Danfoss ECL 2000 User guide

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

ii

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss re-

serves the right to alter its products without notice. This also applies to products already on order provided that such al-

terations 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

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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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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This page is intentionally left blank

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: com-

fort and night setback. The flow temperature of a heat circuit and the hot-water tem-

perature are kept at either comfort or night setback temperature, according to a user-

defined 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 ac-

cording 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 lim-

iting 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, 24-

hour 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 exam-

ple 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 facil-

ity 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 prin-

ciples.

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 oper-

ate in 4 different modes: Automatic, Comfort, Night setback and Stand-

by.

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 func-

tion, 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 all 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.

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

1

. 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 tempera-

ture

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.

1

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

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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:

2

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.

3

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 control-

ler.

2

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

3

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)

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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 pic-

tures. 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.

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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 se-

lected circuit. The sym-

bols used in the picture are

explained below.

Today’s log. The fully

drawn curve shows varia-

tions in flow temperature.

The dotted curve indicates

the return temperature.

4

Yesterday’s log. The fully

drawn curve shows the

flow temperature, the

dotted curve shows the

return temperature.

4

Temperature readings

The following temperature information is available in Status pictures, depending on

the selected application and the type of circuit:

5

Actual (49 °C) and reference flow temperature (calcu-

lated, 48 °C), return temperature (24 °C) for a radiator

heating system.

Primary return temperature and secondary flow tem-

perature 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, de-

pending 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.

4

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

5

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 tem-

perature 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.

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Danfoss ECL 2000 User guide

Danfoss ECL 2000 User guide

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