 = ON if the instrumentation represented by the broken line is required.

AF2

EB 5179 EN 37

Page 38

Systems

System Anl 10

prim

sek

HK1

UP1

RüF1

UP2RK

RF1VF1

RüF2 RK

VF2

TLP SLP

HK2

RF2 VFT

VFS SF1

RüFTW

BE BA AE RK

Default setting

Co1 -> Fb00 = OFF (without RF1) Co1 -> Fb01 = OFF (without RüF1) Co1 -> Fb02 = ON (with AF1) Co2 -> Fb00 = OFF (without RF2) Co2 -> Fb01 = OFF (without RüF2) Co2 -> Fb02 = OFF (without AF2) Co4 -> Fb00 = ON (with SF1) Co4 -> Fb01 = ON (with SF2) Co4 -> Fb02 = OFF (without RüFTW) Co4 -> Fb03 = ON (with VFS, with VFT) Co5 -> Fb00 = ON (with VFsek) Co5 -> Fb01 = ON (with RüFprim)

SF2

AF1 AF2RüF

38 EB 5179 EN

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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 Functioning principle

The heating circuit with the highest flow set point has priority. This principle applies to all heat ing circuitswith mixing valves. In systems Anl3, 5 and 8, the pump circuit has priority. The flow set point of the heating circuit with priority is controlled by the valve in the pre-control circuit. If several heating circuits have the same flow set point, the heating circuit with lowest number al ways has priority and is controlled by the primary valve.

5.2 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 set point as a function of the outdoor temperature (–> Fig. 2).

C] t

[

130

120

110

100

20 16 12 8 4 0 -4 -8 -12 -16 -20

Fig. 2 · Gradient characteristics

3.2 2.9 2.6

2.4

2.2

2.0

tVLFlow temperature

1.8

1.6

1.4

1.2

1.0

0.8

0.4

0.2 t

[

Outdoor temperature

Function

WE Configuration

Outdoor sensor AF1, 2, 3 Co1, 2, 3 -> Fb02 = ON*

* Co1 -> Fb02 cannot be deactivated

EB 5179 EN 39

Page 40

Functions of the heating circuit

If just one outdoor sensor should be connected, connect it to AF1. This outdoor temperature is then used also for HK2 and HK3.

5.2.1 Gradient characteristic

Basically, the following rule applies: a decrease in the outdoor temperature causes the flow tem perature to increase. By varying the teristic to your individual requirements. Increasing ture, decreasing 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 =

Max. flowtemperature

The 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:

Old building, radiator design 90/70: Gradient approx. 1.8

New building, radiator design 70/55: Gradient approx. 1.4

New building, radiator design 55/45: Gradient approx. 1.0

Underfloor heating depending on arrangement: Gradient smaller 0.5

Functions

4-point characteristic OFF Co1, 2, 3 -> Fb10 = OFF 4-point characteristic OFF Co5 -> Fb03 = OFF (Anl 3, 5, 8 and 10)

Parameters

Gradient, flow 1.8 PA1, 2, 3 / 0.4 to 3.2 Level, flow 0 °C PA1, 2, 3 / –30 to 30 °C Set-back difference 20 °C PA1, 2, 3 / 0 to 50 °C Min. flow temperature 90 °C PA1, 2, 3 / 20 to 130 °C Max. flow temperature 20 °C PA1, 2, 3 / 20 to 130 °C

Gradient

in alower flowtemperature. Theparameter

Flow set point–Set-back difference

and

Gradient

Min. flowtemperature

and

Level

parameters, you can adapt the charac

Gradient

parameters markthe upperand lowerlim

WE Configuration

WE Parameter level / Range of values

results in a higher flow tempera

Level

performs aparallel

5.2.2 4-point characteristic

The 4-point characteristic allows you to define your own heating characteristic. It is defined by 4 points for the

. The

temperature

is reduced outside the times-of-use.

40 EB 5179 EN

Set-back difference

Outdoor temperature

at points 2 and 3 indicates how much the flow temperature

, the

Flow temperature

and the

Return flow

Page 41

The

Max. flowtemperature

its of the flow temperature.

[˚C]

100

VLmax

90 80 70 60 50 40 30

VLmin

20 10

Fig. 3 · 4-point characteristic

and

Min. flowtemperature

Functions of the heating circuit

parameters markthe upperand lowerlim

P1 to 4 Points 1 to 4 t

...min Minimum t ...max Maximum t

[˚C]20 15 10 5 0 –5 –10 –15 –20

Flow temperature Outdoor temperature

VL 4-point characteristic Reduced 4-point characteristic

Functions

WE Configuration 4-point characteristic OFF Co1, 2, 3 -> Fb10 = ON 4-point characteristic OFF Co4 -> Fb03 = ON (Anl 3, 5, 8 and 10)

Parameters

Flow temperature Point 1

Point 2 Point 3 Point 4

Outdoor temperature Point 1

Point 2 Point 3 Point 4

Return flow temperature Point 1

Point 2 Point 3 Point 4

WE Parameter level / Range of values

PA1, 2, 3 / 20 to 130 °C

70 °C 55 °C 40 °C 25 °C

PA1, 2, 3 / –30 to 90 °C

–15°C – 5 °C

5 °C

15 °C

PA1, 2, 3 / 20 to 90 °C

65 °C 50 °C 35 °C

20 °C Set-back difference Points 2, 3 20 °C PA1, 2, 3 / 0 to 50 °C Max. flow temperature 90 °C PA1, 2, 3 / 20 to 130 °C Min. flow temperature 20 °C PA1, 2, 3 / 20 to 130 °C

EB 5179 EN 41

Page 42

Functions of the heating circuit

Note! The 4-point characteristic function can only be activated when the Adaptation function is not

active (Co1, 2, 3 -> Fb07 = OFF).

5.3 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

and

flow temperature

Parameters

Max. flow temperature 90 °C PA1, 2, 3 / 20 to 130 °C Min. flow temperature 20 °C PA1, 2, 3 / 20 to 130 °C Set-back difference 20 °C PA1, 2, 3 / 0 to 50 °C

Maximum flow temperature

WE Parameter level / Range of values

Set-back difference

parameters are set to identical values.

. Both

Minimum

5.4 Differential temperature control using variable weighting factors

This function allows the return flow temperature to be taken into account in addition to the flow temperature. It can only be used in heating circuits with mixing valves. The difference between the flow and return flow temperature is specified using the

temperature difference

parameter. It is a measure for the energy consumption in a heating circuit. Thegreater the temperature difference, the larger the energy required by a heating circuit. If the actual temperature difference is not the same as the intended temperature difference, it is evaluated by the

Kp factor for differential temperature control

. After initial signs for a deviation occur, the flow temperature is raised or reduced by this factor. When the

Kp factor for differential temperature control

is set to 0, the return flow temperature does not have any affect on the control of the flow temperature. When the

Kp factor for differential temperature control

is set to 1, a pure return flow tempera ture limitation takes place (–> section 7.4). The reset time T control circuit (the larger T

Intended temperature difference

The

determines how fast the deviation of the temperature difference affects the

is, the slower the rate in change).

parameter is maintained at a constant value by adjusting the speedof theassociated circulation pump in the heating circuit. The pump is controlled by an analog 0 to 10 V signal, which is appliedto the associated analog output (AA) of the controller (AA1 to AA3). The control signal is displayed in the associated info level. When the differential temperature control without return flow limitation is active, the actual temperature of the return flow is nevertheless displayed. After pressing the enter key, the set point is displayed together with the string "S-r" (for differential temperature control using variable weighting factors).

Intended

42 EB 5179 EN

Page 43

Functions of the heating circuit

Function

Differential temperature control using variable weighting factors

Parameters

Max. return flow temperature* 65 °C PA1, 2, 3 / 20 to 90 °C Min. return flow temperature* 20 °C PA1, 2, 3 / 20 to 90 °C * Can only be selected when Co5 -> Fb01 = ON,

WE Configuration OFF

Co1, 2, 3 -> Fb18 = ON

0.5

Proportional gain factor K Reset time T

200 s

Intended temp. difference / 0 to 40 °C

20 °C

Analog value max. / 0 to 100 %

90 %

Analog value min. / 0 to 100 %

30 % WE Parameter level / Range of values

select:

steig

/ 1 to 999 s

/0.1 to 999

Note!

Only one function can be assigned to an analog output (e.g. flow temperature control, passing on the outdoor temperature or differential temperature control).

5.5 Deactivation depending on outdoor temperature

5.5.1 OT deactivation value in rated operation

If theoutdoor temperature exceeds the limit heating circuit is put out of service immediately. The valve is closed and the pump is switched off aftert=2x

Valve transit time

. When the outdoor temperature falls below this value (less 0.5 °C hysteresis), heating operation is restarted immediately. With thedefault settings, this means that, during thewarm season, the system is switched off at an outdoor temperature of 22 °C.

Parameter

OT deactivation value in rated operation

OT deactivationvalue in rated operation

WE Parameter level / Range of values 22 °C PA1, 2, 3 / 0 to 90 °C

, theaffected

5.5.2 OT deactivation value in reduced operation

If the outdoor temperature in reduced operation exceeds the limit

duced operation

and the pump is switched off aftert=2x

, the affected heating circuit is put out of service immediately. The valve is closed

Valve transit time

OT deactivation value in re

EB 5179 EN 43

Page 44

Functions of the heating circuit

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 10 °C to save energy. Nevertheless, remember that the system requires some time in the morning to heat up the building (–> Outdoor temperature-dependent advance heating, section 5.7).

Parameter

OT deactivation value in reduced operation

WE Parameter level / Range of values 10 °C PA1, 2, 3 / –10 to 50 °C

5.5.3 OT activation value in rated operation

If a heating circuit is in reduced operation (automatic mode), the circuit is automatically trans ferred to rated operation when the outdoor temperaturefalls belowthe limit

in rated operation

. When the limit value is exceeded (plus 0.5°C hysteresis),reduced operation

OT activation value

is restarted. This function is activated at very low temperatures to avoid the building cooling down exces-

sively outside the times-of-use when low outdoor temperatures occur.

Parameter

OT activation value in rated operation

WE Parameter level / Range of values –15 °C PA1, 2, 3 / –30 to 50 °C

5.5.4 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

two consecutive days, summer mode is activated on the following day: the heating is switched off. If the mean daytime temperature remains below the

on the next day, summer mode is deactivated on the following day.

mode

Functions

Summer mode OFF

WE Configuration

Co1, 2, 3 -> Fb11 = ON

01.06

Start summer mode / 01.01 (1 Jan) to 31.12 (31 Dec)

30.09

Stop summer mode / 01.01 to 31.12

18 °C

Outdoor temperature limit in summer mode / 0 to 30 °C

Outdoor temperature limit in summer

44 EB 5179 EN

Page 45

Functions of the heating circuit

Note!

Summer mode only becomes effective when the controller is in automatic mode ( ).

5.6 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

Delay

steps. Assuming a

of 3 °C/h, the adaptation would take

Note!

The delayed outdoor temperature adaptation helps avoid unnecessary overloads of central heating stationsin combination with either overheated buildings occurring, forexample, due to warm winds, or temporarily insufficient heating due to the outdoor sensor being exposed to direct sunshine. In the operating level, the outdoor temperature blinks on the display whiledelayed outdoortemperature adaptation is active. The calculated outdoor temperature is displayed.

°°12

Function

Delayed outdoor temperature adaptation

WE Configuration

OFF

Co5 -> Fb04 = ON

When outdoor temperature drops

Auf Ab

When outdoor temperature drops or rises

3 °C/h

Delay / 0.2 to 6.0 °C/h

5.7 Outdoor temperature-dependent advance heating

The controller activates the heating depending on the outdoor temperature before the time-of-use starts in normal operation. The

Advance heating time

perature of –12 °C. The advance heating time is shorter when the outdoor temperature is higher.

Functions

Optimization OFF

Outdoor sensor AF1, 2, 3 Co1, 2, 3 -> Fb02 = ON

WE Configuration

Co1, 2, 3 -> Fb05 = ON,

120 min

Advance heating time / 0 to 360 min

is based on an outdoor tem

Select: 1

EB 5179 EN 45

Page 46

Functions of the heating circuit

5.8 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 options to influence the control process:

Selection of the operating mode: Automatic mode · Day mode · Night mode

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, Flash adaptation or Room tem perature-dependent control functions have been activated.

Type 5244/5257-5

312

TROVIS

5179

Fig. 4 · Wiring plan for Type 5244/5257-5 Room Sensors/TROVIS 5179 Controller

Function

WE Configuration

Room sensor RF1, 2, 3 OFF Co1, 2, 3 -> Fb00 = ON

5.9 Optimization with room sensor

Both the following described functions should only be used when the room (reference room) in which the room sensor is located hasa typicalheating pattern similar to the rest ofthe building. In addition, there should be no thermostat valves mounted on the radiators in this reference room.

46 EB 5179 EN

Page 47

Functions of the DHW circuit

There are two types of optimization depending on the activation conditions:

Outdoor temperature-dependent advance heating, room temperature-dependent deacti

vation

The controller activates the heating depending on the outdoor temperature before the time-of-use starts in normal operation. The

Advance heating time

is based on an outdoor temperature of –12 °C. The advance heating time is shorter whenthe outdoortemperature is higher (see section 5.7).

Room temperature-dependent advance heating and deactivation

The controller calculates the required advance heating time (max. 6 hours) adapted to the building characteristics, resulting in the

Day set point

(rated room temperature) being reached in the reference room when the time-of-use starts. The heating is heated with the maximum flowtemperature duringthe advance heating phase. As soon as the

Day setpoint

is reached, weather-compensated control starts.

The controllerdeactivates the heating in both types of optimization dependingon the room sen sors upto twohours beforethe time-of-use finishes. The controller chooses the deactivation time such that the room temperature does not drop significantly below the desired temperature until the time-of-use ends. During the advance heating period and the premature deactivation of the heating system, the icons or blink on the display. Outside the times-of-use, the controller monitors the

set point

(reduced room temperature). When the temperature falls below the night set point, the

Night

controller heats with the max. flow temperature until the measured room temperature exceeds the adjusted value by 1 °C.

Note!

Direct sunshine can cause theroom temperatureto increaseand thusresult inthe prematurede activation of the heating system. When the room temperature decreases while the heating system is temporarily outside its times-of-use, this can prematurely cause the controllerto heatup to the adjusted

Function

Room sensor RF1, 2, 3 OFF Co1, 2, 3 -> Fb00 = ON

Outdoor temperature-dependent advance heating, room temperature-dependent deactivation:

Optimization OFF

Outdoor sensor AF1, 2, 3 Co1, 2, 3 -> Fb02 = ON

Room temperature-dependent advance heating and deactivation:

Optimization OFF

WE Configuration

Co1, 2, 3 -> Fb05 = ON,

120 min

Advance heating time / 0 to 360 min

Co1 to Co3 -> Fb05 = ON,

select: 2

select: 3

Room set point.

EB 5179 EN 47

Page 48

Functions of the DHW circuit

Parameters

Day set point 20 °C PA1, 2, 3 / 10 to 90 °C Night set point 17 °C PA1, 2, 3 / 10 to 90 °C Sustained temperature 10 °C PA1, 2, 3 / 10 to 90 °C

WE Parameter level / Range of values

5.10 Flash adaptation

Direct reactions to deviations in room temperature canbe achieved using the function block set ting: Co1, 2, 3 -> Fb08 = ON. Flash adaptation counteracts room temperature deviations by increasing or decreasing theflow

Level

temperature by up to 30 °C. The shift is displayed under

in PA1, 2, 3 parameter levels; it

cannot be altered. The set point correction over remote room panel is not possible.

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

Room sensor RF1, 2, 3 OFF Co1, 2, 3 -> Fb00 = ON Flash adaptation OFF Co1, 2, 3 -> Fb08 = ON

WE Configuration

5.11 Adaptation

The controller is capable of automatically adapting the heating characteristic to the building characteristics, provided a gradient characteristic has been set (Co1, 2, 3 -> Fb10 = OFF). The reference room, where the room sensor is located, represents the entire building and is moni tored to ensure that the

Day set point

ture in rated operation deviates from the adjusted set point, the heating characteristic is modi fied accordingly for the following time-of-use. Thecorrected value is displayed inPA1, 2, 3 pa rameter levels under

Functions

Room sensor RF1, 2, 3 OFF Co1, 2, 3 -> Fb00 = ON Outdoor sensor AF1, 2, 3 Co1, 2, 3 -> Fb02 = ON Adaptation OFF Co1, 2, 3 -> Fb07 = ON 4-point characteristic OFF Co1, 2, 3 -> Fb10 = OFF

Gradient, flow

is maintained. When the mean measured room tempera

WE Configuration

48 EB 5179 EN

Page 49

Appendix

Parameter

Day set point 20 °C PA1, 2, 3 / 10 to 90 °C

WE Parameter level / Range of values

5.12 Room temperature-dependent control

In systems Anl 6 and 9, the Room temperature-dependent control function can be separately activated for each heating circuit. The Roomsensor functionmust be activated for this function. Flow and return flow sensors only serveto display the temperature and can therefore be deacti vated.

The outdoor sensors are notrequired for the room control function, but are still required for the Frost protection function. The outdoor sensor AF1 can also be deactivated if all the control cir cuits are configured as room control circuits. Activation of the room control function causes the control parameters to be automatically set to the following settings:

(reset time) = 1617 s, TV(derivative-action time) = 330 s, KP(proportional gain) = 20

With the aid of Parameter optimization (Co1, 2, 3 -> Fb16 = ON), these settings are optimized. This,however, requiresa constant room temperature at the time when thefunction isactivated and a temperature difference between the current room temperature and the new room set point of at least 3 °C. In room control circuits, the heating circuit pump is switched on during the advance heating phase.

Note!

A fictive flow set point is reported to master controller in case there is a demand for an exter nally required signal when the room control function is active. This set point is calculated from the characteristic and outdoor temperature and adapted to the actual demand over adaptation and flash adaptation. The fictive flow set point has no effect on mixer circuits and blinks on the display. Just the third type of optimization is permitted when the room control is active.

Note! The frost protection cannot function without an outdoor sensor.

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Appendix

Functions

Room sensor RF1, 2, 3 OFF Co1, 2, 3 -> Fb00 = ON Room temperature dependent control OFF Co1, 2, 3 -> Fb06 = ON Parameter optimization OFF Co1, 2, 3 -> Fb16 Flow sensor OFF when room temperature

dependent control is used

WE Configuration

OFF Co1, 2, 3 -> Fb17

5.13 Pump management

To control the circulation pumps for the heating circuits (UP1 and UP2), reed relay outputs can be used instead of the relay output. Depending on the operatingstate, thecirculation pumpsrun during the times-of-use regulated depending on the differential pressure. The differential pres sure is regulated by the pumps. Outside the times-of-use the circulation pumps are switched back to the minimum speed. The binary outputs BA1 to BA4 have the following function:

BA1, BA3: Circulation pump on and off

BA2, BA4: Reduce pump speed

If thecirculation pump is to be switched on,the contact of BA1 or BA3 isclosed. The binary outputs BA2 and BA4 can be configured over the function blocks Co1, 2 -> Fb13.

Co1, 2 -> Fb13 = ON: BA2, BA4 = OFF outside the time-of-use

Co1, 2 -> Fb13 = OFF: BA2, BA4 = ON outside the time-of-use

Function

Pump management OFF Co1, 2 -> Fb13

WE Configuration

Note!

Refer to the pump manufacturer instructions for the exact terminal assignments of pumps since the terminal assignments vary depending on the pump. In systems Anl 3, 5, 8 and 10, the pumps of an uncontrolled heating circuit can be switched on and off over an external binary signal. For this purpose, deactivate the Potentiometer input function (Co1 to Co3 -> Fb12 = OFF) and select the function block parameter FrG-E.

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Appendix

5.14 Releasing the heating circuit

The release of the heating circuit in automatic mode is a default setting after the time schedule has been programmed. In addition, it is possible to release the heating circuit over the corre sponding potentiometer inputs. When no signal exists at these inputs and the slide switch of the heating circuit is positioned to automatic mode ( ), the heating circuit is in stand-by mode (i.e. just the frost protection is active).

Function

Potentiometer input for release of HK OFF Co1, 2, 3 -> Fb12 = OFF

WE Configuration

FrG-E: Release over binary signal (potentiometer) FrG-A: Release over time schedule with FrG-A:RLG: Configuration as per input

FREE: Input freely available

5.15 Position feedback in pre-control circuit

A potentiometer for position feedback (series resistor: 1000Ω) can be connected at terminal 27 instead of a potentiometer to shift the set point over the room sensor. The actual position of the valve in the pre-control circuit is issued as an external resistance value. The valve position is displayed in % of the travel in the operating level at the end of the control circuit data for the pre-control circuit (level 5).

Function

Potentiometer in pre-control circuit

WE Configuration OFF Co5 -> Fb16 = ON

Note!

The potentiometer input HK2 is not available when Co5 -> Fb16 = ON is configured.

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Functions of the DHW circuit

6 Functions of the DHW circuit

6.1 DHW heating in the storage tank charging system

SLP

VFS

VFT

TLP

Fig. 5 · DHW heating in a storage tank charging system

SF1

SF2

TLP Heat exchanger

VFS/VFT Flow sensors SLP Storage tank

SF1 Storage sensor 1 SF2 Storage sensor 2 ZP Circulation pump TW DHW KW Cold water

charging pump

Start storage tank charging

The controller begins charging the storage tank when the water temperature measured at sensor SF1 falls below the

DHW demand ON

by 0.1 °C. If the flow temperature in the system is higher than the required charging temperature, the controller attempts to reduce it in the heating circuit for maximum 3 minutes before the heat exchanger pump together with the storage tank charging pump start to run. When there is no heating operation or when the flow temperature in the system is lower, the heat exchangercharging pump is switched on immediately. The storagetank charging pump is switched on when the temperature currently measured at storage sensor VFT has reached the temperature measured at sensor SF1. If a storage tank thermostat is used, the storage tank charging pump is switched on when the temperature T =

Charging temperature

– 5 °C is reached at sensor VFT.

Note!

The charging temperature VFT is regulated by the primary valve in system Anl 2. In systems Anl 4,5 and 10, the chargingtemperature VFT is only regulatedby the primary valve when the DHW demand has the highest set point and has priority. In all other systems (Anl 7, 8and 9)the mixing valve regulates the charging temperature VFT.

When the Circulation pump function is active, the circulation pump remains in operation ac cording to the time schedule. The pump is switched off when this function is deactivated.

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System-wide functions

The Mixing valve always active function allows the heat exchanger to maintain the charging temperature using the mixing valve. The heat exchanger charging pump remains switched on and the return flow temperature is not limited outside the times-of-use.

When the flow sensor VFS is active, the set point in the heat exchanger charging circuit is af fected bythe system deviation in the storage tank charging circuit when the storage tankcharg ing pump is switched on: If the temperature measured at the flow sensor is smaller than the required charging tempera ture, the set point in the heat exchanger charging circuit is raised by 1 °C every minute. If the set point in the heat exchanger charging circuit reaches the value in

temperature

parameter, it is not raised any further; an

Err 10

alarm is generated.

Maximum charging

Stop storage tank charging

The controller stops charging the storage tank when the water temperature in the storage tank measured at sensor SF2 (

DHW demand OFF

) exceeds the set point by 0.1 °C. The primary valve (Anl 2) or the mixing valve in the DHW circuit are sent pulse signals until the heat exchanger charging temperature on the primary side at sensor VFT has fallen below the

exchanger charging pump deactivation limit

Heat

The heatexchanger charging pump is switchedoff according to the time schedule and depending on the temperature. When the flow set point of the primary heating circuit is lower than the

Heat exchanger charging pump deactivation limit

, the heat exchanger charging pump (TLP) is first switched off when the primary heat exchanger charging temperature at sensor VFT has dropped to the same level as the flow set point of the primary heating circuit. The heat exchanger charging pump is switched off at the latest aftert=2xTransit time of the primary valve.

The storage tank charging pump (SLP) is switched off aftert=2xTransit time of the primary valve or when the storage tank charging temperature in the secondary circuit at sensor VFS has fallen below the

Storage tank charging pump deactivation limit

The circulation pump is switched on and off according to a time schedule.

Functions

Storage sensor SF1 ON Co4 -> Fb00 = ON Storage sensor SF2 ON Co4 -> Fb01 = ON Flow sensor VFS ON Co4 -> Fb03 Circulation pump OFF Co4 -> Fb04 Storage tank system OFF Co4 -> Fb10 = OFF Mixing valve always active OFF Co4 -> Fb11

WE Configuration

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Appendix

Parameters

DHW demand ON 40 °C PA4 / 20 to 90 °C DHW demand OFF 45 °C PA4 / 20 to 90 °C Charging temperature 55 °C PA4 / 20 to 90 °C Heat exchanger charging pump

deactivation limit Storage tank charging pump

deactivation limit Maximum charging temperature 120 °C PA4 / 20 to 120 °C

WE Parameter level / Range of values

50 °C PA4 / 20 to 90 °C

6.2 DHW heating in the storage tank system

SLP Storage tank charging

SLP

Fig. 6 · DHW heating in storage tank system, applies to systems Anl 4, 5, 7, 8, 9 and 10

Anl 2: without three-way valve

VFS

SF1

Zirk.

pump SF1 Storage sensor 1 VFS Flow sensor ZP Circulation pump KW Cold water TW Domestic hot water (DHW) VL Flow RL Return flow

Start storage tank charging

The controller can be reconfigured for all systems with DHW heating to control a DHW storage tank with heating register (storage tank system).

The controller switches the storage tank charging pump (SLP) on and off and controls the mixing valve for the DHW circuit. A mixing valve in the DHW circuit does not exist in system Anl 2. The sensor VFS is connected to terminal 28 and the storage tank charging pump to terminal 45.

The controller starts the storage tank charging when the water temperature measured at sensor SF1 falls below the

DHW demand ON

by 0.1 °C. If the flow temperature in the systemis higher than the required charging temperature, the controller attempts to reduce it in the heating circuit for maximum three minutes before the storage tank charging pump starts to run.

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Appendix

When there is no heating operation or when the flow temperature in the system is lower, the storage tank charging pump is switched on immediately. If a storage tank thermostat is used, the storage tank charging pump is switched on when the temperature T =

Charging temperature

– 5 °C is reached at sensor VFS.

Note!

The charging temperatureVFS iscontrolled insystem Anl2 by the primary valve. In all the other systems (Anl 4, 5, 7, 8, 9 and 10) the mixing valve regulates the charging temperature VFS.

When the Circulations pump function is active, the circulation pump remains in operation ac cording to the time schedule. The pumps is switched off when this function is deactivated.

Stop storage tank charging

The controller stops charging the storage tank when the water temperature in the storage tank measured at sensor SF1 exceeds the temperature T =

Charging temperature+Hysteresis

0.1 °C. When there is no heating operation or when the flow temperature demandin thesystem is lower, the corresponding valve is closed.

The storage tank charging pump is switched off when the charging temperature at sensor VFS has fallen below the

= 2 x Transit time of the primary valve.

ter t

Storage tank charging pump deactivation limit;

however, at the latest, af-

In the default setting, the storage tank is charged by 5 °C to at least 50 °C when the storage tank temperature falls below 40 °C. The charging temperature is 55 °C. On completing the storage tank charging, the heating valve is closed and the charging pump continues to run until the charging temperature falls below 50 °C.

Functions

Storage sensor SF1 ON Co4 -> Fb00 = ON Storage tank system OFF Co4 -> Fb10 = ON Circulation pump OFF Co4 -> Fb04 Mixing valve always active OFF Co4 -> Fb11

WE Configuration

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Appendix

Parameters

DHW demand ON 40 °C PA4 / 20 to 90 °C Hysteresis 5 °C PA4 / 0 to 30 °C Charging temperature 55 °C PA4 / 20 to 90 °C Storage tank charging pump

deactivation limit

WE Parameter level / Range of values

50 °C PA4 / 20 to 90 °C

6.3 Priority operation

In many district heating systems with primary DHW heating, the allotted amount of wateris only intended to supply the heating system. As a result, the capacity required for DHW heating needs tobe taken from the heatingsystem when great heating loads occur;and this, until DHW heating has been concluded. Nevertheless, heating operation is not to be simply 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.

6.3.1 Reverse control

In all systems with DHW heating and at least one heating circuit with a control valve, the DHW heating can be given priority by applying a reverse control. With the setting Co4 -> Fb06 = ON, the charging temperature can be monitored. If the temperature also falls below the charging temperature after the time period set in function block Fb07 has elapsed, the heating circuit is closed and the set point remains the same. Which circuit is closed depends on how the system (Anl) is configured:

Anl 2: Heating circuit with the highest flow set point

Anl 4: Heating circuit

Anl 5: Heating circuit 1;

Switching off the pump heating circuit with Co4 -> Fb05 possible.

Anl 7: Pre-control circuit of heating

Anl 8: Pre-control circuit of heating

Anl 9: Heating circuit 1

Anl 10: Both heating circuits

Functions

Reverse control ON Co4 -> Fb06 = ON Time until reverse control ON Co4 -> Fb07*

WE Configuration

* Co4 -> Fb07 = ON: 2 minutes

Co4 -> Fb07 = OFF: 10 minutes

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6.3.2 Set-back operation

Appendix

In all systems with DHW heating and at least one heating circuit with control valve, DHW heat ing can be given priority by applying set-back operation. The charging temperature can be monitored with the setting Co4 -> Fb06= OFFand

Function

Reverse control ON

WE Configuration

Co4 -> Fb06 = OFF

0 °C

Activate priority in case of deviation / 0 to 30 °C

Activate priority in case of deviation

>0.

Note!

The priority operation is deactivated with the setting Co4 -> Fb06 = OFF and

case of deviation

= 0!

Activate priority in

6.4 Forced charging of the DHW storage tank

To provide the full room heating performance when the time-of-use of the heating circuits begins, existing storage tanks are charged one hour before the time-of-use of the heating circuits starts. For the individual controller, this means that storage tank charging is activated when the water temperature in the storage tank falls below the adjusted deactivation value of T =

demand ON

DHW circuit is not activated at the beginning of the time-of-use set for the heating circuit(s).

Hysteresis

. The forced charging of the storage tank does not take place when the

Note!

This function is not available when a storage tank thermostat is used.

DHW

6.5 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 theweek tion temperature.

the value in ends at the specified When the cycle, an by opening up Co4 -> Fb08. The alarm is automatically reset when the the following thermal disinfection cycle.

(1 to7) orevery day(0). The storage tank is heated up to the adjusted

The charging set point is always higher than the

Charging boost

Disinfection temperature

ERR-2

alarm is generated and blinks on the display. This alarm can be confirmed

. Disinfection begins at the adjusted

Stop time

has not been reached at the end of the thermal disinfection

Disinfection temperature

Start time

is properly reached during

and, at the latest,

Disinfec

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Appendix

Thermal disinfection for preventing legionella infection causes

high return flow temperatures during the disinfection cycle (return flow temperature limita

tion suspended), high storage temperatures after thermal disinfection has been concluded,

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.

Functions

Storage sensor SF1 ON Co4 -> Fb00 = ON Thermal disinfection OFF

WE Configuration

Co4 -> Fb08 = ON

70 °C

00:00 04:00

Day of the week / 1–7, 1, 2, ..., 7 with 1–7 = every day, 1 = Monday, ..., 7 = Sunday Disinfection temperature / 60 to 90 °C Charging boost / 0 to 30 °C

5 °C

Start time / 00:00h to 23:30h (in steps of 30 minutes) Stop time / 00:00h to 23:30h (in steps of 30 minutes)

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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 Sundayin Marchat 2.00h and on the last Sunday in October at 3.00h.

Function

Summer time/winter time changeover ON Co5 -> Fb05 = ON

WE Configuration

7.2 Frost protection

The Frost protection function does not work in manual mode. The heating system is automatically monitored for frost protection. The operation of a pump, a heating circuitor DHW circuit as a frost protection measureis indicated by on the display. If the outdoor temperature drops below 0 °C, the heating and circulation pumps are activated. The DHW storage tank is charged to 10 °C.

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 12.00h and 12.01h. This is done to avoid that the pumps get stuck when they are not operated for a longer periodof time.The forced operation of the storage tank or heat exchanger charging pump is operated between 12.01h and 12.02h.

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 RüFexceeds the point of the flow temperature (flow temperature of the heating system, charging temperature) is reduced. As a result, the primary flow rate isreduced and the return flow temperature falls. The set point reading (flow temperature of the heating system, charging temperature) blinks to indi cate that a return flow limitation is active.

Limitation factor

, the set

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System-wide functions

Function

Return flow sensor RüF1, 2, 3 OFF

Parameters

Max. return flow temperature 65 °C PA1, 2, 3 / 20 to 90 °C Min. return flow temperature 20 °C PA1, 2, 3 / 20 to 90 °C

In systems with a DHW in a secondary circuit, the control during DHW heating uses the

flow limitation temperature for DHW

WE Configuration

Co1, 2, 3 -> Fb01 = ON

1.0 WE Parameter level / Range of values

Limitation factor / 0 to 25.5

Return

parameter (systems Anl 2, 4, 5 and 10). In the transition time or in summer mode, the heating circuit can be operated with a lower return flow tempera ture while at the same time performing proper storage tank charging.

Return flowlimitation temperature for DHW

The

parameter canalso be active in systems Anl 4, 5, 7,8, 9 and 10 at a separate return flow sensor. Theseparate sensor RüFTW (return flow sen sor for DHW) must in this case be installed in the return flow of the DHW circuit.

Note!

In system Anl 2 , the sensor RüFprim is installed in the return flow of the primary circuit. In this case, the Return flow sensor, primary function must be activated (Co5 -> Fb01 = ON).

Function

Return flow sensor in DHW circuit OFF

Parameter

Return flow limitation temperature for DHW 45 °C PA4 / 20 to 90 °C

WE Configuration

Co4 -> Fb02 = ON

1.0 WE Parameter level / Range of values

Limitation factor / 0 to 25.5

Note!

To ensure that the preset return flow temperature limit 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.

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System-wide functions

7.5 Condensate accumulation control

Activate the Condensate accumulation control function to start up condensate accumulation plants, in particular to avoid problematic excess temperatures. The controller response to set point deviationswhich causethe primary valve to open is attenuated. The controller responseto set point deviations which cause the control valve to close remains unaffected.

In systems Anl 6 and 9, the limitation applies to all control valves; in all other systems, it applies to the control valve with the highest flow temperature set point.

In systems with DHW heating on the primary side (Anl 7 and 8), the Condensate accumulation

control function must configured separately under Co4.

Functions

Condensate accumulation control OFF

Condensate accumulation control (Anl 7 and 8)

Note!

The condensate accumulation control function can only be activated when no on/offcontrol has been configured, i.e. Co5 -> Fb14 = ON.

WE Configuration

Co5 -> Fb07 = ON

2 °C

Maximum system deviation / 2 to 10 °C Co4 -> Fb13 = ON

Maximum system deviation / 2 to 10 °C

7.6 Compensating for time delays

The controllerregulates the control circuit with the highest flow set pointwith the secondary flow sensor. If the sensor is placed on the secondary side directly downstream of the heat exchanger and the setting Co5 -> Fb06 = ON configured, any time delays due to changes in temperature at adistant flow sensor do notoccur anymore. This measure used witha condensate accumula tion control means that the control can intervene before the control valve releases unproportionally too much heat exchanger area.

Functions

Flow sensor, secondary VFsek ON Co5 -> Fb00 = ON Compensation of time delays OFF Co5 -> Fb06 = ON

WE Configuration

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System-wide functions

7.7 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 length increases as K

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

Transit time T

The

Reset time T

specifies the time required by the valve to travel through the range of 0 to

(the pause length increases as TNincreases).

100 %. The three-stepcontrol can be configured separately for individual heatingcircuits, for the DHW

heating and for the pre-control circuit.

Functions

Three-step control for heating circuit

Three-step control for DHW heating

Three-step control for pre-control circuit

WE Configuration ON

0.5 200 s 120 s 240 s

0.5 200 s 120 s

Co1, 2, 3 -> Fb15 = ON K

(proportional gain) / 0.1 to 50.0

(reset time) / 1 to 999 s

(transit time) / 15, 30, …, 240 s

UP lag time / 120 to 1200 s Co4 -> Fb09 = ON

(proportional gain) / 0.1 to 50.0

(reset time) / 1 to 999 s

(transit time) / 15, 30, …, 120 s

Co5 -> Fb14 = ON

(proportional gain) / 0.1 to 50.0

(reset time) / 1 to 999 s

(transit time) / 15, 30, …, 240 s

No further pulses are issued at the three-step outputs when the control signal deactivation func tion is activated whenthe totalof thetiming pulses(uninterrupted in one direction) is larger than three times the control valve transit time T

. In this case, it can be assumed that the control valve

is either completely open or completely closed; other signals do not cause any changes in the control valve.

Function

Control signal deactivation OFF Co5 -> Fb18 = ON

WE Configuration

Proportional gain K

(the pulse

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System-wide functions

7.8 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 perature exceeds the set point by T = 0.5 x

Hysteresis

selected, the lower the switching frequency. The

Hysteresis

, the control valve is closed. The greaterthe

Hysteresis

UP lag time

time span which the circulation pump continues to run after the control valve is closed (the pa rameter only needs to be set for the heating circuits HK1, HK2 and HK3). By entering

Minimum activation time,

a burner once switched on remains switched on for the time entered, regardless of how the temperature develops. Likewise, a burner that has been switched off due to the temperatures remains switched off for the time entered in

activation time

The on/off control can be configured separately for the individual heating circuits and for the pre-control circuit.

Functions

Three-step control for heating circuit

Three-step control for pre-control circuit

WE Configuration ON

5 °C 120 s 120 s 240 s

ON 5 °C

120 s 120 s

Co1, 2, 3 -> Fb15 = OFF Hysteresis / 1 to 30 °C

Minimum activation time / 0 to 600 s Minimum deactivation time / 0 to 600 s UP lag time / 120 to 1200 s

Co5 -> Fb14 = OFF Hysteresis / 1 to 30 °C

Minimum activation time / 0 to 600 s Minimum deactivation time / 0 to 600 s

. When the flow tem

parameter indicates the

Minimum de

7.9 Continuous-action control

The flow temperature can be controlled using a PID algorithm. Thevalve receivesan analog 0 to 10 V signal issued by the controller. The proportional-action component causes an immediate

change in the 0 to 10 V signal when asystem deviation arises (the larger the change). The integral-action component first affects the control after a certain time: for the time that passes until the I-action component has changed the output signal so far as the

P-action component just did (the larger the

, the slower the rate in change).The D-actioncom

ponent causes every change in system deviation to have any increased effect on the output sig nal (the larger the

, the more intensified the change).

The continuous-action control can be configured separately for individual heating circuits, for the DHW heating and for the pre-control circuit.

, the greater the

stands

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System-wide functions

Functions

Continuous-action control for heating circuit OFF

Continuous-action control for DHW heating OFF

Continuous-action control for pre-control circuit OFF

WE Configuration

Co1, 2, 3 -> Fb14 = ON

0.5 200 s 0 s

(gain) / 0.1 to 50.0

(reset time) / 1 to 999 s

(derivative-action time) / 0 to 999 s

Co4 -> Fb14 = ON

(gain) / 0.1 to 50.0

(reset time) / 1 to 999 s

(derivative-action time) / 0 to 999 s

Co5 -> Fb19 = ON

(gain) / 0.1 to 50.0

(reset time) / 1 to 999 s

(derivative-action time) / 0 to 999 s

7.10 Forwarding the outdoor temperature

The outdoor temperature can be passed on over the analog output AA (0 to 10 V, terminal 11) (0 to 10 V corresponding with –40 to 50 °C outdoor temperature).

Function

Outdoor temperature passed on over AA OFF Co5 -> Fb15 = ON

WE Configuration

7.11 Flow rate/capacity limitation over a pulse input

Flow rate/capacity limitation can be implemented based on a pulse signal. There are three different operating situations:

A system with simultaneous room heating and DHW heating requires maximum energy.

A system with a fully charged storage tank which performs only room heating requires less

energy. A system which suspends room heating during DHW heating requires less energy.

As a result, three different maximum limit values can be specified:

Max. limit value

Max. limit value for heating

Max. limit value for DHW

In all systems without DHW heating, only the

to determine the absolute upper limit

for exclusive operation of the room heating

for exclusive operation of the DHW heating

Max. limit value

be set.

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System-wide functions

A heat meter with pulse output connected at input V

(terminal 30) can be used either to limit

max

the system flow rate (parameter code: U) or the system capacity (parameter code: P). The pulse weighting of the heat meter (WMZ) and the type of limitation selected must be entered.The dis played value corresponds to the unit l/pulse or kWh/pulse. When the pulse rate reaches the current maximum limit, the flow set point of the control circuit RK1 is reduced. How strongly the controller responds is determined by the

coefficient for limitation

Proportional-action

Example to determine the limit value:

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

1KWh/pulse

30 pulse / h==

Settings for capacity limitation

Functions

Limitation of heat meter (WMZ) OFF Co5 -> Fb08 = OFF Pulse input for flow rate or capacity limitation OFF

Parameters

Maximum capacity of the entire system 50 kW PA5 / 0.1 to 5999 kW Maximum capacity of the DHW heating 50 kW PA5 / 0.1 to 5999 kW Proportional-action coefficient for the limitation 1.0 PA5 / 0.1 to 10

CONST

Select Maximum capacity of the heating 50 kW PA5 / 0.1 to 5999 kW Select Outdoor temperature Point 1

Maximum capacity limitation, points 1 to 4 50 kW PA5 / 0.1 to 5999 kW

additionally for:

4-Pt

additionally for:

Point 2 Point 3 Point 4

WE Configuration

Co5 -> Fb09 = ON, CONST: Limitation constant 4-Pt: Limitation acc. to

WE Parameter level / Range of values

–15 °C – 5 °C

15 °C

Pulse weighting / 0.1 to 10

PA5 /–30 to 90 °C

5 °C

select:

4-point characteristic

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System-wide functions

Settings for flow rate limitation

Functions

Limitation of heat meter (WMZ) OFF Co5 -> Fb08 = OFF Pulse input for flow rate or capacity limitation OFF

Parameters

Maximum flow rate of the entire system 9 m3/h PA5 / 0.01 to 99.9 m3/h Maximum flow rate of the DHW heating 9 m3/h PA5 / 0.01 to 99.9 m3/h Proportional-action coefficient for the limitation 1.0 PA5 / 0.1 to 10

CONST

Select Maximum flow rate of the heating 9 m3/h PA5 / 0.01 to 99.9 m3/h Select Outdoor temperature Point 1

Maximum flow rate limitation, points 1 to 4 9 m3/h PA5 / 0.01 to 99.9 m3/h

additionally for:

4-Pt

additionally for:

Point 2 Point 3 Point 4

WE Configuration

Co5 -> Fb09 = ON, CONST: Limitation constant 4-Pt: Limitation acc. to

WE Parameter level / Range of values

–15 °C – 5 °C

15 °C

Pulse weighting / 0.1 to 10

PA5 /–30 to 90 °C

5 °C

4-point characteristic

select:

A second pulse counter can be connected at terminal 29. The pulses entered are stored in the holding registers 40031 (low byte) and 40032 (high byte). The associated duration on the holding registers 40035 (low byte) and 40036 (high byte). First, the low byte counts upwards (0 to 65535). If several pulses arrive, the counting value is formed by multiplying the low byte with the high byte (32-bit value).

