Danfoss A337 ECL Comfort Controllers Installation Guide

Contents hide

1 Danfoss A337 ECL Comfort Controllers

2 Specifications

3 Product Usage Instructions

9 Documents / Resources

9.1 References

Danfoss A337 ECL Comfort Controllers

Specifications

Product: ECL Comfort 210/296/310, application A237/A337
Application Key: A237 (order code no. 087H3806)

Compliance:
- ECL Comfort 210 / 310 controllers as of firmware version 1.11
- ECL Comfort 296 controllers as of firmware version 1.58
Remote Control Units: ECA 30 or ECA 31

Internal I/O module: ECA 32 (order code no. 087H3202)

Product Usage Instructions

Daily Use
- Navigate through the system using the controller.
- Understand the symbols displayed on the controller for monitoring.

Settings Overview
- Access the system settings to configure various parameters.

Settings
- Adjust settings such as temperature, system preferences, and communication options.

FAQs

Q: How can I update the controller software?
- A: The controller software is automatically updated when the key is inserted, following specific firmware versions (1.11 for ECL 210/310 and 1.58 for ECL 296).

Q: Can I connect multiple Remote Control Units?
- A: Up to two Remote Control Units (ECA 30 or ECA 31) can be connected for remote monitoring and setting.

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Operating Guide
ECL Comfort 210/296/310, application A237/A337

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Operating Guide ECL Comfort 210/296/310, application A237/A337
1.1 Important safety and product information
1.1.1 Important safety and product information
This Operating Guide is associated with ECL Application Key A237 (order code no. 087H3806).
The ECL Application Key A237 contains 4 subtypes:
· A237.1 and A237.2 (applicable in ECL Comfort 210, 296 and 310) · A337.1 and A337.2 (applicable in ECL Comfort 310)
· A237.1: Heating and DHW heating · A237.2: Heating and DHW charging · A337.1: Heating and DHW heating. External setpoint optional
(0 – 10 V) · A337.2: Heating and DHW charging. External setpoint optional
(0 – 10 V)
The A237 application key also contains a Floor (Screed) Drying Program. See separate documentation. (In English and German language only).
See the Installation Guide (delivered with the application key) for application examples and electrical connections.
The described functions are realized in:
· ECL Comfort 210 for basic solutions · ECL Comfort 296 for basic solutions, M-bus and Ethernet
(Internet) communication · ECL Comfort 310 for advanced solutions, M-bus, Modbus and
Ethernet (Internet) communication.
The Application Key A237 complies with ECL Comfort 210 / 310 controllers as of firmware version 1.11. The Application Key A237 complies also with ECL Comfort 296 controllers as of firmware version 1.58. The firmware (controller software) version is visible at start-up of the controller and in `Common controller settings’ in `System’.
Up to two Remote Control Units, ECA 30 or ECA 31, can be connected for remote monitoring and setting. The built-in room temperature sensor can be utilized.
Together with the ECL Comfort 310, the additional Internal I/O module ECA 32 (order code no. 087H3202) can be used for extra data communication to SCADA:
· Temperature, Pt 1000 (default) · 0 – 10 volt signals · Digital input The set-up of input type can be done by means of the Danfoss Software “ECL Tool”.
Navigation: Danfoss.com > Products & Solutions > District Heating and Cooling > Tools & Software > ECL Tool.
The URL is: https://www.danfoss.com/en/service-and-support/downloads/

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Operating Guide ECL Comfort 210/296/310, application A237/A337
The Internal I/O module ECA 32 is placed in the base part for ECL Comfort 310. ECL Comfort 210 is available as: · ECL Comfort 210, 230 volt a.c. (087H3020) · ECL Comfort 210B, 230 volt a.c. (087H3030)
ECL Comfort 296 is available as: · ECL Comfort 296, 230 volt a.c. (087H3000)
ECL Comfort 310 is available as: · ECL Comfort 310, 230 volt a.c. (087H3040) · ECL Comfort 310B, 230 volt a.c. (087H3050) · ECL Comfort 310, 24 volt a.c. (087H3044)
The B-types have no display and dial. The B-types are operated by means of the Remote Control unit ECA 30 / 31: · ECA 30 (087H3200) · ECA 31 (087H3201)
Base parts for ECL Comfort: · for ECL Comfort 210, 230 volt (087H3220) · for ECL Comfort 296, 230 volt (087H3240) · for ECL Comfort 310, 230 volt and 24 volt (087H3230) Additional documentation for ECL Comfort 210, 296 and 310, modules and accessories is available on http://heating.danfoss.com/. Documentation for ECL Portal: See http://ecl.portal.danfoss.com.
Safety Note To avoid injury of persons and damages to the device, it is absolutely necessary to read and observe these instructions carefully. Necessary assembly, start-up, and maintenance work must be performed by qualified and authorized personnel only. Local legislations must be respected. This comprises also cable dimensions and type of isolation (double isolated at 230 V). A fuse for the ECL Comfort installation is max. 10 A typically. The ambient temperature ranges for ECL Comfort in operation are: ECL Comfort 210 / 310: 0 – 55 °C ECL Comfort 296: 0 – 45 °C. Exceeding the temperature range can result in malfunctions. Installation must be avoided if there is a risk for condensation (dew). The warning sign is used to emphasize special conditions that should be taken into consideration.

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Operating Guide ECL Comfort 210/296/310, application A237/A337
This symbol indicates that this particular piece of information should be read with special attention.
Application keys might be released before all display texts are translated. In this case the text is in English.
Automatic update of controller software (firmware): The software of the controller is updated automatically when the key is inserted (as of controller version 1.11 (ECL 210 / 310) and version 1.58 (ECL 296)). The following animation will be shown when the software is being updated:
Progress bar During update: · Do not remove the KEY
If the key is removed before the hour-glass is shown, you have to start afresh. · Do not disconnect the power If the power is interrupted when the hour-glass is shown, the controller will not work. · Manual update of controller software (firmware): See the section “Automatic / manual update of firmware”
As this Operating Guide covers several system types, special system settings will be marked with a system type. All system types are shown in the chapter: ‘Identifying your system type’.
°C (degrees Celsius) is a measured temperature value whereas K (Kelvin) often is used for temperature differences.

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Operating Guide ECL Comfort 210/296/310, application A237/A337

The ID no. is unique for the selected parameter.

Example 11174

First digit 1 –

Second digit 1 Circuit 1

Last three digits 174 Parameter no.

12174

–

2 Circuit 2

174 Parameter no.

If an ID description is mentioned more than once, it means that there are special settings for one or more system types. It will be marked with the system type in question (e.g. 12174 – A266.9).

Parameters indicated with an ID no. like “1×607” mean a universal parameter. x stands for circuit / parameter group.
Disposal Note This symbol on the product indicates that it may not be disposed of as household waste. It must be handed over to the applicable take-back scheme for the recycling of electrical and electronic equipment. · Dispose of the product through channels provided
for this purpose. · Comply with all local and currently applicable laws
and regulations.

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Operating Guide ECL Comfort 210/296/310, application A237/A337

Installation

2.1 Before you start
The two applications, A237.1 / A337.1 are almost identical. However, A337.1 has some extra functions which are described additionally.

Typical A237.1 / A337.1 application:

The applications A237.1 / A337.1 are very flexible. These are the basic principles:

Heating (circuit 1):
Typically, the flow temperature is adjusted according to your requirements. The flow temperature sensor S3 is the most important sensor. The desired flow temperature at S3 is calculated in the ECL controller, based on the outdoor temperature (S1) and the desired room temperature. The lower the outdoor temperature, the higher the desired flow temperature.

By means of a week schedule, the heating circuit can be in `Comfort’ or `Saving’ mode. The week schedule can have up to 3 `Comfort’ periods / day. A value for the desired room temperature can be set in each of the modes. In Saving mode the heating can be reduced or switched off totally.
The motorized control valve M1 is opened gradually when the flow temperature is lower than the desired flow temperature and vice versa.
The return temperature S5 can be limited, for example not to be too high. If so, the desired flow temperature at S3 can be adjusted (typically to a lower value), thus resulting in a gradual closing of the motorized control valve. Furthermore, the return temperature limitation can be dependent on the outdoor temperature. Typically, the lower the outdoor temperature, the higher the accepted return temperature. In boiler-based heating supply the return temperature should not be too low (same adjustment procedure as above).
If the measured room temperature (directly connected temperature sensor ESM-10 (S2) or Remote control unit ECA 30 / 31) does not equal the desired room temperature, the desired flow temperature can be adjusted.
The circulation pump P1 is ON at heat demand or at frost protection. The circulation pump P1 can be switched OFF when heating the DHW. If the system has a changeover valve (P2 / M2) between the heating and DHW circuit, the circulation pump P1 is ON when heating the DHW.
The heating can be switched OFF when the outdoor temperature is higher than a selectable value.

The shown diagram is a fundamental and simplified example and does not contain all components that are necessary in a system. All named components are connected to the ECL Comfort controller.

List of components:

ECL 210/296/ Electronic controller ECL Comfort 210, 296 or 310 310

Outdoor temperature sensor

Room temperature sensor

Flow temperature sensor, circuit 1

Return temperature sensor, circuit 1

DHW tank temperature sensor, upper

Flow / energy meter (pulse signal)

DHW tank temperature sensor, lower

Circulation pump, heating, circuit 1

DHW pump, circuit 2

DHW circulation pump, circuit 2

Motorized control valve (3-point controlled).

Alternative: Thermo actuator (Danfoss type ABV)

Alarm

A connected flow or energy meter based on pulses (S7) can limit the flow or energy to a set maximum value. Furthermore, the limitation can be in relation to the outdoor temperature. Typically, the lower the outdoor temperature, the higher the accepted flow / power.

The frost protection mode maintains a selectable flow temperature value, for example 10 °C.

An alarm can be activated if the actual flow temperature differs from the desired flow temperature.

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Operating Guide ECL Comfort 210/296/310, application A237/A337
A237.1, ex. a, A337.1, ex. a
During DHW heating, the circulation pump P1 in the heating circuit can: · be switched OFF (DHW priority mode) or · remain ON, as long as the heating temperature at S3 does not
differ more than a set value from the desired temperature (dependent parallel mode) or · be continuously ON. This means same temperature in the heating circuit as the DHW heating temperature (parallel mode).
A237.1 used in ECL 296 / 310
The flow / power signal can come as a pulse signal or an M-bus signal.
A337.1
The desired flow temperature of the heating circuit can, via S10, be controlled by means of an external voltage in the range 0 – 10 volt.
Modbus communication to a SCADA system can be established.
A connected flow or energy meter based on M-bus signal can limit the flow or power to a set maximum value. Furthermore, the limitation can be in relation to the outdoor temperature. Typically, the lower the outdoor temperature, the higher the accepted flow / power. M-bus data can be transferred to the Modbus communication.
Heating in general
Exercise of circulation pumps and control valve in periods without heating demand can be arranged.

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Operating Guide ECL Comfort 210/296/310, application A237/A337

A237.1 / A337.1 example a:

DHW heating start, DHW tank with 1 or 2 temperature sensors
When the measured DHW temperature S6 gets lower than the start temperature, the heating circulation pump P1 is switched OFF and the DHW heating pump P2 is switched ON. The motorized control valve M1 is controlled in order to maintain the heating temperature at S3. A delayed start of the DHW heating pump can be arranged. In this case, S3 must be placed in the heat-exchanger. The DHW heating temperature is determined by the desired DHW temperature at S6 plus the set charging difference. The charging temperature is typically 5 – 10 degrees higher than the desired DHW temperature.
The return temperature S5, when the DHW heating / charging is active, can be limited to a set value.

A237.1 / A337.1 example b:

Charging stop, DHW tank with 1 temperature sensor
When the measured DHW temperature S6 gets higher than the charging-stop temperature, the DHW heating pump P2 is switched OFF. A post-run time can be set.
Charging stop, DHW tank with 2 temperature sensors
When the measured DHW temperature S6 gets 2 K higher than the heating-start temperature AND the lower tank temperature S8 gets higher than the heating-stop temperature, the DHW heating pump P2 is switched OFF. A post-run time can be set.

A237.1 / A337.1 example c:

If the installation has a changeover valve (P2 / M2), also called priority-valve, between the heating and the DHW circuits, the changeover valve is activated at DHW heating demand. The circulation pump (P1) is ON when heating the DHW.
Parallel mode in two-pump applications: If the charging temperature has a value close to the desired flow temperature in the heating circuit, the circulation pump (P1) in the heating circuit will not be switched OFF during DHW heating.
An anti-bacteria function is available for activation on selected days of the week.
The DHW circuit can be connected primarily and the valve `P2 / M2′ operates as ON / OFF valve.
The DHW circulation pump (P3) has a week schedule for up to 3 ON-periods / day.
The DHW circulation pump P3 can be switched OFF during DHW heating / charging.

A237.1 / A337.1 example d:

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Operating Guide ECL Comfort 210/296/310, application A237/A337
Application A237.1 and A337.1, in general
Unused input can, by means of an override switch, be used to override the schedule to a fixed ‘Comfort’ or ‘Saving’ mode.
Modbus communication to a SCADA system can be established. In ECL Comfort 296 / 310 the M-bus data can furthermore be transferred to the Modbus communication.

The two applications, A237.2 / A337.2 are almost identical. However, A337.2 has some extra functions which are described additionally.

Typical A237.2 / A337.2 application:

The applications A237.2 / A337.2 are very flexible. These are the basic principles:

Heating (circuit 1): The heating circuit works as described previously.

A237.2, ex. a, A337.2, ex. a During DHW heating, the circulation pump P1 in the heating circuit can:
· be switched OFF (DHW priority mode)
or
· remain ON, as long as the heating temperature at S3 does not differ more than a set value from the desired temperature (dependent parallel mode)
or
· be continuously ON. This means same temperature in the heating circuit as the DHW heating temperature (parallel mode).
A237.2 used in ECL 296 The flow / power signal can come as a pulse signal or an M-bus signal.
A337.2 The desired flow temperature of the heating circuit can, via S10, be controlled by means of an external voltage in the range 0 – 10 volt.

The shown diagram is a fundamental and simplified example and does not contain all components that are necessary in a system. All named components are connected to the ECL Comfort controller.

List of components:

ECL 210/296/ Electronic controller ECL Comfort 210, 296 or 310 310

Outdoor temperature sensor

Room temperature sensor

Flow temperature sensor, circuit 1

Return temperature sensor, circuit 1

DHW tank temperature sensor, upper

Flow / energy meter (pulse signal)

DHW tank temperature sensor, lower

Circulation pump, heating, circuit 1

DHW pump, circuit 2

DHW circulation pump, circuit 2

DHW charging pump, circuit 2

Motorized control valve (3-point controlled).

Alternative: Thermo actuator (Danfoss type ABV).

Alarm (A337.2 only)

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Operating Guide ECL Comfort 210/296/310, application A237/A337

DHW (circuit 2): By means of a week schedule, the DHW circuit can be in `Comfort’ or `Saving’ mode. The week schedule can have up to 3 `Comfort’ periods / day. A value for the desired DHW temperature can be set in each of the modes.
DHW charging start, DHW tank with 1 or 2 temperature sensors When the measured DHW temperature S6 gets lower than the charging-start temperature, the heating circulation pump P1 is switched OFF and the DHW heating pump P2 is switched ON.
A delayed start of the DHW charging pump P4 can be arranged. Also, it can be arranged that the start of the charging pump depends on the DHW heating temperature. In this case, S4 must be placed in the heat-exchanger.
The DHW heating temperature is determined by the desired DHW temperature at S6 plus the set charging difference. The charging temperature is typically 5 – 10 degrees higher than the desired DHW temperature.
The return temperature S5, when the DHW heating / charging is active, can be limited to a set value.
The DHW heating temperature at S3 is adapted to the desired DHW charging temperature at S4. If the DHW charging temperature at S4 cannot be reached, the ECL controller gradually increases the desired DHW heating temperature at S3 in order to obtain the DHW charging temperature. The ECL controller remembers the adapted S3 temperature. A maximum temperature value can be set.
The motorized control valve M1 is controlled in order to maintain the charging temperature at S4.
DHW charging stop, DHW tank with 1 temperature sensor When the measured DHW temperature S6 gets higher than the charging-stop temperature, the DHW charging pump P4 is switched OFF. A post-run time can be set.
Charging stop, DHW tank with 2 temperature sensors When the measured DHW temperature S6 gets 2 K higher than the charging-start temperature AND the lower tank temperature S8 gets higher than the charging-stop temperature, the DHW charging pump P4 is switched OFF. A post-run time can be set.
If the installation has a changeover valve (P2 / M2), also called priority-valve, between the heating and the DHW circuits, the changeover valve is activated at DHW heating demand. The circulation pump (P1) is ON when heating the DHW.
Parallel mode in two-pump applications: If the charging temperature has a value close to the desired flow temperature in the heating circuit, the circulation pump (P1) in the heating circuit will not be switched OFF during DHW heating.
An anti-bacteria function is available for activation on selected days of the week.
The DHW circulation pump (P3) has a week schedule for up to 3 ON-periods per day.

A237.2 / A337.2 example a: A237.2 / A337.2 example b:

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Operating Guide ECL Comfort 210/296/310, application A237/A337
Application A237.2 and A337.2, in general: Unused input can, by means of an override switch, be used to override the schedule to a fixed ‘Comfort’ or ‘Saving’ mode.
Modbus communication to a SCADA system can be established. In ECL Comfort 310 the M-bus data can furthermore be transferred to the Modbus communication.
A237, in general
Flow / energy limitation.
ECL Comfort 210: The subtypes A237.1 and A237.2 can utilize the flow / power signal coming as a pulse signal.
ECL Comfort 296: The subtypes A237.1 and A237.2 can utilize the flow / power signal coming as a pulse signal or an M-bus signal.
ECL Comfort 310: The subtypes A337.1 and A337.2 can utilize the flow / power signal coming as an M-bus signal.
Alarm
A237.1: Alarm A1 (= relay 4) can be activated:
· if the actual flow temperature differs from the desired flow temperature
· if a temperature sensor or its connection disconnects / short circuits. (See: Common controller settings > System > Raw input overview)
A237.2: No alarm function present
A337.1, A337.2: Alarm A1 (= relay 6) can be activated:
· if the actual flow temperature differs from the desired flow temperature
· if a temperature sensor or its connection disconnects / short circuits. (See: Common controller settings > System > Raw input overview)
Input configuration Inputs (as from S7 and up) which are not part of the application can be configured to be Pt 1000, 0 – 10 Volt or Digital input. This feature makes it possible to communicate extra signals, such as temperatures, pressures, ON / OFF conditions, via Modbus and ECL Portal. The configuration is done by means of the ECL Tool (free software for download) or directly in a dedicated menu in the ECL Portal.
Depending on system type, it is recommended to change some factory settings individually in order to optimize the functionality. These setting changes, if required, are listed below the system types in the section ‘Identifying the system type’.
When the A237 has been uploaded the ECL Comfort controller starts in Manual mode. This can be used for checking the controlled components for correct functionality.

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Operating Guide ECL Comfort 210/296/310, application A237/A337
The controller is pre-programmed with factory settings that are shown in the `Parameter ID overview’ appendix.

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Operating Guide ECL Comfort 210/296/310, application A237/A337
2.2 Identifying the system type Sketch your application The ECL Comfort controller series is designed for a wide range of heating, domestic hot-water (DHW) and cooling systems with different configurations and capacities. If your system differs from the diagrams shown here, you may want to make a sketch of the system about to be installed. This makes it easier to use the Operating Guide, which will guide you step-by-step from installation to final adjustments before the end-user takes over. The ECL Comfort controller is a universal controller that can be used for various systems. Based on the shown standard systems, it is possible to configure additional systems. In this chapter you find the most frequently used systems. If your system is not quite as shown below, find the diagram which has the best resemblance with your system and make your own combinations.
See the Installation Guide (delivered with the application key) for application types / sub-types.
The circulation pump(s) in heating circuit(s) can be placed in the flow as well as the return. Place the pump according to the manufacturer’s specification.

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Operating Guide ECL Comfort 210/296/310, application A237/A337

Advice for settings:
Factory settings in the subtypes will run the most application examples. Some of the application examples need change of dedicated settings.
See the documentation for applications and subtypes, delivered with the application key.
A237.1, ex. a A337.1, ex. a
Two pump system:

Issue:

Navigation:

DHW circuit (2): Pump

MENU Settings Application: ‘Ch.-o. valve / P’

ID no.: 12051

Recommended setting:
ON

A237.1, ex. b A337.1, ex. b
One pump and Change-over valve system:

Issue:

Navigation:

DHW circuit (2): Change-over valve

MENU Settings Application: ‘Ch.-o. valve / P’

ID no.: 12051

Recommended setting:
OFF

A237.1, ex. c A237.1, ex. d A337.1, ex. c A337.1, ex. d
DHW heating connected primarily:

Issue:

Navigation:

DHW circuit (2): Change-over valve
DHW circuit (2): Tank primarily

MENU Settings Application: ‘Ch.-o. valve / P’
MENU Settings Application: ‘Tank, sec./ prim’

ID no.: 12051

Recommended setting:
OFF

12053 ON

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Operating Guide ECL Comfort 210/296/310, application A237/A337

Advice for settings: A237.2, ex. a A337.2, ex. a Two pump system:
Issue:
DHW circuit (2): Pump

Navigation:
MENU Settings Application: ‘Ch.-o. valve / P’

ID no.: 12051

Recommended setting:
ON

A237.2, ex. b A337.2, ex. b
One pump and Change-over valve system:

Issue:

Navigation:

DHW circuit (2): Pump

MENU Settings Application: ‘Ch.-o. valve / P’

ID no.: 12051

Recommended setting:
OFF

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Operating Guide ECL Comfort 210/296/310, application A237/A337
2.3 Mounting
2.3.1 Mounting the ECL Comfort controller
See the Installation Guide which is delivered together with the ECL Comfort controller. For easy access, you should mount the ECL Comfort controller near the system. ECL Comfort 210 / 296 / 310 can be mounted · on a wall · on a DIN rail (35 mm) ECL Comfort 296 can be mounted · in a panel cut-out
ECL Comfort 210 can be mounted in an ECL Comfort 310 base part (for future upgrade). Screws, PG cable glands and rawlplugs are not supplied.
Locking the ECL Comfort 210 / 310 controller In order to fasten the ECL Comfort controller to its base part, secure the controller with the locking pin.

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To prevent injuries to persons or the controller, the controller has to be securely locked into the base. For this purpose, press the locking pin into the base until a click is heard and the controller no longer can be removed from the base. If the controller is not securely locked into the base part, there is a risk that the controller during operation can unlock from the base and the base with terminals (and also the 230 V a.c. connections) are exposed. To prevent injuries to persons, always make sure that the controller is securely locked into its base. If this is not the case, the controller should not be operated!
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Operating Guide ECL Comfort 210/296/310, application A237/A337
The easy way to lock the controller to its base or unlock it is to use a screw driver as lever. Mounting on a wall Mount the base part on a wall with a smooth surface. Establish the electrical connections and position the controller in the base part. Secure the controller with the locking pin.
Mounting on a DIN rail (35 mm) Mount the base part on a DIN rail. Establish the electrical connections and position the controller in the base part. Secure the controller with the locking pin.
Dismounting the ECL Comfort controller In order to remove the controller from the base part, pull out the locking pin by means of a screwdriver. The controller can now be removed from the base part.

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The easy way to lock the controller to its base or unlock it is to use a screw driver as lever.
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Operating Guide ECL Comfort 210/296/310, application A237/A337
Before removing the ECL Comfort controller from the base part, ensure that the supply voltage is disconnected.
2.3.2 Mounting the Remote Control Units ECA 30 / 31 Select one of the following methods: · Mounting on a wall, ECA 30 / 31 · Mounting in a panel, ECA 30 Screws and rawlplugs are not supplied.
Mounting on a wall Mount the base part of the ECA 30 / 31 on a wall with a smooth surface. Establish the electrical connections. Place the ECA 30 / 31 in the base part.
Mounting in a panel Mount the ECA 30 in a panel using the ECA 30 frame kit (order code no. 087H3236). Establish the electrical connections. Secure the frame with the clamp. Place the ECA 30 in the base part. The ECA 30 can be connected to an external room temperature sensor. The ECA 31 must not be mounted in a panel if the humidity function is to be used.

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Operating Guide ECL Comfort 210/296/310, application A237/A337
2.3.3 Mounting the internal I/O module ECA 32
Mounting of the internal I/O module ECA 32 The ECA 32 module (order code no. 087H3202) must be inserted into the ECL Comfort 310 / 310B base part for additional input and output signals in relevant applications.
The connection between the ECL Comfort 310 / 310B and ECA 32 is a 10-pole (2 x 5) connector. The connection is automatically established when the ECL Comfort 310 / 310B is placed on the base part.

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Operating Guide ECL Comfort 210/296/310, application A237/A337
2.4 Placing the temperature sensors
2.4.1 Placing the temperature sensors
It is important that the sensors are mounted in the correct position in your system.
The temperature sensor mentioned below are sensors used for the ECL Comfort 210 / 296 / 310 series which not all will be needed for your application!
Outdoor temperature sensor (ESMT) The outdoor sensor should be mounted on that side of the building where it is less likely to be exposed to direct sunshine. It should not be placed close to doors, windows or air outlets.
Flow temperature sensor (ESMU, ESM-11 or ESMC) Place the sensor max. 15 cm from the mixing point. In systems with heat exchanger, Danfoss recommends that the ESMU-type to be inserted into the exchanger flow outlet.
Make sure that the surface of the pipe is clean and even where the sensor is mounted.
Return temperature sensor (ESMU, ESM-11 or ESMC) The return temperature sensor should always be placed so that it measures a representative return temperature.
Room temperature sensor (ESM-10, ECA 30 / 31 Remote Control Unit)
Place the room sensor in the room where the temperature is to be controlled. Do not place it on outside walls or close to radiators, windows or doors.

Boiler temperature sensor (ESMU, ESM-11 or ESMC) Place the sensor according to the boiler manufacturer’s specification.
Air duct temperature sensor (ESMB-12 or ESMU types) Place the sensor so that it measures a representative temperature.
DHW temperature sensor (ESMU or ESMB-12) Place the DHW temperature sensor according to the manufacturer’s specification.
Slab temperature sensor (ESMB-12) Place the sensor in a protection tube in the slab.

ESM-11: Do not move the sensor after it has been fastened in order to avoid damage to the sensor element. ESM-11, ESMC and ESMB-12: Use heat conducting paste for quick measurement of the temperature.

ESMU and ESMB-12: Using a sensor pocket to protect the sensor will, however, result in a slower temperature measurement.

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Operating Guide ECL Comfort 210/296/310, application A237/A337

Pt 1000 temperature sensor (IEC 751B, 1000 / 0 °C)

Relationship between temperature and ohmic value:

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Operating Guide ECL Comfort 210/296/310, application A237/A337
2.5 Electrical connections 2.5.1 Electrical connections 230 V a.c.
Warning Electric conductors on PCB (Printed Circuit Board) for supply voltage, relay contacts and triac outputs do not have mutual safety distance of minimum 6 mm. The outputs are not allowed to be used as galvanic separated (volt free) outputs. If a galvanic separated output is needed, an auxiliary relay is recommended. 24 Volt controlled units, for example actuators, are to be controlled by means of ECL Comfort 310, 24 Volt version.
Safety Note Necessary assembly, start-up, and maintenance work must be performed by qualified and authorized personnel only. Local legislations must be respected. This comprises also cable size and isolation (reinforced type). A fuse for the ECL Comfort installation is max. 10 A typically. The ambient temperature range for the ECL Comfort in operation is 0 – 55 °C. Exceeding this temperature range can result in malfunctions. Installation must be avoided if there is a risk for condensation (dew).

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Operating Guide ECL Comfort 210/296/310, application A237/A337

The common ground terminal is used for connection of relevant components (pumps, motorized control valves).

ECL 210 / 310

ECL 296

See also the Installation Guide (delivered with the application key) for application specific connections.

Wire cross section: 0.5 – 1.5 mm² Incorrect connection can damage the electronic outputs. Max. 2 x 1.5 mm² wires can be inserted into each screw terminal.

Maximum load ratings: Relay terminals
Triac (= electronic relay) terminals

4 (2) A / 230 V a.c. (4 A for ohmic load, 2 A for inductive load)
0,2 A / 230 V a.c.

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2.5.2 Electrical connections, Pt 1000 temperature sensors See also the Installation Guide (delivered with the application key) for application specific connections.

Sensor Description

Recommended

type

Outdoor temperature

ESMT

sensor*

Room temperature sensor** ESM-10

Flow temperature sensor*** ESM-11 / ESMB /

ESMC / ESMU

A237.2 / A337.2:

ESM-11 / ESMB /

DHW charging temperature ESMC / ESMU

sensor

Return temperature sensor ESM-11 / ESMB /

ESMC / ESMU

DHW tank temperature

ESMB /

sensor, upper****

ESMU

A237.1, A237.2:

Flow / energy meter (pulse

signal)

DHW tank temperature

ESMB /

sensor, lower

ESMU

ECL 310 only:

Not used

S10 ECL 310 only: A337.1, A337.2 Voltage signal (0 – 10 V) for external control of desired flow temperature

* If the outdoor temperature sensor is not connected or the cable is short-circuited, the controller assumes that the outdoor temperature is 0 (zero) °C.
** Only for room temperature sensor connection. The room temperature signal can alternatively be available from a Remote Control Unit (ECA 30 / 31). See ‘Electrical connections, ECA 30 / 31’.
*** The flow temperature sensor must always be connected in order to have the desired functionality. If the sensor is not connected or the cable is short-circuited, the motorized control valve closes (safety function).
**** This sensor is used if only one tank temperature sensor is required.

Wire cross section for sensor connections: Min. 0.4 mm². Total cable length: Max. 200 m (all sensors incl. internal ECL 485 communication bus). Cable lengths of more than 200 m may cause noise sensibility (EMC).

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A337.1 / A337.2:
Connection of voltage signal (010 V) for external control of desired flow temperature

Connection of flow / energy meter with pulse signal
See the Installation Guide (delivered with the application key).
The output of the flow / energy meter can be equipped with an external pull-up resistor if an internal pull-up resistor is not present.

Connection of switch for external override

Pulse based signal for flow / power, applied to input S7 For monitoring: Frequency range is 0.01 – 200 Hz
For limitation: Minimum frequency is recommended to be 1 Hz in order to have a stable control. Furthermore, the pulses must appear regularly.

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Operating Guide ECL Comfort 210/296/310, application A237/A337

2.5.3 Electrical connections, ECA 30 / 31

Terminal Terminal

ECL

ECA 30 / 31

Description
Twisted pair
Twisted pair Ext. room temperature sensor*

Type (recomm.)
Cable 2 x twisted pair
ESM-10

* After an external room temperature sensor has been connected, ECA 30 / 31 must be repowered.

The communication to the ECA 30 / 31 must be set up in the ECL Comfort controller in ‘ECA addr.’

The ECA 30 / 31 must be set up accordingly.

After application setup the ECA 30 / 31 is ready after 25 min. A progress bar in the ECA 30 / 31 is displayed.

If the actual application contains two heating circuits, it is possible to connect an ECA 30 / 31 to each circuit. The electrical connections are done in parallel.

Max. 2 ECA 30 / 31 can be connected to an ECL Comfort 310 controller or to ECL Comfort 210 / 296 / 310 controllers in a master-slave system.

Setup procedures for ECA 30 / 31: See section `Miscellaneous’.

ECA information message: `Application req. newer ECA’: The software (firmware) of your ECA does not comply with the software (firmware) of your ECL Comfort controller. Please contact your Danfoss sales office.

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Some applications do not contain functions related to actual room temperature. The connected ECA 30 / 31 will only function as remote control.
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Total cable length: Max. 200 m (all sensors incl. internal ECL 485 communication bus). Cable lengths of more than 200 m may cause noise sensibility (EMC).

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Operating Guide ECL Comfort 210/296/310, application A237/A337

2.5.4 Electrical connections, master / slave systems
The controller can be used as master or slave in master / slave systems via the internal ECL 485 communication bus (2 x twisted pair cable).
The ECL 485 communication bus is not compatible with the ECL bus in ECL Comfort 110, 200, 300 and 301!

Terminal Description
30 Common terminal +12 V*, ECL 485 communication bus
31 * Only for ECA 30 / 31 and master / slave communication
32 B, ECL 485 communication bus 33 A, ECL 485 communication bus

Type (recomm.)
Cable 2 x twisted pair

2.5.5 Electrical connections, communication
Electrical connections, Modbus
ECL Comfort 210: Non-galvanic isolated Modbus connections ECL Comfort 296: Galvanic isolated Modbus connections ECL Comfort 310: Galvanic isolated Modbus connections

ECL 485 bus cable Maximum recommended length of the ECL 485 bus is calculated like this:

Subtract “Total length of all input cables of all ECL controllers in the master – slave system” from 200 m.

Simple example for total length of all input cables, 3 x ECL:

1 x ECL 3 x ECL 3 x ECL 3 x ECL Total:

Outdoor temp. sensor: Flow temp. sensor: Return temp. sensor: Room temp. sensor:

15 m 18 m 18 m 30 m 81 m

Maximum recommended length of the ECL 485 bus: 200 – 81 m = 119 m

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2.5.6 Electrical connections, communication
Electrical connections, M-bus
ECL Comfort 210: Not implemented ECL Comfort 296: On board, non-galvanic isolated. Max. cable length 50 m. ECL Comfort 310: On board, non-galvanic isolated. Max. cable length 50 m.

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Operating Guide ECL Comfort 210/296/310, application A237/A337

2.6 Inserting the ECL Application Key
2.6.1 Inserting the ECL Application Key
The ECL Application Key contains · the application and its subtypes, · currently available languages, · factory settings: e.g. schedules, desired temperatures,
limitation values etc. It is always possible to recover the factory settings, · memory for user settings: special user / system settings.

ECL Comfort 210 / 310

After having powered-up the controller, different situations might be existing:
1. The controller is new from the factory, the ECL Application Key is not inserted.
2. The controller already runs an application. The ECL Application Key is inserted, but the application needs to be changed.
3. A copy of the controllers settings is needed for configuring another controller.

ECL Comfort 210 / 310

ECL Comfort 296

User settings are, among others, desired room temperature, desired DHW temperature, schedules, heat curve, limitation values etc. System settings are, among others, communication set-up, display brightness etc.
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Automatic update of controller software (firmware): The software of the controller is updated automatically when the key is inserted (as of controller version 1.11 (ECL 210 / 310) and version 1.58 (ECL 296)). The following animation will be shown when the software is being updated:
Progress bar During update: · Do not remove the KEY
If the key is removed before the hour-glass is shown, you have to start afresh. · Do not disconnect the power If the power is interrupted when the hour-glass is shown, the controller will not work. · Manual update of controller software (firmware): See the section “Automatic / manual update of firmware”
The “Key overview” does not inform — through ECA 30 / 31 — about the subtypes of the application key.
Key inserted / not inserted, description: ECL Comfort 210 / 310, controller versions lower than 1.36:
– Take out the application key; for 20 minutes settings can be changed.
– Power up the controller without the application key inserted; for 20 minutes settings can be changed.
ECL Comfort 210 / 310, controller versions 1.36 and up: – Take out the application key; for 20 minutes settings can be changed. – Power up the controller without the application key inserted; settings cannot be changed.
ECL Comfort 296 , controller versions 1.58 and up: – Take out the application key; for 20 minutes settings can be changed. – Power up the controller without the application key inserted; settings cannot be changed.

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Application Key: Situation 1 The controller is new from the factory, the ECL Application Key is not inserted.
An animation for the ECL Application Key insertion is displayed. Insert the Application Key .
Application Key name and Version is indicated (example: A266 Ver. 1.03).
If the ECL Application Key is not suitable for the controller, a “cross” is displayed over the ECL Application Key-symbol.

Action:

Purpose:
Select language
Confirm Select application (subtype) Some keys have only one application.
Confirm with `Yes’
Set ‘Time & Date’ Turn and push the dial to select and change ‘Hours’, ‘Minutes’, ‘Date’, ‘Month’ and ‘Year’. Choose ”Next’
Confirm with `Yes’

Examples:

Go to `Aut. daylight’
Choose whether `Aut. daylight´ * should be active or not

YES or NO

* `Aut. daylight’ is the automatic changeover between summer and winter time.
Depending on the contents of the ECL Application Key, procedure A or B is taking place:
A The ECL Application key contains factory settings: The controller reads / transfers data from the ECL Application Key to ECL controller.
The application is installed, and the controller resets and starts up.

B
The ECL Application key contains changed system settings: Push the dial repeatedly.

‘NO’: ‘YES*:

Only factory settings from the ECL Application Key will be copied to the controller.
Special system settings (differing from the factory settings) will be copied to the controller.

If the key contains user settings: Push the dial repeatedly.

`NO: `YES*:

Only factory settings from the ECL Application Key will be copied to the controller.
Special user settings (differing from the factory settings) will be copied to the controller.

* If `YES’ cannot be chosen, the ECL Application Key does not contain any special settings.
Choose `Start copying’ and confirm with ‘Yes’.

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(Example): The “i” in the upper right corner indicates that – besides the factory settings – the subtype also contains special user / systems settings.

Application Key: Situation 2 The controller already runs an application. The ECL Application Key is inserted, but the application needs to be changed.
To change to another application on the ECL Application Key, the current application in the controller must be erased (deleted).
Be aware that the Application Key must be inserted.

Action:

Purpose: Choose `MENU’ in any circuit

Examples:

Confirm
Choose the circuit selector at the top right corner in the display
Confirm

Choose `Common controller settings’

Confirm

Choose `Key functions’

Confirm

Choose `Erase application’

Confirm with `Yes’

The controller resets and is ready to be configured. Follow the procedure described in situation 1.

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Application Key: Situation 3
A copy of the controllers settings is needed for configuring another controller.

This function is used
· for saving (backup) of special user and system settings
· when another ECL Comfort controller of the same type (210, 296 or 310) must be configured with the same application but user / system settings differ from the factory settings.
How to copy to another ECL Comfort controller:

Action:

Purpose: Choose `MENU’

Examples:

Confirm
Choose the circuit selector at the top right corner in the display
Confirm

Choose ‘Common controller settings’

Confirm

Go to `Key functions’

Confirm

Choose `Copy’

* `ECL’: `KEY’:
** `NO’: `YES’:

Confirm

Choose `To’. `ECL’ or `KEY’ will be indicated. Choose ‘ECL’ or KEY’

* ‘ECL’ or `KEY’.

Push the dial repeatedly to choose

copy direction

Choose `System settings’ or `User

settings’

`NO’ or `YES’

Push the dial repeatedly to choose

`Yes’ or `No’ in `Copy’. Push to confirm.

Choose `Start copying’
The Application Key or the controller is updated with special system or user settings.

Data will be copied from the Application Key to the ECL Controller. Data will be copied from the ECL Controller to the Application Key.

The settings from the ECL controller will not be copied to the Application Key or to the ECL Comfort controller. Special settings (differing from the factory settings) will be copied to the Application Key or to the ECL Comfort controller. If YES can not be chosen, there are no special settings to be copied.

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Language
At application upload, a language must be selected.* If another language than English is selected, the selected language AND English will be uploaded into the ECL controller. This makes service easy for English speaking service people, just because the English language menus can be visible by changing the actual set language into English. (Navigation: MENU > Common controller > System > Language)
If the uploaded language is not suitable, the application must be erased. User and System settings can be saved on the application key before erasing. After new upload with preferred language, the existing User and System settings can be uploaded.
*) (ECL Comfort 310, 24 Volt) If language cannot be selected, the power supply is not a.c. (alternating current).

2.6.2 ECL Application Key, copying data
General principles When the controller is connected and operating, you can check and adjust all or some of the basic settings. The new settings can be stored on the Key.
How to update the ECL Application Key after settings have been changed? All new settings can be stored on the ECL Application Key.
How to store factory setting in the controller from the Application Key? Please read the paragraph concerning Application Key, Situation 1: The controller is new from the factory, the ECL Application Key is not inserted.
How to store personal settings from the controller to the Key? Please read the paragraph concerning Application Key, Situation 3: A copy of the controllers settings is needed for configuring another controller
As a main rule, the ECL Application Key should always remain in the controller. If the Key is removed, it is not possible to change settings.

Factory settings can always be restored. Make a note of new settings in the ‘Settings overview’ table. Do not remove the ECL Application Key while copying. The data on the ECL Application Key can be damaged! It is possible to copy settings from one ECL Comfort controller to another controller provided that the two controllers are from the same series (210 or 310). Furthermore, when the ECL Comfort controller has been uploaded with an application key, minimum version 2.44, it is possible to upload personal settings from application keys, minimum version 2.14.

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The “Key overview” does not inform — through ECA 30 / 31 — about the subtypes of the application key.
Key inserted / not inserted, description: ECL Comfort 210 / 310, controller versions lower than 1.36:
– Take out the application key; for 20 minutes settings can be changed.
– Power up the controller without the application key inserted; for 20 minutes settings can be changed.
ECL Comfort 210 / 310, controller versions 1.36 and up: – Take out the application key; for 20 minutes settings can be changed. – Power up the controller without the application key inserted; settings cannot be changed.
ECL Comfort 296 , controller versions 1.58 and up: – Take out the application key; for 20 minutes settings can be changed. – Power up the controller without the application key inserted; settings cannot be changed.

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2.7 Check list
Is the ECL Comfort controller ready for use?
Make sure that the correct power supply is connected to terminals 9 and 10 (230 V or 24 V). Make sure the correct phase conditions are connected: 230 V: Live = terminal 9 and Neutral = terminal 10 24 V: SP = terminal 9 and SN = terminal 10 Check that the required controlled components (actuator, pump etc.) are connected to the correct terminals. Check that all sensors / signals are connected to the correct terminals (see ‘Electrical connections’). Mount the controller and switch on the power. Is the ECL Application Key inserted (see ‘Inserting the Application Key’). Does the ECL Comfort controller contain an existing application (see ‘Inserting the Application Key’). Is the correct language chosen (see ‘Language’ in ‘Common controller settings’). Is the time & date set correctly (see ‘Time & Date’ in ‘Common controller settings’). Is the right application chosen (see ‘Identifying the system type’). Check that all settings in the controller (see ‘Settings overview’) are set or that the factory settings comply with your requirements. Choose manual operation (see ‘Manual control’). Check that valves open and close, and that required controlled components (pump etc.) start and stop when operated manually. Check that the temperatures / signals shown in the display match the actual connected components. Having completed the manual operation check, choose controller mode (scheduled, comfort, saving or frost protection).

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2.8 Navigation, ECL Application Key A237 / A337

Navigation, application A237.1 / A337.1 (* A237.1 only, ** A337.1 only)

Home
MENU Schedule Schedule circ. P Settings

Flow temperature (circuit 1) Tank temperature (circuit 2) Room limit Return limit
Flow / power limit
Optimization
Control par.

Heating, circuit 1 ID no. Function
Selectable

11178 11177 11004
11182 11183 11015 11031 11032 11033 11034 11035 11036 11037 11085 11028
11119 11117 11118 11116 11112 11113 11109 11115 11114 11011 11012 11013 11014 11026 11020 11021 11179 11043 11174 11184 11185 11186 11187 11189 11024

Heat curve Temp. max. Temp. min. Desired T Ext. desired T** Infl. — max. Infl. — min. Adapt. time High T out X1 Low limit Y1 Low T out X2 High limit Y2 Infl. – max. Infl. – min. Adapt. time Priority Con. T, ret. T lim. Actual Actual limit High T out X1 Low limit Y1 Low T out X2 High limit Y2 Adapt. time Filter constant Input type Units Pulse* Auto saving Boost Ramp Optimizer Pre-stop Based on Total stop Summer, cut-out Parallel operation Motor pr. Xp Tn M run Nz Min. act. time Actuator

ID no.

DHW, circuit 2 Function

12193 12195 12194 12152

Selectable Selectable Charge difference Start difference Stop difference Max. charge T

12030 Limit

12111

Actual Limit

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Navigation, application A237.1 / A337.1, continued (* A337.1 only)

Home
MENU Settings

Application

Heat cut-out

Holiday Alarm

Anti-bacteria Temp. monitor.

Influence overview

Alarm overview
Des. flow T (circuit 1) Des. DHW T (circuit 2)

Heating, circuit 1 ID no. Function

11010
11017 11050 11500 11022 11023 11052 11077 11078 11040 11093 11141 11142 11393 11392 11179 11395 11397 11396 11398 11399

ECA addr.
Demand offset P demand Send desired T P exercise M exercise DHW priority P frost T P heat T P post-run Frost pr. T Ext. input Ext. mode Sum. start, day Sum. start, month Summer, cut-out Summer, filter Winter start, day Winter start, month Winter, cut-out Winter, filter

11147
11148 11149 11150

Selectable
Upper difference Lower difference Delay Lowest temp. Selectable

Return lim. Room lim. Flow / power lim. Holiday Ext. override ECA override Boost Ramp Slave, demand Heating cut-out DHW priority DHW influence SCADA offset Ext. desired T*

ID no.

DHW, circuit 2 Function

12051
12053 12055 12044 12045 12041 12059 12500 12076 12093 12141 12142

Ch.-o. valve / P
Tank, sec. / prim. Circ. P priority Max. DHW time DHW deact. time DHW P post-run P charge delay Send desired T Circ. P frost T Frost pr. T Ext. input Ext. mode

Selectable Selectable
Holiday Ext. override Anti-bacteria SCADA override

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Navigation, application A237.1 / A337.1, Common controller settings (* A337.1 only)

Home MENU Time & Date Holiday Input overview
Log (sensors)
Output override

Outdoor T Room T & desired Flow T & desired Return T & limit Tank T up. & des. Tank T up. & low.

ID no.

Common controller settings
Function
Selectable Selectable Outdoor T Outdoor acc. T Room T Flow T Return T Tank upper T Tank lower T Ext. desired T* Log today Log yesterday Log 2 days Log 4 days

M1, P1, P2, P3, A1

Key functions System

New application Application Factory setting
Copy
Key overview ECL version
Extension Ethernet Portal config M-bus config Energy Meters Raw input overview Alarm Display Communication
Language

Erase application
System settings User settings Go to factory To System settings User settings Start copying
Code no. Hardware Software Build no. Serial no. MAC Production week
Selectable Selectable S1…S10
60058 Backlight 60059 Contrast
38 Modbus addr. 39 Baud 2048 ECL 485 addr. 2150 Service pin 2151 Ext. reset 2050 Language

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Navigation, application A237.2 / A337.2 (* A237.2 only, ** A337.2 only)

Home
Schedule Schedule circ. P Settings

Flow temperature (circuit 1) Tank temperature (circuit 2)

Room limit Return limit

Flow / power limit

Optimization Control par.

Heating, circuit 1 ID no. Function
Selectable

ID no.
12193 12195 12194 12152 12068

DHW, circuit 2
Function Selectable Selectable
Charge difference Start difference Stop difference Max. charge T Flow T adapt time

12030 Limit

12111

Actual Limit

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Navigation, application A237.2 / A337.2, continued (* A337.2 only)

Home MENU Settings
Holiday Alarm Influence overview

Application
Heat cut-out
Anti-bacteria Temp. monitor. Alarm overview Des. flow T (circuit 1) Des. DHW T (circuit 2)

Heating, circuit 1 ID no. Function

11010
11017 11050 11500 11022 11023 11052 11077 11078 11040
11093 11141 11142 11393 11392 11179 11395 11397 11396 11398 11399

ECA addr.
Demand offset P demand Send desired T P exercise M exercise DHW priority P frost T P heat T P post-run
Frost pr. T Ext. input Ext. mode Sum. start, day Sum. start, month Summer, cut-out Summer, filter Winter start, day Winter start, month Winter, cut-out Winter, filter

11147 11148 11149 11150

Selectable Upper difference Lower difference Delay Lowest temp. Selectable
Return lim. Room lim. Flow / power lim. Holiday Ext. override ECA override Boost Ramp Slave, demand Heating cut-out DHW priority DHW influence SCADA offset Ext. desired T*

ID no.

DHW, circuit 2 Function

12051
12055 12044 12045 12041 12059 12042 12500 12076 12093
12141 12142

Ch.-o. valve / P
Circ. P priority Max. DHW time DHW deact. time DHW P post-run P charge delay Char. P post-run Send desired T Circ. P frost T Frost pr. T
Ext. input Ext. mode

Selectable Selectable
Holiday Ext. override Anti-bacteria SCADA override

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Navigation, application A237.2 / A337.2, Common controller settings (* A337.2 only)

Home MENU Time & Date Holiday Input overview
Log (sensors)
Output override

Outdoor T Room T & desired Flow T & desired Return T & limit Tank T up. & des. Tank T up. & low. Charge T

ID no.

Common controller settings
Function
Selectable Selectable Outdoor T Outdoor acc. T Room T Flow T Charge T Return T Tank upper T Tank lower T Ext. desired T* Log today Log yesterday Log 2 days Log 4 days

M1, P1, P2, P3, P4, A1*

Key functions System

New application Application Factory setting
Copy
Key overview ECL version
Extension Ethernet Portal config M-bus config Energy Meters Raw input overview Alarm Display Communication
Language

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Daily use

3.0 Daily use

3.1 How to navigate
You navigate in the controller by turning the dial left or right to the desired position ( ).
The dial has a built-in accellerator. The faster you turn the dial, the faster it reaches the limits of any wide setting range.
The position indicator in the display ( ) will always show you where you are.
Push the dial to confirm your choices ( ).
The display examples are from a two-circuit application: One heating circuit ( ) and one domestic hot-water (DHW) circuit ( ). The examples might differ from your application.

Example shows ECL 210 / 310

Heating circuit ( ):

DHW circuit ( );

Some general settings which apply to the entire controller are located in a specific part of the controller.
To enter `Common controller settings’:

Action:

Purpose: Choose `MENU’ in any circuit

Examples:

Confirm
Choose the circuit selector at the top right corner in the display
Confirm

Choose `Common controller settings’

Confirm

Circuit selector

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3.2 Understanding the controller display
This section describes the function in general for the ECL Comfort 210 / 296 / 310 series. The shown displays are typical and not application related. They might differ from the displays in your application.

Choosing a favorite display Your favorite display is the display you have chosen as the default display. The favorite display will give you a quick overview of the temperatures or units that you want to monitor in general.
If the dial has not been activated for 20 min., the controller will revert to the overview display you have chosen as favorite.

To shift between displays: Turn the dial until you reach the display selector ( ) at the bottom right side of the display. Push the dial and turn to choose your favorite overview display. Push the dial again.

Heating circuit Overview display 1 informs about: actual outdoor temperature, controller mode, actual room temperature, desired room temperature.
Overview display 2 informs about: actual outdoor temperature, trend in outdoor temperature, controller mode, max. and min. outdoor temperatures since midnight as well as desired room temperature.

Overview display 1:

Overview display 2:

Overview display 3 informs about: date, actual outdoor temperature, controller mode, time, desired room temperature as well as shows the comfort schedule of the current day.
Overview display 4 informs about: state of the controlled components, actual flow temperature, (desired flow temperature), controller mode, return temperature (limitation value), influence on desired flow temperature.
The value above the V2 symbol indicates 0100% of the analogue signal (010 V).
Note: An actual flow temperature value must be present, otherwise the circuit’s control valve will close.

Overview display 3:
Example of overview display with Influence indication:

Overview display 4:
Example, favorite display 1 in A230.3, where min. desired room temperature is indicated (22.7):

Dependent on the chosen display, the overview displays for the heating circuit inform you about: · actual outdoor temperature (-0.5) · controller mode ( ) · actual room temperature (24.5) · desired room temperature (20.7 °C) · trend in outdoor temperature ( ) · min. and max. outdoor temperatures since midnight ( ) · date (23.02.2010) · time (7:43) · comfort schedule of the current day (0 – 12 – 24) · state of the controlled components (M2, P2) · actual flow temperature (49 °C), (desired flow temperature (31)) · return temperature (24 °C) (limitation temperature (50))

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The setting of the desired room temperature is important even if a room temperature sensor / Remote Control Unit is not connected.

If the temperature value is displayed as “- -” the sensor in question is not connected. “- – -” the sensor connection is short-circuited.

DHW circuit
Overview display 1 informs about: actual DHW temperature, controller mode, desired DHW temperature as well as the comfort schedule of the current day.

Overview display 1:

Overview display 2 informs about: state of the controlled components, actual DHW temperature, (desired DHW temperature), controller mode, return temperature (limitation value), influence on desired DHW temperature.
Dependent on chosen display, the overview displays for the DHW circuit inform you about: · actual DHW temperature (50.3) · controller mode ( ) · desired DHW temperature (50 °C) · comfort schedule of the current day(0 – 12 – 24) · state of the controlled components (M1, P1) · actual DHW temperature (50 °C), (desired DHW temperature (50)) · return temperature (- – °C) (limitation temperature (30))

Example of overview display with Influence indication:

Overview display 2:

Setting the desired temperature
Depending on the chosen circuit and mode, it is possible to enter all daily settings directly from the overview displays (see also the next page concerning symbols).

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Setting the desired room temperature The desired room temperature can easily be adjusted in the overview displays for the heating circuit.

Action:

Purpose: Desired room temperature

Examples: 20.5

Confirm

Adjust the desired room temperature

21.0

Confirm

This overview display informs about outdoor temperature, actual room temperature as well as desired room temperature.
The display example is for comfort mode. If you want to change the desired room temperature for saving mode, choose the mode selector and select saving.

The setting of the desired room temperature is important even if a room temperature sensor / Remote Control Unit is not connected.

Setting the desired DHW temperature
The desired DHW temperature can easily be adjusted in the overview displays for the DHW circuit.

Action:

Purpose: Desired DHW temperature

Examples: 50

Confirm

Adjust the desired DHW temperature

Confirm

In addition to the information about desired and actual DHW temperature, the today’s schedule is visible.
The display example indicates that the controller is in scheduled operation and in comfort mode.

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Setting the desired room temperature, ECA 30 / ECA 31
The desired room temperature can be set exactly as in the controller. However, other symbols can be present in the display (please see ‘What do the symbols mean?’).

With the ECA 30 / ECA 31 you can override the desired room temperature set in the controller temporarily by means of the override functions:

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3.3 A general overview: What do the symbols mean? Symbol Description Outdoor temp.

Relative humidity indoor Room temp. DHW temp. Position indicator Scheduled mode Comfort mode Saving mode Frost protection mode Manual mode Standby Cooling mode

Temperature Mode

Active output override

Optimized start or stop time

Heating

Cooling DHW

Circuit

Common controller settings

Pump ON

Pump OFF

Fan ON

Fan OFF Actuator opens

Controlled component

Actuator closes
Actuator, analogue control signal
Pump / fan speed

Damper ON

Damper OFF

Symbol

Description Alarm Letter
Event Monitoring temperature sensor connection Display selector
Max. and min. value Trend in outdoor temperature
Wind speed sensor Sensor not connected or not used Sensor connection short-circuited
Fixed comfort day (holiday)

Active influence
Heating active (+) Cooling active (-)
Number of heat exchangers

Additional symbols, ECA 30 / 31:

Symbol 15

Description ECA Remote Control Unit Connection address (master: 15, slaves: 1 – 9)

Day off

Holiday Relaxing (extended comfort period) Going out (extended saving period)

In ECA 30 / 31 only the symbols that are relevant to the application in the controller are displayed.

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3.4 Monitoring temperatures and system components
This section describes the function in general for the ECL Comfort 210 / 296 / 310 series. The shown displays are typical and not application related. They might differ from the displays in your application.

Heating circuit
The overview display in the heating circuit ensures a quick overview of the actual and (desired) temperatures as well as the actual state of the system components.

Display example:

49 °C (31) 24 °C (50)

Flow temperature Desired flow temperature Return temperature Return temperature limitation

DHW circuit
The overview display in the DHW circuit ensures a quick overview of the actual and (desired) temperatures as well as the actual state of the system components.

Display example (heat exchanger):

50 °C (50) -(30)

Flow temperature Desired flow temperature Return temperature: sensor not connected Return temperature limitation

Display example with heat exchanger:

Input overview
Another option to get a quick overview of measured temperatures is the ‘Input overview’ which is visible in the common controller settings (how to enter the common controller settings, see `Introduction to common controller settings’.)
As this overview (see display example) only states the measured actual temperatures, it is read-only.

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3.5 Influence overview
This section describes the function in general for the ECL Comfort 210 / 296 / 310 series. The shown displays are typical and not application related. They might differ from the displays in your application.

The menu gives an overview of the influences on the desired flow temperature. It differs from application to application which parameters are listed. It can be helpful in a service situation to explain unexpected conditions or temperatures among others.
If the desired flow temperature is influenced (corrected) by one or more parameters, it is indicated by a small line with arrow-down, arrow-up or double-arrow:
Arrow-down: The parameter in question reduces the desired flow temperature.
Arrow-up: The parameter in question increases the desired flow temperature.
Double-arrow: The parameter in question creates an override (e.g. Holiday).
Straight line: No active influence.
In the example, the arrow in the symbol points downwards for ‘Room lim.’. This means that the actual room temperature is higher than the desired room temperature which again results in a decrease of the desired flow temperature.

Example of overview display with Influence indication:

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3.6 Manual control
This section describes the function in general for the ECL Comfort 210 / 296 / 310 series. The shown displays are typical and not application related. They might differ from the displays in your application.

It is possible to manually control the installed components.

Manual control can only be selected in favorite displays in which the symbols for the controlled components (valve, pump etc.) are visible.

Action: Purpose:

Examples:

Choose mode selector

Confirm

Choose manual mode

Confirm

Choose pump

Confirm

Switch ON the pump Switch OFF the pump.

Confirm pump mode

Choose motorized control valve

Confirm

Open the valve Stop opening the valve Close the valve Stop closing the valve

Confirm valve mode

To leave manual control, use the mode selector to select the desired mode. Push the dial.
Manual control is typically used when commisioning the installation. The controlled components, valve, pump etc., can be controlled for correct function.

Controlled components

Circuit selector

During manual operation: · All control functions are deactivated · Output override is not possible · Frost protection is not active
When manual control is selected for one circuit, it is automatically selected for all circuits!

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3.7 Schedule
3.7.1 Set your schedule
This section describes the schedule in general for the ECL Comfort 210 / 296 / 310 series. The shown displays are typical and not application related. They might differ from the displays in your application. In some applications, however, there might be more than one schedule. Additional schedules can be found in `Common controller settings’.

The schedule consists of a 7-day week: M = Monday T = Tuesday W = Wednesday T = Thursday F = Friday S = Saturday S = Sunday

The schedule will day-by-day show you the start and stop times of your comfort periods (heating / DHW circuits).

Changing your schedule:

Action:

Purpose: Choose ‘MENU’ in any of the overview displays Confirm
Confirm the choice ‘Schedule’ Choose the day to change
Confirm* Go to Start1 Confirm Adjust the time
Confirm Go to Stop1, Start2 etc. etc. Return to ‘MENU’ Confirm Choose ‘Yes’ or ‘No’ in ‘Save’

Examples:

Confirm

* Several days can be marked
The chosen start and stop times will be valid for all the chosen days (in this example Thursday and Saturday).
You can set max. 3 comfort periods a day. You can delete a comfort period by setting start and stop times to the same value.

Each circuit has its own schedule. To change to another circuit, go to ‘Home’, turn the dial and choose the desired circuit. The start and stop times can be set in half-hourly (30 min. ) intervals.

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Settings overview

4.0 Settings overview

For factory settings and setting range, see appendix “Parameter ID overview”. Parameters indicated with an ID no. like “1×607” mean a universal parameter. x stands for circuit / parameter group.

Setting

ID Page

Heat curve Ext. desired T — (ECL Comfort 310) Actual (actual flow or power) Extended heat cut-out setting Extended winter cut-out setting Day Start time Duration Desired T Desired T (Desired flow temperature) ECA addr. (ECA address, choice of Remote Control Unit) Auto saving (saving temp. dependent on outdoor temp.) Boost Ramp (reference ramping) Optimizer (optimizing time constant) Adapt. time (adaption time) Demand offset Based on (optimization based on room / outdoor temp.) Total stop P exercise (pump exercise) M exercise (valve exercise) Actuator Pre-stop (optimized stop time) Con.T, re. T lim. (Constant temperature mode, return temperature limitation) Limit (return temp. limitation) High T out X1 (return temp. limitation, high limit, X-axis) Low limit Y1 (return temp. limitation, low limit, Y-axis) Low T out X2 (return temp. limitation, low limit, X-axis) High limit Y2 (return temp. limitation, high limit, Y-axis) Infl. – max. (return temp. limitation – max. influence) Infl. – min. (return temp. limitation – min. influence) Adapt. time (adaptation time) P post-run DHW P post-run (DHW pump, post-run) Char. P post-run (DHW charging pump, post-run) Parallel operation Max. DHW time DHW deact. time (DHW deactivation time)

58 60 71 97 97 108 108 109 109 1×004 59 1×010 85 1×011 75 1×012 76 1×013 77 1×014 77 1×015 62 1×017 85 1×020 78 1×021 78 1×022 86 1×023 86 1×024 82 1×026 79
1×028 66
1×030 66 1×031 67 1×032 67 1×033 67 1×034 67 1×035 67 1×036 68 1×037 68 1×040 87 1×041 87 1×042 87 1×043 79 1×044 87 1×045 88

Factory settings in circuit(s)

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Setting

ID Page

P demand Ch.-o. valve / P (changeover valve / pump) DHW priority (closed valve / normal operation) Tank, sec. / prim. (Tank secondarily or primarily connected) Circ. P priority P charge delay (Charging pump, delayed start) Flow T adapt time (Flow temperature, adaptation time) Circ. P frost T P frost T (circulation pump, frost protection temp.) P heat T (heat demand) Priority (priority for return temp. limitation) Frost pr. T (frost protection temp.) Input type Limit (limitation value) Adapt. time (adaptation time) Filter constant Pulse Units High limit Y2 (flow / power limitation, high limit, Y-axis) Low limit Y1 (flow / power limitation, low limit, Y-axis) Low T out X2 (flow / power limitation, low limit, X-axis) High T out X1 (flow / power limitation, high limit, X-axis) Ext. input (external override) Ext. mode (external override mode) Upper difference Lower difference Delay, example Lowest temp. Max. charge T (maximum heating / charging temperature) Motor pr. (motor protection) Temp. min. Temp. max. Summer, cut-out (limit for heating cut-out) Infl. – max. (room temp. limitation, max.) Infl. – min. (room temp. limitation, min.) Xp (proportional band) Tn (integration time constant) M run (running time of the motorized control valve) Nz (neutral zone) Min. act. time (min. activation time gear motor) Charge difference Stop difference

1×050 88 1×051 88 1×052 89 1×053 89 1×055 89 1×059 90 1×068 99 1×076 90 1×077 90 1×078 90 1×085 68 1×093 91 1×109 71 1×111 72 1×112 72 1×113 72 1×114 72 1×115 72 1×116 73 1×117 73 1×118 74 1×119 74 1×141 91 1×142 92 1×147 105 1×148 105 1×149 106 1×150 106 1×152 99 1×174 82 1×177 60 1×178 60 1×179 80 1×182 62 1×183 63 1×184 83 1×185 83 1×186 83 1×187 83 1×189 84 1×193 99 1×194 100

Factory settings in circuit(s)

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Start difference Send desired T

Setting

ID Page
1×195 102 1×500 94

Factory settings in circuit(s)

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Settings

5.0 Settings
5.1 Introduction to Settings
Descriptions of settings (parameter’s functions) are divided into groups as used in the ECL Comfort 210 / 296 / 310 controller’s menu structure. Examples: “Flow temperature”, “Room limit” and so on. Each group starts with a general explanation.
The descriptions of each parameter are in numeric order, related to the parameter’s ID numbers. You might come across differences between the order in this Operating Guide and the ECL Comfort 210 / 296 / 310 controllers.
Some parameter descriptions are related to specific application subtypes. This means that you might not see the related parameter in the actual subtype in the ECL controller.
The note “See Appendix …” refers to the Appendix at the end of this Operating Guide, where parameter’s setting ranges and factory settings are listed.
The navigation hints (for example MENU > Settings > Return limit … ) cover multiple subtypes.

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5.2 Flow temperature / Inlet temperature
The ECL Comfort controller determines and controls the flow temperature related to the outdoor temperature. This relationship is called the heat curve. The heat curve is set by means of 6 coordinate points. The desired flow temperature is set at 6 pre-defined outdoor temperature values. The shown value for the heat curve is an average value (slope), based on the actual settings.

Desired flow temperature

Outdoor temp.
-30 °C -15 °C -5 °C 0 °C 5 °C 15 °C

Desired flow temp.

A 45 °C 40 °C 35 °C 32 °C 30 °C 25 °C

B 75 °C 60 °C 50 °C 45 °C 40 °C 28 °C

C 95 °C 90 °C 80 °C 70 °C 60 °C 35 °C

A: Example for floor heating
B: Factory settings C: Example for radiator heating (high demand)

Your settings

MENU > Settings > Flow temperature / Inlet temperature

Heat curve 1

0.1 … 4.0

1.0

Slope changes

The heat curve can be changed in two ways:
1. The value of the slope is changed (see heat curve examples on next page)
2. The coordinates of the heat curve are changed
Change the value of the slope: Push the dial to enter / change the slope value of the heat curve (example: 1.0). When the slope of the heat curve is changed by means of the slope value, the common point for all heat curves will be a desired flow temperature = 24.6 °C at an outdoor temperature = 20 °C and a desired room temperature = 20.0 °C.

Coordinate changes

Change the coordinates:
Push the dial to enter / change the coordinates of the heat curve (example: -30,75). The heat curve represents the desired flow temperatures at different outdoor temperatures and at a desired room temperature of 20 °C. If the desired room temperature is changed, the desired flow temperature also changes: (Desired room T – 20) × HC × 2.5 where “HC” is the Heat Curve slope and “2.5” is a constant.

The calculated flow temperature can be influenced by the `Boost’ and `Ramp’ functions etc. Example:

Heat curve: Desired flow temp.: Desired room temp.: Calculation (2220) × 1.0 × 2.5 =

1.0 50 °C 22 °C 5

Result:

The desired flow temperature will be corrected from 50 °C to 55 °C.

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Choosing a heat curve slope The heat curves represent the desired flow temperature at different outdoor temperatures and at a desired room temperature of 20 °C.

The small arrows ( ) indicate 6 different outdoor temperature values at which you can change the heat curve.

The ECL Comfort 210 / 296 / 310 controls the DHW temperature according to the desired flow temperature for example under the influence of the return temperature. The desired DHW temperature is set in the overview display.

Actual DHW temp.

50.3: Actual DHW temperature

50:

Desired DHW temperature

Desired DHW temp.

Parameters indicated with an ID no. like “1×607” mean a universal parameter. x stands for circuit / parameter group.

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MENU > Settings > Flow temperature / Inlet temperature

Desired T (Desired flow temperature)

1×004

When the ECL Comfort is in override mode, type “Const. T”, the desired flow temperature can be set. A “Const. T” related return temperature limitation can also be set. See MENU > Settings > Return limit > ‘Con. T, ret. T lim.’

See Appendix “Parameter ID overview”

Override mode When ECL Comfort is in Scheduled mode, a contact (switch) signal can be applied to an input in order to override to Comfort, Saving, Frost Protection or Constant temperature. As long as the contact (switch) signal is applied, the override is active.

The “Desired T” value can be influenced by:
· temp. max. · temp. min. · room temp. limit · return temp. limit · flow / power limit

MENU > Settings > Flow temperature / Inlet temperature

Temp. min.

1×177

See Appendix “Parameter ID overview”
Set the min. flow temperature for the system. The desired flow temperature will not be lower than this setting. Adjust the factory setting, if required.

`Temp. min.’ is overruled if ‘Total stop’ is active in Saving mode or ‘Cut-out’ is active. `Temp. min.’ can be overruled by the influence from the return temperature limitation (see ‘Priority’).
The setting for `Temp. max.’ has higher priority than `Temp. min.’.

MENU > Settings > Flow temperature / Inlet temperature

Temp. max.

1×178

See Appendix “Parameter ID overview”
Set the max. flow temperature for the system. The desired temperature will not be higher than this setting. Adjust the factory setting, if required.

The setting of `heat curve’ is possible for heating circuits only. The setting for `Temp. max.’ has higher priority than `Temp. min.’.

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External signal for desired flow temperature
A voltage (0 – 10 V) can be applied to the input terminal S10 in order to determine the desired flow temperature.
The measured voltage on input S10 must be converted to a temperature value by the controller. When the voltage gets higher, the desired flow temperature increases.
The following settings set up the scaling.

MENU > Settings > Flow temperature / Inlet temperature

Ext. desired T — (ECL Comfort 310)

Circuit

Setting range Factory setting

Read-out only

The actual desired flow temperature is indicated by the unit °C.

Read-out:

–:

External voltage signal is not connected..

°C : External voltage signal converted to desired flow temperature.

Push the dial to see the graph and enter the value sets for the input voltage (1 and 10 volt) and displayed desired flow temperature.

Desired flow temperature: Fixed voltage settings: Factory settings:

10 … 120 °C 1 V and 10 V (1,10) and (10,100)

Example: Relationship between input voltage and displayed desired flow temperature Desired flow temp. (°C)
Volt This example shows that 1 volt corresponds to 10.0 °C and 10 volt correspond to 100 °C.

This means that the `Desired flow temperature’ is 10 °C at 1.0 V and 100 °C at 10 V.
Typically, the higher the voltage, the higher the displayed desired flow temperature.

The external voltage signal must be higher than 1.0 V in order to activate the override.

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5.3 Room limit
The following section is a general description for Room temperature limitation. The actual application might not have both limitation types.
This section is only relevant if you have installed a room temperature sensor or a Remote Control Unit for utilizing the room temperature signal.
In the following description is referred to “flow temperature” in general.
The controller adjusts the desired flow temperature to compensate for the difference between the desired and the actual room temperature.
If the room temperature is higher than the desired value, the desired flow temperature can be reduced.
The ‘Infl. -max.’ (Influence, max. room temp.) determines how much the desired flow temperature should be reduced.
Use this influence type to avoid a too high room temperature. The controller will allow for free heat gains, i.e. solar radiation or heat from a fire place etc.
If the room temperature is lower than the desired value, the desired flow temperature can be increased.
The ‘Infl. -min.’ (Influence, min. room temperature) determines how much the desired flow temperature should be increased.
Use this influence type to avoid a too low room temperature. This could e.g. be caused by windy surroundings.
A typical setting will be -4.0 for ‘Infl. -max.’ and 4.0 for ‘Infl. -min.’

Parameters indicated with an ID no. like “1×607” mean a universal parameter. x stands for circuit / parameter group.

MENU > Settings > Room limit

Adapt. time (adaption time)

1×015

Controls how fast the actual room temperature adapts to the desired room temperature (I control).

See Appendix “Parameter ID overview”

OFF:
Minor value: Major value:

The control function is not influenced by the ‘Adapt. time’. The desired room temperature is adapted quickly.
The desired room temperature is adapted slowly.

The adaptation function can correct the desired room temperature with max. 8 K x heat curve slope value.

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MENU > Settings > Room limit

Infl. – max. (room temp. limitation, max.)

1×182

Determines how much the desired flow temperature will be influenced (decreased) if the actual room temperature is higher than the desired room temperature (P control).

See Appendix “Parameter ID overview”

0.0:

No influence

-2.0:

Minor influence

-5.0:

Medium influence

-9.9:

Maximum influence

X = Room temperature
# 1# = Desired room temperature
# 2 # = Negative influence (1×082) when actual room temp. gets higher than desired room temp.
# 3 # = Positive influence (1×083) when actual room temp. gets lower than desired room temp.
The `Infl. – max.’ and ‘Infl. – min.’ determine how much the room temperature should influence the desired flow temperature.

If the `Infl.’ factor is too high and / or the `Adapt. time’ too low, there is a risk of unstable control.
Example The actual room temperature is 2 degrees too high. The `Infl. – max.’ is set to -4.0. The heat curve slope is 1.8 (see ‘Heat curve’ in ‘Flow temperature’). Result: The desired flow temperature is changed by (2 x -4.0 x 1.8) 14.4 degrees.
In application subtypes, where a heat curve slope value is not present, the heat curve slope value is set to 1: Result: The desired flow temperature is changed by (2 x -4.0 x 1): 8.0 degrees.

MENU > Settings > Room limit

Infl. – min. (room temp. limitation, min.)

1×183

Determines how much the desired flow temperature will be influenced (increased) if the actual room temperature is lower than the desired room temperature (P control).

See Appendix “Parameter ID overview”

9.9:

Maximum influence

5.0:

Medium influence

2.0:

Minor influence

0.0:

No influence

Example The actual room temperature is 2 degrees too low. The `Infl. – min.’ is set to 4.0. The heat curve slope is 1.8 (see ‘Heat curve’ in ‘Flow temperature’). Result: The desired flow temperature is changed by (2 x 4.0 x 1.8) 14.4 degrees.
In application subtypes, where a heat curve slope value is not present, the heat curve slope value is set to 1: Result: The desired flow temperature is changed by (2 x 4.0 x 1): 8.0 degrees.

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5.4 Return limit

The return temperature limitation is based on the outdoor temperature. Typically in district heating systems a higher return temperature is accepted at a decrease in outdoor temperature. The relationship between the return temperature limits and outdoor temperature is set in two coordinates. The outdoor temperature coordinates are set in ‘High T out X1’ and ‘Low T out X2’. The return temperature coordinates are set in ‘High limit Y2’ and ‘Low limit Y1’. The controller automatically changes the desired flow temperature to obtain an acceptable return temperature when the return temperature falls below or gets higher than the calculated limit. This limitation is based on a PI regulation where P (‘Infl.’ factor) responds quickly to deviations and I (‘Adapt. time’) responds slower and over time removes the small offsets between the desired and actual values. This is done by changing the desired flow temperature.

X Y # X1 # # X2 # # Y1# # Y2 #

= Outdoor temperature = Limitation temperature = High T out (1×031) = Low T out (1×033) = Low limit (1×032) = High limit (1×034)

The calculated limit is shown in brackets ( ) in the monitoring display. See the section “Monitoring temperatures and system components”.

DHW circuit
The return temperature limitation is based on a constant temperature value. The controller automatically changes the desired flow temperature to obtain an acceptable return temperature when the return temperature falls below or gets higher than the set limit. This limitation is based on a PI regulation where P (‘Infl.’ factor) responds quickly to deviations and I (‘Adapt. time’) responds slower and over time removes the small offsets between the desired and actual values. This is done by changing the desired flow temperature.

X = Return temperature

# 1 # = Limitation temperature

#2#

= Negative influence (1×035) when return temp. gets higher than limit. temp.

#3#

Negative influence (1×036) when return temp. gets lower than limit. temp.

#4#

= Positive influence (1×036) when return temp. gets lower than limit. temp.

#5#

= Positive influence (1×035) when return temp. gets higher than limit. temp.

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If the `Infl.’ factor is too high and / or the `Adapt. time’ too low, there is a risk of unstable control.
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Example, maximum return temperature limitation; return temperature gets higher than limit
T = Temperature Y = Temperature X = Time # 1 # = Return temperature # 2 # = Return temperature limit # 3 # = Desired flow temperature # 4 # = Action point

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Example, minimum return temperature limitation; return temperature gets lower than limit

T = Temperature Y = Temperature X = Time # 1 # = Return temperature # 2 # = Return temperature limit # 3 # = Desired flow temperature # 4 # = Action point

Parameters indicated with an ID no. like “1×607” mean a universal parameter. x stands for circuit / parameter group.

MENU > Settings > Return limit

Con.T, re. T lim. (Constant temperature mode, return temperature limitation)

1×028

The “Con. T, ret. T limit” is the return temperature limitation value when the circuit is set to override mode type “Const. T” (= Constant temperature).

See Appendix “Parameter ID overview” Value: Set the return temperature limitation

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MENU > Settings > Return limit Limit (return temp. limitation) Set the return temperature value you accept for the system.

1×030

See Appendix “Parameter ID overview”
When the return temperature falls below or gets higher than the set value, the controller automatically changes the desired flow / duct temperature to obtain an acceptable return temperature. The influence is set in ‘Infl. – max.’ and ‘Infl. – min.’.

MENU > Settings > Return limit High T out X1 (return temp. limitation, high limit, X-axis) 1×031 Set the outdoor temperature value for the low return temperature limitation.
See Appendix “Parameter ID overview” The corresponding Y coordinate is set in ‘Low limit Y1’.

MENU > Settings > Return limit

Low limit Y1 (return temp. limitation, low limit, Y-axis)

1×032

Set the return temperature limitation referring to the outdoor temperature value set in ‘High T out X1’.

See Appendix “Parameter ID overview” The corresponding X coordinate is set in ‘High T out X1’.

MENU > Settings > Return limit

Low T out X2 (return temp. limitation, low limit, X-axis)

1×033

Set the outdoor temperature value for the high return temperature limitation.

See Appendix “Parameter ID overview” The corresponding Y coordinate is set in ‘High limit Y2’.

MENU > Settings > Return limit

High limit Y2 (return temp. limitation, high limit, Y-axis)

1×034

Set the return temperature limitation referring to the outdoor temperature value set in ‘Low T out X2’.

See Appendix “Parameter ID overview” The corresponding X coordinate is set in ‘Low T out X2’.

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MENU > Settings > Return limit

Infl. – max. (return temp. limitation – max. influence)

1×035

Determines how much the desired flow temperature will be influenced if the return temperature is higher than the set limit.

See Appendix “Parameter ID overview”
Influence higher than 0: The desired flow temperature is increased, when the return temperature gets higher than the set limit.
Influence lower than 0: The desired flow temperature is decreased, when the return temperature gets higher than the set limit.

Example The return limit is active above 50 °C. The influence is set to 0.5. The actual return temperature is 2 degrees too high. Result: The desired flow temperature is changed by 0.5 x 2 = 1.0 degree.

MENU > Settings > Return limit

Infl. – min. (return temp. limitation – min. influence)

1×036

Determines how much the desired flow temperature will be influenced if the return temperature is lower than the calculated limit.

See Appendix “Parameter ID overview”
Influence higher than 0: The desired flow temperature is increased, when the return temperature gets below the calculated limit.
Influence lower than 0: The desired flow temperature is decreased, when the return temperature gets below the calculated limit.

Example The return limit is active below 50 °C. The influence is set to -3.0. The actual return temperature is 2 degrees too low. Result: The desired flow temperature is changed by -3.0 x 2 = -6.0 degrees.
Normally, this setting is 0 in district heating systems because a lower return temperature is acceptable. Typically, this setting is higher than 0 in boiler systems to avoid a too low return temperature (see also ‘Infl. – max.’).

MENU > Settings > Return limit

Adapt. time (adaptation time)

1×037

Controls how fast the return temperature adapts to the desired return temperature limit (Integration control).

See Appendix “Parameter ID overview”

OFF:
Minor value: Major value:

The control function is not influenced by the `Adapt. time’. The desired temperature is adapted quickly.
The desired temperature is adapted slowly.

The adaptation function can correct the desired flow temperature with max. 8 K.

68 | © Danfoss | 2021.02

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MENU > Settings > Return limit

Priority (priority for return temp. limitation)

1×085

Choose whether the return temperature limitation should overrule the set min. flow temperature `Temp. min.’ .

See Appendix “Parameter ID overview”

OFF: ON:

The min. flow temperature limit is not overruled. The min. flow temperature limit is overruled.

If you have a DHW application: Please also see `Parallel operation’ (ID 11043).
If you have a DHW application: When dependent parallel operation is in function: · Desired flow temperature for the heating circuit will be minimum
limited, when “Priority for return temperature” (ID 1×085) is set to OFF. · Desired flow temperature for the heating circuit will not be minimum limited, when “Priority for return temperature” (ID 1×085) is set to ON.

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5.5 Flow / power limit
Heating circuit
A flow or energy meter can be connected to the ECL controller in order to limit the flow or consumed power. The signal from the flow or energy meter is a pulse signal.
When the application runs in an ECL Comfort 296 / 310 controller, the flow / power signal can be obtained from a flow / energy meter via the M-bus connection.
The flow / power limitation can be based on the outdoor temperature. Typically, in district heating systems a higher flow or power is accepted at lower outdoor temperatures.
The relationship between the flow or power limits and the outdoor temperature is set in two coordinates.
The outdoor temperature coordinates are set in ‘High T out X1’ and ‘Low T out X2’.
The flow or power coordinates are set in ‘Low limit Y1’ and ‘High limit Y2′. Based on these settings, the controller calculates the limitation value.
When the flow / power gets higher than the calculated limit, the controller gradually reduces the desired flow temperature to obtain an acceptable max. flow or power consumption.

# X1 # =

# X2 # =

# Y1# =

# Y2# =

Outdoor temperature Limitation, flow or power High T out (1×119) Low T out (1×118) Low limit (1×117) High limit (1×116)

X= Y= #1# = #2# = #3# =

Time Flow or power Flow or power limit Actual flow or energy Desired flow temperature

If the `Adapt. time’ is too high, there is a risk of unstable control.

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DHW circuit
A flow or heat meter can be connected to the ECL controller in order to limit the flow or consumed power. The signal from the flow or heat meter is a pulse signal.
When the application runs in an ECL Comfort 296 / 310 controller, the flow / power signal can be obtained from a flow / heat meter via the M-bus connection.
When the flow / power gets higher than the calculated limit, the controller gradually reduces the desired flow temperature to obtain an acceptable max. flow or power consumption.

X= Y= #1# = #2# = #3# =

Time Flow or power Flow or power limit Actual flow or energy Desired flow temperature

The parameter ‘Units’ (ID 1×115) has a reduced setting range when the flow / energy signal comes via M-bus.

Parameters indicated with an ID no. like “1×607” mean a universal parameter. x stands for circuit / parameter group.

MENU > Settings > Flow / power limit Input type Choice of input type from flow / energy meter

See Appendix “Parameter ID overview”

OFF:
IM1 IM5: EM1 EM5:

No input Flow / energy meter signal based on pulses.
Flow / energy meter signal from M-bus.

1×109

The setting range for IM and EM depends on chosen subtype.

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MENU > Settings > Flow / power limit Actual (actual flow or power) The value is the actual flow or power based on the signal from flow / energy meter.

MENU > Settings > Flow / power limit

Limit (limitation value)

1×111

This value is in some applications a calculated limitation value, based on the actual outdoor temperature. In other applications the value is a selectable limitation value.

See Appendix “Parameter ID overview”

MENU > Settings > Flow / power limit

Adapt. time (adaptation time)

1×112

Controls how fast the flow / power limitation adapts to the desired limitation.

See Appendix “Parameter ID overview”

OFF:
Minor value: Major value:

The control function is not influenced by the `Adapt. time’. The desired temperature is adapted quickly.
The desired temperature is adapted slowly.

If the `Adapt. time’ is too low, there is a risk of unstable control.

MENU > Settings > Flow / power limit

Filter constant

1×113

The value of the filter constant determines the dampening of the measured value. The higher the value, the more dampening. By this, a too quick change of the measured value can be avoided.

See Appendix “Parameter ID overview”

Minor value:
Major value:

Lower dampening Higher dampening

MENU > Settings > Flow / power limit Pulse Set the value of the pulses from the flow / energy meter.

See Appendix “Parameter ID overview”

OFF:

No input.

1 … 9999: Pulse value.

1×114

Example :
One pulse can represent a number of litres (from a flow meter) or a number of kWh (from a energy meter).

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MENU > Settings > Flow / power limit Units Choice of units for measured values.

1×115

See Appendix “Parameter ID overview”
Units to the left: pulse value. Units to the right: actual and limitation values.
The value from the flow meter is expressed as ml or l. The value from the energy meter is expressed as Wh, kWh, MWh or GWh.
The values for the actual flow and the flow limitation are expressed as l/h or m³/h.
The values for the actual power and the power limitation are expressed as kW, MW or GW.

List for setting range of ‘Units’: ml, l/h l, l/h ml, m³/h l, m³/h Wh, kW kWh, kW kWh, MW MWh, MW MWh, GW GWh, GW
Example 1:
‘Units’ (11115): l, m³/h ‘Pulse’ (11114): 10 Each pulse represents 10 litres and the flow is expressed as cubic meters (m³) per hour.
Example 2:
‘Units’ (11115): kWh, kW (= kilo Watt hour, kilo Watt)
‘Pulse’ (11114): 1 Each pulse represents 1 kilo Watt hour and the power is expressed in kilo Watt.

List for setting range of ‘Units’ when M-bus connection to flow or energy meter: l/h m³/h kW MW GW

MENU > Settings > Flow / power limit

High limit Y2 (flow / power limitation, high limit, Y-axis)

1×116

Set the flow / power limitation referring to the outdoor temperature set in ‘Low T out X2’.

See Appendix “Parameter ID overview” The corresponding X coordinate is set in ‘Low T out X2’.

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MENU > Settings > Flow / power limit

Low limit Y1 (flow / power limitation, low limit, Y-axis)

1×117

Set the flow / power limitation referring to the outdoor temperature set in ‘High T out X1’.

See Appendix “Parameter ID overview” The corresponding X coordinate is set in ‘High T out X1’.

The limitation function can overrule the set ‘Temp. min’ of the desired flow temperature.

MENU > Settings > Flow / power limit

Low T out X2 (flow / power limitation, low limit, X-axis)

1×118

Set the outdoor temperature value for the high flow / power limitation.

See Appendix “Parameter ID overview” The corresponding Y coordinate is set in ‘High limit Y2’.

MENU > Settings > Flow / power limit

High T out X1 (flow / power limitation, high limit, X-axis)

1×119

Set the outdoor temperature value for the low flow / power limitation.

See Appendix “Parameter ID overview” The corresponding Y coordinate is set in ‘Low limit Y1’.

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5.6 Optimization
The section “Optimization” describes specific application related issues. The parameters ‘Auto saving’, ‘Boost’, ‘Optimizer’, ‘Total stop’ are all related to heating mode only. ‘Summer, cut-out’ determine, at rising outdoor temperature, the stop of heating.
Parameters indicated with an ID no. like “1×607” mean a universal parameter. x stands for circuit / parameter group.

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MENU > Settings > Optimization
Auto saving (saving temp. dependent on outdoor temp.) 1×011
Below the set value for the outdoor temperature, the saving temperature setting has no influence. Above the set value for the outdoor temperature, the saving temperature relates to the actual outdoor temperature. The function is relevant in district heating installations in order to avoid a big change in the desired flow temperature after a saving period.

See Appendix “Parameter ID overview”

OFF: Value:

The saving temperature does not depend on the outdoor temperature; the reduction is 100%.
The saving temperature depends on the outdoor temperature. When the outdoor temperature is above 10 °C, the reduction is 100%. The lower the outdoor temperature, the less the temperature reduction. Below the set value, the saving temperature setting has no influence.

Comfort temperature: Saving temperature:

The desired room temperature in Comfort mode
The desired room temperature in Saving mode

The desired room temperatures for Comfort and Saving modes are set in the display overviews.

X= Y= #1# = #2# = #3# =

Outdoor temperature (°C) Desired room temperature (°C) Desired room temperature (°C), Comfort mode Desired room temperature (°C), Saving mode Auto saving temperature (°C), ID 11011

Example:
Actual outdoor temperature (T.out): Desired room temperature setting in Comfort mode: Desired room temperature setting in Saving mode: Setting in `Auto saving’:

5 °C 22 °C 16 °C 15 °C

The condition for the outdoor temperature influence: T.out.influence = (10 – T.out) / (10 – setting) = (10 – (-5)) / (10 – (-15)) = 15 / 25 = 0,6
The corrected desired room temperature in Saving mode: T.room.ref.Saving + (T.out.influence x (T.room.ref.Comfort T.room.ref.Saving)) 16 + (0,6 x (22 – 16)) = 19,6 °C

X = Outdoor temperature (°C) Y = Desired room temperature (°C)
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MENU > Settings > Optimization

Boost

1×012

Shortens the heating-up period by increasing the desired flow temperature by the percentage you set.

See Appendix “Parameter ID overview”
OFF: The boost function is not active.
Value: The desired flow temperature is increased temporarily with the set percentage.
In order to shorten the heating-up period after a saving temperature period, the desired flow temperature can be increased temporarily (max. 1 hour). At optimizing the boost is active in the optimization period (‘Optimizer’). If a room temperature sensor or an ECA 30 / 31 is connected, the boost stops when the room temperature is reached.

MENU > Settings > Optimization

Ramp (reference ramping)

1×013

The time (minutes) in which the desired flow temperature increases gradually to avoid load peaks in the heat supply.

See Appendix “Parameter ID overview”
OFF: The ramping function is not active. Value: The desired flow temperature is increased gradually with
the set minutes.
In order to avoid load peaks in the supply network, the flow temperature can be set to increase gradually after a period with saving temperature. This causes the valve to open gradually.

= Time

= Desired flow temperature

# 1# = Ramping time

= Comfort temperature

= Saving temperature

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MENU > Settings > Optimization

Optimizer (optimizing time constant)

1×014

Optimizes the start and stop times for the comfort temperature period to obtain the best comfort at the lowest energy consumption. The lower the outdoor temperature, the earlier the heating cut-in. The lower the outdoor temperature, the later the heating cut-out. The optimized heating cut-out time can be automatic or disabled. The calculated start and stop times are based on the setting of the optimizing time constant.

See Appendix “Parameter ID overview”

Adjust the optimizing time constant.

The value consists of a two digit number. The two digits have the following meaning (digit 1 = Table I, digit 2 = Table II).

OFF:

No optimization. The heating starts and stops at the times set in the schedule.

10 … 59: See tables I and II.

Table I:
Left digit
12345Table II:
Right digit -0 -1

Heat accumulation of the building light medium heavy medium heavy

System type
Radiator systems
Floor heating systems

Dimensioning temperature
-50 °C
-45 °C

Capacity
large

-5

-25 °C

normal

-9

-5 °C

small

Dimensioning temperature: The lowest outdoor temperature (usually determined by your system designer in connection with the design of the heating system) at which the heating system can maintain the designed room temperature.

Example The system type is radiator, and the heat accumulation of the building is medium. The left digit is 2. The dimensioning temperature is -25 °C, and the capacity is normal. The right digit is 5. Result: The setting is to be changed to 25.

MENU > Settings > Optimization

Based on (optimization based on room / outdoor temp.)

1×020

The optimized start and stop time can be based on either room or outdoor temperature.

See Appendix “Parameter ID overview”

OUT: ROOM:

Optimization based on outdoor temperature. Use this setting if the room temperature is not measured.
Optimization based on room temperature, if measured.

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MENU > Settings > Optimization

Total stop

1×021

Decide whether you want a total stop during the saving temperature period.

Total stop = OFF

See Appendix “Parameter ID overview”

OFF: ON:

No total stop. The desired flow temperature is reduced according to: · desired room temperature in saving mode · auto saving
The desired flow temperature is lowered to the set value in `Frost pr.’ The circulation pump is stopped but frost protection is still active, see ‘P frost T’.

Total stop = ON

= Time

= Desired flow temperature

= Comfort temperature

= Saving temperature

= Frost protection

MENU > Settings > Optimization Pre-stop (optimized stop time) Disable the optimized stop time.

See Appendix “Parameter ID overview”

OFF: ON:

The optimized stop time is disabled. The optimized stop time is enabled.

The min. flow temperature limitation (‘Temp. min.’) is overruled when ‘Total stop’ is ON.

1×026

Example: Optimization of Comfort from 07:00 – 22:00

= Time

# 1# = Schedule

# 2 # = Prestop = OFF

# 3 # = Prestop = ON

# 4 # = Optimized start

# 5 # = Optimized stop

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MENU > Settings > Optimization

Parallel operation

1×043

Choose whether the heating circuit is to operate parallel to the DHW circuit.

See Appendix “Parameter ID overview”

OFF:

DHW heating has 100% priority. The heating circuit circulation pump is OFF during DHW heating.

1 … 99 K: Dependent parallel operation. The heating circuit circulation pump is ON if the difference between DHW heating temperature (charging temperature) and desired flow temperature is less than the set value.

ON:

Parallel operation. The heating circuit circulation pump

is ON during DHW heating.

X = Time Y = Temperature # 1# = Acceptable deviation (Parallel operation, 1×043) # 2 # = Desired DHW heating temperature # 3 # = Actual DHW heating temperature # 4 # = 100% parallel operation # 5 # = 100% DHW priority

MENU > Settings > Optimization Summer, cut-out (limit for heating cut-out)

1×179

Summer, cut-out

See Appendix “Parameter ID overview”
The heating can be switched OFF when the outdoor temperature is higher than the set value. The valve closes and after the post-run time, the heating circulation pump stops. `Temp. min.’ will be overruled.
The heating system switches ON again when the outdoor temperature and the accumulated (filtered) outdoor temperature become lower than the set limit.
This function can save energy.
Set the value for outdoor temperature at which you want the heating system to switch OFF.

X = Time Y = Temperature # 1# = Actual outdoor temperature # 2 # = Cut-out temperature (1×179) # 3 # = Accummulated (filtered) outdoor temperature # 4 # = Heating enabled # 5 # = Heating disabled

The heating cut-out is only active when the controller mode is in scheduled operation. When the cut-out value is set to OFF, there is no heating cut-out.

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5.7 Control parameters
Control of valve
The motorized control valve is controlled by means of 3-point control signal.
Valve control: The motorized control valve is opened gradually when the flow temperature is lower than the desired flow temperature and vice versa. The water flow through the control valve is managed by means of an electric actuator. The combination “actuator” and “control valve” is also called motorized control valve. The actuator can in this way gradually increase or decrease the flow in order to change the supplied energy. Different types of actuators are available.
3-point controlled actuator: The electric actuator contains a reversible gear-motor. Electric “open” and “close” signals come from the electronic outputs of the ECL Comfort controller in order to manage the control valve. The signals are in the ECL Comfort controller expressed as “Arrow-up” (open) and “Arrow-down” (close) and displayed at the valve symbol. When the flow temperature (for example at S3) is lower than the desired flow temperature, short open-signals come from the ECL Comfort controller in order to gradually increase the flow. By this, the flow temperature will align with the desired temperature. Oppositely, when the flow temperature is higher than the desired flow temperature, short close-signals come from the ECL Comfort controller in order to gradually reduce the flow. Again, the flow temperature aligns with the desired temperature. Neither open-signals nor close-signals will come as long as the flow temperature corresponds to the desired temperature.

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Thermo-hydraulic actuator, ABV
Danfoss thermo-actuator type ABV is a slow acting valve actuator. Inside the ABV an electric heat coil will heat a thermostatic element when an electric signal is applied. When heating the thermostatic element it expands in order to manage the control valve.
Two basic types are available: ABV NC (Normal Closed) and ABV NO (normal open). For example, ABV NC keeps a 2-port control valve closed when no open-signals are applied.
Electric open-signals come from the electronic output of the ECL Comfort controller in order to manage the control valve. When open-signals are applied to the ABV NC, the valve gradually opens.
Open-signals are in the ECL Comfort controller expressed as “Arrow-up” (open) and displayed at the valve symbol.
When the flow temperature (for example at S3) is lower than the desired flow temperature, relatively long open-signals come from the ECL Comfort controller in order to increase the flow. By this, the flow temperature will over time be aligned with the desired temperature.
Oppositely, when the flow temperature is higher than the desired flow temperature, relatively short open-signals come from the ECL Comfort controller in order to reduce the flow. Again, the flow temperature aligns, over time, with the desired temperature.
The control of the Danfoss thermo-actuator type ABV uses a unique designed algorithm and is based on the PWM principle (Pulse Width Modulation), where the duration of the pulse determines the management of the control valve. The pulses are repeated each 10 sec.
As long as the flow temperature corresponds to the desired temperature, the duration of the open-signals will remain constant.

Parameters indicated with an ID no. like “1×607” mean a universal parameter. x stands for circuit / parameter group.

MENU > Settings > Control parameters

Actuator

ABV / GEAR

Selection of valve actuator type.
ABV: Danfoss type ABV (thermo actuator). GEAR: Gear motor based actuator.

1×024 GEAR

When selecting “ABV”, the control parameters: · Motor protection (ID 1×174) · Xp (ID 1×184) · Tn (ID 1×185) · M run (ID 1×186) · Nz (ID 1×187) · Min. act. time (ID 1×189) are not considered.

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MENU > Settings > Control parameters

Motor pr. (motor protection)

1×174

Prevents the controller from unstable temperature control (and resulting actuator oscillations). This can occur at very low load. The motor protection increases the lifetime of all involved components.

See Appendix “Parameter ID overview”

OFF: Value:

Motor protection is not activated.
Motor protection is activated after the set activation delay in minutes.

MENU > Settings > Control parameters Xp (proportional band)

1×184

See Appendix “Parameter ID overview”
Set the proportional band. A higher value will result in a stable but slow control of the flow temperature.

MENU > Settings > Control parameters Tn (integration time constant)

1×185

See Appendix “Parameter ID overview”
Set a high integration time constant (in seconds) to obtain a slow but stable reaction to deviations.
A low integration time constant will make the controller react fast but with less stability.

MENU > Settings > Control parameters

M run (running time of the motorized control valve)

1×186

`M run’ is the time in seconds it takes the controlled component to move from fully closed to fully open position.

See Appendix “Parameter ID overview”
Set the `M run’ according to the examples or measure the running time by means of a stop watch.

How to calculate the running time of a motorized control valve The running time of the motorized control valve is calculated using the following methods: Seated valves
Running time = Valve stroke (mm) x actuator speed (sec. / mm)

Example:

5.0 mm x 15 sec. / mm = 75 sec.

Rotating valves Running time = Turning degrees x actuator speed (sec. / degr.)

Example:

90 degr. x 2 sec. / degr. = 180 sec.

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MENU > Settings > Control parameters

Nz (neutral zone)

1×187

When the actual flow temperature is within the neutral zone, the controller does not activate the motorized control valve.

See Appendix “Parameter ID overview”
Set the acceptable flow temperature deviation.
Set the neutral zone to a high value if you can accept a high variation in flow temperature.

The neutral zone is symmetrical around the desired flow temperature value, i.e. half the value is above and half the value is below this temperature.

MENU > Settings > Control parameters

Min. act. time (min. activation time gear motor)

1×189

The min. pulse period of 20 ms (milliseconds ) for activation of the gear motor.

See Appendix “Parameter ID overview”

Setting example 2 10 50

Value x 20 ms 40 ms 200 ms
1000 ms

The setting should be kept as high as acceptable to increase the lifetime of the actuator (gear motor).

If you want to tune the PI regulation precisely, you can use the following method:

· Set the `Tn’ (integration time constant) to its max. value (999 sec.).
· Decrease the value for the `Xp’ (proportional band) until the system starts hunting (i.e. gets unstable) with a constant amplitude (it might be necessary to force the system by setting an extreme low value).
· Find the critical time period on the temperature recorder or use a stop watch.

Temp.

Critical time period

Time
This critical time period will be characteristic for the system, and you can evaluate the settings from this critical period. `Tn’ = 0.85 x critical time period `Xp’ = 2.2 x proportional band value in the critical time period
If the regulation seems to be too slow, you can decrease the proportional band value by 10%. Make sure there is a consumption when you set the parameters.

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5.8 Application
The section “Application” describes specific application related issues. Some of the parameter descriptions are universal for different application keys.

Parameters indicated with an ID no. like “1×607” mean a universal parameter. x stands for circuit / parameter group.

MENU > Settings > Application

ECA addr. (ECA address, choice of Remote Control Unit)

1×010

Decides the room temperature signal transfer and communication with the Remote Control Unit.

See Appendix “Parameter ID overview”

OFF:
A: B:

No Remote Control Unit. Only room temperature sensor, if any. Remote Control Unit ECA 30 / 31 with address A.
Remote Control Unit ECA 30 / 31 with address B.

The Remote Control Unit must be set accordingly (A or B).

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MENU > Settings > Application

Demand offset

1×017

The desired flow temperature in heating circuit 1 can be influenced by the demand for a desired flow temperature from another controller (slave) or another circuit.

Heating application

See Appendix “Parameter ID overview”

OFF: Value:

The desired flow temperature in circuit 1 is not influenced by the demand of any other controller (slave or circuit 2).
The desired flow temperature is increased by the set value in `Demand offset’, if the demand of the slave / circuit 2 is higher.

= Time

= Desired flow temperatures

# 1 # = Demand offset

# 2 # = Desired flow temperature, master

# 3 # = Desired flow temperature, slave

The function of `Demand offset’ can compensate for heat losses between master and slave controlled systems.

‘Demand offset’ with a value is to be used in the Master controller only.

When setting “Demand offset” to a value, the return temperature limitation will react according to the highest limitation value (Heating / DHW).

MENU > Settings > Application

P exercise (pump exercise)

1×022

Exercises the pump to avoid blocking in periods without heat demand.

See Appendix “Parameter ID overview”

OFF: ON:

The pump exercise is not active.
The pump is switched ON for 1 minute every third day at noon (12:14 hours).

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MENU > Settings > Application

M exercise (valve exercise)

1×023

Exercises the valve to avoid blocking in periods without heat demand.

See Appendix “Parameter ID overview”

OFF: ON:

The valve exercise is not active.
The valve opens for 7 minutes and closes for 7 minutes every third day at noon (12:00 hours).

MENU > Settings > Application P post-run

1×040

Heating applications: The circulation pump in the heating circuit can be ON for a number of minutes (m) after heating stop. Heating stop is when the desired flow temperature gets lower than the setting in ‘P heat T’ (ID no. 1×078). Cooling applications: The circulation pump in the cooling circuit can be ON for a number of minutes (m) after cooling stop. Cooling stop is when the desired flow temperature gets higher than the setting in ‘P cool T’ (ID no. 1×070). This P post-run function can utilize the remaining energy in for example a heat exchanger.

See Appendix “Parameter ID overview”

0: Value:

The circulation pump stops immediately after heating or cooling stop.
The circulation pump is ON for the set time after heating or cooling stop.

MENU > Settings > Application

DHW P post-run (DHW pump, post-run)

1×041

Set the DHW pump post-run time (minutes). The DHW pump can continue to be switched ON after the DHW heating procedure in order to utilize the remaining heat in the heat exchanger / boiler.

See Appendix “Parameter ID overview” Value: Set the number of minutes for the post-run.

MENU > Settings > Application

Char. P post-run (DHW charging pump, post-run)

1×042

Set the DHW charging pump post-run time (minutes). The DHW charging pump can continue to be switched ON after the DHW heating procedure in order to utilize the remaining heat in the heat exchanger.

See Appendix “Parameter ID overview” Value: Set the number of minutes for the post-run.

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MENU > Settings > Application

Max. DHW time

1×044

Set the max DHW heating time (minutes). When DHW heating is active and the set ‘Max. DHW time’ expires, DHW heating is deactivated.

See Appendix “Parameter ID overview”

OFF: Value:

If the DHW temperature is lower than the DHW charging cut-in temperature, the DHW charging remains active for unlimited period of time. If the DHW temperature is higher than the DHW charging cut-in temperature, the charging is deactivated after 35 minutes.
The DHW heating / charging is deactivated when the set ‘Max. DHW time’ (in minutes) expires.

MENU > Settings > Ap

Documents / Resources

Danfoss A337 ECL Comfort Controllers [pdf] Installation Guide
210, 296, 310, A237, A337, A337 ECL Comfort Controllers, ECL Comfort Controllers, Comfort Controllers, Controllers

References

User Manual

Danfoss A337 ECL Comfort Controllers

Specifications

Product Usage Instructions

FAQs

Installation

Daily use

Settings overview

Settings

Documents / Resources

References

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