Erc Buderus

7209 1700 - 12/2001 GB For the user

Read carefully before operation

Operating instructions

for the ERC controller for Buderus wall-hung gas boilers

2

Preface

Document guide for the ERC controller • version 12/2001

Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.deWe reserve the right to make changes based on technical enhancements.

Preface

Important general application instructionDear reader, This operating manual provides vital information concerning the "ERC" 1 controller and the operation of your Buderus wall-hung gas boiler.

We reserve the right to make technical changes.Due to ongoing further developments, figures, functional steps and technical data may show slight deviations.

With your supportOur documents are regularly updated. Your suggestions for enhancements will help us keep the design and the documents user-friendly. Please feel free to contact us.

StorageThis operating manual includes important information concerning the safe, professional and economical use of Buderus wall-hung gas boilers. Always keep this manual near your installation.

ImprintManufacturer: Buderus Heiztechnik GmbHAddress: Justus-Kilian-Str. 1

D - 35573 WetzlarDocument type: Operating manualProduction date: 01.12.2001

1. (Ecomatic room controller)

Table of contents

3Document guide for the ERC controller • version 12/2001


1 Conformities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51.1 Standards, directives and regulations . . . . . . . . . . . . . . . . . . . . . . . 51.2 Designation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 Concerning this manual . . . . . . . . . . . . . . . . . . . . . . . . . 62.1 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.2 Application instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.3 Tips concerning economical heating . . . . . . . . . . . . . . . . . . . . . . . . 72.4 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3 Basic instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93.1 Guarantee and liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93.2 Obligations of buyer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93.3 Allowable users . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4 Product description . . . . . . . . . . . . . . . . . . . . . . . . . . 114.1 Functions of the ERC controller . . . . . . . . . . . . . . . . . . . . . . . . . 114.2 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114.3 Unprofessional use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114.4 Operating elements, operating levels . . . . . . . . . . . . . . . . . . . . . . 124.5 Default adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144.6 Danger zones. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144.7 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5 Operating the basic functions . . . . . . . . . . . . . . . . . . . . . 165.1 Commission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165.2 Adjusting the current day of the week and the time . . . . . . . . . . . . . . . 175.3 Selecting the operating mode . . . . . . . . . . . . . . . . . . . . . . . . . . 185.4 Programming the heating switchpoints . . . . . . . . . . . . . . . . . . . . . 195.5 Adjusting the target room-temperature . . . . . . . . . . . . . . . . . . . . . 215.6 Adjusting the water temperature . . . . . . . . . . . . . . . . . . . . . . . . . 235.7 Resetting to the default values . . . . . . . . . . . . . . . . . . . . . . . . . . 24

6 Operating the special functions . . . . . . . . . . . . . . . . . . . . 256.1 Adjusting summer/winter time . . . . . . . . . . . . . . . . . . . . . . . . . . 256.2 Holiday programme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256.3 Heating pause . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266.4 Party mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276.5 Adjusting the summer/winter conversion . . . . . . . . . . . . . . . . . . . . 28

Table of contents

Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.de


We reserve the right to make changes based on technical enhancements.

7 Operating the plug-in modules . . . . . . . . . . . . . . . . . . . . . 297.1 Outdoor-temperature module AM 1.0 . . . . . . . . . . . . . . . . . . . . . . 297.2 On-line module OM 1.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 317.3 Hygrometer module HM 1.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . 317.4 Barometer module BM 1.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

8 Calibrating the sensors . . . . . . . . . . . . . . . . . . . . . . . . . 338.1 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338.2 Example of calibrating the room-temperature sensors . . . . . . . . . . . . . . 33

9 Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

10 Operating and display elements . . . . . . . . . . . . . . . . . . . . 35

11 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Conformities 1



1 Conformities

1.1 Standards, directives and regulations

The construction and operating behaviour of the Buderus ERC controller as well as Buderus wall-hung gas boilers meet the ‘basic requirements for gas units directive 90/396/EEC’ and the standards DIN 4702-6, EN 483, EN 676 and EN 677.For an extensive list of all standards and directives taken into account, please see the installation and maintenance instructions of the subject wall-hung gas boiler.

1.2 Designation

F The Buderus ERC controller and wall-hung gas boiler meet the basic requirements of the relevant standards and directives. Their conformity has been proven. The relevant documents have been deposited with the manufacturer.

Concerning this manual2

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2 Concerning this manual

2.1 Safety instructions

2.1.1 Clarification of the symbols used in the safety instructions

This operating manual uses the following symbols as safety instructions for the user:

aWARNING!This symbol indicates a threat to the health or life of personnel. Non-observance of such an instruction may lead to death or serious injury.

ACAUTION!This symbol indicates risk of injury to the user. It provides important information concerning the professional handling of the wall-hung gas boiler. If these instructions are not observed, such may lead to functional faults in the wall-hung gas boiler and injury to the user.

2.1.2 Concerning the safety instructions

All the safety instructions in this installation and maintenance manual must observed.

2.1.3 Procedure if gas can be smelled

ADANGER!If gas is smelled near your wall-hung gas boiler or in your house, there is a risk of explosion and the occupants are in mortal danger. If you smell gas, follow the procedure below:

- Extinguish any fires, open flames and/or cigarettes!

- Avoid creating sparks! Do not use any electrical devices - not even your phone, wall sockets or doorbell!

- Close the main gas shut-off valve!

- Open all windows and doors!

- Alert all other occupants and have them leave the building!

- Go to a telephone far from the building concerned and call the gas company or specialized wall-hung gas boiler company!

Concerning this manual 2



2.2 Application instructions

2.2.1 Clarification of the symbols used in the application instructions

This operating manual uses the following symbols as instructions for the user:

J NOTE!This symbol provides general application tips and especially useful information. Such will help you to make optimal use of all device functions, save energy and be friendly to the environment.