7.12 Locking manual level

To protectthe heating system, this function can beused to lock manual level. Whenthis function has been activated, automatic mode is started when the rotary switch is set to +, – or 0.

Function

Locking manual levels OFF Co5 -> Fb10 = ON

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WE Configuration

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8 Operational faults

Operational faults

Malfunctions or faults are indicated by the icon blinking on the display. appears on the display. Press the enter key to open the error level. It may be possible to view several error alarms by pressing the enter key. As long as an error alarm is present, the error level appears in the display loop, eventhough ithas not been opened by pressing theenter key.

In the error level, the controller indicates a defective sensor by displaying the corresponding sensor combination. A fault is displayed as specified in the list below.

Error

immediately

8.1 Error list/sensor failure

ERR 1 Sensor broken in RK1 (in connection with the corresponding sensor icon)

ERR 2 Sensor broken in RK2 (in connection with the corresponding sensor icon)

ERR 3 Sensor broken in RK3 (in connection with the corresponding sensor icon)

ERR 4 Sensor broken in DHW circuit (in connection with the sensor icon)

ERR 5 Sensor broken in primary circuit (in connection with the sensor icon)

ERR -1 Standard data entered again (default settings)

ERR -2 Final temperature of the thermal disinfection not reached

ERR -3 Mode selector switch 1 defective

ERR -4 Mode selector switch 2 defective

ERR -5 Mode selector switch 3 defective

ERR 10 Temperature limitation of DHW heat exchanger active

In the error level, Detailed information over a sensor failure can be retrieved within the information level by polling individual temperatures: each sensor icon displayed together with––––indicates a defec tive sensor. The following list explains how the controller responds to the failure of the different sensors.

Outdoor sensors AF: When the outdoor sensor fails, the controller uses a flow temperature

set point of 50 °C or the than 50 °C). Flow sensor VF: When the flow sensor is defective, the controller continues to work with the

valve in the last position. Flow sensor in the DHW heat exchanger VFT: The DHW control valve is closed when the

sensor fails. Flow sensor in the DHW storage tank VFS: The flow set point for the DHW heat exchanger

is only controlled with VFT. The display blinks. Return sensor RüF:When thereturn flowsensor is defective, the controller continues to work

without the return flow temperature limitation function.

ERR1toERR5

Max. flow temperature

on the display indicates the sensor failures as per the error list.

(when the

Max. flow temperature

is smaller

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Room sensor RF: Upon failure of the room sensor, the controller functions according to the

settings for operation without a room sensor. For example, optimized operation is switched over to reduced operation. Adaptation operation is interrupted. The last determined heating characteristic is not changed anymore. Storage tank sensors SF1 and SF2: Upon failure of one of these sensors, the storage tank is

not charged anymore.

Sensor breakage status

In InF7 and InF8 levels, it is possible to see which sensor doesnot functionproperly. Thestatus of

bruch

the sensors is shown over function blocks together with the string signed to each sensor and is set when the sensor data input is incorrect after one minute.

InF7 (only with Co7 -> Fb05 = ON): Error status display of the recognized LON controller

and its sensor breakage status, for example 7403b = TROVIS 5174 Controller, sensor breakage bit 03 7919b = TROVIS 5179 Controller, sensor breakage bit 19 The relationship between the set bit and the associated sensor can be found in the Mounting and Operating Instructions (EB) of the recognized LON controller. InF8: Sensor breakage status display of the sensor belonging to the controller. The set bits

remain visiblein the case of failure for atleast one minute ( appears on the right-hand side of the set bit number, see page 69).

When an SMS text message alarm or fax alarm is issued (see sections 8.6 and 8.7) pears on the display next to the status of the connected sensors. One “o” appears for every working sensor and one “F” for every defective sensor. The sequence is the same as the set bits on page 69.

Example: “Fuehl:oFoFFooooooooooooooooo” = Defective resistor inputs 1, 3 and 4 (return

flow sensor RüF1, room sensor RF1 and flow sensor VF1)

. A function block is as

Fuehl

ap-

8.2 Collective error alarm

Should an error occur in the controller, it can be indicated over binary output BA4. BA4 is activated when the error status register does not equal 0. BA4 is a DC voltage output in an open collector circuit and may only be loaded with 24 V/10 mA at the maximum. If the Col

lective error alarm function is active, BA4 is no longer available for pump management.

Function

Potentiometer in pre-control circuit OFF Co5 -> Fb16 = ON

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Sensor breakage status:

Number = Bit no. in HR 012345678910111213141516171819202122

Flow sensor VF1 Return flow sensor RüF1 Outdoor sensor AF1 Room sensor RF1 Flow sensor VF2 Return flow sensor RüF2 Outdoor sensor AF2 Room sensor RF2 Flow sensor VF3 Return flow sensor RüF3 Outdoor sensor AF3 Room sensor RF3 Pot. input FG1

(not monitored) Pot. input FG2

(not monitored) Pot. input FG3

(not monitored) Flow sensor VFprim Return flow sensor RüFprim Flow sensor VFT Return flow sensor RüFTW Storage sensor SF1 Storage sensor SF2 Flow sensor VFS Flow rate

(not monitored)

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8.3 Temperature monitoring

The flow temperature and the room temperature can be monitored for any deviations. Thisfunc tion is activated in Co5 -> Fb20. The controller issues an alarm when:

the flow temperature deviates from its set point by more than 10 °C for more than 30

minutes the room temperature falls below its set point by 2 °C for more than 30 minutes

the return flow temperature limitation is active for more than 30 minutes.

When one of these conditions occurs, the bit for the associated sensor is set in holding regis ter 857. A set bit in holding register HR 857 causes the bit 4 to be set in the error status register FSR2 (HR 61) and in the error archive register 2 (HR 63) and the error counter (HR 64) is incre mented.

Function

Temperature monitoring OFF Co5 -> Fb20 = ON

WE Configuration

Holding register 857 ( appears on the right-hand side of the set bit number)

Number = Bit number in HR 0 123456789101112

VFprim: Measured value (set point + 10 °C) RüFprim: Limitation active

VF1: Meas. value > RüF1: Limitation active RF1: Meas. value < VF2: Meas. value > RüF2: Limitation active RF2: Meas. value < VF3: Meas. value > RüF3: Limitation active RF3: Meas. value < VFTW: Meas. value > RüFTW: Limitation active

(actual return flow blinks in InF5)

(set point +10 °C)

(set point – 2 °C) (set point + 10 °C)

(actual return flow blinks in InF4)

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8.4 Monitoring the input terminals for limit violations

Operational faults

The controller provides the option to apply limits (in % of measuring range) to two selected in puts (temperature sensor or analog inputs) and to issue an alert to a higher-level control system by writing in the error status register. Directly after setting the function block, select the terminal that is to be monitored and the condition that triggers the alarm according to the following codes:

Alarm when upper limit is exceeded (OGW)

Lower limit: 0 % Upper limit: Any

Alarm when bottom limit is not reached (UGW)

Lower limit: Any Upper limit: 100 %

Alarm when the limits is exceeded or not reached

Lower limit: > 0 % < OGW Upper limit: > UGW < 100 %

Alarm ON, when UGW is exceeded and alarm OFF when OGW is not reached

Lower limit: > OGW < 100 % Upper limit: > 0 % < UGW

Input to which temperature sensors are connected have readings in °C (measuring range from –30 to 160 °C); analog input readings are shown in % of the measuring range. In systems Anl1, 3,4, 6,7 and 10, the limit alarm is made with “BA EIN“ over an analog relay. A make contact or break contact function can be assigned to the relay by selecting “STEIG“ (= rising signal edge) and “FALL“ (= negative signal edge) respectively. The limit alarm also appears in the error status register by selecting “Fsr-E”.

Note!

The associated binary output is marked in the wiring plan with GWx and GWyand dependson the system code number (Anl).

Function

Limit monitoring at terminal x, y

WE Configuration

Co5 -> Fb11, 12 = ON Terminal number

Upper/lower limit Signal edge, binary output

FSr-A/FSr-E: Status alarm to error status register ON/OFF BA EIN/BA AUS: Setting/not setting the binary input FALL/steig: Negative signal edge/increasing signal edge

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8.5 Error status register

The HR 60 and HR 61 error status registers (holding register - 16-bit) are used to indicate con troller or system errors. HR 60 contains general alarms, whereas special faults are entered in HR 61. In modem mode (Co9 ->Fb01 = ON), the changein state of HR 60 or HR 61 causes the controller to dial the control system.

In InF8 level the bits of the error status register are displayed:

FSR1 (general error):

The corresponding block at the top is set for every bit set FSR2 (special error):

by pressing key, the set bits are displayed similar to FSr1

In both cases, the blocks 20 to 23 are visible when a bit is set in another error status register (which is currently not visible) to make it immediately recognizable whether one of the maxi mum 32 error flags has been set.

Holding register 60 (A set bit is indicated by on the right of number):

Number = Bit no. in HR 0 1234567891011

Bit value 202122232425262728292102 Sensor breakage D0 Default values read D1 –D2 Mode switch RK1 faulty D3 Mode switch RK2 faulty D4 Mode switch RK3 faulty D5 Unauthorized access D6 Error alarm of a BE D7 WMZ error alarm issued to

meter bus WMZ error alarm issued D9 – D10 Fault alarm binary output

changed

D11

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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> = ([D0] x <1> + [D1] x <2> ) +...+ ([D11] x <2048>)

Holding register 61 (A set bit is indicated by on the right of number):

Number = Bit no. in HR 0 123456789101112131415

Bit value 2 Thermal disinfection D0 Limit at terminal x active D1 Limit at terminal y active D2 VFmax at DHW exchanger D3 Temperature monitoring D4 –D5 –D6 –D7

Extended limit monitoring (D8 to D15)

0212223242526272829210211212213214215

D8 D9 D10 D11 D12 D13 D14 D15

8.6 Error alarms

Error alarms can be sent over amodem either directly to thecontrol station or over the SMStext message functionto a mobile phone or to a fax. Just onefunction (Modbus, SMS function or fax function) can be selected at one time since the functions use the same interface. The error alarms to a mobile phone and to a fax contain the number of the affected error status register (FSR1), the fault as per error status register (BitNo), the controller ID and the bit number (Bit xx).

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8.6.1 Sending text message in case of a fault alarm

Currently, text messages can only be sent to the German D1 network. The corresponding access numbers into the D1 network as well as the mobile phone number of the recipient must be set in the PA9 level:

D1 access number: 0171 252 10 02

(add 0 in front when dialing from a private branch exchange) Digits 0 to 9, P = pause, - = end, max. 22 characters The access number is assigned by Deutsche Telekom and may alter. Mobile phone number: 49 xxx yyyyyyy , where xxx stands for 160, 171 or any other valid

D1 dialing code and yyyyyy represents the specific phone number of the mobile phone you wish the alarm to be sent to. Digits 0 to 9, P = pause, - = end, max. 14 characters

Note! Currently, text messages can only be sent to the German D1 network.

Functions

Modbus ON Co9 -> Fb00 = OFF Modem OFF Co9 -> Fb01 = OFF Text message via SMS OFF Co9 -> Fb06 = ON SMS dialing procedure OFF Co9 -> Fb07 Alarm sent per fax OFF Co9 -> Fb10 = OFF

Parameters

Access number (UGno) – PA9 / configurable as required* Mobile phone number (HAndY) – PA9 / configurable as required** * Digits 0 to 9, P = pause, - = end, max. 14 characters ** Digits 0 to 9, P = pause, - = end, max. 22 characters

WE Configuration

WE Parameter level / Range of values

8.6.2 Sending fax in case of a fault alarm

The device type is forwarded in addition to a detailed error description. The recipient’s fax number must be programmed in the PA9 level. Optionally, also the sender’s station ID can be programmed; this number will then be forwarded as well. If no station ID is specified, the string “nicht verfügbar“ (not available) is inserted.

Fax number: Digits 0 to 9, o = Pause, - = end, max. 14 characters

(place an additional 0 in front when dialing from a private branch exchange)

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Station ID: Digits 0 to 9, P = pause, - = end, max. 14 characters

Functions

Modbus ON Co9 -> Fb00 = OFF Modem OFF Co9 -> Fb01 = OFF Alarm sent as text message OFF Co9 -> Fb06 = OFF Alarm sent per fax OFF Co9 -> Fb10 = ON Fax dialing procedure OFF Co9 -> Fb11

Parameters

Fax number (tELno) – PA9 / configurable as required* Station ID (St Id) – PA9 / configurable as required* * Digits 0 to 9, P = pause, - = end, max. 14 characters

WE Configuration

WE Parameter level / Range of values

Operational faults

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9 Communication

Using the serial system bus interface, the TROVIS 5179 District Heating Controller can commu nicate with a building control system. In combination with a suitable software for process visual ization 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 leased line modem at the RS-232-C system bus interface Communication is established via a permanent connection between two leased line modems. This setup is applied for long-distance transmissions or when different signal level converters are used. The connection between controller and modem can also be established via the modem connecting cable (1400-7139).

– Operation at a four-wire bus To establish the link between controller and bus line, thesignal level needs to be converted by a converter (SAMSON’s cable converter 1400-7308).

GLT

RS 232C RS 232C

RS232

RS485

RS 485

RS232

RS485

TROVIS 5179

Fig. 7 · Network structure

TROVIS 5179

RS232

RS485

The TROVIS 5179 District Heating Controller is fitted with a Modbus interface RS-232. Op tionally, a cable converter for four-wire bus (1400-7308) is available.

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GND TD DTR RTSRDDCD

Fig. 8 · Pin assignment of RJ-12 system bus interface

9.1 RS-232-C system bus interface

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-upmodem is required if the controller is to be connected to the telecommunications network. In this case, the controller works autonomously and can issue an alarm call to the building control station when errors occur. Additionally, the building control station can dial up the controller, read data from it, and send new data once the valid key number has been written to the holding register no. 40070. On recognizing the key code from the controller as valid, the register value “1” confirms writing permission. In any other case, the register value remains at “0”. Any further establishment of communications requires the writing permission to beacquired byresending the key number.

Note!

If a wrong key number has been written to holding register no. 40070 for the third consecutive time, the controller immediately interrupts themodem connectionand setsthe D6bit ofthe error status register (Unauthorized access). As a result, the call to the configured control system is triggered or a text message/fax is sent. Bit D6 is deleted as soon as the error status register has been read by the control system and the connection has been terminated.

In specialcases, theLock dial-up function can be selected to stop dial-up in case of faults. Using the Dial-up also upon corrected fault function, the controller additionally informs the building control station when a previously registered fault no longer persists.

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Functions

Modem OFF Co9 -> Fb01 = ON Modem dialing procedure OFF Co9 -> Fb02 Lock dial-up OFF Co9 -> Fb03 Dial-up also upon corrected fault OFF Co8 -> Fb00

Parameters* Station address (ST.-NR) 255 PA9 / 1 to 247

Baud rate (BAUD) 9600 PA9 / 300 to 19200 Cyclic initialization (I) 30 min PA9 / 0 to 255 min Modem dial interval between calls (P) 5 min PA9 / 1 to 255 min Modem timeout (t) 5 min PA9 / 1 to 255 min Number of redial attempts (C) 5 PA9 / 0 to 99 Phone number of building control station

(tELno) Phone number of alternative recipient

(rESno) ** Digits 0 to 9, P = Pause, - = End, max. 22 characters

* –> Section 9.3 (“Description of communication parameters to be adjusted“)

WE Configuration

WE Parameter level / Range of values

(1 to 999 with Co9 -> Fb04 = ON)

– PA9 / Configurable as required**

9.2 RS-232/RS-485 system bus interface (for four-wire bus) in combination with cable converters

A constant bus connection is required (data cable) for operation of the district heating controller in conjunction with cable converters. The bus line is routed to the individual control instruments in an open ring. At the end of the bus line, the data cable is connected to the control station us ing an RS-485/RS-232 converter (e.g. TROVIS 5484). The maximum range of the bus connec tion (cable length) is 1,200 meters. A maximum of 32 devices can be connected to such a seg ment. 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.

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Functions

Modbus ON Co9 -> Fb00 = ON Modem OFF Co9 -> Fb01 = OFF Modbus 16-bit addressing OFF Co9 -> Fb04

Parameters* Station address (ST.-NR) 255 PA9 / 1 to 247 (1 to 999 with Co9 -> Fb04 = ON) Baud rate (BAUD) 9600 PA9 / 300 to 19200

* –> Section 9.3 (“Description of communication parameters to be adjusted“)

WE Configuration

WE Parameter level / Range of values

9.3 Description of communication parameters to be adjusted

Station address (ST.-NR)

This address is used to identify the district heatingcontroller inbus ormodem mode. In a system, each controller needs to be assigned a unique address.

Baud rate (BAUD)

In a bus system, the baud rate refers to the transfer speed between control system and district heating controller.In modemmode, baudrate refers to the transfer speed between district heating controller and modem. The baud rate adjusted at the district heating controller must correspond with the baud rate of the control system, otherwise communication cannot be established.

Cyclic initialization (I)

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 con figuration profile 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.

Typical initialization of a modem with a terminal program:

AT & F (restores modem to its factory settings) OK (response of the modem) ATEOSO = 1 (command input, EO: echo off;

SO = 1: answer on first ring)

Modem dialing pause (P)

It is recommended to observe an interval of approx. 3 to 5 minutes between dialing up to the control system/or sending a text message or fax to avoid a permanent overloading of the (tele communications) network. The modem dialing pause is the interval between two dialing at tempts.

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Modem timeout (t)

When the controller connects to the GLT but without addressing a Modbus data point, the con nection isclosed after the time specified for ister has not been read during the GLT connection, the controller dials up tothe GLT again after the

Modem dialing pause (P)

Number of redialing attempts (C)

The controller tries to dial up to the control system again, observing the in case the control station/text messaging center/fax 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 district heating controller dials up the alternative recipient. Resetting of triggered call = Reading the error status register (HR 40060)

Phone number of control station (tELno)

Enter the phone number of the control system modem 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 22 characters. Example: “069, 2 sec. pause, 4009, 1 sec. pause, 0“: 0 6 9 P P 4 0 0 9 P 0 – (= 11 characters)

Phone number of the alternative recipient (rESno)

Enter the phone number of the 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 22 characters. Example: “069, 1 sec. pause, 654321“: 0 6 9 P 6 5 4 3 2 1 – (= 10 characters)

Common modem settings are:

EO - Echo off

QO - Enable result codes

X3 - Dial without checking for dial tone

% CO - Data compression off

\ N1 - Buffer off, fault correction off

V1 - Result codes in text format

% B 9600 - Baud rate 9600

\ VO - Standard connect result codes

has elapsed.

Modem time-out

has elapsed.If the error status reg

Modem dialing pause

Resetting to default settings

A modem can be reset to its default settings directly at the controller using the key number. Key number Command 44 AT&F&W <CR> <LF>

45 AT&F&W ATX3 <CR> <LF> (for branch exchange systems)

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Note!

The initialization settings described here are indispensable for operation on a dial-up modem. Nevertheless, it cannot be guaranteed that data are transferred after the initialization settings have been adjusted. Due to the broad range of modems available on the marketand the differ ent commands, refer to the operating manual of the modem for further details.

9.4 Meter bus interface

The district heating controller can communicate with up to 3 heatand watermeters accordingto EN 1434-3. Details on the useof thedifferent heator watermeters canbe found in the technical documenta tion TV-SK 6311.

9.4.1 Activating the meter bus

To successfully transfer data from the heat meter (WMZ) to the district heating controller, the heat meter must use a standardized protocol in accordance with EN 1434-3. It is not possible to make a general statement aboutwhich 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 parameters to set up the communication with heat or water meters are available in Co9 -> Fb21 to Fb23. The meter bus address, model code and reading mode need to be set in sequence. 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 assigned the meter bus address 254. The address 255 deactivates the communication with the respective WMZ. The model code to be set for the heat meter can be found in TV-SK 6311. In general, the default setting of 1434 can be used for most devices.

The meters can be read either automatically approx. every 24 hours (24h), continuously (con) or when thecoils (=Modbus datapoints) assignedto theheat metersWMZ1 to WMZ3 are overwrit ten with the value 1 (CoiL) via the system bus interface.

In InF9info level, “1434“ is displayed when the meter bus isactivated. Press the enter key to get to the display referring to the meter bus. For each of the three heat meters whose address is not 255, “buSi“ (with i = 1, 2, 3) is indicated. Press the enter key again to display the following information about the associated meter:

Flow rate (d, cm/h)

Total capacity (U, cm3)

Capacity (P, kW)

Energy (A, MWh, GJ)

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Flow temperature (b, °C)

Return flow temperature (b, °C)

Meter identification number (L without enter key, H with enter key)

Meter bus address (sent by WMZ) (A, –)

Blinking values in combination with black squares in the top row of the display (fault status of the associated meter –> TV-SK 6311) indicate different faults.

Note!

With reading mode “24h“, the displayed values are not updated by opening the “buS1” to “buS3” levels again; the values read during the last cycle remain unchanged. With reading mode “con“, the values in the levels are not continuously updated. Reopen the specific level to get current values.

Functions

Meter bus 1, 2, 3 OFF

Limitation of WMZ OFF Co5 -> Fb08 = ON

WE Configuration

Co9 -> Fb21 = ON, Fb22 = ON, Fb23 = ON

255 1434 con

Meter bus address for WMZ 1, 2, 3 / 0 to 255 Model code WMZ 1, 2, 3 / P15, PS2, 1434, CAL3, APAtO, SLS Reading mode WMZ 1, 2, 3 / 24h, con, CoiL

---: No limitation U: Flow rate limitation P: Capacity limitation U-P: Flow rate and capacity limitation by selecting “U“, “P“ or “U-P“ in addition: CONST: Limitation parameter constant 4-Pt: Limitation acc. to 4-point characteristic,

outdoor temperature dependent

9.4.2 Flow rate/capacity limitation using meter bus

Flow rate and/or capacity limitation with the aid of the connected meter bus can be imple mented by selecting the type of limitation 2, 3 or 4. The update rate of the measured variable, flow rateand/or capacity,must be smaller than 5 seconds in meter bus operation to carryout a proper limitation. Refer to the technical documentation TV-SK 6311 for details on which listed heat meters fulfill this criterion and can be used for limitation purposes. In case of battery-oper ated 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 batteries too quickly. The tech nical documentation TV-SK 6311 provides more details on these matters.

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A system with simultaneous room heating and DHW heating requires maximum energy.

A system with a fully charged storage tank which performs only room heating requires less

energy. A system which suspends room heating during DHW heating requires less energy.

As a result, three different maximum limit values can be specified:

Max. limit value

Max. limit value for heating

Max. limit value for DHW

to determine the absolute upper limit

for exclusive operation of the room heating

for exclusive operation of the DHW heating

In all systems without DHW heating or without heating circuit, only the flow rate or capacity can be set.

Capacity limitation

Parameters

Maximum capacity of the entire system 50 kW PA5 / 0.1 to 5999 kW Maximum capacity of the DHW heating 50 kW PA5 / 0.1 to 5999 kW Proportional-action coefficient for limitation 1.0 PA5 / 0.1 to 10 By selecting “CONST“ additionally Maximum capacity of the heating 50 kW PA5 / 0.1 to 5999 kW By selecting “4-Pt“ additionally Outdoor temperature Point 1

Point 2 Point 3 Point 4

Maximum limit of capacity, points 1 to 4 50 kW PA5 / 0.1 to 5999 kW

Flow rate capacity

Parameters

Maximum flow rate of the entire system 9 m3/h PA5 / 0.01 to 99.9 m3/h Maximum flow rate of the DHW heating 9 m3/h PA5 / 0.01 to 99.9 m3/h Proportional-action coefficient for limitation 1.0 PA5 / 0.1 to 10 By selecting “CONST“ additionally Maximum flow rate of the heating 9 m3/h PA5 / 0.01 to 99.9 m3/h By selecting “4-Pt“ additionally

WE Parameter level / Range of values

–15 °C – 5 °C

15 °C

WE Parameter level / Range of values

PA5 /–30 to 90 °C

5 °C

Max. limit value

for the

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Outdoor temperature Point 1

Point 2 Point 3 Point 4

Maximum limit of flow rate, points 1 to 4 9 m3/h PA5 / 0.01 to 99.9 m3/h

–15 °C – 5 °C

15 °C

PA5 /–30 to 90 °C

5 °C

9.5 LON communication

Note!

The following section only applies to devices with LON interface and CO7 -> Fb00 = ON. On connecting LONMARK devices, CO7 -> Fb00 = OFF needs to be configured.

Each controller is assigned a LON station address, which needs to be set in the PA7 parameter level. A station address in a subnet must be unique. Each controller type is assigned its own subnet. This means that identical LON station addresses can be assigned for different controller types, e.g. 5174 and 5179, as they belong to different subnets. A maximum of 59 participants consisting of TROVIS 5171, 5174, 5177 and 5179 can be connected together.

Controller type Subnet Station address

TROVIS 5171 1 1 to 20 TROVIS 5174 4 1 to 20 TROVIS 5177 7 1 to 20 TROVIS 5179 9 1 to 20

The controller sends its inputs and outputs as well as pulse counters and their pulse duration over the LON network to a TROVIS 5171 Programmable Logic Controller.

The pulse inputs are sent after four minutes; the sensor temperatures when the temperature has changed by at least 1 °C or after four minutes at the latest. The analog inputs and outputs are sent when the signal level changes by 0.5 V. The binary inputs and outputs are sent after every change or after four minutes at the latest.

In the InF7 level, all other TROVIS 5100 network participants are listed together with controller type and LON address (e.g. “74-01“). A communication fault exists when the display blinks.

Function

LON active OFF Co7 -> Fb00 = ON

WE Configuration

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9.6 Requesting/processing an external demand

Requesting an external demand

The flow temperature set points can bepassed onover the LON network in complex heating sys tems. The external flow setpoint iscompared withthe controller’sown flowset point.The higher of the two flow set points is passed on.

Functions

External demand OFF Co5 -> Fb13 = ON LON active OFF Co7 -> Fb00 = ON Master controller OFF Co7 -> Fb01 = OFF

Note!

In systemsAnl 6 and 9, the settingCo5 -> Fb00 = OFF must be configured for passing on theflow temperature set point. In all other systems, the setting Co5 -> Fb00 = ON must be configured.

Processing an external demand

The master controller receives the demand of connected controllers over the LON network and makes the required energy available for all the control circuits. The secondary flow sensor installed directly downstream of the heat exchanger serves as the sensor for the primary valve.

Boost

The

parameter improves the control performance of the connected heating circuit valves

and compensates for any loss in capacity. If an internal heating circuit has the highest set point, the primary valve regulates the tempera

ture at the flow collector to the set point of the heating circuit plus The set point in the heating circuit is regulated by the mixing valve of the heating circuit. In InF5

level, the set point of the primary valve appears on the display in this case.

WE Configuration

Boost

Note! In systems Anl 6 and 9, the external demand is only sent and not processed.

Functions

Flow sensor secondary VFsek ON Co5 -> Fb00 = ON External demand OFF

LON active OFF Co7 -> Fb00 = ON Controller as master controller OFF Co7 -> Fb01 = ON

WE Configuration

Co5 -> Fb13 = ON

0 °C

Boost / 0 to 30 °C

EB 5179 EN 85

Page 86

Communication

Note!

In controllerswith a firmware version lower than 1.05,the master controller receives the Subnet 1 address and node address 1 and is the decisive controller in LON network terms. It is the only controller that can send alarms over a modem.

9.7 Sending outdoor temperatures and controller time

Two outdoor temperatures and the controller timecan besent over the LON bus which are taken on by all the other controllers. Any controller in the system can send these data. Either all the data can be sent by one controller or each piece of data can come from a separate controller. The controller time and the outdoor temperature are transmitted every four minutes. The out door temperature is additionally transmitted if it changes by 0.5 °C. All controllers delete the values received over the bus ten minutes after the last update.

Sending the controller time

The controllertime can be made available to allLON participants. They download the transmitted time and adopt it. The controller time can be sent with the setting Co7 -> Fb02 = ON. This functions shouldonly be set in one LON participant,otherwise various controller times might be sent. In the case that the controller time of the LON participant fails, the controller time continues to run locally in all other participants.

Function

Controller time OFF Co7 -> Fb02 = ON

WE Configuration

Sending outdoor temperatures

Two outdoor temperatures can be sent. By specifying the terminal number after activating the corresponding function block, the sensor is defined whose measuredtemperature is passed on. The transmitted temperatures are available to all LON participants.

Functions

Outdoor temperature 1 OFF Co7 -> Fb03 = ON

Outdoor temperature 2 OFF Co7 -> Fb04 = ON

WE Configuration

Terminal number of outdoor sensor

Note!

The outdoor temperature used by each LON participant is set on selecting the outdoor sensor (select: FUEHL, 0–10, Lon-1, Lon-2).

86 EB 5179 EN

Page 87

Communication

EB 5179 EN 87

Page 88

Installation

10 Installation

The controller consists of the housing with the electronics and the back panel with the terminals. It is suitable for panel, wall, and top hat rail mounting (Fig. 9).

Panel mounting

1. Remove both screws (1).

2. Pull apart the controller housing and back panel.

3. Make a cut-out of 138 x 91 mm (width x height) in the control panel.

4. Insert the controller housing through the panel cut-out.

5. Insert one mounting clamp (2) each at the top and bottom or at the sides. Screw the

threaded rod towards the panel with a screwdriver such that the housing is clamped against the control panel.

6. Install the electrical connections at the back of the housing as described in section 11.

7. Fit the controller housing.

8. Fasten both screws (1).

Wall mounting

1. Remove both screws (1).

2. Pull apart the controller housing and back panel.

3. If necessary, bore holes with the specified dimensions in the appropriate places. Fasten

the back panel with four screws.

4. Install the electrical connections at the back of the housing as described in section 11.

5. Fit the controller housing.

6. Fasten both screws (1).

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.

88 EB 5179 EN

Page 89

Installation

Wall mounting

Panel mounting

Top hat rail mounting

Controller housing

Back of the controller

Fig. 9 · Installation

EB 5179 EN 89

Page 90

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 thelocal powersuppliers. Makesure all electri cal work is performed by trained and experienced personnel!

Notes on installing the electrical connections

Install the 230 Vpower supplylines andthe signallines 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. The lines for digitalsignals (buslines) andanalog signals(sensor lines,analog outputs) must

also be installed separately! 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. Inductances in the control cabinet, e.g. contactor coils, are to be equipped with suitable in-

terference suppressors (RC elements). Control cabinet elements with highfield strength, e.g. transformers or frequency converters,

should be shielded with separators providing a good ground connection.

Overvoltage protection

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! The shield of signal lines installed outside buildings must have current conducting capacity

and must be grounded on both sides. 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 individualinputs for other functions, e.g. forbinary inputs, are to be used,they must be deter mined in the configuration levels (Co1 to Co6). Open the housing to connect the cables. To connect the feeding cables, make holes in the marked locationsat the top, bottom or back of therear part of the housing and fit suitable cable glands.

90 EB 5179 EN

Page 91

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 damplocations to the terminals of the control ler output. The direction of travel needs to be checked at start-up.

Set mode switch to (+). Valves must open.

Set slide switch to (–). Valves must close.

Connecting the pumps

Connect allcables withat least 1.5 mm² to the terminals of the controller asillustrated inthe corre sponding connection diagram (–> page 92 to 96).

Wiring plan legend (page 92 to 96):

AA Analog output 0 to 10 V VFS Flow sensor in storage tank AE Analog input 0 to 10 V VFT Flow sensor in heat exchanger BA Binary output GND Ground BA1 UP HK1 ON/OFF GWx Limit alarm to terminal x BA2 UP HK1 Speed reduced GWyLimit alarm to terminal y BA3 UP HK2 ON/OFF ZB Meter bus BA4 UP HK2 Speed reduced HK Heating circuit BE/V Binary input for flow rate FW District heating circuit AF Outdoor sensor TW DHW circuit FG Potentiometer (terminal 3 at Type 5244) SLP Storage tank charging pump RF Room sensor (terminal 1 at Type 5244) TLP Heat exchanger charging pump RüF Return flow sensor UP Circulation pump SF Storage tank sensor

(1: Storage tank ON; 2: Storage tank OFF) STh Storage tank thermostat VF Flow sensor

ZP Circulation pump

Option Type 5244 or 5257-5 (Terminal base of room panel is illustrated)

EB 5179 EN 91

Page 92

System Anl 1

System Anl 2

Option:

Type 5244, Type 5257-5

92 EB 5179 EN

Option:

Type 5244, Type 5257-5

Option:

Type 5244, Type 5257-5

Page 93

System Anl 3

System Anl 4

Option:

Type 5244, Type 5257-5

Option:

Type 5244, Type 5257-5

EB 5179 EN 93

Page 94

System Anl 5

System Anl 6

Option:

Type 5244, Type 5257-5

94 EB 5179 EN

Option:

Type 5244, Type 5257-5

Page 95

System Anl 7

System Anl 8

Option:

Type 5244, Type 5257-5

Option:

Type 5244, Type 5257-5

EB 5179 EN 95

Page 96

Electrical connection

System Anl 9

System Anl 10

Option:

Type 5244, Type 5257-5

Voltage supply 24 V/30 mA

96 EB 5179 EN

Relay: Phoenix Contact, Type PLC-BSC-24 DC/21, Article no. 29 66 016

Page 97

12 Appendix

12.1 Function block lists

Co1 to Co3: Heating circuit 1 to 3

Appendix

Fb Function WE Anl

00 Room sensor

RF1, 2, 3

01 Return flow sensor

RüF1, 2, 3

02 Outdoor sensor

AF1, 2, 3 * HK1 = ON

HK2 = OFF HK3 = OFF

03 Reserved 04 Reserved 05 Optimization OFF All Co1, 2, 3 -> Fb05 = ON:

06 Room temperature-

dependent control

07 Adaptation OFF Not

08 Flash adaptation OFF Not 3,

OFF All Co1, 2, 3 -> Fb00 = ON: Room sensor active

OFF All Co1, 2, 3 -> Fb01 = ON: Return flow sensor active

* All Co1, 2, 3 -> Fb02 = ON: Outdoor sensor active;

OFF 6, 9 Co1, 2, 3 -> Fb06 = ON: Room temperature-dependent con

Comments Function block parameters / Range of values (default settings)

In systems Anl 3, 5 and 8 only for optimization and display

Function block parameters:

Limitation factor / 0 to 25.5 (1.0) In system Anl 6 only after entering key number.

Option: Sensor

Lon1 Lon2

In HK1 it can only be deactivated when all heating circuits are configured as room temperature-dependent control. The outdoor temperature is then set to the fictive value of 3 °C.

Option: 1 Activation according to outdoor temperature;

* Function block parameters: Advance heating time / 0 to 360 min (120 min)

Option 2 and 3 only with Co1, 2, 3 -> Fb00 = ON

trol active Co1, 2, 3 -> Fb07 = ON: Adaptation active; only with

3, 5, 8

Co1, 2, 3 -> Fb00 = ON and Co1, 2, 3 -> Fb10 = OFF Co1, 2, 3 -> Fb08 = ON: Flash adaptation active;

5, 8

only with Co1, 2, 3 -> Fb00 = ON

set-back acc. to time schedule*

2 Activation according to outdoor temperature;

set-back acc. to room sensor*

3 Activation and deactivation acc. to room sensor

EB 5179 EN 97

Page 98

Appendix

Fb Function WE Anl

09 RK switched off

OFF All Co1, 2, 3 -> Fb09 = ON: UP still runs until 1 x T

when switch at

Function block parameters / Range of values (default settings)

The flow sensor is no longer be read.

MAN-CLOSED

Comments

10 4-point character

istic

OFF Not

Co1, 2, 3 -> Fb10 = ON: 4-point characteristic

3, 5,

Co1, 2, 3 -> Fb10 = OFF: Gradient characteristic

8, 10

11 Summer mode ON All Co1, 2, 3 -> Fb11 = ON: Function block parameters:

Start summer mode / 01.01 to 31.12 (01.05) End summer mode/ 01.01 to 31.12 (30.09) Outdoor temp. limit for summer mode / 0 to 30 °C (18 °C)

12 Potentiometer input

Release HK

OFF All Co1, 2, 3 -> Fb12 = ON: Valve position feedback

(0 to 1000Ω), 1000Ωadditional resistor required Co1, 2, 3 -> Fb12 = OFF: RK released with binary signal;

Option FrG-E: Released over bin. signal (potentiometer)

FrG-A: Released over time schedule

With FrG-A:RLG: Configuration acc. to input

FREE: Input freely available

13 Pump

management

14 Continuous-action

control for heating circuit

15 Three-step control

for heating circuit

OFF All Co1, 2 -> Fb13 = ON: BA 2, 4 OFF outside time-of-use

Co1, 2 -> Fb13 = OFF: BA 2, 4 ON outside time-of-use

OFF All Co1, 2, 3 -> Fb14 = ON: Continuous-action control 0 to 10 V

Function block parameters:

(proportional gain) / 0.1 to 50.0 (0.5)

(reset time) / 1 to 999 s (200 s)

(derivative-action time) / 0 to 999 s (0 s)

ON All Co1, 2, 3 -> Fb15 = ON: Three-step control;

Function block parameters:

(proportional gain) / 0.1 to 50.0 (0.5)

(reset time) / 1 to 999 s (200 s)

(valve transit time) / 15 to 240 s (120 s)

UP lag time / 120 to 1200 s (240 s) Co1, 2, 3 -> Fb15 = OFF: On/off control

Function block parameters:

Hysteresis / 1 to 30 °C (5 °C) Min. activation time / 0 to 600 s (120 s) Min. deactivation time / 0 to 600 s (120 s) UP lag time / 120 to 1200 s (240 s)

16 Parameter

optimization

OFF 6, 9 Co1, 2, 3 -> Fb16 = ON: Automatic parameter optimization

, TV)

P,TN

98 EB 5179 EN

Page 99

Appendix

Fb Function WE Anl

17 Flow sensor OFF

with room tempera

OFF 6, 9 Co1, 2, 3 -> Fb17 = ON: Deactivate flow sensor

ture-dependent control

18 Differential temper

OFF All Co1, 2, 3 -> Fb18 = ON: Only for mixer circuits

ature control using variable weighting factors

Fb Function block, WE Default setting

Co4: DHW heating

Fb Function WE Anl

00 Storage tank sensor

SF1

01 Storage tank sensor

SF2

02 Return flow sensor

DHW circuit

03 Flow sensor

VFS

04 Circulation pump OFF

05 UP OFF at the start

of reverse control

ON Not

1, 3, 6

ON Not

OFF Not

ON Not

OFF 5 Co4 -> Fb05 = ON: UP of pump heating circuit is additionally

Comments Function block parameters / Range of values (default settings)

Function block parameters:

Proportional gain (K Reset time (T

) / 0.1 to 999 (0.5)

) / 1 to 999 s (200 s)

Intended temp. difference / 0 to 40 °C (20 °C) Analog value max. / 0 to 100 % (90 %) Analog value min. / 0 to 100 % (30 %)

Comments Function block parameters / Range of values (default setting)

Co4 -> Fb00 = OFF, only with storage tank thermostat: Co4 -> Fb00 = OFF and Co4 -> Fb01 = OFF

Co4 -> Fb01 = ON: 2 storage tank sensors SF1 and SF2

1, 3,

Co4 -> Fb01 = OFF: 1 storage tank sensor SF1 or with

Co4 -> Fb00 = OFF: Storage tank thermostat Co4 -> Fb02 = ON: Return flow sensor in DHW circuit active

Function block parameters:

1, 2,

Limitation factor / 0 to 25.5 (1.0)

3, 6

Note: Can only be changed after entering the key number Co4 -> Fb03 = ON: Charging temperature limited with VFT,

1, 3,

Co4 -> Fb03 = OFF: Charging temperature regulated with VFT,

regulated with VFS

without VFS Co4 -> Fb04 = ON: ZP continues to run during storage tank

Not

charging

1, 3,

Co4 -> Fb04 = OFF: ZP runs acc. to time schedule

switched off when reverse control starts.

EB 5179 EN 99

Page 100

Appendix

Fb Function WE Anl

06 Reverse control ON Not

1, 3, 6

07 Time until reverse

ON Not

control

08 Thermal

disinfection

09 Three-point step-

OFF Not

1, 3, 6

ON Not ping control for DHW heating

10 Storage tank

system

11 Mixing valve

always active

12 Public holiday and

OFF Not

1, 3, 6

OFF Not

1, 3, 6

OFF vacation data apply to DHW

1, 3, 6

circuit

13 Condensate

accumulation control

14 Continuous-action

control

OFF Not

1, 3, 6

DHW heating

Fb Function block, WE Default setting

Comments Function block parameters / Range of values (default setting)

Co4 -> Fb06 = ON: Reverse control Co4 -> Fb06 = OFF: Set-back operation

Function block parameters:

Activate priority in case of deviation/0to30°C(0°C) Co4 -> Fb07 = ON: Reverse control after 2 minutes

Co4 -> Fb07 = OFF: Reverse control after 10 minutes

1, 2,

3, 6

Co4 -> Fb08 = ON:

Function block parameters:

Day of the week /0 = daily, 1 = Monday, 2, …, 7 (3 = Wednesday) Disinfection temperature / 60 to 90 °C (70 °C) Charging boost / 0 to 30 °C (5 °C) Start time / 00:00 to 23:30 h (00:00 h) Stop time / 00:00 to 23:30 h (04:00 h)

Co4 -> Fb09 = ON: Function block parameters: K

1, 2,

3, 6

(proportional gain) / 0.1 to 50.0 (0.5)

(reset time) / 1 to 999 s (200 s)

(valve transit time) / 15 to 240 s (120 s)

Co4 -> Fb10 = ON: DHW heating in storage tank system

Co4 -> Fb11 = ON: Heating maintained to prevent circulation losses

Co4 -> Fb12 = ON: Function block parameter: Data for heating circuit / 1 to 3 (1)

Not

Co4 -> Fb13 = ON: Function block parameter: Maximum system deviation / 2 to 10 °C (2 °C)

7, 8

For all other systems (Anl) enter under Co5 -> Fb07 Co4 -> Fb14 = ON: Continuous-action control 0 to 10 V

Function block parameters:

(proportional gain) / 0.1 to 50.0 (0.5)

(reset time) / 1 to 999 s (200 s)

(derivative-action time) / 0 to 999 s (0 s)

100 EB 5179 EN

Samson 5100, 5179 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents