Danfoss C37 User Manual
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Danfoss C37 User Manual

Danfoss C37 User Manual

Ecl comfort
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C37
ECL Comfort
User's Guide
*087R8070*
*VI7CE602*
Installer's Guide

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Summary of Contents for Danfoss C37

  • Page 1 ECL Comfort User's Guide *087R8070* *VI7CE602*  Installer's Guide...
  • Page 2 The shown diagram is a fundamental and simplified example and does not contain all components that are necessary in a system. If the system you are about to install differs from the shown diagram of a standard heating system, feel free to sketch an outline for comparison.

  • Page 3: Table Of Contents

    Table of Contents Sections in the Installer’s Guide The documentation for the ECL Comfort controller is composed of numbered sections. Only sections relevant to your ECL Comfort controller are included here. Before you start Installation Identifying the system type Mounting the ECL Comfort controller Electrical connections 230 V a.c.

  • Page 5: Before You Start

    Before you start Sketch your application The ECL Comfort controller series is designed for a wide range of heating, hot-water and cooling systems with different configurations and capacities. If your system differs from the diagrams shown in section 10, you may want to make a sketch of the system about to be installed.

  • Page 6: Identifying The System Type

    Identifying the system type 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 section 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.
  • Page 7 10.2 Indirectly connected system and secondarily connected DHW storage charging system (DHW priority) System settings Circuit Line Description Recomm. setting DHW charging pump / changeover valve Closed valve / normal operation Desired flow temperature at DHW charging P3 = DHW circulation pump P2/M2* For the control of the actuator use either relay output P2 or triac output M2, see section 12.

  • Page 8: System Settings

    10.4 Indirectly connected system and secondarily connected DHW storage tank with built-in heating coil (DHW priority) System settings Circuit Line Description Recomm. setting DHW charging pump / changeover valve Closed valve / normal operation Desired flow temperature at DHW charging P3 = DHW circulation pump P2/M2* For the control of the actuator use either relay output P2 or triac...
  • Page 9 The following heating systems are only applicable with relay module ECA 80 10.6 Indirectly connected system and secondarily connected DHW storage charging system System settings Circuit Line Description Recomm. setting DHW charging pump / changeover valve Closed valve / normal operation Desired flow temperature at DHW charging P3 = DHW circulation pump...

  • Page 10: Mounting The Ecl Comfort Controller

    Mounting the ECL Comfort controller For easy access, you should mount the ECL Comfort controller near the system. Select one of the three following methods: • Mounting on a wall • Mounting on a DIN rail • Mounting in a panel Screws and rawlplugs are not supplied.

  • Page 12: Electrical Connections 230 V A.c

    If an ECA 80 module is to be applied, the jumpers 14-26-29 must be established additionally. 230 V a.c. connections - with safety thermostat Optional This circuit diagram is only valid if Danfoss actuators are used Establish these jumpers: 1-8-10-12-14 Safety thermostat: 4, 5 and 10 with ST- (safety thermostat) and jumper 2 to common N-terminal.
  • Page 13 Terminal Description Max. load 1 (L) Supply voltage 230 V a.c. 2 (N) Supply voltage 230 V a.c. 3 M1 Actuator - open 0.2 A / 230 V a.c. Actuator - close 4 M1 0.2 A / 230 V a.c. alt.

  • Page 14: Connecting And Placing The Temperature Sensors

    Connecting and placing the temperature sensors Connecting the temperature sensors and the bus Terminal Description Type (recomm.) 15 and 16 System device bus*, connections for room panel** / remote control** / ECA 60 / 62 (relay module) ECA 61 / 63 17 and 16 S1 Outdoor temperature ESMT sensor...
  • Page 15 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.
  • Page 16 Connecting the room panel / remote control The ECA 60 / 61 / 62 / 63 is activated by the setting in line 10 (section 32). The ECA 60 / 61 / 62 / 63 is powered by the system device bus which means that the bus must be active.

  • Page 18: Inserting The Ecl Card

    Inserting the ECL Card How to insert your ECL Card the first time After the power has been switched on, open the lid on the front side of the controller. Place the ECL Card with the yellow side facing you. This enables the controller to read the ECL Card data.
  • Page 19 Understanding the ECL Card The ECL Card contains factory settings for a standard system. If the actual system differs from the standard system, the controller must be adjusted accordingly. After the adjustment, the new settings should be stored on the ECL Card.

  • Page 20: Adjusting The Ecl Card Settings

    Adjusting the ECL Card settings General principles When the controller is connected and operating you can check and adjust all or some of the basic settings. Turn the ECL Card so that the grey side is facing you (see the example below).

  • Page 21: Setting The Time And Date - Line A

    Setting the time and date - line A Actual time Year Month, day Use the shift button to switch between minutes, hours, years, months and days. Set the correct time and date. In case of a power break, which lasts longer than 12 hours, the time and the date have to be set again.

  • Page 22: Monitoring Temperatures And System Units - Line B

    Monitoring temperatures and system units - line B Controlled units Flow temp. Return temp. (S3) (S4) Push and hold the shift button to see: - the calculated flow temperature - the desired return temperature limitations. This display can also show the actual and desired flow and return temperatures during DHW charging.

  • Page 23: Manual Control - Line B

    Manual control - line B Shift to manual mode. Controlled units Controller mode Choose the unit you want to control. The selected unit symbol will blink. Controlled units are switched OFF or ON when the relevant button is pushed. The motorized actuator (gear motor / damper) closes or opens...

  • Page 24: Setting The Heat Curve - Line C

    Setting the heat curve - line C Slope Displacement Slope Circuit Setting range Factory setting I / (II) 0.2 ... 3.4 1.8 / (1.8) The symbol for the slope of the heat curve will blink. Adjust the slope of the heat curve, if required.
  • Page 25 Parallel displacement Circuit Setting range Factory setting I / (II) -9 ... 9 K 0 / (0) K If you want to adjust the parallel displacement of the heat curve, push the shift button. The symbol for the parallel displacement will blink. Make your adjustments.

  • Page 26: Heating Cut-Out - Line

    Heating cut-out - line 1 Limit for heating cut-out Circuit Setting range Factory setting 10 ... 30 °C 20 °C Set the outdoor temperature limit at which you want the heating system to stop. The valve closes and after about 3 min. the heating circulation pump stops.

  • Page 27: Flow Temperature Limits - Line

    Flow temperature limits - line 2 Min. flow Max. flow temp. temp. Setting range Flow temperature limits, min. and max. Circuit Setting range Factory setting I / (II) 10 ... 150 °C min. 10 / (10), max. 90 / (90) °C The mentioned setting range and factory settings may vary from the settings on your ECL Card.

  • Page 28: Room Temperature Influence - Line

    Room temperature influence - line 3 This section is only relevant if you have installed a room sensor or ECA 60 / ECA 61 / ECA 62 / ECA 63. Min. Max. influence influence Room temperature influence Circuit Setting range Factory setting I / (II) 0 ...
  • Page 29 B: Reference room temperature control Used if your heating system is not equipped with radiator thermostats and you select the room with room sensor as a temperature reference for the rest of the rooms. (However, should you have a few radiator thermostats installed, make sure that they are fully open).

  • Page 30: Control Parameters - Lines

    Control parameters - lines 4-7 Proportional band, Xp Circuit Setting range Factory setting I / (II) 1 ... 250 K 80 / (80) K Set the proportional band. A higher value will result in a stable but slow control of the flow temperature. Integration time constant, Tn Circuit Setting range...
  • Page 31 Neutral zone, Nz Circuit Setting range Factory setting I / (II) 0 ... 9 K 3 / (3) K Set the neutral zone to a high value if you can accept a high variation in flow temperature. When the actual flow temperature is within the neutral zone, the controller does not activate the motorized valve.

  • Page 32: Cut-In And Cut-Out Temperature At Dhw Charging - Lines 1-2, Circuit

    Cut-in and cut-out temperature at DHW charging - lines 1-2, circuit II The controller can control the DHW temperature with either one or two tank temperature sensor(s). The controller will automatically register the number of sensors. Cut-out temperature difference - (lower sensor)* Circuit Setting range Factory setting...
  • Page 33 One sensor (S6) Temp. Cut-out difference - line 1 Cut-in difference - line 2 Cut-in Cut-out Charging temperature Time P2 / P3 If you only have one sensor installed (S6), this sensor will measure the cut-out temperature as well as the cut-in temperature. Two sensors (S5 + S6) Temp.

  • Page 34: Check List

    Check list ✓ Is the ECL Comfort controller ready for use? Make sure that the correct power supply is connected to terminals 1 (Live) and 2 (Neutral). See section 12 or 13. Check that the required actuators, pumps, fans, dampers and burners are connected to the correct terminals.
  • Page 35 ✓ Adapting the ECL Comfort controller to the system Turn the ECL Card so that the grey side faces you and push , if necessary. Set the time and the date (line A). See section 17. Check that all settings in the controller (sections 30 and 31) are set or that the factory settings comply with your requirements.

  • Page 36: Ecl Card Settings

    ECL Card settings (circuit I) Time and date Section 17 System information Sections 18 & 19 Heat curve Section 20 Setting ranges Factory settings Your settings Slope 0.2 ... 3.4 See section 20 Parallel displacement -9 ... 9 K See section 20 Limit for heating cut-out 10 ...

  • Page 37: Time And Date

    ECL Card settings (circuit II) Time and date Section 17 System information Sections 18 & 19 Setting ranges Factory settings Your settings Cut-out temperature difference 1 ... 90 K 15 K See section 27 Cut-in temperature difference 1 ... 90 K 20 K See section 27...

  • Page 38: Service Parameters

    Service parameters (10-199) Circuit I (Heating) Lines Setting ranges Factory settings Your settings 10 Choice of room panel / remote control 0 ... 5 11 Setback temperature dependent on outdoor temperature OFF / -29 ... 10 °C -15 °C °C 12 Boost 0 ...
  • Page 39 Service parameters (10-199) Circuit I (Heating) Lines Setting ranges Factory settings Your settings 147 Acceptable temperature deviation below desired flow temperature (ΔT1 ALARM OFF / 1 ... 30 K 148 Acceptable temperature deviation above the desired flow temperature (ΔT2 ALARM 1 ...

  • Page 40: Adjusting The Service Parameters

    I - and circuit II, if available. If you want to copy the new settings to the ECL Card (recommended by Danfoss), see section 34. Make a note of your new settings in the parameter list in section When you have entered all your personal settings, turn the ECL Card over so that the yellow side faces you.
  • Page 41 Service parameter(s) 10-11 10 Choice of room panel / remote control Circuit Setting range Factory setting (I) / (II) 0 ... 5 (0) / (0) Decides the communication with the room panel or remote control. Please note that the room panel / remote control is only active if the system device bus is active.
  • Page 42 Service parameter(s) 12-13 12 Boost Circuit Setting range Factory setting (I) / (II) 0 ... 99% (0) / (0)% Shortens the heating-up period by increasing the desired flow temperature by the percentage you set. Set the percentage at which you want the desired flow temperature increased temporarily.
  • Page 43 Service parameter(s) 14-15 14 Optimizing time constant Circuit Setting range Factory setting (I) / (II) OFF / 10 ... 59 (OFF) / (OFF) Optimizes the start and stop times for the comfort temperature period to obtain the best comfort at the lowest energy consumption.
  • Page 44 Service parameter(s) 16-17 16 Frost protection by DHW circulation pump Circuit Setting range Factory setting ON / OFF When the outdoor temperature is lower than 2 °C (frost risk), the controller automatically switches ON the circulation pump to protect the system. ON: When the outdoor temperature is lower than 2 °C, the circulation pump is switched OFF: The circulation pump is switched ON and...
  • Page 45 Service parameter(s) 20-21 20 Optimization based on room / outdoor temperature Circuit Setting range Factory setting (I) / (II) ON / OFF (OFF) / (OFF) The optimized start and stop time can be based on either room or outdoor temperature. ON: Optimization based on room temperature, if measured.
  • Page 46 Service parameter(s) 22-24 22 Pump exercise Circuit Setting range Factory setting I / (II) ON / OFF ON / (ON) Exercises the pump to avoid blocking in periods without heat demand. ON: The pump is switched ON for 1 minute every third day around noon.
  • Page 47 Service parameter(s) 30-34 30 Return temperature limitation Circuit Setting range Factory setting 10 ... 110 °C 60 °C Set the return temperature you accept for the heating / DHW circuit. Set the acceptable return temperature limit. When the return temperature falls below or gets higher than the set value, the controller automatically changes the desired flow temperature to obtain an acceptable return temperature.
  • Page 48 Service parameter(s) 31-34 31 Return temperature limitation - upper limit (X-axis) Circuit Setting range Factory setting (I) / (II) -60 ... 20 °C (15) / (15) °C Set the outdoor temperature value (see drawing). Set the outdoor temperature value (X coordinate) for the upper limit.
  • Page 49 Service parameter(s) 35 35 Return temperature influence - max. limitation Circuit Setting range Factory setting (I) / (II) -9.9 ... 0 ... 9.9 (-2.0) / (-2.0) Set the influence from the return temperature on the desired flow temperature. Set the influence of the max. return temperature limitation (set in line 30 or lines 31-34).
  • Page 50 Service parameter(s) 36 36 Return temperature influence - min. limitation Circuit Setting range Factory setting (I) / (II) -9.9 ... 0 ... 9.9 (0.0) / (0.0) Set the influence from the return temperature on the desired flow temperature. Set the influence of the min. return temperature limitation (set in line 30 or lines 31-34).
  • Page 51 Service parameter(s) 37-41 37 Time constant for return temperature limitation Circuit Setting range Factory setting (I) / (II) OFF / 1 ... 50 (25) / (25) Controls how fast the actual return temperature adapts to the desired return temperature limitation. Adjust the time constant for the return limitation.
  • Page 52 Service parameter(s) 43 43 Priority or parallel operation Circuit Setting range Factory setting OFF / 1 ... 99 K Choose whether the DHW should have priority or the heating operation should be limited at DHW charging if the circuits are operated in parallel.
  • Page 53 Service parameter(s) 44-51 44 Max. DHW charging time Circuit Setting range Factory setting OFF / 1 ... 100 min. When the set max. DHW charging time expires, the charging is deactivated. OFF: If the DHW temperature is lower than the DHW charging cut-in temperature, the DHW charging remains active for unlimited time.If the DHW temperature is higher than...
  • Page 54 Service parameter(s) 52-55 52 Closed valve / normal operation Circuit Setting range Factory setting (I) / (II) ON / OFF (OFF) / (OFF) The heating circuit can be closed when the controller acts as slave and when DHW charging is active in the master. ON: The valve in the heating circuit is closed* during active DHW charging in the master controller.
  • Page 55 Service parameter(s) 78-90 78 Desired temperature for anti-bacteria function Circuit Setting range Factory setting OFF / 1 ... 100 °C Set the desired temperature for the anti-bacteria function. The DHW will be charged once a week at the set temperature to protect against bacteria.
  • Page 56 Service parameter(s) 141 141 Override input selection Circuit Setting range Factory setting (I) / (II) OFF / 1 ... 6 (OFF) / (OFF) Choose an unused temperature sensor input for overriding the schedule for circuit I and / or circuit II. The override can be activated for comfort or setback mode.
  • Page 57 Service parameter(s) 147 147 Acceptable temperature deviation below desired flow temperature (ΔT1 ALARM Circuit Setting range Factory setting (I) / (II) OFF / 1 ... 30 K (OFF) / (OFF) The alarm is activated if the actual flow temperature drops too much below the desired flow temperature.
  • Page 58 Service parameter(s) 148 148 Acceptable temperature deviation above the desired flow temperature (ΔT2 ALARM Circuit Setting range Factory setting (I) / (II) 1 ... 30 K (5) / (5) K The alarm is activated if the actual flow temperature rises too much above the desired flow temperature.
  • Page 59 Service parameter(s) 149 149 Time interval Δt before activation ALARM of alarm function Circuit Setting range Factory setting (I) / (II) 1 ... 99 min. (10) / (10) min. If an alarm condition from either line 147 or 148 is present for a longer time than the time interval Δt , the alarm function is ALARM...
  • Page 60 Service parameter(s) 174-198 174 Motor protection Circuit Setting range Factory setting (I) / (II) OFF / 10 ... 59 min. (OFF) / (OFF) Prevents the controller from unstable temperature control (and resulting actuator oscillations). This can occur when there is no DHW tapping, i.e.
  • Page 61 Service parameter(s) 199 199 Master / slave address Circuit Setting range Factory setting 0 ... 9, 15 The setting is relevant when more controllers are working in the same ECL Comfort system (connected via the system device bus (ECL Comfort BUS)). The slave receives information about the outdoor temperature (S1), system time, and signal for DHW demand in the master.

  • Page 62: Copying With The Ecl Card

    Copying with the ECL Card Check the ECL Card and the software generations (see following example). Insert the ECL Card with the yellow side facing you. Go to line 8 (is not displayed), which is the first line below line 7. Application type Software version,...
  • Page 63 Copy personal settings to additional controller(s) in identical systems Ensure that the other controller(s) use(s) the same ECL Card type. (If this is not the case, please read section 15). Insert the ECL Card, which contains the personal settings, with the yellow side facing you.

  • Page 64: Comfort Temperature

    Definitions Air duct temperature Temperature measured in the air duct where the temperature is to be controlled. Balance temperature This setpoint is the basis for the flow / air duct temperature. The balance temperature can be adjusted by the room temperature, the compensation temperature and the return temperature.

  • Page 65: Room Temperature

    Humidity, relative This value (stated in %) refers to the indoor moisture content compared to the max. moisture content. The relative humidity is measured by the ECA 62 / 63 and is used for the calculation of the dew point temperature. Limitation temperature Temperature that influences the desired flow / balance temperature.
  • Page 66 Switch the power off and on again to see the system type and the software generation of the controller. Order a replacement from your Danfoss representative. Insert the new ECL Card with the yellow side facing you and make sure that you copy your personal settings from the controller to the ECL Card.
  • Page 67 How to make an extra comfort period in the schedule? You can make an additional comfort period by pushing the shift and + buttons simultaneously for 2 seconds. See section 4. How to remove a comfort period in the schedule? You can remove a comfort period by pushing the shift and - buttons simultaneously for 2 seconds.
  • Page 68 Advantages of the ECL Card Save your personal settings to the ECL Card Go to line 9 (is not displayed), which is the second line below line 7. Card Controller Copying direction Accept to copy personal settings from the controller to the ECL Card. The controller will return to display line C when the copying is completed.
  • Page 69 Restore ECL Card data After establishing your favorite temperatures, comfort periods etc., and after copying these to the ECL Card, you can set alternative settings. Insert the ECL Card and make the temporary settings, e.g. for holidays, but do not copy these. To restore your favorite settings, copy these from the ECL Card to the controller.
  • Page 70 Set your personal schedule Monitor the current schedules Select between lines 1-7 (Monday, Tuesday ..Sunday) to see your individual schedules. Changeover time Line Circuit Time line Periods with comfort temp. are shown as black bars Change the schedules Select appropriate day. The changeover point blinks Adjust the first blinking changeover point, if required.
  • Page 71 Add an extra comfort period Push the shift and + button simultaneously for 2 seconds. The new period appears Adjust the new period. Remove a comfort period Select the period to be removed (blinking changeover point) Push shift and - buttons simultaneously for 2 seconds.

  • Page 72: Select Circuit Mode

    Select circuit mode During scheduled operation (clock), the state indicator (a white arrow) will show you the control mode of the selected circuit. The white arrow will blink when this is a heating circuit and it is in the optimizing period. The mode can be set differently for each circuit by means of the function selector.

  • Page 73: Set Your Room And Dhw Charging Temperature

    Set your room and DHW charging temperature Go to display C. Circuit I: Setting the desired room temperature Desired room Desired room temp. in temp. in comfort mode setback mode Select the constant comfort mode. Set the desired room temperature for the comfort mode.
  • Page 74 Choose your favorite display (circuit I) Choose the display - A, B, or C - for daily operations. Room temperature - display A Room temp. Line Circuit Outdoor Desired room temp. temp. The display will show the room temperature if a room temperature sensor, a room panel or a remote control is installed.
  • Page 75 Choose your favorite display (circuit II) Choose the display - A, B, or C - for daily operations. DHW temperature - display A Upper tank temp. (S6) Line Circuit Desired charging temp. (S3) System information - display B State of controlled units Line Circuit Today’s schedule - display C...
  • Page 76 Schedule, DHW circulation pump (P3) Choose the schedule of the circulation pump by pushing the button until there is no circuit indication (display / lights). Go to display C. Schedule of the circulation pump (P3) - display C Start / end time Line Circulation pump schedule There is one common schedule for all days of the week.
  • Page 77 Save energy - save money - improve your comfort temperature The ECL Comfort controller is designed by Danfoss for the automatic temperature control of heating, hot-water, ventilation and cooling systems. Some of the advantages of the ECL Comfort controller system are: •...

  • Page 78: Set Your Personal Schedule

    Table of Contents Daily use Section Choose your favorite display Select circuit mode Set your room and DHW charging temperature Set your personal schedule Advantages of the ECL Card Hot points Definitions The documentation for the ECL Comfort controller is composed of numbered sections.

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