N EXCLUSION OF LIABILITY!This symbol refers to an exclusion from manu-facturer liability that can be caused by faults or omissions on the part of the operating company or operator.

GRECYCLING!This symbol refers to the correct reuse of the packing material and worn assemblies (divided into metal, plastic, etc.).

D LITERATURE!This symbol provides information concerning further literature.

V TOOL!This symbol refers to the use of the supplied special tools or provides other information concerning the correct use of tools and/or measuring devices.

2.3 Tips concerning economical heatingMoney can be saved by employing well-considered and exact heating procedures that take into account when heating is actually required.Modern control technology guarantees optimal comfort at minimal energy consumption levels while its operation remains simple despite a multitude of technical options.Observe the following instructions to save energy and care for the environment.� Always ask for extensive instructions from your

specialized heating professional. Inform yourself about anything that is not clear.

� Ask for the adjustment of an optimum heating char-acteristic for the special conditions in your house.

� Use the operating manual of your wall-hung gas boiler installation.

� Make sure your heating installation receives regular service.

� In cold seasons, ventilation must be brief but copious. Prevent rooms from becoming cold.

� Check the adjustment levels of the thermostat valves in the individual rooms.

� Do not set the living room or water temperatures higher than required.

� Check whether the factory programme (switching times and room temperatures) and the hot-water facility correspond to your usual way of life. If necessary, adapt the factory programme to your individual desires.

� Use the adjustment possibilities of the summer/winter conversion for the transition periods.

� A comfortable room climate depends not only on the room temperature but also on the relative air humidity. The dryer the air is, the cooler the room will feel. Keep plants in the room to increase the relative air humidity.

� Protect against frost. Deactivate the installation for longer standstill periods. Drain the water from the wall-hung gas boiler, the storage tank and the pipes of the wall-hung gas boiler installation. Frost will not pose a danger if the entire system is dry.

Concerning this manual2

8




2.4 Definitions

Concept Definition

Day mode/operation

Target room temp. above 16 °C

Night mode Target room temp. not above 16 °C, preset in the factory

Night reduction

See night mode

Reduced mode

See night mode

Wintermode

Room- and hot-water heating active

Summer mode

Only hot-water heater active

factory programme

Preset heating-mode week sequence with various heating periods and temperatures

Standard programme

See factory programme

Heating programme

Standard programme adapted to individual circumstances

UBA Universal Burner Automatic unit; 'control centre' of the burner; installed directly at the heating installation

Basic instructions 3



3 Basic instructions

3.1 Guarantee and liabilityGuarantee claims are conditional upon correct func-tional operation and maintenance. The manufacturer guarantees that all parts on delivery were faultless as far as material and workmanship were concerned. In principal, our General Terms and Conditions of Sale and Delivery shall apply. These will be available to the operating company as from the conclusion of the agreement or earlier.Guarantee and maintenance claims for personal and material injury shall be excluded if they can be traced back to one or more of the following causes:

N LIABILITY EXCLUSION! The manufacturer cannot be held liable for damage caused by operating failures or non-observance of the operating manual or inadequate service, maintenance or care.

3.2 Obligations of buyer

J Observe the instructions in the operating manual! A basic condition for the safe handling and faultless operation of the wall-hung gas boiler is knowledge of the basic safety instructions and safety regulations.

N LIABILITY EXCLUSION!The manufacturer cannot be held liable for damaged caused by omissions from the instruc-tion duties of the purchaser.

AWARNING!The buyer is responsible for seeing that competent professional personnel have at their disposal the operating manual of the wall-hung gas boiler when handling the wall-hung gas boiler

- Non-intended use of the wall-hung gas boiler

- Unprofessional installation, commission, operation or maintenance of the wall-hung gas boiler

- Operation of the wall-hung gas boiler while safety devices are faulty or safety and protective devices have not been correctly installed or are non-operable

- Non-observation of the instructions in the technical documents with regard to trans-portation, storage, installation, operation, service and preparation of the wall-hung gas boiler and the ERC controller

- Non-authorized structural changes to the wall-hung gas boiler

- Faulty supervision of machine parts that are subject to wear

- Repairs carried out unprofessionally

- Catastrophic events due to the effects of foreign bodies and force majeure

- The operating instructions and especially the safety instructions must be observed by all persons operating the wall-hung gas boiler Logamax.

- Additionally observe all accident preven-tion rules and regulations that apply at the installation site.

- The buyer must make sure that the operator is instructed in the operation and all safety-relevant aspects of the wall-hung gas boiler.

- The instructing party must establish and keep a protocol of the instructions carried out.

Basic instructions3

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3.3 Allowable users

3.3.1 Specialized personnel

‘Specialized personnel’ are persons: - who are familiar with the wall-hung gas boiler

installation based on their professional occupation and experience,

- who are familiar with the relevant official work-safety regulations, directives and generally recognized technical rules (for example VDE stipulations, DIN sheets) so that they can judge whether the relevant installation is in a work-safe condition.

Specialized personnel should be asked to give their objective opinion as seen from the viewpoint of safety on the job, unaffected by commercial or economic conditions.

3.3.2 Lay personnel

‘Lay persons’ are persons who are not a specialized professional. Lay persons may use the Buderus wall-hung gas boiler without limitation; however, they may not carry out any activities connected with the wall-hung gas boiler’s installation, ignition, maintenance or removal.

Product description 4



4 Product description

4.1 Functions of the ERC controllerThe ERC controller is suitable for controlling the room or outdoor temperatures of wall-hung gas boilers provided with UBA, modulating burner, and a heating circuit without mixer and for preparing hot water.The ERC controller has the following functions:� One-channel switching clock with week programme;

� Automatic summer/winter conversion (only possible if supplied with outdoor-temperature model AM 1.0);

� Hot-water preparation 30 minutes before and after the heating operation;

� Hot-water priority circuit;

� Holiday programme;

� Heating pause;

� Heating-period extension (party function);

� Frost-protection function;

� factory basic adjustments (standard or default).

In case of power failure, the time and day of the week remain stored for a certain period. All other adjustments have been permanently stored.

4.2 Intended use� Ask your specialized heating company to provide you

with extensive information on how to operate the installation.

The ERC controller has been designed as an entry, control and regulation unit mainly for use with Buderus wall-hung gas boilers for detached and terraced houses.The ERC controller can be used for two different applications:� Room-temperature control;

� Outdoor-temperature-dependent control.

J NOTE!The latter application requires the outdoor-temperature module AM 1.0 and an outdoor-temperature sensor.

4.3 Unprofessional use

A CAUTION!Only enter or change the operating valuesindicated in this operating manual. Other entries will change the control program-me of the heating installation and can lead to faulty operation.

Product description4

12




4.4 Operating elements, operating levelsAll functions and adjustment values are indicated or adjusted in the clear operating field.

4.4.1 First operating level

At the first operating level (fig. 1) there is a temperature rotating knob for adjusting the room temperature.If the mark on the temperature rotating knob points down towards the auto push-button, the wall-hung gas boiler installation will be in automatic heater mode in accord-ance with the adjusted programme.Using the push-button ‘- Auto +’, room-temperature changes of short duration can be adjusted in automatic mode (see “Provisional adjustment for short duration” on page 21). Such short-duration room-temperature adjust-ments will be later cancelled by the next switching time.The display shows the standard value of the current day of the week, the time and the measured room tempera-ture.

Fig. 1 first operating level

4.4.2 Second operating level

� Open the upper cover (fig. 2).The display shows the standard value of the current day of the week, the time and the measured room temperature.

� Turn the rotating knob.

The display will change and show consecutively the day of the week with the switching times and the target room-temperature values.

You can change the default in the adjustment and adjust another heating programme that corresponds to your wishes: see “Operating the basic functions” on page 16 .At the second operating level, adjustments are made by pressing keys or rotating the programme rotating knob.

Fig. 2 Second operating level

Temperature rotating knob

Key “- Auto +”

Set timeEnter day of the week

Enter holidayEnter switching point

Enter heating pauseEnter party time and temperature

Enter temperatures

programme rotating

Set mode and hot water

Delete switching point




4.4.3 Third operating level

The third operating level see “Third operating level” on page 13 can be accessed by opening the lower cover. Depending on the version, the following plug-in modules will be found there:1. On-line module OM 1.02. Outdoor-temperature module AM 1.03. Barometer module BM 1.04. Hygrometer module HM 1.0For operating see “Operating the plug-in modules” on page 29.

Fig. 3 Third operating level

On-line module

Outdoor-temperature module

Hygrometer module

Barometer module

Product description4

14




4.5 Default adjustmentIn the ERC controller a standard programme (‘factory programme’, fig. 4) has been installed. This programme will be active after its commission, when the big rotating knob points to AUTO and the indicator lamp ‘Auto’ is active.

Explanation: Each adjusted room temperature is specified as a target value of the listed times: for instance, as from Monday at 05:30 hrs the installation will heat to a room temperature of 21 °C, after which it will reduce the temperature to 19 °C as of 09.00 hrs, etc.Should the factory programme not correspond to your heating habits, you may adapt the heating programme to your wishes at any time.

4.6 Danger zones

AWARNING! There is a danger of scalding if the hot water is too hot. Always open the cold-water faucet first and then ad hot water as required.

Frost protection

J NOTE! If the wall-hung gas boiler is active, the frost protection is active.Before deactivating the wall-hung gas boiler installation using the operating switch on the wall-hung gas boiler, check whether frost is expected.

Fig. 4 Standard programme (‘factory programme’)

Day of the week

Time Room-temperature

Mon. - Fri. 5:30 21 °C

9:00 19 °C

17:00 21 °C

22:00 16 °C

Sat. and Sun.

7:00 21 °C

23:00 16 °CR

oom

tem

pera

ture

˚C

HoursMonday to FridaySaturday + Sunday




4.7 Technical dataElectrical dataSupply . . . . . . . . . . . . . . . .max. 12 V DC; max. 80 mASignal connection . . . . . . . . . . . . . via the supply cable,

. . . . . . . . . . . . . . . . . . . . . . . . . . . . max. 1 mm²Device protection . . . . . . . . . . . . . . IP 20 acc. IEC 529

Dimensions (w x h x d)ERC including installation plate. . . . 192 x 120 x 40 mm

Environmental conditionsAmbient temperature. . . . . . . . . . . 0 °C through +50 °CStorage temperature . . . . . . . . . .-25 °C through +70 °CEMC compatibility . . . . . . . . . . . acc. EN 50081-2: 1999

Operating the basic functions5

16




5 Operating the basic functions

5.1 CommissionOn commissioning the ERC controller, observe the extensive instructions in the operating manual:� for the wall-hung gas boiler;

� for the controller (these instructions).

J NOTE!Your professional heating specialist will provide you with extensive information concerning operation.

� Activate the heating-room emergency heating switch.

J NOTE!If a hot-water facility has been installed on your heating installation, then hot water will be heated with priority. When there’s no longer a demand for hot water, then the living area will be heated

Operating the basic functions 5



5.2 Adjusting the current day of the week and the time

The heating programme is based on the day of the week and the time. The heating installation must therefore be set to the current day of the week and the current time.

The following table indicates the abbreviations used for the days of the week:

Assume it is 16:30 hrs on a Monday. Then proceed to adjust as follows:� Open the cover (second operating level).

� Press the ‘Tag’ key (fig. 5) and keep it pressed.

� Turn the rotating knob until ‘MO’ for Monday is shown on the display.

� Release the ‘Tag’ key to store the day.

� Press the ‘Zeit’ key and keep it pressed.

� Turn the rotating knob until the correct time is shown on the display (e.g. 16:30).

� Release the ‘Zeit’ key. The time is stored.

J After a power failure, both day and time will blink.Once the blinking indication corresponds to the current day of the week and time, push the ‘Zeit’ button once.

If the blinking indication does not respond to the current day of the week and time, repeat the adjustment procedure.

Once you have carried out all operating steps and the temperature rotating knob is on ‘Auto’, the heating operation is started on the basis of the factory programme.

Fig. 5 Adjusting the day of the week and time

abbreviation meaning

MO Monday

DI Tuesday

MI Wednesday

DO Thursday

FR Friday

SA Saturday

SO Subday


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5.3 Selecting the operating modeUse the ‘heating’ key to adjust the wall-hung gas boiler installation to the following operating modes:An = winter mode (room and water heating activated)Aus = summer mode (only water heating activated)Auto = Automatic conversion between the summer/

winter modes. The heating installation automatically recognizes when the room-heating function can be deactivated (see “Adjusting the summer/winter conversion” on page 28).

J NOTE!The position ‘Auto’ is only possible if the controller has been provided with an outdoor temperature module AM 1.0 (Fig. 6) and if on the module AM 1.0 a selection has been made for heating operation with outdoor temperature guidance.

� Press the ‘heating’ key (fig. 7) and keep it pressed.

� Turn the rotor button until the desired adjustment (An, Aus, Auto) is shown on the display.

Fig. 6 Outdoor temperature module

Fig. 7 Adjusting heating An / Aus / Auto




5.4 Programming the heating switchpoints

The section “Default adjustment” on page 14 presents the standard programme and clarifies it. This programme can be tailored to your personal requirements.The programme is made up of several heating switch-points per day for all days of the week. These heating switchpoints can be recorded by fully arbitrary ‘switching points’.It is also possible to specify individual room tempera-tures; for this, see “Adjusting the target room-tempera-ture” on page 21.

5.4.1 Changing a switching point

For instance, from Saturday 07:00 hrs to Saturday 08:30 hrs� Open the cover.

� Turn the rotating knob (fig. 8) until the display shows ‘SA 07:00 21.0 °C’.

� Press the ‘Zeit’ button and keep it pressed. The time display will blink.

� Turn the rotating knob until the desired time (08:30) is displayed.

� Release the ‘Zeit’ button.

The value has been stored.After 10 seconds the standard display will automatically reappear. Fig. 8 Changing the switching point

5.4.2 Inserting a switching point at present time

For instance, Monday (MO)14:00 hrs 17.0 °C� Press the ‘INS’ key (fig. 9) and keep it pressed.

The temperature indication will blink.

� Turn the rotating knob until 17.0 °C is displayed.

� Release the ‘INS’ key.

The switching point has been stored and will be active at 14.00 hrs every Monday.

.

Fig. 9 Inserting a switching point at the present time


20




5.4.3 Inserting a switching point at any time

For instance, Tuesday (DI)13:10 22.0 °C.� Press the ‘INS’ key (fig. 10) and release it.

The displayed temperature will blink.

� Press the ‘Tag’ key and keep it pressed. The displayed day and temperature will blink.

� Turn the rotating knob until ‘Di’ is displayed.

� Release the ‘Tag’ button.

� Press the ‘Zeit’ button and keep it pressed. The displayed time and temperature will blink.

� Turn the rotating knob until 13:10 is displayed.

� Release the ‘Zeit’ button.

� Press the ‘Temp’ button and keep it pressed. The displayed temperature will blink.

� Turn the rotating knob until 22.0 is displayed.

� Release the ‘Temp’ button. The switching point has now been stored.

After 10 seconds, the standard display will automatically reappear.

Fig. 10 Inserting a switching point at any time

5.4.4 Deleting a switching point

� Use the rotating knob to select the switching point you would like to delete.

� Press the ‘C’ button (fig. 11) and keep it pressed until all numbers on the display have disappeared.

ACAUTION! If you release the ‘C’ button before all numbers have disappeared, the switching point will not have been deleted.

Fig. 11 Deleting a switching point




5.5 Adjusting the target room-temperature

You can choose between various possibilities for adjusting the target room-temperature:� Provisional adjustment for short duration;

� Changing the default adjustment for permanent adjustment.

5.5.1 Provisional adjustment for short duration

Changing the room temperature using the ‘-/Auto/+’ -keyThe temperature rotating knob must point to ‘Auto’. The indicator lamp ‘Auto’ will be active.Use the ‘-/Auto/+’ -key (fig. 12) to provisionally change the room temperature.� Press the ‘+’ or ‘-’ key.

The display will show the changed room temperature.

You can increase or reduce the room temperature by a maximum of 2.5 °C.The change will be cancelled when passing the next automatic switching point.

J NOTE! If all indicator lamps are off, the control will be in summer mode.

Manually adjusting the room temperature

J NOTE!Use the manual adjustment to deactivate automatic mode.

� Adjust the temperature rotating knob (fig. 13) to the desired room temperature (above 6 °C).

The indicator light ‘Man’ will become active. The wall-hung gas boiler is now carrying out its heating operation in winter mode (room and water heating) continuously using the adjusted room temperature.If you set the room temperature lower than 16 °C, operation will go down to night level. In addition to the ‘Man’ indicator lamp also the ‘Nacht’ indicator lamp will become active. The water heating will then be off.Back to auto mode:� Turn the temperature rotating knob to ‘Auto’.

Fig. 12 Changing the room temperature using the ‘-/Auto/+’ key

Fig. 13 Manually adjusting the room temperature


22




5.5.2 Changing the default adjustment for permanent adjustment

Auto modeThe room temperature will be automatically controlled in accordance with the factory programmes (see chapter “4.5 Default adjustment” on page 14 and fig. 14) or using a time programme entered by you.

Fig. 14 Default programme

Changing the room temperature of the default programmeFor instance Monday to Friday 05:30 hrs from 21 °C to 22.0 °C room temperature.� Open the cover.

� Turn the rotating knob (Fig. 15) until the display shows ‘MO 05:30 21.0’.

� Press the ‘Temp’ key and keep it pressed.The display temperature will blink.

� Turn the rotating knob until the desired temperature of 22 °C is indicated.

� Release the ‘Temp’ button. The value has been stored.

� Repeat these steps accordingly for Tuesdays to Fridays.

After approx. 10 seconds, the standard display will automatically reappear.

Fig. 15 Changing the room temperature

Roo

m te

mpe

ratu

re ˚

C

HoursMonday to FridaySaturday + Sunday




5.6 Adjusting the water temperature

5.6.1 Buderus wall-hung gas boiler with built-in hot-water tank

Using the ERC controller you can adjust the hot-water facility to the following operating modes:An = The hot water is continuously heated.

You will have hot water available at all times, even during low-operation periods.

Aus = Water is not heated.Auto = Hot water is prepared only in day mode.

In night mode and during the holiday programme, the hot-water facility is deactivated.

� Press the ‘faucet’ key (fig. 16) and keep it pressed.

� Turn the rotating knob until the desired adjustment is shown on the display.

The factory adjustment of the water temperature is 60 °C.

J NOTE!In the case of a built-in tank, the water temperature has been permanently adjusted.It is not possible to change it.

5.6.2 Buderus wall-hung gas boiler with separate hot-water tank

D LITERATURE!In the case of a separate tank or built-in direct water heater, the water temperature can be adjusted at the second level of the UBA auto-matic ignition device (see the documentation of the wall-hung gas boiler).

Fig. 16 Adjusting the water temperature


24




5.7 Resetting to the default valuesTo reactivate the standard programme:� Simultaneously press the ‘INS’ and ‘C’ keys (fig. 17)

and keep them pressed until all numbers have disappeared from the display.

Once the keys are released, all previously entered switching points will have been deleted.The factory programme will have been reactivated.

J NOTE!If you release the keys before all numbers have disappeared, the switching points will not have been deleted.

Fig. 17 Resetting to the default adjustments

��

Operating the special functions 6



6 Operating the special functions

6.1 Adjusting summer/winter time� Open the cover.

The display will show the day of the week, the current time and the actual room-temperature value.

� Press the ‘Zeit’ button (fig. 18) and keep it pressed.

� Turn the rotating knob clockwise or anticlockwise, depending on what you want to set: winter or summer time.

� Realise the further adjustments as listed in “Adjusting the current day of the week and the time” on page 17.

6.2 Holiday programme

6.2.1 Adjustment

During your holiday you might set the room temperature lower. Let’s assume you have 15 days of holiday: in this period the room temperature should be 10 °C day and night.

� Press the ‘Urlaub’ button (fig. 19) and keep it pressed.

� Use the rotating knob to set the number of holidays to 15.

The day of adjustment is regarded as the first day of the holiday.� Press the ‘Temp’ key and keep it pressed.

The default room temperature is 16 °C.

� Use the rotating knob to adjust the room temperature to the value that must be observed during your holiday, in this case 10 °C.

� Release the ‘Temp’ key. Your holiday and the room temperature have been stored.

If the warm-water preparation ‘WW-Auto’ is set, then in the holiday period no warm water will be prepared since a room temperature lower than 16 °C has been entered see “Adjusting the water temperature” on page 23.

6.2.2 Cancelling the holiday programme

� Press the ‘Urlaub’ key and keep it pressed.

� Use the rotating knob and continue to turn the button anticlockwise until ‘00’ is shown on the display.

� Release the ‘Urlaub’ button.

The automatic programme will be active again.

Fig. 18 Adjusting summer/winter time

Fig. 19 Adjusting the ‘holiday’ function

Operating the special functions6

26




6.3 Heating pause

6.3.1 Alignment

In order to save energy you can set the ‘heating pause’ if a low room temperature will be adequate for the next brief period, until the next switching point.

J NOTE!If the hot-water preparation has been adjusted to ‘Auto’, during the heating pause also the heating of hot water will be deactivated.

� Press the ‘Pause’ key (fig. 20) and keep it pressed.

� Turn the rotating knob until the desired time for the end of the pause is indicated, e.g. 15:30 hrs.

The display will show blinking time alternated by the ending time of the pause and the day-night conversion temperature of 16 °C.

6.3.2 Cancellation

If you want to prematurely terminate the heating pause:� Press the ‘Pause’ key (fig. 21) and keep it pressed.

� Turn the rotating knob anticlockwise, until the current time is displayed,

or� Keep the ‘C’ button pressed until all numbers on the

display have disappeared,

or� Briefly turn the temperature rotating knob away from

‘Auto’ and then return it to ‘Auto’.

Fig. 20 Terminating the heating pause

Fig. 21 Adjusting the heating pause

Operating the special functions 6



6.4 Party mode

6.4.1 Adjustment

Using the party function you can provisionally extend the day mode, e.g. up to 01:50 hrs.

J NOTE! You can set a provisional extension of the heating period. Once the extension period has ended. the system will automatically return to the previous programme.

� Press the ‘Party’ button (fig. 22) and keep it pressed.

� Turn the rotating knob until the desired end of the party is displayed, e.g. 01:50 hrs.

� Release the ‘Party’ button.

The display will show the blinking time alternated with the time when the party ends. The room temperature of the last switching point will be shown.

If you desire a different room temperature:� Press the ‘Temp’ key and use the rotating knob to

adjust the desired room temperature.

6.4.2 Termination

If you want to prematurely terminate the party mode:� Press the ‘Party’ key and keep it pressed.

� Turn the rotating knob anticlockwise until the current time is displayed,

or� Keep the ‘C’ key pressed until all numbers on the

display have disappeared,

or� Briefly turn the temperature button away from ‘Auto’

and then return it to ‘Auto’.

Fig. 22 Adjusting the party mode

Fig. 23 Terminating party mode

Operating the special functions6

28




6.5 Adjusting the summer/winter conversion

6.5.1 General

J NOTE!The summer/winter conversion is only possible if an AM 1.0 has been installed and adjusted to outdoor-temperature-driven heating operation.

The ERC controller takes into account the residual heat of the building and in case of outdoor-temperature fluctuations activates and deactivates the heater system after a certain delay.

Example for spring:In spring, when the building is still cold, the controller will not deactivate the wall-hung gas boiler until the outdoor temperature has been above the conversion tempera-ture for a certain time.

Example for autumn:In autumn when the building has still retained heat, the residual heat will be taken into account and the wall-hung gas boiler will not be deactivated until the outdoor temperature has been below the conversion temperature for some time.

6.5.2 Adjusting the automatic conversion

The factory adjustment for the summer/winter conversion temperature is 17 °C.Proceed as follows to change it:� Press the ‘heating’ key (fig. 24) and keep it pressed.

The display will show ‘auto’, the conversion temperature and the room temperature.

� Turn the rotating knob until the outdoor temperature is displayed below which your wall-hung gas boiler should heat, e.g. 20 °C.

� Release the ‘heating’ key.

The value has been stored.

Fig. 24 Adjusting the automatic summer/winter conversion

Operating the plug-in modules 7



7 Operating the plug-in modulesThe ERC controller may have been provided with or can be expanded with four plug-in modules:1. Outdoor-temperature module AM 1.02. On-line module OM 1.03. Barometer module BM 1.04. Hygrometer module HM 1.0

7.1 Outdoor-temperature module AM 1.0The outdoor-temperature module is required if you want to operate your wall-hung gas boiler using outdoor-temperature-driven heating operation. You have the following three different operating possibilities:� Room-temperature-driven heating operation;

� Outdoor-temperature-driven heating operation;

� Outdoor-temperature-driven heating operation with room-temperature activation.

The selection of these adjustments is made using the ‘Control’ key on the outdoor-temperature module.

7.1.1 Room-temperature-driven heating operation

In this position the outdoor-temperature module (fig. 25) serves only to indicate the outdoor temperature.

Fig. 25 AM 1.0: room-temperature-driven heating operation

7.1.2 Outdoor-temperature-driven heating opera-tion

Only select this operation mode if your house does not accommodate a suitable reference room for the room-temperature measurement, e.g. it is a multifamily house or you have floor heating.The right-hand large indication on the display (fig. 26) represents the room temperature of the room where the controller is located, e.g. heating-room temperature in the heating room rather than the living-room tempera-ture.

Fig. 26 AM 1.0: outdoor-temperature-driven heating operation

Operating the plug-in modules7

30




FunctionThe heating system’s water will not be heated further than necessary for the room temperature.� Lower outdoor temperature = higher heating

system’s water temperature

� Higher outdoor temperature = lower heating system’s water temperature or deactivation of the heating system.

If the room temperature is too low, it can be corrected using the temperature rotating knob using manual adjustment (see “Manually adjusting the room tempera-ture” on page 21).

If you want to remain in automatic mode (temperature rotating knob in ‘auto’ position) in order to correct the room temperature, you must change the individual switching points (see “Adjusting the target room-temper-ature” on page 21).

7.1.3 Outdoor-temperature-driven heating opera-tion with room-temperature activation

Select this operating mode if your house accommodates a suitable reference room for the room-temperature measurements; e.g. it is a single-family or multilevel house.

FunctionIn principal as in ‘outdoor-temperature-driven heating operation’. However, the room-temperature activation also registers the effects of such heat sources as incoming sunrays, lights, TV sets, etc.If the measured room temperature (fig. 27) deviates from the adjusted value, the controller will calculate a new heating temperature. This allows for an even more accurate determination of the heating-water tempera-ture.

A CAUTION!The heating-body valves in the reference room accommodating the controller device must have been fully opened.

Fig. 27 AM 1.0: outdoor-temperature-driven heating operation with room-temperature activation

Operating the plug-in modules 7



7.2 On-line module OM 1.0Using the on-line module (fig. 28) you can follow the wall-hung gas boiler operation from your living room.� Use the ‘Funktion’ key to select the indications.

� In the ‘Service’ position the operating and service codes are displayed. These indications are intended for the service activities carried out by the heating specialist.

Should your heating installation not function correctly, you can read out the error code and let your heating specialist know by telephone.

D LITERATURE!There is an error-code table in the service manual.

In the ‘Info’ position the wall-hung gas boiler-water temperature is shown.

J NOTE!The horizontal line (fig. 29) near ‘radiator icon’ or ‘warm water icon’ indicates whether it is the room or the hot-water heating that is active.

Fig. 28 OM 1.0: ‘Service’ position

Fig. 29 OM 1.0: ‘Info’ position

7.3 Hygrometer module HM 1.0The hygrometer module (fig. 30) is a display instrument and shows the relative air humidity in the living room as a percentage.

Fig. 30 Hygrometer module HM 1.0

Operating the plug-in modules7

32




7.4 Barometer module BM 1.0The barometer module (fig. 31) is a display instrument and shows the air pressure in millibars.

Fig. 31 Barometer module BM 1.0

Calibrating the sensors 8



8 Calibrating the sensors

8.1 FunctionYou can calibrate the displayed values against the values measured by the sensors.� Press the ‘Cal’ key using a pointed object

(e.g. a ballpoint pen) and keep the key pressed.

The display (fig. 32) will on the left-hand side always show the current measured value of the sensor and on the right-hand side the blinking value that you are adjusting.Press the ‘Cal’ key, release it briefly and press it once again to display in consecutive order the following sensor values (if the relevant module is present):� Room temperature;

� Temperature rotating knob;

� Outdoor temperature;

� Relative air humidity;

� Air pressure.

Fig. 32 Indicating and calibrating sensor values

8.2 Example of calibrating the room-temperature sensors

� Use a thermometer to measure the room tempera-ture at the spot where the ERC controller has been fastened.

� Press the ‘Cal’ key and keep it pressed.

On the left the actual measure value will appear (fig. 33) and on the right the blinking value that you want to adjust.� Turn the rotating knob until the temperature on the

display is the same as the room temperature you just measured.

� Release the ‘Cal’ key.

After 10 seconds, the standard value will automatically reappear. Calibrate the other values in the same manner.

Fig. 33 Calibrating the room temperature sensors

Roomtemperature

Temperature rotating knob

Outdoor temperature

Relative air humidity

Air pressure

Cal

Faults9

34




9 FaultsFaults are indicated by LED indicators on the ERC controller.

ACAUTION!Immediately report any fault to your professional heating specialist

.

Indication Cause

The LEDs ‘Man’ and ‘Auto’ are active alternately. No communication with the UBA automatic ignition device.

In the on-line module OM 1.0, four horizontal dashes appear.

Fault in the UBA automatic ignition device.

At the spot of the temperature value, dashes appear. Room-temperature sensor faulty.

At the spot of the outdoor temperature, four horizontal dashes appear in the outdoor-temperature module AM 1.0.

Outdoor-temperature sensor faulty.

Table 1 Faults and their meaning

Operating and display elements 10



10 Operating and display elements

Operating level 1: For short-term temperature changes

Operating level 2: For exact adjustments of the heating programme

Operating level 3: For recording the operating modes in installations with an outdoor-temperature sensor ANDfor reading out the display of the plug-in module

36




Notes

Index 11



11 Index

Aadjusting party mode . . . . . . . . . . . . . . . . . . . 27adjusting the automatic conversion . . . . . . . . 28adjusting the target room-temperature . . . . . . 21adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . 25alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26application instructions . . . . . . . . . . . . . . . . . . . 7automatic mode . . . . . . . . . . . . . . . . . . . . 12, 22

Bbasic functions . . . . . . . . . . . . . . . . . . . . . . . . 16

Ccancelling the heating pause . . . . . . . . . . . . . 26cancelling the holiday programme . . . . . . . . . 25changing a switching point . . . . . . . . . . . . . . . 19changing the room temperature . . . . . . . . . . . 21comfortable room temperature . . . . . . . . . . . . 30commission . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Ddanger zones . . . . . . . . . . . . . . . . . . . . . . . . . 14deleting a switching point . . . . . . . . . . . . . . . . 20

Ffactory programme . . . . . . . . . . . . . . . . . . . . . 14frost protection . . . . . . . . . . . . . . . . . . . . . . . . 14

Hheating pause . . . . . . . . . . . . . . . . . . . . . . . . . 26higher outdoor temperature . . . . . . . . . . . . . . 30holiday programme . . . . . . . . . . . . . . . . . . . . . 25hot water heated with priority . . . . . . . . . . . . . 16

Iinserting a switching point . . . . . . . . . . . . . . . . 20

Llower outdoor temperature . . . . . . . . . . . . . . . 30

Mmanually adjusting the room temperature . . . 21

Ooutdoor-temperature module am 1.0 . . . . . . . 29

Pparty mode . . . . . . . . . . . . . . . . . . . . . . . . . . .27procedure if gas can be smelled . . . . . . . . . . . .6

Rresetting to the default values . . . . . . . . . . . . .24

Ssafety instructions . . . . . . . . . . . . . . . . . . . . . . .6standard programme . . . . . . . . . . . . . . . . . . . .14suitable reference room . . . . . . . . . . . . . . . . .29summer/winter conversion . . . . . . . . . . . . . . .28summer/winter time . . . . . . . . . . . . . . . . . . . . .25

Ttechnical data . . . . . . . . . . . . . . . . . . . . . . . . .15terminating party mode . . . . . . . . . . . . . . . . . .27tips concerning economical heating . . . . . . . . .7

Wwall-hung gas boiler with built-in hot-water tank . . . . . . . . . . . . . . . . . . .23wall-hung gas boiler with separate hot-water tank . . . . . . . . . . . . . . . . .23

38




Notes

04/0004/00

Notes



Buderus is always near.High-quality heating technology requires professional installation and maintenance. Buderus therefore supplies the complete programme exclusively via professional heating specialists. Ask for Buderus heating technology.Or contact one of our 45 establishments.

Buderus Heiztechnik GmbH, 35573 Wetzlarhttp://www.heiztechnik.buderus.de

e-mail: [email protected]

Establishment City Address Telephone Telefax

Aachen 52080 Aachen Hergelsbendenstraße 30 (02 41) 9 68 24 - 0 (02 41) 9 68 24 - 99Augsburg 86156 Augsburg Werner-Heisenberg-Str. 1 (08 21) 4 44 81 - 0 (08 21) 4 44 81 - 50Berlin 15831 Berlin Am Lückefeld (0 30) 7 54 88 - 0 (0 30) 7 54 88 - 160Bielefeld 33605 Bielefeld Reichenberger Straße 39 (05 21) 20 94 - 0 (05 21) 20 94 - 228Bremen 28816 Stuhr Industriestraße 22 (04 21) 89 91 - 0 (04 21) 89 91 - 235Dortmund 44319 Dortmund Zeche-Norm-Straße 28 (02 31) 92 72 - 0 (02 31) 92 72 - 280Dresden 01458 Ottendorf-Okrilla Jakobsdorfer Straße 4 – 6 (03 52 05) 55 - 0 (03 52 05) 55 - 222Düsseldorf 40231 Düsseldorf Höher Weg 268 (02 11) 7 38 37 - 0 (02 11) 7 38 37 - 21Erfurt 99195 Mittelhausen Erfurter Straße 57a (03 61) 7 79 50 - 0 (03 61) 73 54 45Essen 45307 Essen Eckenbergstraße 8 (02 01) 5 61 - 0 (02 01) 5 61 - 279Esslingen 73730 Esslingen Wolf-Hirth-Straße 8 (07 11) 93 14 - 5 (07 11) 93 14 - 669Frankfurt/Main 63110 Rodgau Hermann-Staudinger-Str. 2 (0 61 06) 8 43 - 0 (0 61 06) 8 43 - 203Freiburg 79108 Freiburg Stübeweg 47 (07 61) 5 10 05 - 0 (07 61) 5 10 05 - 45Gießen 35394 Gießen Rödgener Straße 47 (06 41) 4 04 - 0 (06 41) 4 04 - 221Goslar 38644 Goslar Magdeburger Kamp 7 (0 53 21) 5 50 - 0 (0 53 21) 5 50 - 114Hamburg 21035 Hamburg Wilhelm-Iwan-Ring 15 (0 40) 7 34 17 - 0 (0 40) 7 34 17 - 267Hannover 30916 Isernhagen Stahlstraße 1 (05 11) 77 03 - 0 (05 11) 77 03 - 242Karlsruhe 76185 Karlsruhe Hardeckstraße 1 (07 21) 9 50 85 - 0 (07 21) 9 50 85 - 33Kassel 34134 Kassel Glockenbruchweg 113 (05 61) 94 08 - 0 (05 61) 94 08 - 106Kempten 87437 Kempten Heisinger Straße 21 (08 31) 5 75 26 - 0 (08 31) 5 75 26 - 50Kiel 24109 Kiel-Melsdorf Am Ihlberg (Gewerbegebiet) (04 31) 6 96 95 - 0 (04 31) 6 96 95 - 95Koblenz 56220 Bassenheim Am Gülser Weg 15 – 17 (0 26 25) 9 31 - 0 (0 26 25) 9 31 - 224Köln 50858 Köln-Marsdorf Toyota-Allee 97 (0 22 34) 92 01 - 0 (0 22 34) 92 01 - 237Kulmbach 95326 Kulmbach Aufeld 2 (0 92 21) 9 43 - 0 (0 92 21) 9 43 - 292Leipzig 04420 Makranstädt Handelsstraße 22 (03 41) 9 45 13 - 00 (03 41) 9 42 00 - 89Ludwigshafen 67069 Ludwigshafen Kreuzholzstraße 11 (06 21) 66 06 - 0 (06 21) 66 06 - 107Magdeburg 39116 Magdeburg Sudenburger Wuhne 63 (03 91) 60 86 - 0 (03 91) 60 86 - 215Mainz 55129 Mainz Carl-Zeiss-Straße 16 (0 61 31) 92 25 - 0 (0 61 31) 92 25 - 92Meschede 59872 Meschede Zum Rohland 1 (02 91) 54 91 - 0 (02 91) 66 98München 81379 München Boschetsrieder Straße 80 (0 89) 7 80 01 - 0 (0 89) 7 80 01 - 258Münster/Westf. 48159 Münster Haus Uhlenkotten 10 (02 51) 7 80 06 - 0 (02 51) 7 80 06 - 121Neubrandenburg 17034 Neubrandenburg Feldmark 9 (03 95) 45 34 - 0 (03 95) 4 22 87 32Neu-Ulm 89231 Neu-Ulm Böttgerstraße 6 (07 31) 7 07 90 - 0 (07 31) 7 07 90 - 92Nürnberg 90425 Nürnberg Kilianstraße 112 (09 11) 36 02 - 0 (09 11) 36 02 - 274Osnabrück 49078 Osnabrück Am Schürholz 4 (05 41) 94 61 - 0 (05 41) 94 61 - 222Regensburg 93092 Barbing Von-Miller-Straße 16 (0 94 01) 8 88 - 0 (0 94 01) 8 88 - 92Rostock 18182 Bentwisch Hansestraße 5 (03 81) 60 96 90 (03 81) 6 86 51 70Schwenningen 78056 Villingen-Schwenningen Albertistraße 15 (0 77 20) 69 14 - 0 (0 77 20) 69 14 - 31Schwerin 19075 Pampow Fährweg 10 (0 38 65) 78 03 - 0 (0 38 65) 32 62Saarbrücken 66130 Saarbrücken Kurt-Schumacher-Straße 38 (06 81) 8 83 38 - 0 (06 81) 8 83 38 - 33Trier 54343 Föhren Europaallee, Postfach 11 64 (0 65 02) 9 34 - 0 (0 65 02) 9 34 - 151Velten 16727 Velten Berliner Straße 1 (0 33 04) 3 77 - 0 (0 33 04) 3 77 - 199Wesel 46485 Wesel Am Schornacker 119 (02 81) 9 52 51 - 0 (02 81) 9 52 51 - 20Würzburg 97228 Rottendorf Edekastraße 8 (0 93 02) 9 04 - 0 (0 93 02) 9 04 - 111Zwickau 08129 Crossen Berthelsdorfer Straße 12 (03 75) 44 10 - 0 (03 75) 47 59 96

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