Danfoss ECL 2000 User Manual

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User’s Guide

ECL 2000

11-99 EY.65.H4.02

User’s Guide ECL 2000

Danfoss A/S EY.65.H4.02

ECL 2000

EY.65.H4.02

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed. All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

This manual replaces the ECL 2000 User’s Guide of April 1999.

Danfoss A/S ID: EY.65.H4.02 DK-6430 Nordborg Date: November 1999 Denmark Phone: +45 74 88 22 22

Contents

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iii

TABLE OF CONTENTS

1. INTRODUCTION 1

1.1 What Is In This Guide? 1

1.2 Getting Started With the ECL 2000 1

2. INTRODUCING THE ECL 2000 3

2.1 What is the ECL 2000? 3

2.2 Operating Modes 3

2.3 Circuit Functions 4

2.4 Time Programming 4

2.5 Other Functions 4

3. OPERATING THE ECL 2000 5

3.1 The Front Panel 5

3.2 Front Panel Push-buttons 6

3.3 Display Icons 7

4. DAY-TO-DAY OPERATION 9

4.1 About This Chapter 9

4.2 System Overview 10

4.3 Selecting a Circuit. Viewing Circuit Status 12

4.4 Changing Comfort and Night Setback Temperature Settings 14

4.5 Changing the Operating Mode 15

5. TIME PROGRAMMING 16

5.1 Extending the Comfort or Night Setback Period 16

5.2 Setting the 7-Day Plan 17

5.3 Setting the Holiday Plan 18

6. ENTERING THE ACCESS CODE 20

7. WEATHER COMPENSATION CURVES 21

7.1 Adjusting the Flow Temperature Curve 22

7.2 Adjusting the Return Temperature Curve 23

8. CONFIGURING THE ECL 2000 25

8.1 Starting the ECL 2000 for the First Time 25

8.2 ECL 2000 Types 25

8.3 Selecting an Application 26

8.4 Configuring Inputs and Outputs 27

8.4.1 Operating Configuration Pictures 27

8.4.2 Sensor Inputs 30

8.4.3 LON Inputs 32

8.4.4 Relay Output 33

8.5 Overview of ECL 2000 Applications 34

9. MANUAL OVERRIDE 36

Contents

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10. SERVICE SETTINGS 38

10.1 Operating Service Menus 39

10.2 Heat Circuit Functions 41

10.2.1 Building Settings 41 Optimizer 42

10.2.2 Pump/Valve Settings 45

10.2.3 PI Constant Settings 47

10.2.4 Limiter 48

10.3 Hot-water Circuit Functions 51

10.3.1 Hot Water Settings 52

10.3.2 Pump/Valve Settings 56

10.3.3 PI Constant Settings 58

10.3.4 Limiter 59

10.4 Common Functions 62

10.4.1 Set Clock 64

10.4.2 Alarm Status 65

10.4.3 Alarm Setup 66

10.4.4 Log Today, Log Yesterday 67

10.4.5 Override 68

10.4.6 Communication 70

10.4.7 Sensors 71

10.4.8 Degree Days 72

10.4.9 Access Code 72

10.4.10 Energy Consumption 73

10.4.11 Language 74

10.4.12 Version 74

APPENDIX A. DISPLAY CHARTS 75

A.1 Setting the Operating Mode 75 A.2 System Overview. Selecting a Circuit. Viewing Circuit Status 76 A.3 Time Programming 77 A.4 Weather Compensation Curves 78 A.5 Configuring the ECL 2000 79 A.6 Manual Override 80

APPENDIX B. SERVICE MENUS 81

B.1 Heat Circuit Menus 81 B.2 Hot-Water Service Menus 82 B.3 Common Function Menus 83

APPENDIX C. LOG DISPLAYS 87

GLOSSARY 89

REFERENCES 93

INDEX 95

Introduction

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1. INTRODUCTION

1.1 What Is In This Guide?

This Guide is for the ECL 2000 district heating temperature controller. The purpose of the Guide is to describe the functionality of the ECL 2000 and to enable users to operate the controller from the front panel.

Chapter 2-7 provide information regarding the day-to-day usage of the controller. Chapter 8-10 provide information intended for project and service engineers, for example about configuring the ECL 2000 and using service menus to modify the setup of the controller. Appendix A contains a number of charts providing an overview of

the ECL 2000’s display pictures. Appendix B provides a similar listing of the ECL 2000’s service menus. Appendix C provides a list of the data displayed in the ECL 2000’s Log pictures. At the end of the Guide, you find a glossary, a list of references and an index.

1.2 Getting Started With the ECL 2000

Instructions for installing the ECL 2000 are provided in the ECL 2000 Installation Guide (ref. [2]). After the controller has been installed, it must be configured. This step consists of selecting an application (i.e. a system type) and, if the selected application allows this, configuring inputs and outputs. Instructions for this start on page 25 of this Guide.

Introduction

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Introducing the ECL 2000

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2. INTRODUCING THE ECL 2000

2.1 What is the ECL 2000?

The ECL 2000 is a micro-processor based controller used for temperature control and regulation in district heating systems and for mixing control in boiler systems.

The controller can be used for weather compensation and control in the following types of systems:

• Two parallel district heating circuits

• Two heat circuits and one hot-water circuit

• Two separate weather compensated heat circuits

• Two heat circuits combined with hot-water tank control.

Two types of ECL 2000 are available with different input/output configurations. ECL 2000 Type 1 is supplied with 14 pre-programmed applications (i.e. 14 standard

system setups). Type 2 has 17 pre-programmed applications. The ECL 2000’s built-in applications cover a wide variety of commonly used central heating configurations.

See page 25 for further information.

2.2 Operating Modes

The controller can operate in 4 different modes:

• Automatic

• Comfort

• Night setback

• Stand-by.

In Automatic mode, the controller alternates between two temperature setpoints: comfort and night setback. The flow temperature of a heat circuit and the hot-water temperature are kept at either comfort or night setback temperature, according to a userdefined 7-day plan.

In Comfort mode, flow and hot-water temperatures are maintained at daytime level.

In Night setback mode, the plant is maintained at night setback temperature, which is normally lower than the comfort temperature.

Note:

The controller can be in night setback mode even during the daytime, for example over the week-end.

In Stand-by mode, heating is off, but the plant is frost-protected at 6 °C.

Introducing the ECL 2000

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2.3 Circuit Functions

Heat circuit functionality includes weather compensation of flow temperature according to outdoor temperature, sun intensity and wind velocity, outdoor temperature dependant return temperature limiting, PI control of valve motors, as well as an optimizer facility that will save energy by calculating optimum pre-heat and cooling times for the plant. If a room temperature sensor is fitted, the optimizer is adaptive.

Hot-water circuit facilities include PI control of valve motors, return temperature limiting and an anti-bacteria function.

The ECL 2000 has a built-in timer function with a year clock, which can be used to switch on and off an external device according to a 7-day, 24-hour program.

2.4 Time Programming

The ECL 2000’s time programming facility lets you set up an individual 7-day, 24hour program for each of the circuits being controlled.

The ‘party function’ allows the ECL 2000 to override the 24-hour program and keep one or more circuits at comfort temperature for a prolonged period of time, for example until later in the evening than normally. The economy function lets the ECL 2000 keep the plant at night setback temperature longer than normally.

You can also pre-program a holiday period during which the controller will follow a different 24-hour schedule than under normal conditions.

2.5 Other Functions

The controller includes a Manual Override facility that disables all automatic control, allowing for manual control of circuit components (pumps and valve motors).

The controller’s alarm system lets you define conditions that will cause an alarm. You can monitor the alarm status by displaying the controller’s alarm log and one relay output can be defined as an alarm output.

The ECL 2000 also includes facilities for logging measured data and displaying this graphically, as well as for calculating degree days.

LON (Local Operating Network) communication is available as an option. This facility enables the ECL 2000 to communicate via LON with other ECL 2000 controllers and devices such as heatmeters.

Operating the ECL 2000

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3. OPERATING THE ECL 2000

A few basic principles determine the way the ECL 2000 is operated – these principles apply to all ECL 2000 functions. This section gives a brief introduction to these principles.

Detailed descriptions of the various ECL 2000 functions are given from page 9. For an overview of navigating through ECL 2000 pictures, see the charts in Appendix A, page 75.

3.1 The Front Panel

Select circuit 7-day plan and holiday

plan

Weather compensation curves

Service settings

LCD display

Operating mode

Go to next picture/ Move cursor

Change setting

Manual override Application

Figure 1. ECL 2000 front panel push buttons

Operating the ECL 2000

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3.2 Front Panel Push-buttons

The following push-buttons operate independently of all other functions:

Push-button Function

Circuit

Selects a circuit, that is, a heat circuit, a hot-water circuit or a timer. When you press the push-button, the display switches from the System

Overview picture to the picture of the first circuit, to the next circuit, etc. and finally back to the System Overview again.

See page 12.

Mode

Changes the operating mode of the controller. The ECL 2000 can operate in 4 different modes: Automatic, Comfort, Night setback and Standby.

See page 15.

The function buttons activate 5 main functions: Setting time programs, adjusting weather compensation curves, changing service settings, operating the plant manually and selecting an application. These are:

Push-button Function

7-day plan and holiday plan

Lets you modify the controller’s 7-day plan, set up a holiday period and a 24-hour program to follow during the holiday period.

See page 17.

Weather compensation curves

Allows you to modify the weather compensation curves used by the ECL 2000 to control flow and return temperatures in a heat circuit.

See page 21.

Service settings

Activates the ECL 2000’s service menus. The service menus allow you to change settings for the circuits controlled by the ECL 2000 and to monitor actual values of plant variables.

See page 38.

Manual override

Enables manual operation of individual components in the plant. See page 36.

Application

Lets you select an application, which is a standard system setup See page 26.

Operating the ECL 2000

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Exit The general principle of the ECL 2000 is as follows: Once you have pressed one of

these push-buttons and activated the corresponding function, you exit the function by

pressing the same button once more. There are minor exceptions to this rule – these are indicated in the appropriate sections of this User’s Guide. When you exit a function, any modifications you have performed are saved.

The remaining front panel buttons perform the functions outlined in the table below:

Push-button Function

Change the display to the next/previous picture in a series, for example in the System Overview or the Circuit Status.

Move the cursor within a picture.

Increases the value of a setting, for example a temperature setpoint. Reduces the value of a setting.

Note:

Before being allowed to modify a setting, you may be prompted to enter an access code. See page 20 for instructions.

3.3 Display Icons

The ECL 2000’s displays are provided with a number of icons to help you navigate through the pictures. The following icons appear in the upper left corner of the display:

Icon Indicates

Data for heat circuit no. 1 is being displayed.

Data for heat circuit no. 2 is being displayed.

Data for the hot-water circuit is being displayed.

Data for the timer function is being displayed.

Settings concerning al l circuits: Common Functions in service menus.

Icon

Operating the ECL 2000

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Icons displayed on the right-hand side of the display:

Icon Indicates

Time programming is active – was pressed.

Curve adjusting is active – was pressed.

Service menus are active – was pressed.

Manual operation is active – was pressed.

System setup is active – was pressed.

Press to access next picture. Press to access previous picture. Picture no. 2 of 5 is currently displayed. Press and to access

other pictures. Press to display more settings. Press to display more settings.

Icon

Day-to-Day Operation

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4. DAY-TO-DAY OPERATION

4.1 About This Chapter

This chapter is intended for the daily user of the ECL 2000. It describes the functions which are used during normal day-to-day operation of the ECL 2000. Instructions are provided for:

• Getting an overview of the plant and looking at individual circuits in the system

• Setting the ECL 2000’s operating mode

• Viewing status information

• Changing temperature setpoints.

Day-to-Day Operation

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4.2 System Overview

The System Overview is the ECL 2000’s main picture. When the ECL 2000 is powered on, the System Overview appears in the display after the self-test has been completed

. During normal operation, whenever no front panel push-button is operated for a 10 minute period, the ECL 2000 automatically reverts to the System Overview.

System Overview

Actual outdoor temperature

Actual hot-water temperature Room temperature. If the plant has more than one heat

circuit, the room temperature is displayed individually for each heat circuit.

24-hour program for all circuits. This 24-hour program indicates that heat circuit 1 should be maintained at comfort temperature from 06:00 to 12:00 and from 16:00 to 23:00. Outside these periods, the circuit is maintained at night setback temperature. The hot water is kept at comfort temperature constantly.

The System Overview shows the total setup of the plant. This means that the picture looks slightly different, according to the application that was selected when the controller was configured.

Timer

The heating system in this example consists of one heat circuit and one hot-water circuit. In addition to these, the system also includes a timer, which you can see from third line of the 24-hour program. When this function is enabled, a set of outputs on the controller is used to switch on and off some external device, that is, the ECL 2000 is used as a timer to control this other device. See also page 33.

Display contrast

If the temperature in the room where the ECL 2000 is installed is very high, this may affect the contrast of the controller’s LCD display.

1. In the System Overview picture, use

and to adjust the display

contrast.

See page 25 for information on what to do when powering on the ECL 2000 for the first time.

Day-to-Day Operation

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System status

To view status information for the entire plant:

1. From the System Overview, use

and

to display further information.

See illustration below.

Depending on the selected application and the sensors connected to the system, the following status information can be available:

Day temperature

This picture displays the highest and lowest outdoor temperature measured since midnight. The

symbol indicates that the actual temperature is rising. A indicates

that the temperature is falling.

Degree days

The number of degree days calculated since the first day of the current month and the number of degree days calculated since the change of season.

The following status information is only available when the appropriate sensors are connected to the ECL 2000:

Sun intensity

Actual value of sun intensity.

Wind velocity

Actual wind velocity.

Water Flow

Actual value of water flow.

Energy

Actual value of energy consumption.

Other

Actual reading from a user-defined sensor connected to the controller.

See page 27 for information on configuring the ECL 2000’s sensor inputs and LON inputs

By default, the season for degree day calculation starts on 1. June

Sensor S8 and S9

Sensor S10 and S11 (ECL 2000 Type 2 only)

Sensor L1 and L2 (LON option installed)

Sensor L3 and L4 (LON option installed)

Day-to-Day Operation

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4.3 Selecting a Circuit. Viewing Circuit Status

This section tells you how to select an individual circuit in the plant and display status data for this circuit.

In the System Overview picture or in one of the System Status pictures (see page 10-11):

1. Press

to display the next circuit in the plant.

Comfort temperature setpoint Night setback temperature setpoint Operating mode of the circuit: Automatic, Comfort,

Night setback or Stand-by. See page 3 24-hour program

Comfort temperature setpoint Night setback temperature setpoint Operating mode of the circuit: Automatic, Comfort,

Night setback or Stand-by 24-hour program

Current status of timer

Operating mode of the timer 24-hour program

To return to the System Overview:

2. Press

again.

Whenever you wish to change the setup or view data for one circuit separately, you

start by selecting the circuit. This function is active in most of the ECL 2000’s pictures. For example, while setting the operating mode for one circuit, you can switch

to the next circuit by pressing

Several of the ECL 2000’s built-in applications include two heat circuits. When a second heat circuit is part of the application, this circuit has a picture associated with it that is very similar to the picture for Heat circuit 1.

Day-to-Day Operation

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View Status

To view status information for one circuit:

1. In the System Overview picture, press

until you see the picture of the

appropriate circuit.

2. Press

to display status information for the circuit, once more to display

today’s log, and again to display yesterday’s log.

The status of individual components of the selected circuit. The symbols used in the picture are explained below.

Today’s log. The fully drawn curve shows variations in flow temperature. The dotted curve indicates the return temperature.

Yesterday’s log. The fully drawn curve shows the flow temperature, the dotted curve shows the return temperature.

Temperature readings

The following temperature information is available in Status pictures, depending on the selected application and the type of circuit:

Actual (49 °C) and reference flow temperature (calculated, 48 °C), return temperature (24 °C) for a radiator heating system.

Primary return temperature and secondary flow temperature for a circuit that includes a heat exchanger.

Charging (50 °C) and return temperature (23 °C), upper tank temperature (48 °C) and lower tank temperature (23 °C) for a circuit that includes a hot-water storage tank.

Flow temperature (50/40 °C) measured by two sensors in a circuit that includes a hot-water storage tank.

Pump and valve status

The following pump and valve information can be available in Status pictures, depending on the application and the type of circuit.

Pump status: Pump no. 2 is currently off while pump no. 3 is operating.

Valve status: Valve 24 % open.

Valve motor status: Valve moving in the open-

ing/closing direction, respectively. Valve motor status: Valve is not moving.

See Appendix C, page 87 for a complete list of the data displayed in Log pictures

A blank reading indicates that the sensor is not connected or that there is a sensor error

Day-to-Day Operation

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4.4 Changing Comfort and Night Setback Temperature Settings

This page tells you how to change the comfort and night setback temperature settings for a heat circuit or a hot-water service.

1. In the System Overview picture, press to dis-

play the picture of the desired circuit.

In the Circuit picture in this example, the comfort temperature is highlighted, indicating that this setting is selected.

2. Use and to select the temperature setting

that should be changed – the comfort temperature or the night setback temperature.

3. Use and to change the temperature setting.

Day-to-Day Operation

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4.5 Changing the Operating Mode

Changing the operating mode for all circuits

The ECL 2000 can operate in 4 modes. Use the Mode push-button on the front panel

to change the controller’s operating mode. Above the Mode push-button, there are 4 LED symbols:

, ,

and

. When you select an operating mode, the symbol corresponding to the selected mode lights up.

Automatic

The controller switches between comfort and night setback temperature as specified in the 7-day plan.

Page 17 tells you how to modify the plan.

Comfort

The controller maintains comfort temperature for all circuits.

Night setback

The controller maintains night setback temperature constantly in all circuits.

Stand-by

Temperature control is stopped but the system is frostprotected at 6 °C.

By pressing the Mode button once more, all three circuits are set in Automatic mode.

Changing the operating mode for one circuit

Alternatively, you can change the operating mode for each of the system’s circuits individually:

1. In the System Overview, press

to select the circuit you wish to work

with.

2. Use the Mode push-button to select the desired operating mode.

Note:

If the system includes a timer circuit, this circuit will be set in Night Setback mode when Stand-by is selected, that is, the timer output will be constantly off.

Time Programming

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5. TIME PROGRAMMING

5.1 Extending the Comfort or Night Setback Period

The ECL 2000 offers two functions allowing you to override the controller’s 24-hour program. The party function extends the comfort temperature period while the economy function extends the night setback period.

You can extend the comfort or night setback period for the whole plant or separately for one circuit. To change the setting for the whole plant:

1. Start in the System Overview picture.

2. To extend the comfort period, press the Mode

push-button until the

symbol lights up.

Or:

3. To extend the night setback period, press Mode

until the

symbol lights up.

The example on this page illustrates how the comfort period is extended.

4. Press to set the stopping time and date, i.e. the

time when the controller will revert to the normal 24-hour program.

5. Use

and to adjust the stopping time in 30-

minute steps.

The stopping date is adjusted automatically if the stopping time exceeds midnight.

When you use this function to extend the comfort or night setback period, the

stays lit, while the is flashing to indicate that the controller will automatically

revert to its normal 24-hour program at the specified stopping time.

Note:

When the party function is active, the controller maintains comfort temperature from the current time until the specified stopping time. Any night setback periods programmed in this interval are disregarded. Likewise, the economy function keeps the system at night setback temperature constantly until the specified stopping time.

To extend the comfort or night setback period for a single circuit:

1. Select the circuit by pressing

, and proceed from step 2. above.

Time Programming

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5.2 Setting the 7-Day Plan

The ECL 2000’s 7-day plan is active when the controller is in Automatic mode (see page 15). The 7-day plan determines when comfort temperature will be maintained in the system, and when night setback temperature will be maintained.

1. In the System Overview picture, press to

display the picture of the circuit.

2. Press

to display the current 7-day plan for the

selected circuit.

In the 7-day plan, the numbers 1-7 indicate the days from Monday to Sunday. A thin time line indicates when night setback temperature should be maintained, and a thick line indicates when comfort temperature should be maintained.

Now select a day or group of days for which the 24-hour program will be changed:

3. Press until the name of the first day appears

(Monday in this example). Note that the day’s number is replaced by a cursor (

4. If you wish to select a group of days (for example

Monday through Friday), use

to add the cur-

rently selected day to the group. Use

to remove

the selected day from the group.

When a group of days is selected, the numbers of the days are highlighted while the currently selected day is indicated by the

cursor.

Now set the 24-hour program for the selected day or group of days:

5. Press . A cursor appears in the time line that represents the 24-

hour program for the selected day(s). The time of day corresponding to the cursor position is displayed.

6. Use

and to move the cursor to the time of

day at which you wish to modify the plan.

If the plan includes changes from comfort to night setback temperature and vice versa, the

push-button moves the cursor forward to the next change of mode.

always moves the cursor backwards in 15-minute steps.

7. Press

to select comfort temperature for the currently selected 15-

minute time interval. Press

to select night setback temperature.

Exit

To exit the 7-day plan:

1. Press

Time Programming

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5.3 Setting the Holiday Plan

The ECL 2000’s Holiday Plan enables you to set up a special 24-hour program which will be active for a limited number of days (the holiday period) which you select from a calendar.

You set up the holiday plan for one circuit at a time:

, ,

1. In the System Overview picture, press until the

appropriate circuit picture appears.

2. Press

to display the 7-day plan. Details of this

picture are given on page 17.

3. Press

to display the Holiday picture.

The first thing to do is to set up the holiday period. First select the month:

4. Press to highlight the name of the month, and

then use

and to change the holiday month.

The year changes automatically when the month changes from Dec to Jan.

Now proceed to select the days of the holiday period:

5. Press or to move the cursor to the first day

of the selected month. The date is replaced by a cursor (

6. Use

, , and to move the cursor to the

first day to be included in the holiday period.

7. Press to add the currently selected day to the

holiday period. The selected days are highlighted. By pressing

, you remove the selected day from

the highlighted period.

The next step is to set up a 24-hour program for the holiday period. But first, you must exit this part of the Holiday Plan facility:

8. Use

and/or to move the cursor back to the first date of the month.

9. Press

to move the cursor back to the name of the month.

10. Press

once more to display the symbol at the top right corner of the dis-

play.

See next page for further instructions.

Time Programming

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After setting up the holiday period, you are now ready to enter the 24-hour program that the controller should follow during this period:

11. In the Holiday picture, press .

The ECL 2000 displays this picture, which allows you to select an operating mode for the holiday. The X indicates the currently selected mode (Stand-by in the example).

12. Use

and

to move the cursor between Stand-

by and Automatic.

13. Use and to select or deselect an operating

mode (see page 3 for information about ECL

2000’s operating modes).

When you select Automatic, a time line appears at the bottom of the display.

14. Press to move the cursor to the time line.

The time of day corresponding to the cursor position is displayed.

Now you can set the 24-hour program for the holiday period in the same way as you set a 24-hour program for

the normal 7-day plan:

and move the cursor,

selects comfort temperature (thick time line) and selects night setback temperature (thin line). See page 17 for more detailed instructions.

Exit

To exit the holiday plan facility:

1. Press

until the symbol appears at the top right corner.

2. Press

Entering the Access Code

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6. ENTERING THE ACCESS CODE

The ECL 2000 always allows the user to display any parameter or setting. However, the controller can be set up to prompt the user to enter an access code before he or she is allowed to modify a setting. The controller has 2 levels of access codes:

• The service level code gives authorization to modify all settings of the ECL 2000.

This code is required to select a different application (see page 26), to configure inputs and outputs (see page 27) and to modify the controller’s service settings

(see chapter 10, page 38).

• By entering the user level code, you are authorized to modify all settings that do

not require the service level code. These settings are the ones that may need changing during normal day-to-day operation, for example a temperature setpoint or the 7-day plan.

See page 72 for instructions on activating and modifying the access code.

When you attempt to modify a setting, a pop-up similar to the one shown below appears:

1. Use and to move the cursor from one digit

to another.

2. Use

and to change the digits.

3. When you have entered the access code, press

The Access Code pop-up disappears. If you entered the correct access code, you can now complete the operation you were about to perform.

When no front panel push-button has been operated for a 10 minute period, you must enter the access code again before being allowed to modify any settings.

Weather Compens at i on Curves

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7. WEATHER COMPENSATION CURVES

Weather compensation means that the ECL 2000 regulates the heat circuit temperature in accordance with the outdoor temperature.

Weather compensation is controlled by two user-definable curves:

• A flow temperature curve

• A return temperature curve.

Flow temperature curve

Outdoor temperature

The flow temperature curve shows the reference flow temperature in the heat circuit as a function of the outdoor temperature. By modifying this curve, you determine what the flow temperature should be for various values of the outdoor temperature.

At low outdoor temperatures, you will normally want a higher flow temperature, as shown in the curve to the left.

You can set up maximum and minimum values for the reference flow temperature. This is explained on page 22.

Return temperature curve

Outdoor temperature

The return temperature curve controls return temperature limiting in accordance with the outdoor temperature. The curve shows the acceptable return temperature as a function of the outdoor temperature.

Normally, a low outdoor temperature means that a higher return temperature will be allowed. This is also the case with the curve shown to the left.

For further information on return temperature limiting, see page 47 and 48 (heat circuit) and page 58 and 59 (hot-water circuit).

The following pages provide instructions for setting up the curves.

Note:

The setting of the flow and return temperature curve is essential for the functioning of

the ECL 2000. Therefore, it is important to check that the resulting curve is reasonable in relation to the controlled system.

Reference flow temperature

Return temperature limit

Weather Compens at i on Curves

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7.1 Adjusting the Flow Temperature Curve

The weather compensation curve for the flow temperature can be modified by setting: A maximum and minimum value, 2 curve endpoints and, in addition to these, 3 break points. Together, these parameters define the shape of the curve.

1. Press to select the desired heat circuit.

2. Press

to display the flow temperature curve.

Note:

If you press

while a hot-water circuit is selected, the ECL 2000 displays a pop-up

informing you that this facility is not available for hot-water circuits.

Moving curve points

3. Press to display the currently defined curve

points.

4. Use

and to move the cursor to the point you

wish to modify.

The flow temperature (y co-ordinate) of the selected point is highlighted to indicate that it can be modified.

5. Use

and to select either the flow temperature (y co-ordinate) or the outdoor temperature (x co-ordinate) of the point.

6. Use

and to adjust the selected value.

Note:

If two curve points are placed in the same position, one point is automatically removed.

Setting maximum and minimum values

7. Ensure that the outdoor temperature of a point is

selected (x co-ordinate value highlighted), and press to display maximum and minimum val-

ues.

8. Use

and to select either the maximum or minimum setting.

9. Use

and to adjust the selected setting.

Adding and removing curve points

10. Ensure that the curve’s minimum value is selected,

and press

to display break points.

The checked box indicates the number of break points that are currently active (in this example, 1 break point is active – in addition to the two curve endpoints).

11. Use

to add a breakpoint or to remove one.

Weather Compens at i on Curves

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7.2 Adjusting the Return Temperature Curve

You modify the return temperature curve in the same way as when adjusting the flow temperature curve (see page 22). However, for the return temperature curve, you can only set two curve points. The curve can have no further break points.

To display the return temperature curve:

1. In the Flow Temperature Curve picture, press

Moving curve points

2. Press to display the curve points.

3. Use

and to move the cursor to the point you

wish to modify.

The y co-ordinate value (the return temperature) of the selected point is highlighted to indicate that it can be modified.

4. Use

and to select either the y or x co-

ordinate (outdoor temperature) of the point.

5. Use

and to adjust the selected value.

Setting maximum and minimum values

6. Ensure that the x co-ordinate of a point is selected

(x co-ordinate value highlighted), and press

display maximum and minimum values.

7. Use

and to select either the maximum or

minimum setting.

8. Use

and to adjust the selected setting.

Exit

To exit temperature curve editing:

1. Press

Weather Compens at i on Curves

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Configuring the ECL 2000

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8. CONFIGURING THE ECL 2000

This section tells you how to begin using the ECL 2000 after it has been installed. The ECL 2000 Installation Guide (ref. [2]) provides full details about the installation and configuration of the ECL 2000.

8.1 Starting the ECL 2000 for the First Time

When the ECL 2000 is powered on, the controller displays the Danfoss logo.

The ECL 2000 is supplied with up to 17 different pre-programmed applications (see below), accommodating a wide variety of plant configurations. Before the ECL 2000 is operational, you must select the application that matches your plant best. Once you have selected an application, you have the possibility of customizing one or more system parameters.

If the ECL 2000 has already been programmed with a pre-selected application, the System Overview replaces the logo picture after a moment.

If no application is selected, the ECL 2000 automatically displays the Application 1 picture (see page 26), allowing you to select an application. See instructions on the following pages.

8.2 ECL 2000 Types

Two different types of ECL 2000 are available. The table below summarizes the differences between the two types (see also page 89).

Type 1 Type 2

Inputs

Pt 1000 7 7 Pt 1000, 0-10 V, pulse

or digital

Outputs

Relay (pump control ) 3 3 3-point control (motor

valve control)

2 –

0-10 V (motor valve control)

–3

Configuring the ECL 2000

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Power supply

230 V AC 24 V AC

24 V AC

Pre-programmed applications

1 – 14 1 – 17

8.3 Selecting an Application

This section explains how to select one of the ECL 2000’s pre-programmed applications. For an overview of available applications, see page 34.

To select an application:

1. Press the front panel

button.

If no application has been selected yet, the ECL 2000 displays the picture Application 1. However, if an application has already been selected, the picture of this application is displayed. In this case, the picture’s title is inverted, i.e. displayed in light characters on a dark background.

2. Use and

to browse through available appli-

cations.

Each application picture shows a diagram of the system configuration. Refer to the ECL 2000 Installation Guide (ref. [2]) for system diagrams offering additional detail.

When you have found the application you need:

3. Keep the

button depressed for a few seconds.

While the

button is active, the picture’s title (in the example “APPLICATION 10”) is inverted, one character at a time, until the whole title is displayed in light characters on a dark background.

When all the characters of the title are inverted, this indicates that the controller is configured to use this application.

The

symbol appears briefly, indicating that you can access further configuration pictures. After a moment, the controller automatically displays the first configuration picture (see next page).

See page 34 for an overview of ECL 2000 applications

Configuring the ECL 2000

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8.4 Configuring I nputs and Outputs

8.4.1 Operating Configuration Pictures

Depending on the type of ECL 2000 you are working with and the application you have selected, it may be possible to customize one or more sensor inputs (S8, S9, S10 and S11) and one relay output (P3). Furthermore, if the ECL 2000 LON option is installed, you can configure four LON inputs (L1, L2, L3 and L4). This section explains how to operate the function. The following sections give some details about possible settings. Further information is available in the ECL 2000 Installation Guide (ref. [2]).

When you have selected an application, you are ready to configure inputs and outputs:

1. In the Application picture (see facing page), press

to access Input

settings.

Configuring Sensor Inputs

The first pictures in the series allow you to configure the ECL 2000’s sensor inputs.

2. Use to select the different parameters.

The arrow symbol at the top right corner of the display disappears, indicating that you can now select and set the individual parameters of the picture.

3. Use

to modify the parameters Sensor, Circuit and Type.

4. Use

and to modify the remaining parameters.

Section 8.4.2 starting on page 30 provides an overview of the possible settings of sensor input parameters.

Note:

The sensor inputs S10 and S11 and the corresponding configuration pictures are only available for the ECL 2000 Type 2.

Configuring the ECL 2000

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To exit a configuration picture:

5. Press

until the arrow symbol at the top right corner reappears.

6. Use

or to access other configuration pictures.

See also page 29.

Configuring LON Inputs

A maximum of 4 sensors can be configured as input from the LON network. To access LON configuration pictures:

1. Press

in the last sensor input picture (Input S9 for the ECL 2000 Type

1 and Input S11 for the Type 2).

2. Use

to select the different parameters.

3. Use

to modify the parameters Sensor, Circuit and Unit.

4. Use

and to modify the parameter Poll.

Section 8.4.3 starting on page 32 gives some details about the possible settings of the LON inputs. See also section 10.4.6 on page 70 for information on the LON address.

Configuring the Relay Output

Some ECL 2000 applications allow you to change the function of the relay output P3. When this is possible, you can access the Output P3 picture by pressing

in either the last sensor picture (Input S9 or Input S11) or, if the LON option is installed, in the Input L4 picture. This is illustrated below. Section 8.4.3 starting on page 32 gives details about the possible settings of P3.

1. Use to select the parameter Function.

2. Use

to modify the setting.

Configuring the ECL 2000

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Save and Exit

To exit the configuration facility and save the selected settings:

1. Press

until the arrow symbol appears at the top right corner of the dis-

play.

2. Press

again.

If you have selected a different application, or if one of the parameters Sensor, Cir- cuit or Type has been changed, the ECL 2000 is reset, which takes a few moments. Meanwhile, the Danfoss logo is shown in the display.

Configuring the ECL 2000

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8.4.2 Sensor Inputs

This section explains the setup of the ECL 2000’s sensor inputs. See the ECL 2000 Installation Guide (ref. [2]) for further information.

Note:

It is not possible to set up two sensors with the same function (Sensor) in one circuit (Circuit). For example, you cannot have two room temperature sensors both affecting circuit 1. The ECL 2000 automatically excludes this and similar illegal settings.

Furthermore, not all combinations of settings (e.g. Sensor and Type) are allowed. The ECL 2000 keeps track of this and only allows you to select valid settings.

Sensor This setting tells the ECL 2000 what is measured by means of the sensor connected to

this input. The setting can have the following values:

Value Description

Room temp.

Room temperature

Sun intens.

Sun intensity

Wind veloc.

Wind velocity

Flow

Water flow

Energy

Energy measurement

Clock func.

An external timer is connected to the input. Overrides the normal program set up for the circuit. When the timer input is OFF (0), the circuit is in Automatic mode. When the timer input is ON (1), the circuit is in Comfort mode

Other

Universal limiter

None

No function

Circuit This parameter determines which circuit is affected by the sensor.

Value Description

None

No circuits affected

Circuit 1

Heat circuit 1

Circuit 2

Heat circuit 2

Hot water

Hot-water circuit

Circuit 1+2

Circuits 1 and 2

All circuits

All heat and hot-water circuits in the system

Configuring the ECL 2000

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Type This setting indicates what type of sensor is connected. The following sensor types

are supported:

Value Description

Pt 1000

Temperature dependent resistance: 1000

at 0 °C

ESMF

Remote control device with a built-in Pt 1000 room temperature sensor

Pulse

Pulse count

0–10 V

The sensor delivers a voltage in the range 0-10 V

Digital

Digital input

Amplific., Offset Amplification, Offset.

For a 0–10 V sensor, the ECL 2000 must convert the input voltage received from the sensor into the correct value, using the correct unit of measurement. The parameters Amplific. (amplification) and Offset are used to perform this calculation. Their func- tion is illustrated in Figure 2.

Offset

Value [m/s, l/h, ...]

Value = Amplification * Input + Offset

Input signal [V]

Figure 2. Amplification and Offset

Scaling, Interval These parameters are used to convert the number of pulses received from a pulse in-

put into the correct value and unit of measurement. See the ECL 2000 Installation Guide (ref. [2]) for details on these parameters.

Configuring the ECL 2000

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8.4.3 LON Inputs

The parameters of the LON input configuration pictures can assume the values described in the following.

Sensor This setting tells the ECL 2000 what is being measured by means of the LON sensor.

Value Description

Outd. temp.

Outdoor temperature

Note:

When Outd. temp. is selected, the ECL 2000 uses the LON sensor to measure outdoor temperature. Any outdoor temperature sensor connected directly to the ECL 2000 (typically via sensor input S3) is disabled

Flow

Water flow

Wind veloc.

Wind velocity

Energy Energy measurement. When Energy is selected, values for the accumu-

lated energy are automatically collected from the same device

None

The LON input is not used, i.e. no input is taken from the LON network

Circuit This parameter determines which circuit is influenced by the collected data.

Value Description

None

No circuits affected

Circuit 1

Heat circuit 1

Circuit 2

Heat circuit 2

Hot water

Hot-water circuit

Circuit 1+2

Circuits 1 and 2

All circuits

All heat and hot-water circuits in the system

Poll This parameter determines how often the ECL 2000 will poll the LON sensor.

Value Description

X s The number of seconds between sensor polls. For example, if Poll is set

to 25 s, the ECL 2000 reads the actual value from the sensor every 25 seconds

Poll can be set to values in the range 5 – 60 s for all sensor types. After an external device has been polled 3 times without having anwered, this is considered a sensor fault

Configuring the ECL 2000

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Unit The Unit parameter is available when Sensor is set to Flow or to Energy. When Sen-

sor is set to Flow, the Unit parameter can be set as follows:

Value Description

l/h

Water flow is being measured in liter per hour

m3/h

Water flow is being measured in m

per hour

Note:

When the flow unit is set to l/h, there is a risk of an overflow error if the measured water flow exceeds 1024 l/h. This will lead to a blank flow reading on the ECL 2000’s display. See the Technical Manual for the ECL 2000 LON Option (ref.

[4]). When Sensor is set to Energy, the Unit parameter can be set as follows:

Value Description

Energy is being measured in kW. When this setting is active, the accumulated energy is measured in MWh

Energy is being measured in MW. When this setting is active, the accumulated energy is measured in GWh

Note:

When the energy unit is set to kW, there is a risk of an overflow error if the measured energy (power consumption) exceeds 1024 kW. This will lead to a blank energy reading on the ECL 2000’s display. See the Technical Manual for the ECL 2000 LON Option (ref. [4]).

8.4.4 Relay Output

For some applications, you can also customize the ECL 2000’s relay output P3.

Function The relay output parameter Function can be set to the following values:

Value Description

Pump 3

The output controls a pump. This is the default setup for some applications

Timer

When this value is selected, one of the controller’s circuits is dedicated to a timer function. The output is set to ON and OFF in accordance with the 7-day plan for the timer circuit. See also page 10.

Alarm

The relay output is used as an alarm indication, i.e. the output is set to ON and OFF in accordance with the ECL 2000’s Alarm Setup (see page

66).

Configuring the ECL 2000

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8.5 Overview of ECL 2000 Applications

Heat circuit and hot-water circuit with indirect control via heat exchanger.

Heat circuit and hot-water circuit with direct control of storage tank.

Common primary heat exchanger for a heat circuit and a hot-water circuit with indirect control of storage tank.

Common primary heat exchanger for a heat circuit with a mixing valve and a hot-water circuit with indirect control of storage tank.

Heat circuit and hot-water circuit with indirect control of storage tank.

Common primary heat exchanger for a heat circuit and a hot-water circuit with indirect tank charging system.

Common primary heat exchanger for a heat circuit with mixing valve and a hot-water circuit with indirect tank charging system.

Common primary heat exchanger for a heat circuit and a hot-water circuit with mixing valve and indirect tank charging system.

Configuring the ECL 2000

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Two separate heat circuits.

Two separate heat circuits and a hot-water circuit with direct control of storage tank.

One separate heat circuit. In addition to this, a common primary heat exchanger supplying one heat circuit and one hot-water circuit with indirect control.

Two heat circuits with common heat exchanger. One heat circuit has a mixing valve.

Two interdependent heat circuits and a hot-water circuit with direct control of storage tank.

Common primary heat exchanger for one heat circuit with mixing valve, one heat circuit without and a hotwater circuit with indirect control of storage tank.

Two heat circuits with common heat exchanger, where one circuit has a mixing valve. Hot-water circuit with indirect control via heat exchanger.

Note: This application requires ECL 2000 type 2.

Two separate heat circuits. Hot-water circuit with indirect control via heat exchanger.

Note: This application requires ECL 2000 type 2.

Two separate heat circuits. Hot-water circuit with indirect control of storage tank.

Note: This application requires ECL 2000 type 2.

Manual Override

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9. MANUAL OVERRIDE

When the ECL 2000’s Manual Override function is active, you can control system components, circulation pumps and valve motors from the ECL 2000’s front panel.

1. Press to select the circuit that you wish to con-

trol manually.

2. Press

to activate manual control.

The LED above the

button lights up and all four LED’s indicating the controller’s operating mode are switched off. The controller displays a picture showing the pumps and valves of the selected circuit, as well as status information.

Note:

While the Manual Override function is active, automatic control of all circuits in the plant is disabled. Automatic control is disabled, as long as the LED above the

lit. While Manual Override is active, frost-protection of the plant is disabled.

3. Press

and to select the pump or valve you wish to operate (see

facing page).

The text below the selected component is highlighted to indicate the selection.

4. Press

and to operate the device. These buttons work as indicated in

the table below.

Push-button Pump Motor valve

Pump is set toONMotor valve OPENs while button is pressed. After the but-

ton has been kept depressed for about 5 seconds, the valve will move continuously towards the open position until the button is pressed again

Pump is set to OFF

Motor valve CLOSEs while button is pressed. After the button has been kept depressed for about 5 seconds, the valve will move continuously towards the closed position until the button is pressed again

Note:

If a motor valve is moving when

is pressed, it will continue running. You can stop

the valve by pressing

It is not possible to control a timer circuit manually.

Manual Override

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To display today’s and yesterday’s logs for the selected circuit:

1. In the Manual picture, press

to display today’s log and once more to

see yesterday’s log.

The circuit’s last component is selected. The symbol indicates that you can proceed to the next picture (today’s log) by

pressing

Today’s log. The fully drawn curve indicates the flow temperature, the dotted curve shows the return temperature.

Yesterday’s log.

The ECL 2000 keeps logs of the temperature measured by all connected sensors. You can display these logs from the Common Functions service menu. See page 67.

Exit

To exit Manual Override and revert to automatic control of the plant:

3. Press

again.

See Appendix C, page 87 for a complete list of the data displayed in Log pictures

Service Settings

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10. SERVICE SETTINGS

The ECL 2000’s service menus provide facilities for displaying and modifying:

• Heat circuit settings

• Hot-water circuit settings

• Settings concerning the overall operation of the ECL 2000, for example the cur-

rent date and time. These are called Common Functions.

The options that are available in service menus depend on the application that is selected and the setup of the system. This chapter describes all service menu options that can be available in a ECL 2000. Please disregard any explanations of parameters not available in your particular system.

Select menu item/ setting

Next/previous picture

See also the service menu overview in Appendix B. The overview shows all available service pictures and options.

Service Settings

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10.1 Operating Service Menus

Accessing service menus The diagram on the facing page illustrates how the ECL 2000’s service menus are

operated. To access service menus for a heat circuit or a hot-water circuit:

1. Press

to select the desired circuit.

2. Press

to activate the service menu.

The controller displays the service menu for the circuit you selected. In the diagram on the facing page, heat circuit 1 was selected prior to pressing

To access the Common functions service menu directly (see page 62):

1. In the System Overview picture, press

Operating service menus In all service menus,

and are used to select menu items. Selected menu items are highlighted. If, for example, you wish to view and modify pump and motor valve settings:

1. Press to select Pump/valve.

Each menu item has a number of setting pictures associated with it. How many, depends on the selected application (see page 26) and the type of controller you are

working with. You use

and to access these pictures:

2. Press

to access the first Pump/valve setting picture.

The ECL 2000 now displays the first set of parameters for pumps and valves in circuit no. 1. The symbol in the upper right-hand corner of the display indicates the number of pictures available and which one of these is currently displayed. In the diagram, the symbol indicates that there are a total of 3 setting pictures, that the first one of these is

currently displayed and that you can access the next setting picture by pressing

To select a parameter, you use

and . The selected setting is highlighted. To

change the value of the selected parameter:

3. Press

or .

For the currently selected parameter, the line at the bottom of the picture indicates:

Current setting

Previous setting

Maximum limit

Minimum limit

Factory settin g

Figure 3. The line at the bottom of a service setting picture

Service Settings

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To exit a service setting picture:

4. Press

once to return to the service menu, and once more to exit the service

menu.

All changes you have made are saved automatically.

Service Settings

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10.2 Heat Circuit Functions

This section describes the parameters that can be set up for a heat circuit via the service menus.

This picture is the service menu for a heat circuit. Heat circuit functions are divided into 4 groups corresponding to the menu items: Building, Pump/valve, PI con- stants and Limiter. See the overview diagram on page

38.

Each menu item gives access to a number of setting pictures allowing you to view and modify various parameters for the heat circuit. The number of pictures and parameters available depends on the type of controller you are working with and the application you have selected (see page 26 for information about ECL 2000 applications).

This section describes all parameters that can be set for a heat circuit. Please disregard the descriptions of any parameters not available in your specific system setup.

Instructions for operating the ECL 2000’s service menus are provided on page 39.

10.2.1 Building Settings

This section describes the parameters you can set in pictures under the Building menu item.

Summer cut-off The summer cut-off function makes the controller close down the heat circuit.

Display text Parameter Default value,

range

Description

Outdoor temp.

Outdoor temperature

Default value:

18 °C Range:

10-30 °C

When the outdoor temperature reaches this value, summer cut-off is activated, and the heat circuit it closed down

Room temp.

Room temperature

Default value: 24 °C

Range: 10-30 °C

When the room temperature reaches this level, summer cut-off is activated

Note:

By default, the circulation pump of the heat circuit is switched off when the calcu-

lated flow temperature drops below 20 °C. See page 45.

Service Settings

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The diagram in Figure 4 illustrates the summer cut-off function. When the measured outdoor or room temperature exceeds the setpoint (Outdoor temp. or Room temp. setting) by 0.5 K, the flow temperature is reduced. The night setback level is main-

tained until the filtered outdoor/room temperature drops below the setpoint – 0.5 K. See page 71 for information on setting parameters for calculating the filtered temperature.

[Hours]

Plant switched off

Filtered temperature

Temperature

Measured temperature

Time

} 1K

°C

20 18 16

Figure 4. The summer cut-off function

Optimizer

The purpose of the ECL 2000’s Optimizer function is to help run the plant in the most economic manner possible. The Optimizer offers functions for:

• Calculating the optimum starting time in order for room temperature to reach the

desired level (the comfort temperature) at the time defined in the 7-day plan.

• Calculating how much ahead of time the system can be switched to night setback

temperature, making sure, however, that the room temperature does not drop by more than 1 K before the pre-programmed night-setback time.

• Selecting the optimum method for pre-heating the system.

Settings for the optimizer are described on the following pages.

By default, the Optimizer functions are disabled. This has been accomplished by setting the parameters Pre-heat period: Max. limit and Cooling period: Max. limit to 0 hours. The Optimizer functions can be enabled by changing these settings as indicated on page 43. Optimizer heating and cooling can be enabled/disabled separately.

Service Settings

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Pre-heat period This is the function that allows the controller to calculate the optimum starting time. If

the system is equipped with a room temperature sensor, this function is adaptive.

If no room temperature sensor is connected, the controller estimates the room temperature as a function of the actual outdoor temperature and the default pre-heat period entered by the operator (see below). Furthermore, if the system has been on night setback for a long period, the controller increases the length of the pre-heat period. In this way, the controller is able to compensate for fluctuations in outdoor temperature and accumulated heat in buildings.

Display text Parameter Default value,

range

Description

Default

Default preheat period

Default value: 23 hours

Range: 0-24 hours

As default, you must enter a pre-heat period that you estimate is suitable given the following conditions:

• Outdoor temperature 0 °C

• Actual room temperature 5 °C

• Comfort temperature setting 20 °C

• Flow temperature 80 °C during the

heating perio d

Max. limit

Maxi mum preheat period

Default value: 0 hours

Range: 0-24 hours

The maximum pre-heat period the system is allowed to calculate and use. Change this setting to enable the optimizer function

Calculated

Calculated pre-heat period

Range: 0-24 hours

The pre-heat period calculated by the controller using the actual outdoor temperature. This parameter is read-only and cannot be set

Cooling period These settings enable the controller to calculate the cooling period, i.e. how soon the

plant can be switched to night setback temperature while still ensuring that the room temperature only drops by 1 K before the pre-programmed night setback time.

Display text Parameter Default value,

range

Description

Default

Default cooling period

Default value: 1 hour

Range: 0-24 hours

You must enter a default cooling period corresponding to the following conditions:

• Outdoor temperature 0 °C

• Actual room temperature 20 °C

• Room temperature reduction = 1 K

Max. limit

Maximum cooling period

Default value: 0 hours

Range: 0-24 hours

The maximum cooling period the system is allowed to calculate and use. Change this setting to enable the optimizer function

Calculated

Calculated cooling period

Range: 0-24 hours

The cooling period calculated by the controller using the actual outdoor temperature. This parameter is read-only and cannot be set

Service Settings

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Pre-heat method This function enables the controller to determine the flow temperature level during

the pre-heat period. It is possible to:

• Use the boost function, which increases the flow temperature by a user-defined

percentage. The purpose is to reach comfort room temperature sooner, that is, reduce the duration of the pre-heat period.

• Use the slope function, which increases the flow temperature gradually. The aim

is to avoid an unnecessary sudden load of the district heating network and also to prevent the return temperature from getting too high.

Note:

When Slope time is set, the gradual increase of the flow temperature level is applied even if the Optimizer function is disabled.

Display text Parameter Default value,

range

Description

Boost factor

Default value: 0 %

Range: 0-100 %

The percentage by which the flow temperature should be increased during the pre-heat period

Slope time

Default value: 0 min.

Range: 0-200 min.

The length of the time interval during which the flow temperature should be increased gradually to its comfort level

Night setback disable This function disables night setback when the outdoor temperature drops below a

user-defined limit.

Display text Parameter Default value,

range

Description

Disable at

Default value:

–15 °C Range:

OFF, –29 - 15 °C

When Disable at is set to a temperature, night setback is disabled when the actual outdoor temperature is below this limit. When the outdoor temperature lies in the interval between 15 °C and the Disable at temperature setti ng, night setback is gradually reduced

When Disable at is set to OFF, night setback is never disabled

Service Settings

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10.2.2 Pump/Valve Settings

This section describes the parameters you can set in pictures under the Pump/valve menu item.

Pump The following parameters can be set for pump operation:

Display text Parameter Default value,

range

Description

Overrun

Pump overrun period

Default value: 3 min.

Range: 0-30 min.

The number of minutes the pump will continue to run after the calculated flow temperature setpoint has dropped below

20 °C. After this, the pump will be stopped

Exercise

Pump exercise Default value:

ON Range:

ON, OFF

When the pump has been stopped for 72 hours, pump exercise will take place, provided that this parameter is ON. This means that at 12:00 (noon), the pump will be started and run for 1 minute

Night stop

Default value: OFF

Range: ON, OFF

During the night setback period, it is generally desirable to stop the pump, or at least reduce the number of revolutions.

When a normal pump is used, the parameter is set to OFF. In this case, the controller stops the pump when the calculated flow temperature drops below 20 °C.

The ON setting is used for pumps with control of the differential pressure across the pump. This type of pump has a separate input that can be used to instruct the pump to reduce its number of revolutions.

When the Night stop parameter is set to ON, the ECL 2000 sends a STOP signal to the pump as soon as a night setback period starts, thus causing the pump to reduce its number of revolutions, regardless of other pump control criteria.

For further information about the connection and use of this type of pump, see the ECL 2000 Technical Manual (ref. [3])

Motor valve The following parameters can be set for the motor valve in the heat circuit:

Display text Parameter Default value,

range

Description

Stroke

Default value: 16 mm

Range: 1-50 mm

Stroke of the valve motor

Service Settings

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Display text Parameter Default value,

range

Description

Run time 1 mm

Running time 1 mm

Default value: 8 seconds

Range: 1-99 seconds

The time required for the spindle of the motor valve to move 1 mm

Exercise

Valve exercise Default value:

OFF Range:

ON, OFF

When the valve motor has not been running for 72 hours, valve exercise will take place, provided that this parameter is ON. This means that at 12:00 (noon), the gear motor will be started and the valve will be activated for 3 minutes in the opening direction and 3 minutes in the closing direction

Flow cut-off Depending on the type of ECL 2000 and the type of application you have selected, it

is possible to customize 1 or more sensor inputs (see page 27). If one of these inputs is used to measure the water flow, the controller can be set up to close the valve if the flow in the system falls below a user-defined limit.

The following settings are related to flow cut-off caused by measured flow data:

Display text Parameter Default value,

range

Description

Cut-off time

Default value: 0 min.

Range: 0-30 min.

The period during which the valve is closed

Min. flow

Minimum flow Default value:

0.0 l/h Range:

0.0-999 l/h or

0.0-999 m

If the water flow in the system is below this limit, the valve is closed

The range and unit depend on the selected application and flow sensor

Alternatively, if one of the user-definable inputs is set up as a digital input, this signal can be used to activate flow cut-off. In this case, the valve is closed when the input is short-circuited. For such a configuration, only the cut-off time can be set.

In more detail, the flow cut-off function works as follows:

1. The ECL 2000 detects that the condition for activating flow cut-off is present.

2. The ECL 2000 waits for 5 minutes before closing the valve.

3. The valve remains closed for the period of time specified in Cut-off time.

4. The valve is reopened and the ECL 2000 checks whether the flow cut-off condi-

tion is still present.

5. If this is the case, the valve is closed after a delay of 5 minutes. If the flow cut-off

condition is no longer present, the valve remains open.

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10.2.3 PI Constant Settings

This section describes the parameters you can set in pictures under the PI Constant menu item.

Flow temp. control This group of settings determine how the flow temperature is controlled. The follow-

ing parameters can be set:

Display text Parameter Default value,

range

Description

Neutr. zone

Neutral zone Default value:

3 K Range:

0-9 K

When the flow temperature lies within the neutral zone, the valve motor is not activated

P-band

Proportional band

Default value: 70 K

Range: 1-99 K

Indicates the amplification in the control loop. If the flow temperature deviates from the reference temperature, the motor will be positioned proportionally to the temperature deviation and the proportional band setting

Integr. time

Integration time

Default value: 20 seconds

Range: 0-999 seconds

In case of a constant control error signal, the motor will have moved by an amount equal to that caused by the P-band after the integration time has elapsed

When the integration time is set to 0, the integral action is disabled

Return temp. limiter

The controller can be set up to adjust the flow temperature if the actual return temperature either:

• Rises above the return temperature setpoint (maximum limiting)

• Falls below the return temperature setpoint (minimum limiting).

The return temperature setpoint is calculated from the return temperature curve (see page 23).

The following parameters can be set for this control function (see also page 48):

Display text Parameter Default value,

range

Description

Amplification

Default value:

– 0.3 K Range:

– 25.0 - 25.0 K

Amplification for return limiter

Integr. time

Integration time

Default value: 30 min.

Range: 0-200 min.

Integration time

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Room influence These settings determine how the room temperature should influence flow tempera-

ture control. They are only applicable when a room sensor is connected in the heat circuit.

Display text Parameter Default value,

range

Description

Max. amplific.

Maximum amplification

Default value:

0.0 K Range:

– 25.0 - 25.0 K

If the room temperature exceeds the room temperature setpoint, the flow temperature in the heat circuit will be reduced according to the Max. amplific. setting

Min. amplific.

Minimum amplification

Default value:

0.0 K Range:

– 25.0 - 25.0 K

If the room temperature falls below the room temperature setpoint, the flow temperature in the heat circuit will be increased according to the Min. amplific. setting

Adaptive

Default value: OFF

Range: ON, OFF

When the setting is ON, the flow temperature is adjusted according to variations of the room temperature over a period of time

Note: When this setting is ON, the Max. am- plific. and Min. amplific. settings should be symmetrical with respect to 0, for example, Max. amplific. = –3 K and Min. amplific. = + 3 K

10.2.4 Limiter

This section describes the parameters you can set in pictures under the Limiter menu item.

Return temperature The following settings affect the return temperature limiter. See also page 47.

Display text Parameter Default value,

range

Description

Type

Type of limitation

Default value: MAX

Range: MIN, MAX

Type of return temperature limitation used: maximum or minimum. The flow temperature is modified, when the return temperature is either above the calculated setpoint or below it

Calc. setpoint

Calculated setpoint

– The setpoint for the return temperature,

calculated from the return temperature curve. This parameter is read-only and cannot be set

Service Settings

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Flow This and the following functions (Energy, Wind, Sun and Universal) are related to

the sensors you connect to those inputs that can be customized after you have selected an application for the controller (see page 27).

The Flow function requires that the flow in the heat circuit is being measured. It enables the controller to change the flow temperature if the current flow in the circuit exceeds the flow setpoint.

Display text Parameter Default value,

range

Description

Setpoint

Default value:

1.00 m

Range:

0.0-999 l/h or

0.0-999 m

Flow setpoint. Measured flow above this value causes a change in the calculated flow temperature

The range and unit depend on the selected application and flow sensor

Amplification

Default value:

–0.3 K Range:

–25.0 - 25.0 K

Amplification factor for modification of calculated flow temperature

A negative amplification causes a reduction of the calculated flow temperature, a positive amplification causes an increase

Integr. time

Integration time

Default value: 15 min.

Range: 0-200 min.

Integration time for flow influence

Energy This limiter function is available when energy consumption is being measured.

Display text Parameter Default value,

range

Description

Setpoint

Default value: 100 kW

Range:

0.0-999 kW or

0.0-999 MW

When the energy consumption exceeds the setpoint, the calculated flow temperature in the heat circuit is modified

The range and unit depend on the selected application and energy measuring device

Amplification

Default value: –1.0 K

Range: –25.0 - 25.0 K

Amplification factor for modification of calculated flow temperature caused by energy consumption

A negative amplification causes a reduction of the calculated flow temperature, a positive amplification causes an increase

Integr. time

Integration time

Default value: 30 min.

Range: 0-200 min.

Integration time for energy consumption influence

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Wind This function requires that a wind velocity sensor is connected to the system. It in-

creases the flow temperature in the heat circuit if the wind velocity grows above the setpoint.

Display text Parameter Default value,

range

Description

Setpoint

Default value: 10 m/s

Range: 0-50 m/s

When the wind velocity is above this value, the calculated flow temperature will be modified according to the amplification factor

Amplification

Default value:

0.1 K Range:

–25.0 - 25.0 K

Amplification factor for modification of calculated flow temperature caused by wind velocity

A negative amplification causes a reduction of the calculated flow temperature, a positive amplification causes an increase. Normally, the amplification is positive

Sun This function requires that a sun sensor is connected to the system. It reduces the flow

temperature in the heat circuit when the sun intensity rises above the setpoint.

Display text Parameter Default value,

range

Description

Setpoint

Default value: 100 W/m

Range: 0-999 W/m

When the sun intensity is above this value, the calculated flow temperature will be modified according to the amplification factor

Amplification

Default value: –0.1 K

Range: –25.0 - 25.0 K

Amplification factor for modification of calculated flow temperature caused by sun intensity

A negative amplification causes a reduction of the calculated flow temperature, a positive amplification causes an increase. Normally, the amplification is negative

Universal This function allows you to set up a customized limiting function. How the limiter

will work depends on the type of sensor connected to the input. This function is extremely flexible and is used for very special applications.

Please refer to the ECL 2000 Technical Manual (ref. [3]) for documentation of the Universal limiter.

Service Settings

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10.3 Hot-water Circuit Functi ons

This section describes the parameters that can be set up for a hot-water circuit via the service menus. The diagram below shows an overview of the hot-water circuit settings.

Select menu item/ setting

Next/previous picture

As you can see from the diagram above, hot-water circuit functions are divided into 4 groups corresponding to the menu items: Hot water, Pump/valve, PI-constants and Limiter. Each menu item gives access to a number of pictures allowing you to view and modify various parameters for the hot-water service. The number of pictures and parameters available depends on the type of controller and the application you have selected (see page 34 for information about applications).

This section describes all parameters that can be set for a hot-water circuit. Please disregard the descriptions of any parameters not available in your specific system setup.

Instructions for operating the ECL 2000’s service menus are provided on page 39.

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10.3.1 Hot Water Settings

This section describes the options you can set in menus under the Hot Water menu item.

Anti-bacteria function When this function is active, the hot-water temperature is raised once in a 24-hour

period to a user-defined temperature and for a user-defined length of time. The controller accomplishes this by temporarily raising the hot-water temperature setpoint.

The following parameters can be set:

Display text Pa rameter Default value,

range

Description

Duration

Default value:

0.0 hours Range:

0-23:45 hours

The period during which the water temperature will be maintained at the increased level. If this parameter is set to 0, the anti-bacteria function is disabled

Start time

Default value: 23:00

Range: 0:00-23:45

The time of day at which the temperature starts to increase

Temperature

Default value:

70 °C Range:

1-99 °C

The hot-water temperature setpoint will be increased to this level

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Charging temperature These settings control how the water in a hot-water storage tank is heated. The set-

tings are different, depending on the type of hot-water circuit installed. The following pages describe the charging temperature settings for three different charging procedures

(a – c).

1 or 2 temperature sensors can be installed in the storage tank. The optimal system configuration includes 2 sensors, one measuring water temperature in the upper part of the tank and one measuring the temperature in the lower part of the tank.

Charging procedure a

This charging procedure is used in application 2, 10 and

13. The hot-water circuit has direct storage tank control, and the tank is equipped with an internal heat exchanger. For these applications, the following setting is available:

Display text Pa rameter Default value,

range

Description

Cut-in diff.

Cut-in difference

Default value: 6 K

Range: 0-50 K

Charging starts when the upper tank temperature falls below the setpoint mi-

nus ½ the cut-in difference. Charging ends when the lower tank temperature reaches the setpoint plus ½ the cut-in difference or when the maximum charging time has expired (see page 56)

The diagram in Figure 5 illustrates the charging procedure when 1 temperature sensor is installed in the hot-water tank.

Charging

Hot-water temp .

Cut-out

Cut-in

Cut-in difference

Time

set

Figure 5. Charging procedure a

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Charging procedure b Charging procedure b is used in application 3, 4, 11 and

14. The hot-water circuit has indirect storage tank control, and the tank is equipped with an internal heat exchanger. The following settings are available:

Display text Pa rameter Default value,

range

Description

Chrg. increase

Charging temperature increase

Default value: 20 K

Range: 0-70K

While charging, the flow temperature is maintained at a temperature equal to the hot-water setpoint plus the charge increase

Cut-in diff.

Cut-in difference

Default value: 6 K

Range: 0-50K

Charging starts when the upper tank temperature falls below the setpoint mi-

nus ½ the cut-in difference. Charging ends when the lower tank temperature reaches the setpoint plus ½ the cut-in difference or when the maximum charging time has expired (see page 56).

The diagram in Figure 6 illustrates the charging procedure and the settings. In this example, only one sensor is installed in the hot-water tank.

Temperature

Hot-water temperature

Charge increase

Cut-in difference

Charging temperature

Time

Charging

set

Figure 6. Charging procedure b

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Charg. temp. diff.

Charging procedure c

This charging proecedure is used in application 5, 6, 7, 8 and 17. The hot-water service system has indirect storage tank charging and the tank has no internal heat exchanger.

For this type of system, the following settings are available:

Display text Pa rameter Default value,

range

Description

Cut-in diff.

Cut-in difference

Default value: 15 K

Range: 0-50 K

Charging starts when the upper tank temperature falls below the setpoint minus the cut-in difference

Cut-out diff.

Cut-out difference

Default value: 10 K

Range: 0-50 K

Charging ends when the lower tank temperature reaches the setpoint minus the cut-out difference. Alternatively, charging ends when the maximum charging time is exceeded (see page 56)

The diagram in Figure 7 illustrates these settings for a circuit with two sensors installed in the hot-water tank:

Charging

Temperature

Upper tank temperature

Cut-in difference

set

= charging temperature

Cut-out difference

Lower tank temperature

set

Time

Figure 7. Charging procedure c

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10.3.2 Pump/Valve Settings

This section describes the parameters you can set in pictures under the Pump/valve menu item.

Pump This group of settings determines how pumps in the system operate.

Display text Pa rameter Default value,

range

Description

Max. charge

Maximum charging period

Default value: 40 min.

Range: 20-200 min.

No charging is allowed after the elapse of the maximum charging period

Overrun

Overrun period

Default value: 3 min.

Range: 0-9 min.

The maximum time that the pump is allowed to run after charging has ended or after a change from comfort to night setback mode

Prerun

Prerun period Default value:

3 min. Range:

0-9 min.

Delay before the charging pump is started

During charging This group of settings determines how pumps in the system operate during charging.

Display text Pa rameter Default value,

range

Description

Circulation

Default value: YES

Range: YES, NO

When this parameter is set to YES, the circulation pump is active according to the 24-hour program for the hot-water service. If the parameter is set to NO, the pump is stopped during charging

Pump function

Default value: YES

Range: YES, NO

This setting allows the controller to take into consideration a slightly different type of circuit where a changeover valve is used instead of a pump.

When a pump is used, Pump function must be set to YES. When a changeover valve is used, the setting must be NO

Service Settings

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Motor valve These settings determine the function of the motor valve of the hot-water circuit.

Display text Pa rameter Default value,

range

Description

Stroke

Default value: 16 mm

Range: 1-50 mm

Stroke of the valve motor

Run time 1mm

Running time 1 mm

Default value: 1 second

Range: 1- 99 seconds

Time required for the spindle to move 1 mm

Continuous

Default value: NO

Range: YES, NO

When the parameter is set to NO, automatic control is applied only during charging. When the setting is YES, automatic control takes place constantly

Flow cut-off The controller can be set up to close the valve if the system flow falls below a user-

defined limit. The following settings are available when a sensor measuring flow is connected to the system:

Display text Pa rameter Default value,

range

Description

Cut-off time

Default value: 0 min.

Range: 0-30 min.

The period during which the valve is closed

Min. flow

Minimum flow Default value:

0.0 l/h Range:

0.0-999 l/h or

0.0-999 m

When the flow in the system falls below this limit, the valve will be closed

The range and unit depend on the selected application and flow sensor

Alternatively, flow cut-off can also be activated by a digital input signal. The valve is closed when the digital input is short-circuited. For such a configuration, only the cutoff time can be set.

Service Settings

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10.3.3 PI Constant Settings

This section describes the settings in pictures under the PI Constant menu item.

Flow temp. control These settings determine how the flow temperature in the hot-water circuit is con-

trolled:

Display text Pa rameter Default value,

range

Description

Neutr. zone

Neutral zone Default value:

3 K Range:

0-9K

When the flow temperature lies within the neutral zone, the valve motor is not activated

P-band

Proportional band

Default value: 50 K

Range: 1-99 K

Integr. time

Integration time

Default value: 15 seconds

Range: 0-999

In case of a constant control error signal, the motor will have moved by an amount equal to that caused by P-band after the integration time has elapsed

When the integration time is set to 0, the integral action is disabled

Return temp. limiter It is possible to set up the controller to reduce or increase the flow temperature of the

hot-water circuit if the return temperature rises above or falls below a user-defined setpoint (see also page 59).

The following PI constant settings apply to this function:

Display text Pa rameter Default value,

range

Description

Amplification

Default value:

–0.3 K Range:

–25.0 - 25.0 K

Amplification for return limiter

Integr. time

Integration time

Default value: 15 min.

Range: 0-200 min.

Integration time

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10.3.4 Limiter

This section describes the parameters you can set for the hot-water circuit in the pictures under the Limiter menu item.

Return temperature These settings affect the return temperature limiting. See page 58 for further informa-

tion.

Display text Pa rameter Default value,

range

Description

Type

Type of limitation

Default value: MAX

Range: MIN, MAX

Type of return temperature limitation used: maximum or minimum. The flow temperature is modified, when the return temperature is either above the setpoint (MAX) or below the setpoint (MIN)

Setpoint

Default value:

50 °C Range:

10-99 °C

Maxi mum/minimum return temperature in the hot-water circuit

Flow These settings are available when a sensor measuring water flow is connected to one

of the user-definable sensor inputs described on page 27. The Flow function enables the controller to change the flow temperature if the current flow in the circuit exceeds the flow setpoint.

Display text Pa rameter Default value,

range

Description

Setpoint

Default value:

1.00 m

Range:

0.0-999 l/h or

0.0-999 m

Flow setpoint. Measured flow above this value causes a change in the calculated flow temperature

The range depends on the selected application and flow sensor

Amplification

Default value: –0.3 K

Range: –25.0 - 25.0 K

Amplification factor for modification of calculated flow temperature

A negative amplification causes a reduction of the calculated flow temperature, a positive amplification causes an increase

Integr. time

Integration time

Default value: 30 min.

Range: 0-200 min.

Integration time for flow influence

Energy This function allows you to set up a limiting function based the current energy con-

sumption. This function requires that energy consumption is being measured. Refer to page 49 for details.

Universal It is also possible to set up a customized limiting function for a hot-water circuit. How

the limiter will work depends on the type of sensor connected to the input. This function is extremely flexible and is used for very special applications.

Service Settings

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Please refer to the ECL 2000 Technical Manual (ref. [3]) for documentation of the Universal limiter.

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10.4 Common Functions

The service menu Common Functions allows you to view and modify a number of parameters regarding the overall function of the controller. For example, you can select which language should be used in the display, you can set the time and date and you can change the access code.

The diagram gives an overview of some of the controller’s Common Functions.

etc.

Display more menu items. Select menu item/parameter

Next/previous picture

The diagram continues on the next page >

Service Settings

EY.65.H4.02

< The diagram is continued from the previous page

To access Common Functions:

1. In the System Overview picture, press

As shown in the diagram above, the Common Functions are divided into 13 groups. The most important of these are explained on the following pages.

Service Settings

EY.65.H4.02

10.4.1 Set Clock

The Set Clock menu item allows you to adjust the controller’s built-in clock and to modify summer time settings.

The following parameters determine the setting of the clock:

Display text Pa rameter Default value,

range

Description

Time

Range: 00:00-23:59

The current time of day

Date

Range: 1-31

Today’s date

Month

Range: 0-12

The current month

Year

Range: 00-99

The current year

The following settings determine how the change to and from summer time takes place.

Display text Pa rameter Default value,

range

Description

Automatic change

Automatic summer time change

Default value: YES

Range: YES, NO

When the parameter is set to YES, the controller automatically switches to and from summer time on the standard EU dates. These are displayed in the following settings (Summer start, Winter start)

When the parameter is set to NO, you can select the dates of the summer/winter time change yourself by modifying the settings Summer start and Winter start

Summer start

Summer time starts on (date)

On this date, at 02:00 in the morning, the controller will switch to summer time. The date format is MM.DD

Winter start

Summer time ends on (date)

On this date, at 03:00 in the morning, the controller will switch to winter time. The date format is MM.DD

To disable the summer/winter time switch (i.e. make the ECL 2000 use the same time all through the year), set Automatic change to NO and set Summer start and Win- ter start to the same date.

Service Settings

EY.65.H4.02

10.4.2 Alarm Status

This group of pictures allow the operator to read the current alarm status. Alarms can be generated based on measurement data from all relevant sensors, i.e. depending on the selected application, there are a number of Alarm Status pictures. There is an Alarm Status picture for every sensor that has an alarm setup, as explained on page

66. Figure 8 explains the different alarm status values and their relation to the alarm limits that are specified in the Alarm Setup pictures.

Alarm status: Min range Low limit Normal High limit Max range

TemperatureMaxHighMin LowLimit:

Figure 8. Alarm limits and status intervals

Note:

All the parameters in the Alarm Status pictures are read-only.

Display text Pa rameter Default value,

range

Description

Actual

The actual value of the measured temperature

Date, Time

The date and time of the last change in alarm status

Status

Range: Min range, Low limit, Normal, High limit, Max range, Disabled, Fault

The current alarm status When Status has the value Disabled, all

alarms from the sensor are disabled. No internal alarms are generated, and if P3 is set up as an alarm output, the output does not change

When Status has the value Fault, this indicates that the sensor is not connected or there is a sensor error

Range: Min range, Low limit, Normal, High limit, Max range, Fault

The previous alarm status, i.e. the alarm status before the latest status change

Service Settings

EY.65.H4.02

10.4.3 Alarm Setup

The pictures under the Alarm Setup menu item determine the conditions that will cause the controller to report an alarm. Alarms can be generated based on measurement data from all relevant sensors, i.e. depending on the selected application, there are a number of Alarm Setup pictures.

Limits These settings determine the levels at which the alarm status changes. This is illus-

trated in Figure 8 on page 65.

Display text Pa rameter Default value,

range

Description

Max

Default value:

160 °C Range:

0-250 °C

When the measured temperature is above Max, the alarm status has the value “Max range”

High

Default value: 160 °C

Range: 0-250 °C

When the temperature is above High but below Max, the alarm status has the value “High limit”

Low

Default value: –60 °C

Range: –100-100 °C

When the temperature lies between Low and High, the alarm status has the value “Normal”

Min

Default value: –60 °C

Range: –100-100 °C

When the temperature is between Min and Low, the alarm status has the value “Low Limit”. When the temperature lies below Min, the alarm status is “Min range”

In some applications, the settings High and Low cannot be modified directly but are assigned one common value. If you try to modify High or Low, the ECL 2000 displays a picture allowing you to specify an interval around the common High/Low setting. The upper and lower limits of this interval will function as the High and Low alarm limit, respectively.

P3 The column P3 is only displayed if the output P3 is set up as alarm output (see

page 33). The setting in this column determines whether the output P3 should react to the corresponding alarm limit.

Note:

Using P3 as an alarm output is only possible in some applications.

Display text Pa rameter Default value,

range

Description

Relay outputP3Default value:

OFF Range:

OFF, ON

See the example below

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EY.65.H4.02

Example

With this setup shown for sensor S2, P3 will be ON when the temperature is above

Max and when the temperature is below Min.

Event The Event parameter determines how the ECL 2000 transmits alarms to an external

alarm recipient, for example a main station.

Note:

In version 2.0 of the ECL 2000, you are able to read and modify the Event settings. However, these settings have no influence on the function of the controller.

Display text Pa rameter Default value,

range

Description

Event

Default value:

Range: ON, OFF

Hi, – Lo, – 0, 1, 2, 3

The Event parameter consists of 4 settings that can be changed individually.

The top line can be set to ON or OFF. When set to OFF, alarms generated by this sensor will not be transmitted to an external recipient. When the setting is ON, alarms will be transmitted to the recipient address determined by the setting in fourth line (0, 1, 2, 3)

The setting Hi in the second line indicates that an alarm will be transmitted to an external recipient when High or Max is exceeded

The setting Lo in the third line indicates that an alarm is transmitted to an external recipient when the temperature drops below Low or Min

The fourth line (0, 1, 2, 3) is used to select one of four possible classes of external alarm recipients. The setting is reserved for future use

10.4.4 Log Today, Log Yesterday

These two groups of pictures allow the operator to monitor today’s and yesterday’s logs for all possible sensors. There is a log picture for each relevant sensor, showing the measured temperature. See Appendix C on page 87 for a complete list of the data displayed in log pictures.

Note:

When the controller’s date or time setting is modified, this may cause the log displays to be inaccurate during the following 24-hour period.

Service Settings

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10.4.5 Override

The setting pictures under the Override menu item include parameters that determine the priority of the service water heating, the operation of heat circuits during night setback, safety thermostat settings for individual circuits and mixing difference.

Hot-water priority These settings determine how the controller should react if it is not possible to main-

tain the hot-water temperature at the setpoint specified by the user.

Display text Pa rameter Default value,

range

Description

Priority

Default value: OFF

Range: ON, OFF

When this parameter is set to ON, the heating of water takes priority over the heating of rooms

Max. deviation

Maximum deviation

Default value:

–5 K Range:

–60-0 K

The number of degrees the hot-water temperature or charging temperature is allowed to drop below the setpoint before the priority function is activated.

When this happens, the motor valves to the heat circuits are gradually closed

Flow temp. diff.

Flow temperature difference

Default value: –20 K

Range: –60-0 K

This parameter is active when Priority is set to OFF, which means that the heat circuit(s) and the hot-water circuit are operated at the same time. An example is illustrated in Figure 9 on page 69

In such a situation, the charging temperature needed in the hot-water circuit can be significantly above the calculated flow temperature in the heat circuit. The parameter Flow temp. diff. is used to prevent the actual flow temperature in the heat circui t from getting too high: When Flow temp. diff. is exceeded, the pump in the heat circuit is stopped

1 Whether it is the charging temperature or the hot-water temperature depends on the type of hot-water circuit.

More information about the hot-water priority of the various hot-water circuits is available in the ECL 2000 Technical Manual (ref. [3])

Service Settings

EY.65.H4.02

Figure 9. The heat circuit and the hot-water circuit can be operated at the same time

Total stop These parameters determine how the individual heat circuits are operated during night

setback:

Display text Pa rameter Default value,

range

Description

Heat circuit 1, Heat circuit 2

Default value: OFF

Range: ON, OFF

When Total stop for a heat circuit is set to ON, the circulation pump is switched off and the motor valve is closed completely

When Total stop is set to OFF, the heat circuits are controlled according to the night setback temperature setting

Safety thermostat The safety thermostat function allows you to specify a maximum limit for the flow

temperature of all circuit types.

Display text Pa rameter Default value,

range

Description

Heat circuit 1 Heat circuit 2 Hot water

Default value:

150 °C Range:

0-200 °C

The maximum flow te mperature for the individual circuits. If the flow temperature rises 5 K above this setting, the motor valve supplying the circuit is driven towards the closed position

When the flow temperature has fallen to 5 K below the specified temperature, normal control takes over again

Service Settings

EY.65.H4.02

Mixing

Display text Pa rameter Default value,

range

Description

Difference

Default value: 5 K

Range: 0-30 K

The minimum difference between the

temperature setpoint for a main heat

exchanger and the setpoint for a

mixing circuit connected to the heat

exchanger (S1 and S4 in the example

in Figure 10)

Figure 10. Heat circuit with mixing valve

10.4.6 Communication

When the ECL 2000 LON option is installed, this setting picture displays the con-

troller’s LON address and allows you to activate the service pin.

Display text Pa rameter Default value,

range

Description

Subnet

Default: For LON module TP/XF-78: 12 For LON module FTT-10F: 11

Range:

0, 1 – 255

Read-only parameter. A value of 0

means that the Subnet part of the

controller’s LON address is unde-

fined

Node

Default: For LON module TP/XF-78: 12 For LON module FTT-10F: 11

Range: 0, 1 – 127

Read-only parameter. A value of 0

means that the Node part of the con-

troller’s LON address is undefined

LON

Range: 0000 0000 0000 – FFFF FFFF FFFF

Read-only parameter. The 48 bit id of

the Neuron chip on the ECL 2000’s

LON module. A value of

0000 0000 0000 indicates that the

LON option is not installed

Service

–

Press

to activate the service pin, i.e. make the ECL 2000 transmit its LON neuron id onto the network

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10.4.7 Sensors

Cut-off time constant These constants are used for calculating the filtered temperature (see page 42). The

controller calculates filtered values of outdoor and/or room temperatures, depending on what sensors are connected to the system.

Display text Pa rameter Default value,

range

Description

Tout circ. 1 Tout circ. 2

Outdoor temperature, circuit 1 or 2

Default value: 4 h

Range:

1.0-50.0 h

Time constant for calculating filtered outdoor temperature. The filtered temperature is used to control summer cutoff

Troom circ. 1 Troom circ. 2

Room temperature, circuit 1 or 2

Default value: 1 h

Range:

1.0-50.0 h

Time constant for calculating filtered room temperature. Used to control summer cut-off

Time constants These time constants are used to convert the input signals received from sensors con-

nected to the system.

Note:

Sensor time constants concern Pt 1000, ESMF and 0–10 V sensors. Pulse and digital sensors are not affected by the time constants. See page 30 for information on sensor setup.

Display text Pa rameter Default value,

range

Description

S1, S2, etc.

Sensor 1, sensor 2, etc.

Default value: Depends on the type of sensor used

Range: 0-999 seconds or 0-200 minutes

Time constants for sensor inputs

The range 0-200 minutes is for outdoor temperature sensors

Service Settings

EY.65.H4.02

10.4.8 Degree Days

This group of pictures allows you to modify the way in which degree days are calculated by the ECL 2000.

Display text Pa rameter Default val-

ues, range

Description

Actual

Range: 0-32767

Number of degree days calculated for the current year. This is a read-only parameter

Last season

Range: 0-32767

Number of degree days calculated during the previous year. This is a read-only parameter

Reference

Default:

17 °C Range:

0-30 °C

The reference temperature used for degree days calculation

Start Season

Default: Jun

Range: Jan – Dec.

The month in which the season for degree day calculation starts. When Start Season is changed, Actual is reset to 0

10.4.9 Access Code

This function allows you to change the access codes of the controller.

Note:

Before being allowed to display this setting picture, you are required to enter the level 2 access code. See also page 20.

Display text Pa rameter Default value,

range

Description

Code level 1

Default value: 000

Range: 000-999

Access code required to change user parameters (for example, temperature setpoints, 7-day plan).

A setting of 000 indicates that the code is not active

Code level 2

Default value: 999

Range: 000-999

Access code required to modify all settings

A setting of 000 indicates that the code is not active

Service Settings

EY.65.H4.02

10.4.10 Energy Consumption

Sensor input When energy consumption is being measured by a sensor connected to one of the sen-

sor inputs S8, S9, S10 or S11), the following picture displays the energy consumption and allows you to reset the measurement:

Display text Pa rameter Default value,

range

Description

Accum.

Accumulated Range:

0-9999 MWh or 0-9999 GWh

The accumulated energy consumption

Energy

Range: 0-999 kW or 0-999 MW

The currently measured energy consumption. This parameter is read-only and cannot be modified

Reset

Select this parameter and press

to reset the accumulated energy consumption to 0. A new calculation of the accumulated value is started

LON input When energy consumption is being measured by a device connected to the ECL 2000

via LON, the following picture displays the measured energy consumption:

Display text Pa rameter Default value,

range

Description

Accum.

Accumulated Range:

0-9999 MWh or 0-9999 GWh

Read-only parameter. The accumulated energy consumption

Energy

Range: 0-999 kW or 0-999 MW

Read-only parameter. The currently measured energy consumption

Note:

When energy consumption is being measured by a device connected via LON, the accumulated consumption cannot be reset. This is due to the fact that the accumulated energy consumption is calculated by the device and transmitted to the ECL 2000.

Service Settings

EY.65.H4.02

10.4.11 Language

The following picture allows you to select a language for the ECL 2000’s displays. Note, however, that the service menus are always in English.

Display text Pa rameter Default value,

range

Description

Select

Select language

Default value: English

Range: English, Danish, German, Polish

Use

and to select the desired

language

10.4.12 Version

This picture displays version information about the controller.

Display text Pa rameter Default value,

range

Description

Type

Range: 1, 2

The type number of the controller

CPU softw.

The version number of the system software

I/O softw.

The version number of the I/O software

LON softw.

The version number of the LON software. This version number is only displayed when the LON option is installed in the ECL 2000

Appendix A. Display Charts

EY.65.H4.02

APPENDIX A. DISPLAY CHARTS

A.1 Setting the Operating M ode

For All Circuits For 1 Circuit

Adjust display contrast

Select temperature setpoint

Change temperature setpoint

ÏÏ

Select temperature setpoint

Change temperature setpoint Extend comfort period (party func-

tion)

ÏÏ

Select temperature setpoint

Change temperature setpoint Extend night setback period (econ-

omy function)

ÏÏ

Select temperature setpoint

Change temperature setpoint

Appendix A. Display Charts

EY.65.H4.02

A.2 System Overview. Selecting a Circuit. Viewing Circuit Status

Í Í Í

Í Í

Select setpoint

Change setpoint

Í Í Í

Select setpoint

Change setpoint

Í Í Í

S8, S9 S10, S11

L1, L2 L3, L4

Appendix A. Display Charts

EY.65.H4.02

A.3 Time Programming

Í Í

Move cursor

Select mode

Ï Ï Ï

Select day

Select group of days

Change month

Ï Ï Ï

Move cursor

Comfort temp. Night setback temp.

Move cursor Move cursor

Select dates

Move cursor Comfort temp. Night setb. temp.

Appendix A. Display Charts

EY.65.H4.02

A.4 Weather Compensation Curves

Ï Ï

Select curve point

Select x or y Previous/next picture

Move point

Select curve point

Select x or y Previous/next picture

Move point

Ï Ï

Select max. or min. Previous/next picture

Change max. or min.

Select max. or min. Previous picture

Change max. or min.

Add/remove break point

Appendix A. Display Charts

EY.65.H4.02

A.5 Configuring the ECL 2000

...

Press and keep depressed to select application

Select parameter

Change parameter

...

Í Í

...

Appendix A. Display Charts

EY.65.H4.02

A.6 Manual Override

Select component Next picture

Pump: ON Valve: OPEN

Pump: OFF Valve: CLOSE

Í Í Í

Appendix B. Service Menus

EY.65.H4.02

APPENDIX B. SERVICE MENUS

B.1 Heat Circuit Menus

012345

Í Í Í Í Í

Í Í

or or or

Appendix B. Service Menus

EY.65.H4.02

B.2 Hot-Water Service Menus

012345

Í Í

or or

Í Í Í

or or

Appendix B. Service Menus

EY.65.H4.02

B.3 Common Function Menus

012345

Í Í

etc.

Í Í

etc.

Í Í

etc.

Appendix B. Service Menus

EY.65.H4.02

B.3 Common Function Menus (Cont.)

012345

Í Í

etc.

Í Í Í

Appendix B. Service Menus

EY.65.H4.02

B.3 Common Function Menus (Cont.)

012345

or ...

Appendix B. Service Menus

EY.65.H4.02

Appendix C. Log Displays

EY.65.H4.02

APPENDIX C. LOG DISPLAYS

The display picture to the left is an example of an ECL 2000 Log picture. You can

display today’s and yesterday’s log from the circuit picture (see page 12) and from Manual Override (page 36).

Depending on the currently selected application, the log data displayed in these pictures is slightly different. The table below tells you what data is displayed in today’s and yesterday’s logs for the individual circuits of each ECL 2000 application. For example, the table entry

______

Flow temp. S1

indicates that the fully drawn curve in the log picture shows the flow temperature measured by the sensor S1. See the ECL 2000 Installation Guide (Ref. [2]) for diagrams showing the location of the sensors for each application.

Application Heat circuit 1 Heat circuit 2 Hot-water circuit

______

Flow temp. S1

______

Flow temp. S4

--------- Return temp. S2 --------- Return temp. S5

______

Flow temp. S1

______

Upper tank temp. S6

--------- Return temp. S2 --------- Lower tank temp. S7

______

Flow temp. S1

______

Upper tank temp. S6

--------- Return temp. S2 --------- Lower tank temp. S7

______

Flow temp. S4

______

Upper tank temp. S6

--------- Return temp. S5 --------- Lower tank temp. S7

______

Flow temp. S1

______

Upper tank temp. S6

--------- Return temp. S2 --------- Lower tank temp. S7

______

Flow temp. S1

______

Upper tank temp. S6

--------- Return temp. S2 --------- Lower tank temp. S7

______

Flow temp. S4

______

Upper tank temp. S6

--------- Return temp.

S11 --------- Lower tank temp. S7

______

Flow temp. S1

______

Upper tank temp. S6

--------- Return temp. S2 --------- Lower tank temp. S7

______

Flow temp. S1

______

Flow temp. S4

--------- Return temp. S2 --------- Return temp. S5

______

Flow temp. S1

______

Flow temp. S4

______

Upper tank temp. S6

--------- Return temp. S2 --------- Return te mp. S5 --------- Lower tank temp. S7

ECL 2000 Type 2 only

Appendix C. Log Displays

EY.65.H4.02

Application Heat circuit 1 Heat circuit 2 Hot-water circuit

______

Flow temp. S1

______

Flow temp. S4

______

Upper tank temp. S6

--------- Return temp. S2 --------- Return te mp. S5 --------- Lower tank temp. S7

______

Flow temp. S1

______

Flow temp. S4

--------- Return temp. S2 --------- Return temp. S5

______

Flow temp. S1

______

Flow temp. S4

______

Upper tank temp. S6

--------- Return temp. S2 --------- Return te mp. S5 --------- Lower tank temp. S7

______

Flow temp. S1

______

Flow temp. S4

______

Upper tank temp. S6

--------- Return temp. S2 --------- Return te mp. S5 --------- Lower tank temp. S7

______

Flow temp. S1

______

Flow temp. S4

______

Flow temp. S10

--------- Return temp. S2 --------- Return te mp. S5 --------- Return temp. S 11

______

Flow temp. S1

______

Flow temp. S4

______

Flow temp. S10

--------- Return temp. S2 --------- Return te mp. S5 --------- Return temp. S 11

______

Flow temp. S1

______

Flow temp. S4

______

Upper tank temp. S6

--------- Return temp. S2 --------- Return te mp. S5 --------- Lower tank temp. S7

Note:

Note also that the y-axis scaling changes automatically in order for the log curves to be displayed with the maximum resolution.

ECL 2000 Type 2 only

Glossary

EY.65.H4.02

GLOSSARY

7-day plan This 7-day, 24-hour schedule is active when the ECL 2000 is in Automatic mode and

instructs the controller when it should change from comfort to night setback temperature and vice versa.

Access code Before you are allowed to modify any parameters of the ECL 2000, you must supply a

3-digit access code. The controller has 2 access codes: One required to change parameters during normal day-to-day operation (for example, temperature setpoints), and one required to change service settings.

Anti-bacteria function This function prevents bacteria growth in a hot-water tank. Once in a 24-hour period,

the temperature in the hot-water tank is raised to a user-defined level, for a userspecified length of time.

Application A standard system type that the ECL 2000 can be set up to control. The ECL 2000

comes with a number of built-in standard applications: ECL 2000 Type 1 has 14 and Type 2 has 17 applications.

Automatic In this operating mode, the ECL 2000 automatically changes between comfort and

night setback temperature according to a 7-day, 24-hour plan programmed by the user.

Configuration When the ECL 2000 has been installed, it must be configured to match the type of

system, i.e. the application, which it is going to control. This entails selecting an application type and possibly also customizing user-definable inputs and outputs.

Comfort In this operating mode, the ECL 2000 maintains the temperature in the heat or hot-

water circuit at comfort level, which normally means daytime level.

Degree days The number of degree days indicates how cold it has been during a certain period of

time. The degree days of a period are found by multiplying the number of days and nights in the given period by the difference between the measured external temperature and the reference temperature for the country in question. Normally, the

reference temperature is set to 17 °C. The ECL 2000 calculates and displays degree days both for the current month and for the heating season, which usually starts on the

1. June.

ECL 2000 types Two different types of the ECL 2000 are available:

• Type 1 has 9 sensor inputs, 3 sets of relay outputs for pump control and 2 sets of

3-point outputs for direct motor valve control. Type 1 is available for 230V and 24V supply.

• Type 2 has 11 sensor inputs, 3 sets of relay outputs for pump control and 3 0-10V

outputs which can be used for motor valve control. Type 2 is available for 24V supply.

Economy function This facility allows you to extend the ECL 2000’s night setback period temporarily.

After the elapse of the extended night setback period, the controller reverts to its normal 24-hour program.

Glossary

EY.65.H4.02

Flow cut-off This function enables the controller to cut off the water flow in a heat or hot-water

circuit, either when the flow falls below a user-defined minimum or when the controller receives an input signal instructing it to cut off flow.

Holiday plan You can set up the ECL 2000 to follow a different time program for a certain period

of the year. During this period, the controller can either follow a special 24-hour program or it can function in stand-by mode.

K Abbreviation of Kelvin, a unit used to indicate temperature differences. A

temperature difference of 1 K is equivalent to a temperature difference of 1 °C.

Limiter This facility enables the ECL 2000 to increase or reduce the temperature in a heat or

hot-water circuit given certain outside conditions. The controller can keep the return temperature within maximum or minimum limits, it can reduce the flow temperature if the sun intensity or energy consumption exceeds a user-defined limit, or it can increase the flow temperature if the wind velocity exceeds a maximum limit.

LON Local Operating Network, a type of local area network that is especially well suited

for control and monitoring purposes.

Manual override This operating mode enables the user to operate pumps and motor valves in a circuit

manually. While this mode is selected, automatic control is disabled for all heat and hot-water circuits of the plant.

Night setback In this operating mode, the ECL 2000 maintains the temperature in the heat or hot-

water circuit at night setback level, which is normally lower than the comfort level.

Night setback disable This facility lets the controller disable night setback when the outdoor temperature

drops below a user-defined limit.

Operating mode The ECL 2000 operates in four different modes: Automatic, comfort, night setback

and stand-by.

Optimizer The controller’s optimizer function allows it to determine the most economical

manner to run the plant. For a heat circuit, the optimizer is used to calculate:

• A period for pre-heating the plant before a programmed transition from night

setback to comfort mode. The controller increases the flow temperature at the beginning of the pre-heat period, thus ensuring that the room temperature setpoint is reached at the pre-programmed time.

• A period for cooling down the plant before a programmed change from comfort

to night setback mode. The controller starts cooling down the plant, at the same time ensuring that the room temperature does not drop by more than 1 K before the programmed change to night setback.

Party function This facility enables the user to extend the comfort period temporarily, for example

for a few hours in the evening. After the elapse of the extended comfort period, the controller reverts to its normal 24-hour program.

Glossary

EY.65.H4.02

PI controller Proportional-integral controller. This is the method or algorithm that the ECL 2000

uses to control temperature. A PI controller combines:

• A proportional controller, which provides fast control ensuring that the

controller’s output signal is proportional to the measured process variable. The effect of the proportional controller is determined by the parameter amplification or proportional band.

• An integral controller, which helps remove any constant deviation of the process

variable from the desired value (the setpoint). The parameter integration time determines the effect of the integral controller.

Pt 1000 Temperature dependent resistance: 1000

at 0 °C. The resistance varies by

approximately 3.8

/K.

Room influence This facility allows the controller to reduce or increase the flow temperature in a heat

circuit if the room temperature exceeds a user-defined maximum or minimum.

Service settings The service settings are a number of parameters that determine how the ECL 2000

functions. The service settings can be displayed and modified via the controller’s service menu.

Stand-by In this operating mode, automatic control of heat and hot-water circuits is disabled.

However, the controller constantly monitors the flow temperature in the circuits. Should the flow temperature drop below 6 °C, the controller activates heating in order to avoid frost damage.

Summer cut-off This facility enables the controller to close down a heat circuit when the outdoor or

room temperature exceeds a user-defined level.

Timer The ECL 2000’s timer function enables the controller to switch on and off some

external device, according to a user-defined 7-day, 24-hour plan.

Weather compensation A facility that enables the controller to take outdoor weather conditions into

consideration for heat circuit control. In the ECL 2000, this facility is based on a userdefinable weather compensation curve which determines what the flow temperature should be when the outdoor temperature varies. It is possible to set up weather compensation curves for flow and return temperatures in heat circuits.

Glossary

EY.65.H4.02

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References

EY.65.H4.02

REFERENCES

[1] ECL 2000 Quick Guide

VI.74.V1.02

[2] ECL 2000 Installation Guide,

EI.65.D4.02

[3] ECL 2000 Technical Manual

EU.65.G2.02

[4] ECL 2000 Technical Manual LON Option

VI.74.N2.02

[5] ECL 2000 Data Sheet

VD.74.H2.02

References

EY.65.H4.02

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Danfoss ECL 2000 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual