REMEHA 12v Service manual

Installation &

Service Manual

Remeha Avanta Range

12v I 18v I 24v

Remeha Avanta

Benchmark places responsibilities on both manufacturers and installers. The purpose is to ensure that customers are provided with the correct equipment for their needs, that it is installed, commissioned and serviced in accordance with the manufacturer’s instructions by competent persons and that it meets the requirements of the appropriate Building Regulations.

The Benchmark Checklist can be used to demonstrate compliance with Building Regulations and should be provided to the customer for future reference. Installers are required to carry out installation, commissioning and servicing work in accordance with the Benchmark Code of Practice which is available from the Heating and Hotwater Industry Council who manage and promote the Scheme.

Visit www.centralheating.co.uk for more information.

CONTENTS

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1 SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1 General safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2 Safety during assembly and installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.2 Mounting the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.2.1 Installation / maintenance clearance requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.2.2 Dimensions and connection points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.2.3 Mounting the Remeha Avanta . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.3 Water-side connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.3.1 Water flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.3.2

2.3.3

2.3.4

2.3.5

2.3.6

2.3.7

2.3.8

2.3.9

System Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Pressure loss of the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Open-Vented System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Sealed systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Additional guidelines for the domestic and CH water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Water treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Safety valve discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Draining Provision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.3.10 Connecting the ‘CH return’ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.3.11 Connecting ‘CH flow’ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.3.12 Connecting condensate drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.4 Gas-side connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.4.1 Additional guidelines for gas connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.4.2 Adjusting boiler to other gas-type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.4.3 Connecting the gas supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.5 Flue terminal and air supply connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.5.1 Flue terminal positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.5.2 Room sealed flue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.5.3 Connecting the flue terminal and air supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.6 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.6.1 The control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.7 Connecting external controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.7.5 Connecting an outside temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.7.6 Connecting the DHW sensor/thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.7.7 Connecting a three-way valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.7.8 Connecting a frost thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.7.9 Connecting an external interlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2

2.7.11 Connecting a PC/PDA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.8 Connecting an external pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.9 Wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

2.10 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

2.10.1

2.10.2

2.10.3

2.10.4

Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Additional guidelines for commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Putting the boiler into operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Normal start-up procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

2.10.5 Error during the start-up procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

2.10.6 Read out settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

2.10.7 Adjust the boiler according to the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

2.10.10 Restore factory settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

2.11 Putting the boiler out of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

2.11.1 Boiler with frost protection, during longer periods of non-use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3.1 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

3.1.2 Checking the condensate siphon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

3.1.3 Checking the ignition electrode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

3.1.4 Checking the combustion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

3.2 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

4 ERRORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4.2 Error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4.3 Control stop or lock-out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

4.4 Error code memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

4.4.1 Error read outs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

5 SERVICE PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

5.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

6 EC DECLARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

7 REGULATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

7.1 EC regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

7.2 Remeha factory test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

7.3 Additional guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

8 TECHNICAL SPECIFICATIONS and working principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

8.1 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

8.2 The boiler components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

8.3 Working principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

8.3.1

8.3.2

8.3.3

8.3.4

8.3.5

Regulating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Advanced boiler control (‘abc®’-control) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Regulating the water temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Low flow / water protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

High Limit temperature protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

9 EFFICIENCY DATA AND GAS EFFICIENCY LABELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

9.1 Annual efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

9.2 Water-side efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

3

INTRODUCTION

fig. 01 Remeha Avanta

Remeha Avanta

The Remeha Avanta is a series of wall mounted high-efficiency fully condensing central heating boilers, for open vented systems

These technical instructions contain useful and important information for the correct installation, operation and maintenance of the Remeha Avanta boiler.



Read these instructions carefully before putting the boiler into operation, familiarise yourself with their control functions and operation, strictly observing the instructions given. Failure to do so may invalidate warranty or prevent the boiler from operating correctly.

The installation, commissioning, Inspection and servicing of the boiler must be carried out by a competent registered Engineer who holds valid ACS certification and in accordance with current gas safety (installation and use) regulations, the building regulations and all other relevant codes of practice.

All electrical work must be carried out by a competent Engineer and to be installed in accordance with the current IEE regulations.

59970LTGBW7H046



On commissioning the certificate in the Benchmark Checklist within the Installation + Service manual must be completed and left on site with a copy send on to Broag Ltd for registration purposes.

If you have any questions, require an engineer to call on site, or if you need more information about specific subjects relating to this boiler, or it's installation please do not hesitate to contact our technical help line 0118 978 3434.



When contacting Broag with a problem on the boiler please have available the boiler type, Serial No (located on the bottom of the casing), and the symptoms or fault code (the fault code is a series of flashing red digits in the display panel).

The data published in these technical instructions is based on the latest information (at date of publication) and may be subject to revisions.

We reserve the right to continuous development in both design and manufacture, therefore any changes to the materials or technology employed may not be retrospective nor may we be obliged to adjust earlier supplies accordingly.

4

1 SAFETY

5

The following pictograms are used in this Installation and Service manual to specifically draw certain points to your attention:

Tip  Useful tip or practical advice.

Indication

Warning 

 Important instruction in carrying out a particular operation.

 Possible danger of personal injury or material damage to the regulator,

Danger environment.

 Serious personal injury can occur because of risk of electric shocks.

1.2 Safety during assembly and installation

Observe the appropriate safety measures, as given in these instructions.



Can you smell gas? What to do:

• do not smoke and do not create any flame or sparks;

• do not use any electric switches;

• turn off the gas tap;

• open windows and doors;

• trace possible leaks and seal them.

Warning! If the leak is before the gas meter, alert your gas supplier, TRANSCO, tel. 0800 111 999.



Can you smell smoke or flue gasses? What to do:

• isolate power supply

• open windows and doors

• trace possible leaks and seal them.

maintenance

Under the Gas Safety (Installation & Use) Regulations 1998, the Remeha Avanta, in common with all gas appliances, must be installed by a competent person in accordance with that regulation.

Statutory regulations, in any country, cannot be overridden by any of the notes or instructions from the manufacturer.

Compliance with National Standards does not provide any degree of immunity from legal obligations. In the UK, the installation must be in accordance with the national and local norms and requirements.

6

Remeha Avanta

For any issues or circumstances not addressed within these instructions, please call our After Sales Department 0118

9743070

Remeha Avanta 12v - PIN: 0063BQ3009



Gas Council numbers:

Remeha Avanta 12v: 41-288-09



Classification type for evacuation of the combustion products; according EN 483: see par. 8.1.

Health and safety information

• The Avanta system is below the maximum lift weight for one person, however please ensure all necessary care is taken when lifting the boiler on to the wall mounting bracket.

• All sealants and gaskets are free from harmful products.

On first firing the boiler, a smell of these products may be present and should cease after a short period.

2 INSTALLATION

fig. 02 Scope of delivery

The standard delivery of the Remeha Avanta boiler includes:

- Boiler + mounting bracket

- Installation and Service manual, Quick reference card and

Mounting Template

- Warranty Leaflet (The terms and conditions of the warranty are included in the warranty leaflet, on installation of the boiler please fill in the registration card and return to Broag-

Remeha)

- Gas cock with gasket + 90° gas pipe ( 22 mm)

- nylon plugs and screws for fixing mounting plate

- olives and nuts

- spacers

59970.LT.GB.W7H.006

This Installation and Service manual deals with the standard supplied boiler only. For the installation or assembly of any optional accessories supplied with the boiler, such as stand off frame, pipe work kits, cover plate, control kits, etc, please refer to the Assembly Instructions supplied with these accessories.

2.2 Mounting the boiler

Packed in the box with the Remeha Avanta box is this Installation and Service manual. Read instructions and remarks carefully. This section includes the guidelines and instructions for the connection of gas, water, electricity, safety devices, the regulator, control unit, flue discharge and air supply.

2.2.1 Installation / maintenance clearance requirements

The gas connection is located on the bottom of the boiler whilst the water connections, air inlet and flue gas outlet are located on the top of the boiler. The boiler is supplied as standard with gas pipe work tails.

For installation, servicing and inspection min. 600 mm in front of the boiler is required. If this free space is obtained by opening a door or removing a panel, the boiler may be installed for instance in a closed cupboard. All servicing / inspection / repairs are made from the front of the boiler.

For ease of installation we recommend clearances of 0.5 cm at the side so that the unit is easy to open, with a free space of 25 cm under the appliance and 25 cm above the appliance, as the minimum requirement.

However once installed, it is possible to reduce these clearances to 22 cm at the top, and 25 cm at the bottom provided the boiler front panel can be removed and the isolating valves are easily accessible without the use of tools”

7

400

Remeha Avanta



Clearances shown are for ease of installation – once fitted it is possible to enclose the boiler in a cupboard with 25mm clearances around the casing provided a door is included to allow the front cover to be removed completely for maintenance and allowance is made to access the gas valve and flow / return connections. min.

250

600 min.

250

290 min.

1000 fig. 03 Clearance requirements

160

400

317 50

59970LTGBW7H047

2.2.2 Dimensions and connection points.

 Return connection Ø 22 mm

 Flow connection Ø 22 mm

 Gas connection Ø 22 mm

 Combustion air inlet Ø 100 mm (concentric)

 Flue duct Ø 60 mm (concentric)

 Condensate drain connection ¾”

(standard overflow pipe size)



• Based on the guidelines and the required installation space, determine where to mount the Remeha Avanta.

• In determining the boiler position, consider carefully the flue outlet position and any pluming consequences.

85

206 fig. 04 Dimensions and connection points of the Remeha

Avanta

59970.LT.GB.W7H.001

8

fig. 05 Mounting the Avanta

ø8 mm

2x

2.2.3 Mounting the Remeha Avanta

• Remove template from the box. mounting bracket and flue outlet.

• Drill the (Ø 8 mm) holes.

• Fit the (Ø 8 mm) plugs.

• Core drill the (Ø 125 mm) hole for the flue outlet

• Fit (Ø 6 mm) screws into the plugs.

• Remove boiler from the box and mount on bracket.



• The boiler should be mounted on a suitable vertical wall

which is able to support the weight of the boiler.

• The boiler should be mounted in a room which, even

during severe cold weather, remains frost-free, or frost

protection controls MUST be fitted.

• If the boiler is to be installed in a timber framed building,

please refer to British Gas publication: ‘Guide for Gas

Installations in Timber frame Housing’, reference DM2.



• Make sure the boiler and any open connections are

protected from building etc. dust during the installation.

• There must be a 3 amp fused switched spur within 1 m of

• Provision must be made for the condensate discharge.

The central heating system should not require a bypass, unless all radiators are fitted with TRV’s or when the system controls could allow the boiler and pump to operate when there is no flow. Where a bypass has to be fitted, the bypass must be placed at least 1.5 metres away from the boiler.

The ‘abc ® ’ control also monitors the temperature difference across the flow and return connections and the rate of temperature rise and will automatically regulate the boiler output to ensure that it remains operational for as long as possible without the need to ‘lock out’ requiring a manual reset.

59970.LT.GB.W7H.002

The system pump must be wired directly to the boiler terminal strip and be capable of providing the nominal flow at design conditions against the combined resistance of the boiler and system.

The minimum flow rate is 1.05 m 3 /h (0.29 l/s) at full load and

15°C differential across flow and return. To operate at dT =

11°C the flow rate must be 1.37 m 3 /h (0.38 l/s)

Higher resistance systems may require a higher duty pump.

The maximum power consumption of the pump may not exceed 150 W /1.5 amps.

The connection of the pump is described in par. 2.8

9

Remeha Avanta

Pressure Loss Graph

700

600

500

400

300

200

100

0.5 0.6 0.7 0.8 0.9

1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9

2

Waterflow [m 3 /h] Recommended T 11 o

C

T max. 20 o

C fig. 06 Pressure loss graph

59970.LT.GB.W7H.003

2.3.3 Pressure loss of the boiler

The feed and expansion tank must be situated at a minimum height of 1 metre and a maximum height of 30 metres above the boiler to provide the correct operating head pressure.

The cold feed must be at least 15 mm and the open vent must be at least 22 mm. The pipes must rise continuously from the system. The heating vent must be at least 450 mm above the water level in the feed and expansion cistern.

The pump should be fitted on the flow pipe from the boiler and have isolating valves each side.

Min. 450 mm

Feed and exansion cistern

If the Avanta is installed on a sealed system, an appropriately sized expansion vessel and a safety valve MUST be installed close to the inlet side of the pump. A mains filling loop MUST be installed close to the outlet side of the system pump, along with automatic air vents positioned in the system pipe work to ensure adequate system venting during filling and operation.

An adequate pressure gauge should be fitted in a position where it can be seen during filling of the system.

All in accordance with the current issue of the relevant British

Standards.

2.3.6 Additional guidelines for the domestic and CH water the boiler to the central heating system in accordance with

BS 7593 (1992).

Heating vent

Min. 22 mm

Static head

Min. 1 m

Cold feed

Min. 15 mm

Flow

Max. 150 mm



• The temperature of the central heating pipes and the

radiators can rise to 95°C.

• Use untreated tap water only to fill the CH system.

• The pH value of the system water must be between 6 and 9

• In case inhibitors are being used, please follow the

instructions given in, see par. 2.3.7.

Return

fig. 07 Open-Vented system

59970.LT.GB.W7H.004

10

11

If used correctly water treatment can improve the boilers efficiency and increase the anticipated life expectancy of the boiler. For further information a special document “Quality requirements CH water” is available from Broag.

As most systems contain a variety of metals, it is considered good practice to provide some form of water treatment in order to prevent or reduce the following:

• Formation of scale and sludge

• Chemical changes in the untreated system water



All scale deposits however small will reduce the efficiency of the boiler and should be prevented.

Suitable chemicals and their use should be discussed with a specialist water treatment company prior to carrying out any work (environmental aspects, health aspects). The specification of the system and manufacturers recommendations must be taken into account, along with the age and condition of the system. New systems should be flushed thoroughly to

BS 7593(1992) to remove all traces of flux, debris, grease and metal swarf generated during installation. Care to be taken with old systems to ensure any black metallic iron oxide sludge and other corrosive residues are removed, again by power flushing, ensuring that the system is drained completely from all low points.



Please ensure that the new boiler plant is not in circuit when the flushing takes place, especially if cleansing chemicals are used to assist the process.

It is important to check the inhibitor concentration after installation, system modifications, filling the system and every service in accordance with these instructions.

For the correct dosage and the suitability of inhibitors for use with our boilers and for further information on water treatment or system cleaning we advise direct contact with either of the following companies:

‘F1

®

’ manufactured by: or: Sentinal ‘X100

®

’ manufactured by:

Fernox, Cookson Electronics Sentinel Performance Solutions

Forsyth Road The Heath Business & Technical Park

Surrey GU21 5RZ WA7 4QX

Tel No: 01483 793200 Tel No: 0800 389 4670

Fax No: 01483 793201 Fax No: 0800 389 4677

Email: [email protected] Email: [email protected]

Web site: www.fernox.com Web site: www.sentinel-solutions.net

Remeha Avanta

A pressure relief safety valve is not needed for Open-Vented systems.

Drain points must be provided at all the low points of the system to ensure that the entire system can be completely drained. The boiler is provided with a drain in the return pipe.

2.3.10 Connecting the ‘CH return’

• Remove the dust cap from the ‘CH return’ connection  at the top of the boiler.

• Fit the return pipe to 22 mm Ø compression fitting.

fig. 08 Connecting CH return

59970.LT.GB.W7H.005

2.3.11 Connecting ‘CH flow’

• Remove the dust cap from the ‘CH flow’ connection  at the top of the boiler.

• Fit the flow pipe to the 22 mm Ø compression fitting.

fig. 09 Connecting CH flow

59970.LT.GB.W7H.007

12

fig. 10 Connecting condensate drain

59970.LT.GB.W7H.034

2.3.12 Connecting condensate drain

•  to a suitable waste water drain point using acid resisting pipe work (i.e. - ¾” overflow). To enable the siphon in the boiler to be removed

/ serviced, the connection should not be a permanent one

(i.e. “push fit” system or a “tundish” immediately below the boiler).

an internal vertical soil pipe using a tundish (air break) c/w a min 75 mm water seal trap.

this is done by realizing the shortest possible route, and increase the diameter to at least 1¼” or insulate it with weather resistant insulation.

mum horizontal length of 5 m.



• If connecting into an internal discharge branch (i.e. sink

waste etc) the connection must be down stream of the

existing waste trap.

• Fill the boiler siphon with water before operation, to prevent

flue gasses discharging into the room.

• The condensate drain must be connected in accordance

with current regulations.

2.4.1 Additional guidelines for gas connections



Before installation, check that the gas meter has sufficient capacity for the demand. Remember to consider the consumption of all household appliances.

2.4.2 Adjusting boiler to other gas-type

The Avanta boiler is suitable for both natural gas and propane firing. For propane a kit with restrictor is required.

The boiler is supplied as standard set for natural gas (G20), therefore the following procedure must be carried out

BEFORE the boilers are fired and commissioned for the first time on propane:

Fit restrictor (not included with boiler)

Adjust the fan speed (see par. 2.10.8) and

Adjust the gas/air ratio (see par. 2.10.3).

13

fig. 11 Connecting gas supply

Remeha Avanta

2.4.3 Connecting the gas supply isolation valve.

•  at the bottom of the boiler.

tail supplied).



• Make sure there is no dirt in the gas pipe.

• Make sure that there is sufficient gas pressure available

(at full load > 17 mbar).

• Preferably install a gas filter in the gas pipe to protect the

boiler.

• The gas supply must be connected, tested for soundness

and purged by a qualified Engineer and in accordance with

BS6891.

59970.LT.GB.W7H.035

2.5 Flue terminal and air supply connections

The Remeha Avanta is only suitable for room sealed operation with a standard concentric connection 60/100 mm Ø or the optional 80/125 mm Ø connection.

Detailed recommendations for air supply and flue terminals are given in BS 5440.



It should not be necessary to provide compartment ventilation when the boiler is used with a standard concentric flue.

2.5.1 Flue terminal positions

The flue terminal must be located with care to ensure that the products of combustion are dispersed properly in all weather conditions and cause minimum nuisance to the building user or any adjacent buildings. If the terminal is positioned less than 2 m above the ground, balcony, or flat roof where access by persons is possible a suitable guard must be employed.



The boiler will produce a water vapour plume during normal operation Positions for the Remeha Avanta are shown in the figure and table 01. The principle of the 1:1 gas valve ensures

the Avanta range is able to deliver it’s full output at inlet pressure down to 17 mbar. However if dynamic pressure below 19 mbar are experienced ensure this is adequate for ALL other gas appliances in the property.

14

A

F

G

P

S

600 mm

S

B

A

H

G

C

600 mm

2000 mm

D,E

No flue must penetrate area within dotted lines round roof light

J

J

L

K,N

M fig. 12 Flue terminal positions

LT.AL.W7H.000.020

Dimensions Terminal location

A

B

C

M

N

P

J

K

L

R

S

D

E

F

G

H

Directly below an opening, air brick, opening window, etc.

Above an opening, air brick, opening window, etc.

Horizontally to an opening, air brick, opening window, etc.

Below a gutter or sanitary pipe work

Below the eaves

Below a balcony or carport roof

Above ground, roof or balcony level

From vertical drain/soil pipe work

From an internal or external corner

From a surface or boundary facing the terminal

Vertically from a terminal on same wall

Horizontally from a terminal on same wall

From a terminal facing the terminal

From an opening in a carport (e.g. door, window) into the building

From a vertical structure on the roof

Above an intersection with the roof table 01 Minimum distances to terminal

Minimum distance (in mm) to terminal (room sealed)

300

300

300

75

200

200

300

150

300

1500

1500

300

1200

1200 n/a

300

15

Remeha Avanta

L

VRS roof mounted room sealed terminal

L

80/125 or 60/100

59970.LT.GB.W7H.008 +

See table 02 for the maximum pipe length of flue ducts and air supply pipes for this ‘room sealed’ application.

It is not necessary to provide combustion air to the room or internal space in which the boiler is installed.

Diameter in mm Ø

Maximum length ‘L’ allowed [m]

Eq. Length of 90° elbow

M&G material

60/100 80/125

8 34

1.4

Eq. Length of 45° elbow

LT W6H 000 031

0.65

59970.LT.GB.W7H.009

2

ø125 mm min. 275 mm

1

LT W6H 000 032 table 02 Maximum pipe lengths for fl ue duct and air supply in room sealed application



For flue installations not covered by this booklet, please contact our technical help line 0118 978 3434.

2.5.3 Connecting the flue terminal and air supply

– taking note of the cutting instructions supplied with it plate at the exit end and slide the terminal through the wall until the closure plate is clear of the outer edge of the wall

– pull back the terminal till the closure plate is flush then fit inner wall closure to secure.



• All connections must be airtight and waterproof.

• Horizontal extension sections should slope towards the

boiler (at least 3 cm per metre).

1

2 fig. 13 Connecting flue terminal and air supply

59970LTGBW7H010

16

230 V adjacent to the boiler.

• The switch unit must always be accessible.



When the switch spur is on the following components of this appliance can be live (230 V):

• electrical connection gas combination block;

• most parts of the control unit;

• ignition transformer;

• X1, X2, X4, X5, X6 and X7 terminal strip;

• 230 V supply cable connection.

fig. 14 Electrical components with live 230 V fig. 15 The control unit

59970LTGBW7H011

LTALW7H000023

2.6.1 The control unit

The Remeha Avanta has an electronic regulation and control unit with an integrated ionisation flame detector. The heart of the boiler control unit is a microprocessor, the ‘abc ®’ , which controls and protects the boiler.

The maximum rated input of the boiler is 150 W. The boiler is fully pre-wired internally, all external connections can be made using the terminal strips X5 - X7 - X9 and 230 V input (X2 terminal). See the diagram for the position of the connectors and fuse (F2) on the control unit.

The most important properties of the control unit are summarized in table 03.

Manufacturer

Supply voltage

Pre-purge time

Post-purge time

Ignition time

Safety time

Anti-cycling time

Fuse value F1 (230 V)

DC fan

Sit Controls

230 V – 1ph – 50 Hz

3 s

5 s

2.5 s

5 s

3 till 10 min.

2 AT

24 VDC table 03 Control unit characteristics



Any loads other than those specified above are only allowed if an isolating transformer is used.

17

fig. 16 Connecting external controls

59970LTGBW7H012

18

Remeha Avanta

The output of the Remeha Avanta can be controlled in the following ways:

On/off control – volt free switching - The boilers internal control will modulate the output to achieve the flow temperature set point of the boiler. This contact is on the X9 terminal strip (low voltage only).

On/off control – 230 V switching - The boilers internal control will modulate the output to achieve the flow temperature set point of the boiler. This contact is on the X2 terminal strip

(230 VAC only).

Modulated control – Open Therm - The external controls will modulate the boiler’s output to achieve the flow temperature determined by the modulating regulator. This contact is on the

X9 terminal strip (low voltage only).

Modulated control – Open Therm in combination with an externally mounted simple 230 V switching time clock -

The boiler will provide room compensated heating and time control over CH and DHW (System boiler).



• All connections on terminal X1, X2, X4, X5, X6 and X7 are

• All connections on terminal X9 are low voltage only.

release plastic clip below display and remove the front casing.

boiler, fit a cable gland and feed the cables through.

the diagrams.



• Isolate power supply at the fused spur before carrying out

any work on the boiler controls.

Terminal

Block X6

L

N

230v - 3 Amp

Power Supply

E

Terminal

Block X7

1

2

3

Common Alarm

(Closes on alarm)

X2

Boiler Run or

X5 external pump relay

(Closes on run)

X6

X7

Terminal

Block X5

1

2

3

X9

Neutral

Open valve to DHW (230v)

Open valve to HTG (230v)

For external DHW priority diverting valve on System boiler when used in conjunction with

"Open Therm" compensation

Exist links

Terminal

Block X9

1

2

3

4

5

6

7

8

Outside sensor (red band) for direct boiler weather compensation or when used in conjuction with a compatable Open Therm control eg: Chronotherm or Celcia 20

DHW sensor (red band) or volt free thermostat (make on temp fall)

Remove existing link to use this function

External interlock (volt free)

Remove existing link to use function

Modulating - using Open Therm control eg: Honeywell Chronotherm or Celcia 20

On / Off - using volt free switching control eg: Celcia 10 or low volt room thermostat

Exist links

Terminal

Block X2

5

4

3

2

1

N

L

Power supply to external time clock -230v

Switch live (230v) from external time clock DHW demand

Remove existing link 4-3 to use this function

Switch live (230v) from external time clock HTG demand


NOTE: Terminal blocks are not in line as shown - diagramatic only fig. 17 Boiler External Connection terminal details

LT.AL.W7H.000.025

Exist links

Terminal

Block X9

3

4

5

6

1

2

7

8

X9


On / Off - using simple volt free switching control fig. 18 Wiring diagram on/off control

LT.AL.W7H.000.026

(volt free switching)

The Remeha Avanta can be connected to a 2-wire on/off thermostat, such as the Remeha Celcia 10.

Mount the thermostat in a reference room (usually the living room).

• Remove existing link and connect the 2-wire 24 V room thermostat to connectors 7 and 8 of the X9 terminal strip.



If a room thermostat with an anticipation resistor is being used, parameter p5 should be changed from 0 to 1, see par.

2.10.8.

19

Remeha Avanta clock

X2



When the switch spur is on, the terminal strip X2 will be live

(230 V).

Exist links

Terminal

Block X2

5 N

4 L

3

2

1

Power supply to external time clock -230v

Switch live (230v) from external time clock DHW demand


Switch live (230v) from external time clock HTG demand

Remove existing link 4-1 to use this function fig. 19 Wiring diagram for an external 230 V time clock

LTALW7H000027 can be connected to the Remeha Avanta

.

Live 230 V supply for the time clock - connect to connectors

4 (L) and 5 (N) on X2 terminal strip.

the X2 terminal strip and connect the 230 V output from the time clock to terminal 1 on the terminal strip X2.

the X2 terminal strip and connect the 230 V output from the time clock to terminal 3 on the terminal strip X2.



For this option to function correctly, a link or room control must be fitted between connectors 7 and 8 of X9 terminal strip

(remove existing link before use).

If the 230 V supply for the external time clock is not taken from the boiler – terminal block X2 connections 4 & 5, it must be taken from the same phase as the boiler 230 V supply and correct polarities observed.

with a modulating room control

With an externally mounted simple 230 V switching time clock connected to connectors on X2 terminal strip and a Celcia 15 connected to connectors 7 and 8 of X9 terminal strip (remove existing link), the Remeha Avanta will provide room compensated heating and time control over CH and DHW.



An OpenTherm ® room modulating control (Celcia 15) used in conjunction with a simple external 230 V time clock will provide easy to set up and operate - timed room compensation heating

20

Exist links

Terminal

Block X9

3

4

5

6

1

2

7

8

X9


On / Off - using simple volt free switching control fig. 20 Wiring diagram modulating regulator

LTALW7H000028 outside compensation

The Remeha Avanta has an OpenTherm ® interface. This enables our modulating range of OpenTherm ® room controls (e.g. the Remeha Celcia 15 or 20) to be connected without any further modifications.

room). cables to connectors 7 and 8 of the X9 terminal strip.

sensor to provide weather compensation with room adjustment. Connect the outside sensor to connectors 1 and 2 on the X9 terminal strip.

If the DHW water temperature on the OpenTherm ® control can be adjusted, then the Remeha Avanta will supply water at the temperature determined at the OpenTherm ® with the maximum being set in the boiler.

OpenTherm ® is an industry standard modulating control available from several control manufacturers.



The Remeha Avanta can therefore be controlled directly by any other controls with this OpenTherm ® logo

Exist links

Terminal

Block X9

7

8

5

6

3

4

1

2

Outside sensor (red band) for direct boiler weather compensation or when used in conjuction with a compatable Open Therm control eg: Chronotherm or Celcia 20

X9 fig. 21 Wiring diagram outside temperature sensor

LTALW7H000029

2.7.5 Connecting an outside temperature sensor

An outside temperature sensor can be connected to connectors 1 and 2 of the X9 terminal strip.

The boiler will regulate the output using the set point of the internal heat curve.

This can be set as follows:

- Outside temperature minimum set point = -15°C (adjustable with parameter p29 to between 0 and -30°C)

- Outside temperature maximum set point = 20°C (adjustable with parameter p28 to between 0 and 40°C)

- Flow temperature set point at maximum outside temperature = 20°C (adjustable with parameter p27 to between

0 and 60°C)

- Flow temperature set point at minimum outside temperature

= 20°C (adjustable with parameter p1 to between

20 and 85°C)

75

60

40

20

Factory setting



An outside sensor used in conjunction with a simple 230 V time clock will provide easy to set up and operate - timed weather compensation heating based on the above graph.

20 -15 0 10 fig. 22 Heat curve Remeha Avanta

LTALW7H000030

21

Remeha Avanta

Exist links

Terminal

Block X9

7

8

5

6

3

4

1

2

DHW sensor (red band) or volt free thermostat (make on temp fall)

2.7.6 Connecting the DHW sensor/thermostat system boiler a DHW control sensor or volt-free thermostat can be connected to connectors 3 and 4 of the X9 terminal strip. The control will automatically detect whether a sensor or a thermostat has been connected.

X9 fig. 23 Wiring diagram DHW calorifier sensor or thermostat

LTALW7H000031

X5

Terminal

Block X5

1

2

3

Neutral

Open valve to DHW (230v)

Open valve to HTG (230v)

For external DHW priority diverting valve on System boiler when used in conjunction with

"Open Therm" compensation

2.7.7 Connecting a three-way valve

If required a 230 V DIVERTING three-way valve can be connected to terminal X5 of the control unit. When used in conjunction with an “Open Therm” compensator the DHW-production operates with priority.

Connector X5-1 for N (neutral), connector X5-2 for ”open valve to DHW” (port A of three-way valve) and connector X5-3 for “ open valve to CH (port B of three-way valve)



If port A is connected to heating and port B to hot water X5-3 should be used to enable DHW.

The cable must be fed through the boiler’s casing by means of the supplied cable gland and run trough the cable clamp on the right-hand inside of the boiler.

fig. 24 Wiring diagram three-way valve

59970LTGBW7H041

Exist links

Terminal

Block X9

3

4

5

6

1

2

7

8

X9


On / Off - using simple volt free switching control fig. 25 Wiring diagram for frost thermostat

LTALW7H000032

2.7.8 Connecting a frost thermostat

The boiler must be installed in a frost-free area to prevent the condensate drain from freezing. However if the temperature of the CH water in the boiler drops too low, the integrated boiler protection device is activated as follows:

- at a water temperature below 7°C: the circulation pump is switched on;

- at a water temperature below 3°C: the boiler is switched on;

- when the water temperature is above 10°C: the boiler is switched off and the circulation pump runs for another 15 minutes.



If a 230 V switching time clock is connected to terminal strip

X2, the frost thermostat wired as indicated (on connectors 7 and 8 of the X9 terminal strip) it will not bring the boiler on if the time clock is in the OFF position. In these cases the frost stat must be connected in parallel with the time clock on connectors 1 and 4 of the X2 terminal strip (frost stat contacts to close on temperature fall).

22



- A frost thermostat should preferably be installed in rooms

with a high frost risk.

- Connect the frost thermostat in parallel to the room thermostat

- connectors 7 and 8 of the X9 terminal strip (remove existing

link between connectors 7 and 8 before use).

Exist links

Terminal

Block X9

7

8

5

6

3

4

1

2

X9

External interlock (volt free)

Remove existing link to use this function fig. 26 Wiring diagram for an external interlock

LTALW7H000033



• The integrated boiler protection described above will not

provide complete system or fabric protection.

• When a Celcia 20 control has been fitted to connectors 7

and 8 on X9 (see par. 2.7.4) an outside sensor as detailed

in par. 2.7.5) must be used to provide system and building

fabric frost protection.

• If a frost thermostat is connected parallel to the Celcia on

connectors 7 and 8 on X9, when the frost thermostat calls

for heat (contact closed) it will override the Celcia 20 control

and cause an error message (OT ERROR) flashes in the

display and the boiler will operate continuously to achieve

the flow set point.

2.7.9 Connecting an external interlock

The Remeha Avanta is supplied with an external interlock function. A volt free switching device (i.e. external gas pressure switch, safety thermostat for under floor heating) can be connected to connectors 5 and 6 of the X9 terminal strip after removing the existing link. When this circuit is open the boiler will shut down with the display showing (code 9) and will restart when the circuit is closed.

Terminal

Block X7

1

2

3

X7

Common Alarm

(Closes on alarm) Boiler Run or external pump relay

(Closes on run) indication

As standard the boiler is supplied with 3 volt free connectors on terminal X7. They can be used for an external gas valve, remote alarm and boiler run indication.

terminal X7. Contact closes on lock out. For this purpose set parameter 24 from 0 to 1.

X7. Contact closes on heat demand. For this purpose set parameter 24 from 0 to 2. terminal X7. Contact closes when the gas valve is activated.

For this purpose set parameter 24 from 0 to 3. terminal X7. Contact closes on heat demand. For this purpose set parameter 24 from 0 to 4. fig. 27 Connecting remote alarm

LTALW7H000034 * never connect a pump directly to connectors 1 and 3 on terminal X7, but only via a relay.

23

fig. 28 X10 socket connector

Remeha Avanta

X10

LTALW7H000035

2.7.11 Connecting PC/PDA

Using the optional Recom interface package a PC or PDA can be connected to the X10 “telephone connector”. Using the

Recom PDA service software you can load, change and download various boiler settings and readings. See the user instructions supplied with the software/hardware.



Not all PDA will run the Recom software - check with Broag before buying a unit.

2.8 Connecting an external pump

Connect the system pump to terminal X4 (X4 -1 and X4 -2) of the control unit. The pump’s earth connection must be connected to the control unit’s earth connection with an AMP-connector (supplied with boiler). The cable must be fed through the boiler’s casing by means of the supplied cable gland and run trough the cable clamp on the right-hand inside of the boiler.

Terminal

Block X4

1 - Neutral

2 - Live

3

4

System pump

E fig. 29 Connecting external pump

X4

59970LTGBW7H043

24

X15

X13

X10

X9

X8

X7

X6X5

X4

X3

X0

X1

X2

X0 X6

L N

1 2

BL

BR

GN/YW

Power supply

230V, 50Hz

N

L

X1

4 5 1 3 2

X2

1 2 3 4 5

X3

1 2 3 4

GN/YW

X4

1 2 3 4

X5

1 2 3

X7

1 2 3

X8

1 2 3 4

X9

1 2 3 4 5 6 7 8

X13

4 1 3 6 8

X15

1 10

BK

BR

GY

BL

WH

NO.

NC.

COMM.

BR

WH

GN

YW

RD

WH

BL

WH

BK

BK

S

1 2 3 1 5

X22 X21

Ignition GCV

1 5 4 2

X81

FAN Os

T

1 2 1 2 1 2

X124 X123 X121

As Rs

T

HLT

WIRE COLOURS

BK BLACK

BL BLUE

BR BROWN

GN GREEN

GN/YW GREEN/YELLOW

GY GRAY

RD RED

WH WHITE

YW YELLOW

BOILER COMPONENTS

- - - - Will not be supplied or wired.

25 fig. 30 Wiring diagram

1 10

59970LTGBW7H013

Remeha Avanta

2.10 Commissioning

1

2 fig. 31 Control Panel

3 4 5

At the time of commissioning, complete all relevant sections of the Benchmark Checklist located on the inside back of this document.

LTALW7H000036

The control panel of the Remeha Avanta has 4 function keys and a LED display. The function keys are used to read or change the settings and temperatures.

1 = display

2 = [reset] key

3 = [-] key

4 = [+] key

5 = [enter] key

The display has two positions and displays information on the current operating status of the boiler and any errors. Numbers, dots and/or letters can appear in the display.

If no key is pressed for longer than three minutes with the

“boiler in stand-by mode”, only one dot is lit. With the “boiler operating”, two dots are displayed (Factory default).

code will appear in the display.

the dots.

2.10.2 Additional guidelines for commissioning

Benchmark Commissioning Checklist, located on the inside back of this document. of the completed commissioning details to Broag along with the completed registration card in the supplied warranty leaflet.

line and set up for Natural Gas with an inlet gas pressure of 17- 20 mbar whilst operating and should therefore not require any further adjustments.



The boiler must not be put into operation with a different type of gas without reference to par. 2.4.2

2.10.3 Putting the boiler into operation

This section details the procedure for putting the boiler into operation. There are 7 stages to the procedure:

1. Isolating the power supply and opening the front cover;

2. Checking the connections and making the boiler operational;

3. Switching the boiler on and setting the controls;

4. Checking/setting the gas/air ratio at full load;

5. Checking/setting the gas/air ratio at low load;

6. Making the boiler ready for use;

7. Instructing the user.

fi g. 32 Benchmark Checklist

T002019

26

230 V

1. Isolating the power supply and opening the front cover

• Switch off the boiler at the fused spur and remove the fuse; tom of the front panel, pull the bottom of the panel towards you from the centre, making sure that the plastic catch is released from the central display.

2

1

1 fig. 33 Isolating power fig. 34 Open the valves

1

2

4

59970LTGBW7H036

2. Checking the connections and making the boiler operational

Open the valves on all the radiators connected to the central heating system before filling the system with water.

heating system; expansion tank is full;

• Vent the system; clean water if necessary.



• Avoid water getting into the boiler.

impellor can move freely);

• Check that all boiler connections are watertight;

Check

59970LTGBW7H014

27

Remeha Avanta

C the boiler at the measurement point (C) on the gas block.



• The boiler has been factory tested for natural gas at 20

mbar.

• The minimum gas inlet pressure is 17 mbar for natural gas

• The minimum gas inlet pressure is 37 mbar for propane.

Check fig. 35 Measurement point c on the gas block

59970LTGBW7H037 pliance with the current regulations, see Chapter 7 the maximum test pressure at the gas pipe inlet, with the boiler gas valve open, is 60 mbar.

on the gas block (tighten it again as soon as the pipe is fully vented).

• Check that the gas connections in the boiler are sealed.

connection, have been made correctly. external controls.

sealed.

fig. 36 Check electrical connections and thermostat

59970LTGBW7H015

28

230 V

3. Switching the boiler on and setting the controls

• Replace the fuse and switch on the 230 V power supply.

• Set the controls to heat demand.

230v supply has been isolated for maintenance the boiler will not start until it has fully completed its venting cycle

– this will take about 3 minutes during which time the display will show f[ xx alternating with p[ xx (where xx displays the software version number). This is not a fault, please wait until the cycle is finished. Provided no error codes appear during this time, the boiler will then start to run if called for by the controls.

in the display. Combustion checking/setting must be carried out by a competent person. It must not be carried out unless that person is equipped with a combustion analyser which conforms to the relevant British Standards.

fig. 37 Power on and controls on heat demand

59970LTGBW7H016

A

A

R fig. 38 Check the gas/air ratio control – set to full load – gas/ air ratio adjustment A on gas block

59970LTGBW7H017

4. Setting the gas/air ratio at full load

The Avanta boilers are suitable for both natural gas and propane firing (restrictor required for propane not supplied).

The boilers are supplied as standard set for natural gas

(G20), therefore the following procedure must be carried out

BEFORE the boilers are fired and commissioned for the first time on propane:

- fit restrictor (instructions supplied);

- adjust the fan speed (for procedure see par.2.10.8, for values see table 05 and table 07) and;

- adjust the gas/air ratio (for values see table 05 and table 07).

Boiler type

12v

Setting values O

2

Fan speed (rpm)

Full load

/CO

2

for natural gas h3 *)

O

2

CO

2

% % approx. 2400

5.2

± 0.1

8.8

± 0.1

18v

24v approx. 3500 approx. 4500

5.2

± 0.1

5.2

± 0.1

8.8

± 0.1

8.8

± 0.1

table 04 Setting values full load CO

2 fi tted)

and O

2

(front panel not

Boiler type

12v

18v

24v


2

Fan speed (rpm)

Full load

/CO

2

for LPG (propane) h3 *)

O

2

CO

2

% %

Approx. 2400

Approx. 3300

Approx. 4300

5.1

± 0.1

5.1

± 0.1

5.1

± 0.1

10.3

± 0.1

10.3

± 0.1

10.3

± 0.1

table 05 Setting values full load CO

2 fi tted)

and O

2

(front panel not

*) On forced full load, the 2 nd digit indicates the operating code

29

Remeha Avanta

B

B

R fig. 39 Check the gas/air ratio control – set to part load

– gas/air ratio adjustment B on gas block

59970LTGBW7H018 analyser.

Press the [enter]- key, keep it pressed and also press the

[+]-key until h3 appears in the display; full load has been set.

the O

2

/CO

2

-percentage and compare this to the values in table 04 or table 05.

rect the gas /air ratio controls using the adjusting screw A on the gas block.

increases the gas rate – if the value is too high turn the screw clockwise which decreases the gas rate

• Check the flame through the sight glass which should be stable with a regular blue distribution.



Only make small adjustments of the adjusting screw, maximum 1/8 turns when setting O

2

/CO

2



Ensure that the analysing probe has a gas tight seal in the sampling point with the probe end in the centre of the flue duct.

5. Setting the gas/air ratio at part load

Boiler type

12v

18v

24v


2

Fan speed (rpm)

Part load

/CO

2

for natural gas l3 *)

O

2

CO

2

% %

Approx. 1300

Approx. 1300

Approx. 1300

5,2

± 0,1

5,2

± 0,1

5,2

± 0,1

8.8

± 0,1

8.8

± 0,1

8.8

± 0,1 table 06 Setting values part load CO

2 fi tted)

and O

2

(front panel not

Boiler type

12v

18v

24v


2

Fan speed (rpm)

Part load

/CO

2

for LPG (propane) l3 *)

O

2

CO

2

% %

Approx. 2000

Approx. 2000

Approx. 2000

5.1

± 0.1

5.1

± 0.1

5.1

± 0.1

10.3

± 0.1

10.3

± 0.1

10.3

± 0.1

table 07 Setting values part load CO

2 fi tted)

and O

2

(front panel not

*) On forced part load, the 2 nd digit indicates the operating code.

30

2

1

3

3 fig. 40 Preparing boiler for use

R

• Set boiler to part load:

• l3 appears in the display, part load has been set. the O

2

/CO

table 06.

2

-percentage and compare this to the value in rect the gas /air ratio controls using the adjusting screw B on the gas block.

increases the gas rate – if the value is too high turn the screw B anti clockwise which decreases the gas rate

Check the flame through the sight glass which should be stable with a regular orange distribution. Once the unit has been set to part load, the ‘test at full load’ should be repeated.



Only make small adjustments of the adjusting screw, maximum 1/8 turns when setting O

2

/CO

2




as necessary until the correct values are achieved without further adjustments

6. Preparing the boiler for use gas sampling point.

• Refit the front panel and secure with the two screws again.

operating mode.



Following a manual override the boiler will return to normal operating mode if no keys are pressed for 15 minutes.

59970LTGBW7H019

70°C time clock)

– Natural or LPG of this document.

The boiler is now ready for operation.



The Remeha Avanta is delivered pre-tested and operating parameters set up with standard factory settings to suit the most common systems. These setting can be adjusted to suit specific site conditions but must not be changed without reference to Broag or one of our approved contractors

31

Remeha Avanta

7. Instructing the user missioning procedure to instruct the user in the day to day operation of the boiler and controls fitted to the system and to hand over the completed Boiler Benchmark Checklist at the back of this manual.

fig. 41 Instructing the user

59970LTGBW7H020

2.10.4 Normal start-up procedure the time control is in the on position and any other controls

(i.e. room thermostat etc) calling for heat

The following sequence will appear in the display:

- A display test will briefly appear showing all segments of the display.

f[ xx software version; p[ xx parameter version;

- A venting cycle of 3 minutes now follows, the version numbers will be displayed alternately;

- Next, the following will appear in the display;

[0 ; stand-by mode

2.10.5 Error during the start-up procedure check:

- 230 V main supply available to switch spur

- switch spur fuse

- cable and connections between the switched spur and the boiler control unit

- fuse on the boiler control unit (F2 = 2AT, 230V) follows:

é 10, (the display alternately shows an é and a number e.g. 10). The meaning of this error codes can be found in the error table, see Chapter 4.

• Resolve the error first if possible.

restart the boiler.

32

R fig. 42 Read out settings

LT.AL.W7H.000.046

33



After any error é1, é2, é7, é10 or é13 ; the 3 minute venting cycle will run first before starting the boiler.

- Ensure the time control is in the CH on position

- Set the room thermostat on a high demanding temperature and, the display shows

[1 ; pre-purge stage

[2 ; Ignition stage

[3 ; operating in CH mode.

- Set the room thermostat back to a lower temperature (no more heat demand), the display shows;

[5 ; waiting-time; 3 to 10 minutes (only when flow temperature has already been reached and heating demand is still existing)

[1 ; pre-purge stage

[6 ; pump run on after CH or DHW is satisfied

[0 ; stand-by mode

2.10.6 Read out settings

The following settings can be read out in the ‘user menu’:

- t1 = flow temperature [°C];

- t2 = return temperature [°C];

- t3 = calorifier temperature [°C];

- t4 = outside temperature [°C];

- fl = ionisation current [ uA];

- ñf = fan speed [rpm];

• t1 appears and, for example, 68

(68°C), the current flow temperature;

• t2 appears and, for example,

45 (45°C), the current return temperature;

• fl appears and e.g. ^0 (6uA), the present ionisation current;

• ñf appears and e.g. 30 (3000 rpm), the present fan speed; with t1, etc.; operating status.

Remeha Avanta

2.10.7 Adjust the boiler according to the system

The operating parameters of the Remeha Avanta have been factory set to suit most systems. However it is possible to adjust some of the parameters to enable the Remeha Avanta to operate more efficiently to match specific system designs and site conditions. These parameters are split into two specific sections

1. User level – Parameters p 1 to p 6; can be changed by the user to suit CH and DHW comfort conditions

2. Service level – p17 to dF ; must only be changed by

Broag approved Engineer after consultation with the system designer.



How to change the parameters at user level can be read on the “Short reference card” provided and therefore will not be detailed in this Installation and Service manual.

Codes in display Description access code)

To avoid non authorised adjustments, some parameter settings can only be changed once the special access code 12 has been entered. This code may only be used by qualified installers.

The following settings can be changed at user and service level:

Setting range and notes where applicable

Factory settings

12v 18v 24v

75°C

55°C p p p p p p

1

2

3

4

5

6 p 17 p 18

T

T set set

flow

DHW

Boiler regulation

Eco or comfort setting

Anticipated current for thermostat on/off

Display off automatically

20 - 85°C

40 - 65°C

0 = CH off

and DHW off

1 = CH on

and DHW on

2 = CH on

and DHW off

3 = CH off

and DHW on

0 = comfort setting

1 = eco mode*

2 = regulated by controller

0 = no anticipated current

1 = anticipated current

0 = display stays off

1 = display stays on

2 = display light switches off automatically after 3 minutes

10 – 70 x 100 rpm Maximum fan speed CH

(natural gas)

Maximum fan speed CH

(propane)

Maximum fan speed DHW

(natural gas)

Maximum fan speed DHW

(propane)

10 – 70 x 100 rpm

10 – 70 x 100 rpm

10 – 70 x 100 rpm

24

24

24

24

1

1

1

1

2

2

0

2

35

33

35

33

1

1

1

1

45

43

45

43

1

1

1

1

34

( p p p p

19

20

Minimum fan speed

(natural gas)

Minimum fan speed

(propane)

Starting fan speed

(natural gas)

Starting fan speed (propane)

Do not change

10 - 40

Do not change

Do not change p 21 Pump setting CH p 22

Pump running time after

CH p 23 p 24 p 25 p 26

Connection with Heat

Recovery Unit (HRU)

State remote alarm

(X7 terminal)

Legionella protection

Do not change

1 - 99 minutes

0 = no connection with HRU

1 = connection with HRU

0 = off (connectors 1 and 2 closed)

1 = alarm signal (connectors 1 and 2 closed)

2 = run indication (connectors 1 and 3 closed)

3 = ext. gas valve (connectors 1 and 3 closed)

4 = external pump relay (connectors 1 and 3 closed)

0 = off

1 = on

2 = automatic (after putting boiler into operation, it will run for DHW operation 65°C once a week)

DHW cut-in temperature 2 - 15°C

27

28

Heat curve set point flow temperature

Heat curve set point outside temperature (min)

0 - 60 °C

0 - 30 °C p 29

Heat curve set point outside temperature (max)

-40 - 0 °C

Do not change p 30 Boiler type

P 31 Set point augmentation calorifier

0 - 20 °C p p

d f

d U is shown later)

Restore factory settings

On identification plate d f setting X is shown. Change parameter into X will restore the factory settings, see par. 2.10.10

On identification plate d U setting Y is shown. Change parameter into Y will restore the factory settings, see par. 2.10.10

13

20 1

25

25

0

2

0

0

0

5**

20

20

- 15***

3

15**

X

Y table 08 Settings at service level

1 Do not exceed this value

* The boiler in combination with an external calorifier will not warm up the calorifier in the Eco-mode.

** Only in combination with a calorifier with a DHW sensor

*** “Minus” character is not shown in display



Changing the factory settings could result in the boiler not working properly.

35

R fig. 43 Change parameters in service level

LT.AL.W7H.000.047

Remeha Avanta

The parameters can be changed from the stand-by status as follows: c and 0 appear alternately in the display.

• Press the [+]-key until access code 12 is displayed.

• p1 appears (codes p [ and

[ 1 are displayed alternately);

• This parameter can now be changed as follows; temperature now appears e.g.; 75 (75°C).

65 (65°C).

• p [ and [

1 are displayed alternately.

• Press the [+]-key to change the next parameter, etc.

• Press [reset]-key to return to the operating mode.



The boiler will automatically return to the normal operating mode if no keys are pressed for 10 minutes.

36

R fig. 44 Change boiler output

LT.AL.W7H.000.048

Speed-input ratio

30.0

25.0

20.0

15.0

10.0

5.0

0

1000 1500 2000 2500 3000

Fan speed [rpm]

3500 4000 4500 fig. 45 Fan speed / boiler input ratio Avanta 12V and 18V

T001103

Speed-input ratio

45

40

35

30

25

20

15

10

5

0

1000 2000 3000 4000 5000

Fan speed [rpm] fig. 46 Fan speed / boiler input ratio Avanta 24V

6000 7000

T001104

37 operation

The maximum output for CH operation can be changed with parameter p 17 (maximum fan speed) and is set standard to a speed of 2400, 3500 or 4600 rpm for the three Systemtypes. See the speed-input ratio figures.

This parameter can be changed from the stand-by status as follows: c and 0 appear alternately in the display.

• Press the [+]-key until access code 12 is displayed.

• p1 appears (codes p [ and

[ 1 are displayed alternately);

• Press the [+]-key to go to parameter 17.

• p17 appears (codes p [ and 17 are displayed alternately); for example to 35 (3500 rpm corresponds with 18kW).

• Press [enter]-key to confirm the value.

• Press [reset]-key to return to the operating mode.

R fig. 47 Restore factory settings

Remeha Avanta

LT.AL.W7H.000.052

2.10.10 Restore factory settings

The factory settings can be restored in the service level as follows:

1. p31 has shown, press the [+]-key; d f and xx appear alternately;

3. d f ; press

[+] or [-] key to reach this value;

4. -key to confirm; d U and yy appear alternately;

5. d U ; press

[+] or [-] key to reach this value;

6. -key to confirm; boiler restarts with original factory settings.

2.11 Putting the boiler out of operation

The boiler must be switched off and allowed to cool down before any maintenance or repairs are carried out. If the central heating system is not going to be used for a long time

(during the holidays, for instance, or frost-free periods) it is advisable to put the boiler out of operation.

2.11.1 Boiler with frost protection, during longer periods of non-use perature, e.g. 10°C,

• p4 to 1 (Eco mode), this will switch off the heat retention function.

Now the boiler will only start working to protect itself against freezing.

With external frost protection, the boiler can also prevent the central heating system from freezing. periods of non-use isolate mains power supply at the fused spur unit

• Isolate the gas supply at the boiler valve



Drain the boiler and central heating system if you will not be using the home for a long period and there is a chance of night frost.

38

fig. 48 Annual inspection

59970LTGBW7H022

The Remeha Avanta is practically maintenance free but should be inspected annually.



If during the annual inspection the flue gas analysis indicates that the values are outside the figures given in table 09, maintenance work should be carried out as described in par.3.2.

Also carry out maintenance if the ionisation read-out value is lower than 3 or higher than 9μA, or when the flame core is not correct.

Only Remeha spare parts/materials should be used.

All service and maintenance must be carried out by a qualified

Engineer with the relevant training and certification (i.e. ACS

- IEE registrations etc).

3.1 Inspection

The annual inspection of the Remeha Avanta can be limited to the following checks:

3.1.1.; par.3.1.2.;

- check the ignition electrode and ionisation, see par. 3.1.3;

- check the combustion and flame pattern, see par. 3.1.4; pages of this document.

leaks are sealed and the terminal exit is clear.

fig. 49 Checking flue pipes

59970LTGBW7H023

39

Remeha Avanta

3.1.2 Checking the condensate siphon and refill with clean water to the mark.

fig. 50 Checking the condensate siphon

59970LTGBW7H0234

3 to 4 mm

>1 min fig. 51 Checking the ignition electrode

59970LTGBW7H026

3.1.3 Checking the ignition electrode

- deposits (remove any white deposits with abrasive cloth);

- the adjustment of the ignition electrode (between 3 and 4 mm);

- the quality of the gasket and condition of the porcelain

(this should not be cracked); code fl, see par. 2.10.6.

If the read-out value is lower than 3 or higher than 9μA, check cable and connections are sound if OK replace the ignition electrode.



The ignition cap is fixed on the ignition electrode and therefore cannot be removed.

40

fig. 52 Checking the combustion

After servicing, complete the relevant Service

59970LTGBW7H025

Interval Record section of the Benchmark Checklist located on the inside back pages of this document.

3.1.4 Checking the combustion

Measure the O

2

/CO

2

percentage and the flue gas temperature at the flue gas sample point.

Do this as follows:

- heat the water temperature in the boiler to approx. 70°C;

- unscrew the top of the flue gas point of measurement;

- measure the O

2

/CO

2

percentage and compare this to the check values in table 09.




Boilertype

12v

18v

24v

Checking values O

2

Fan speed (rpm)

Full load h3

/CO

2

for natural gas

Part load L3

O

2

CO

2

% % ca. 2400 ca. 3500 ca. 4500 ca. 1300 ca. 1300 ca. 1300

5,2

± 0.2

5,2

± 0.2

5,2

± 0.2

8.8

± 0.3

8.8

± 0.3

8.8

± 0.3

table 09 Checking values O

2

/CO

2

(front panel not fi tted)

Boiler-

Checking values O

2

/CO

2

for LPG (propane)

Fan speed (rpm) O

2 type

Full load h3 Part load L3

CO

% %

2

12v

18v

24v ca. 2400 ca. 3300 ca. 4300 ca. 2000 ca. 2000 ca. 2000

5.1

± 0.2

5.1

± 0.2

5.1

± 0.2

10.3

± 0.3

10.3

± 0.3

10.3

± 0.3 table 10 Checking values O

2

/CO

2

(front panel not fi tted)



The O

2

/CO

2

- values in table 09 and table 10 are checking values. For setting values see table 04 - table 07

If the flue gas analysis readings are within the values in table

09 the boiler combustion is correct. However, if the readings are outside the given values, then adjust the gas air ratio control to the given values, see table 04 - table 07 in par. 2.10.3.

If the adjustments cannot achieve the mentioned values, the boiler will require a full service please refer to the maintenance instructions in par. 3.2. flame should be stable with an even blue colour and in part load should be stable with an even orange colour.

fi g. 53 Benchmark Checklist

T002020

41

230 V

1 fig. 54 Open the boiler

2

1

59970LTGBW7H038

Remeha Avanta

3.2 Maintenance

To conduct maintenance:



Ensure that a service gasket set and new ignition/ionisation electrode is available before carrying out this procedure.



• Isolate power supply at the fused spur before carrying out

any work on the boiler.

1. Open the boiler the fuse

• Isolate the gas supply at the boiler gas valve tom of the front panel, pull the bottom of the panel towards you from the centre, making sure that the plastic catch is released from the central display.

42

2. Maintenance of the ignition/ionisation electrode plate.

assembly.

3.1.3.

• Do not over tighten the screws when replacing.

2x fig. 55 Maintenance the electrode

59970LTGBW7H027

4

4x

5

2

6

3

1

3. Dismantling the front plate of the heat exchanger

• Isolate gas supply.

it completely.

• Disconnect the electrical connection on the gas block.

gas block.

becomes accessible.

• Release the four nuts on the heat exchanger front plate venturi pipe and burner unit away from the heat exchanger by approx. 10 cm.

• Remove the front plate assembly completely.

fig. 56 Dismantling the front plate of the heat exchanger

59970LTGBW7H028

43

Remeha Avanta

4. Maintenance to the burner the nozzle to close to the surface).

on the surface. If you see any damages, than replace the burner. fig. 57 Checking the burner

59970LTGBW7H029 fig. 58 Maintenance to the heat exchanger

59970LTGBW7H030

5. Maintenance to the heat exchanger (CH) exchanger and the insulation section. Replace sealing.

insulation of the heat exchanger with great care and do not let them get wet. you see obvious deposits, than clean the heat exchanger carefully. Carefully remove any loose dirt with a vacuum cleaner. Then brush the coils of the heat exchanger (if required a cleaning brush is available as an accessory) and remove the loosened particles with a vacuum cleaner.

44

3

4x

2

4

1

5

6

6. Re-Assembling the boiler and checking the combustion

• Re-assemble all the components in reverse order.



• Remember to connect the fan plug again before it is

completely home on the front of the heat exchanger.

• Check that the packing between the front plate and the

heat exchanger has been fitted correctly.

• Switch the boiler back on.

• Check the CO

2

/O

2

-percentage, 2.10.3, point 4.

Check the ionisation current by reading the display, see

par.3.1.3

• Check the connections on the gas block on gas-leaking.



Fill in the Benchmark Service Record on the inside back pages of this document, after conducting any maintenance.

230 V fig. 59 Assembling the boiler

Check

59970LTGBW7H031

45

Remeha Avanta

4 ERRORS

4.1 General

The Remeha Avanta has an advanced control unit. The heart of this control unit is a microprocessor, the abc ® -control which both controls and protects the boiler. If an error is detected anywhere in the boiler, it will lock out and an error code will appear in the display.

The Remeha Avanta displays the error codes as follows:

é 2 (the display alternately shows an é and a number e.g.

2)

The meaning of the various error codes can be found in the error table, see table 11.

How to deal with errors:

• Make a note of the displayed error code.



The error code is important for the correct and swift detection of the nature of the error and for possible support from our technical help line 0118 978 3434.

tinues to appear, look for the cause in the error table below and resolve it.

Error code

é0

é1

Description

Flow or return sensor fault.

Flow temperature is higher than the set maximum temperature

Possible cause Check / solution

Short circuit in the flow, return or boiler temperature sensor.

Defective or not (properly) connected flow, return or boiler temperature sensor.

Check the wiring and the connections of the sensors visually: are the plugs all correctly in position? With a multimeter: measure the resistance in the wiring and connection.

Check that the sensors are working; take the sensors out* and measure the resistance with a multimeter at room temperature

(20 - 25°C); the sensor is working properly if the resistance is between 12 and 15 kΩ

Check the water level and check for leaks.

Insufficient water.

No through flow.

Check that the pump is working; turn the spindle with a screwdriver, if that works but the pump still does not respond, check the wiring; if that is in order the pump is faulty.

Too much air in the system. Vent the system.

Deviation in the flow or return temperature sensor.



46

é2

é3

é4

é5

é6

Return temperature is higher than the flow temperature

Control unit or earth fault

Insufficient water.

No through flow.


Check that the pump is working; turn the spindle with a screwdriver, if that works but the pump still does not respond, check the wiring; that is in order the pump is faulty.


Sensors not wired correctly Check the wiring between sensors and control unit.

Pump operating in wrong direction

Check wiring from and to control unit.

Flow and return connections crossed flow and return connections

Deviation in the flow or return temperature sensor.



Mains supply not correctly earthed.

Control unit faulty.

Check that the power supply from the switch spur is properly earthed, if that is the case the control unit is faulty.

No ignition spark.

Check:

• the connection between the ignition wire and the ignition trafo;

• the ignition wire and electrode for ‘dielectric breakdown’;

More than 5 start attempts without any flame formation.

A spark but no flame.

the ignition electrode is properly earthed.

Check that:

• the gas tap is open;

• the gas pre-pressure is sufficient;

• the gas pipe is de-aerated;

• the gas valve is energised during ignition and opens;

• the electrode is correctly fitted and clean;

• the CO

2

adjustment at low and full load;

• there is no obstruction / fitting fault in the gas pipe;

There is a flame but no, or insufficient ionisation (lower than 3 or higher than 9 μA) blocked siphon); there is no recirculation of flue gasses

(either inside or outside the boiler).

Check:

• the flame, is the heart of the flame visible and the flame stable?

• the CO

2

adjustment at low and full load;

• that the ignition electrode is correctly earthed;

No ionisation or ionisation failure more than 5 times during one heat demand.

Unwanted flame formation

CO

2

wrongly adjusted

Ignition Unit

Control unit oxide film (remove with sandpaper or a screwdriver); look at the shape (are the pins still the original shape and is the distance between the two ends of the pins between 3 and 4 mm).

Check:

• CO

2

adjustment on the gas block;

• Ignition/ionisation pin;

• Flue/air-supply connections;

• Gas flow at full load; the boiler).

Faulty ignition unit, replace ignition unit.

Faulty control unit, replace control unit.

47

Remeha Avanta

é7

é8

é10

é11

é13

é43

é44

é45

No water in the boiler or the pump is not working

Fan fault

No through flow during venting cycle

Air box temperature to high

Heat-exchanger fuse protection has responded; replace the heat exchanger after finding and solving the cause.

Insufficient water.

No through flow.


Check that the pump is working; turn the spindle with a screwdriver, if that works but the pump still does not respond, check the wiring; that is in order the pump is faulty.


Check wiring from and to control unit.

Pump operating in wrong direction.

Pump not running

Fan is not working

Check wiring, connections and pump

Check:

• Fan function;

• Fan wiring and connection.

Fan does not stop Check:

• Fan function;

• Fan wiring and connection;

• Excess chimney draught.

Insufficient water.



No through flow

Air leakage from heat exchanger to air box

Heat exchanger faulty.

• Check that the pump is working; turn the spindle with a screwdriver, if that works but the pump still does not respond, check the wiring; if that is in order the pump is faulty.

• Open the radiator valves.

Check:

• The sealing of the viewing glass;

• Whether front plate of heat exchanger is properly tightened

• Front plate sealing;

• Whether ignition electrode is properly fitted

Check wiring between heat exchanger fuse.

Insufficient water.

No through flow.


Check that the pump is working; turn the spindle with a screwdriver, if that works but the pump still does not respond, check the wiring; if that is in order the pump is faulty.

Parameter limits Automation settings

Parameter check Automation settings

Replace d f / d U settings, see par. 2.10.10

If this error code still returns after resetting; please contact Broag.

Replace d f / d U settings, see par. 2.10.10

If this error code still returns after resetting; please contact Broag.

Default parameters

Automation settings Replace boiler control unit.

table 11 Error codes

* When sensors have been taken out, be sure to replace them max. 40 mm underneath heat exchanger.

If you read out a not listed error, please report to Broag.

48

Temperature/resistance diagram

25000

20000

15000

10000

5000

0

10 20 30 40 50 60 temperature in °C

70 80 90 100 fig. 60 Sensor resistance graph

Sensor resistance

The code d8 , d5 or d9 can appear in the display.

• d8 is a control stop and will appear if the measured flow temperature ( t1) is higher than the flow temperature set (T set

flow). The boiler will start working again automatically once the flow temperature falls below the flow temperature set.

• d5 is a control stop from 3 till 10 minutes and appears if the set flow temperature (t1) has already been reached and the heating demand still exists.

• d9 is a lock-out and appears if the maximum temperature rise is exceeded or if the dT between the supply and return temperature ≥ 22°C or a rate of rise in the flow temperature > 2,7°C/sec. and also at a boiler-start with nothrough flow or insufficient water. The boiler will try to restart after 10 minutes.



Every 10 minutes the boiler will try to restart until the cause has been removed.

• d9 is a lock-out and can appear in the following situation:

- the shut down input (between terminals 5 and 6 on X9) has been activated (= opened).



The lock-out will disappear once the cause has been removed!

The Remeha Avanta control unit has an error code memory, in which the last 16 errors are stored. In addition to the error code ( é and a number xx).

The following data is also stored:

• n and a number xx)

• the operating status of the boiler ( 5t and a number xx)

• t1 and the value xx) return temperature ( t2 and the value xx) at the time the error occurred.

To get access to the error memory, access code must be entered.

49

R fig. 61 Error read outs

LT.AL.W7H.000.064

50

Remeha Avanta

4.4.1 Error read outs

• Press the [enter]-key and keep it pressed;

• c and 0 appear alternately in the display;

• Enter the special access code 88 with the [+] or [-]- key;

• ér and the number of the last error alternately, for example 02.

list of errors.

display shows the error code as follows;

- first error code é with error number e.g. 12

- then status code 5t with status number e.g. 3 (burning for central heating)

- then number of time that the error has occurred ñ and a number e.g. 3

- then the flow temperature when the error occurred t1 and temperature e.g. 75

- final the return temperature when the error occurred t2 and temperature e.g. 60

This cycle continues to repeat itself.

appears in the display;

ér and e.g the numbers 1 and 8.

• Press the [+] or [-]-key to look at the following error data.

The last message in the list, Er followed by cl will appear in the display; the display: 0

• Press the [+]-key to set the parameter to 1.

• Press the [enter]-key, to delete the error memory:

• Press the [escape]-key twice to exit the error memory.



When tracing an error, the cause can often be found more quickly if the operating status at the time the error occurred can be retrieved from the error memory.

Your reference

Customer

Name

Address

City

Post Code

Contact person

Telephone

Part. no.

Description Boiler serial nr.*

Model

5.1 General

If, following the annual inspection or maintenance any part of the boiler is found to need replacing, use Remeha spare parts only or spare parts and materials recommended by Remeha.

If any component is to be replaced and it is covered by the terms and condition as described in the warranty leaflet, return the faulty component to Broag-Remeha with the details as show in table 12

Date

Installation date Problem description

Reference table 12 Return form example

* These details can be found on the boiler type plate; the type plate is fixed to the bottom of the boiler.

51

Remeha Avanta

2008

2030

2007

2009

1006

1001

2001

1003

2022 1004

2006

2010

2026

2002

4008

4007

2015

2013

2003

2012

2014

2016

2004

1007

2018

2017

2011

2005 4002

2018

2020

2019

3006

3001

1005

4009

1002

4010

3004

1007

1005

3009

3010

2021

4012

3008

3011

3012

3005

3002

3012

2024

2023

1002

4001

4006

4004

3003

4011

4003

3004

2025

2023

4005

2029

2028

2027

3015

59970EVGBW7H010b fig. 62 Exploded view Remeha Avanta

52

59970EVGBW7H010

53

Break down parts kit

Part No Description

S100006 Heat exchanger

S62741

S62743

S59118

Burner

Electrode ignition/ionisation

Glass inspection set

S100015 Siphon assembly

S58733 Sensor temperature (2 pcs)

S100011 Fan assembly

S58685 Gas combination block

S100068 Control board

S59128 Display print board

S100012 Transformer ignition

S43561 Fuse glass 2 amp slow (10pcs) table 13 Break down parts kit

Position

2001

2003

2004

2005

2021

2023

3001

3005

4001

4002

4003

4006

Remeha Avanta

EC – DECLARATION OF CONFORMITY

: 110

Town, Country : Postbus 32, NL-7300 AA Apeldoorn

- hereby declares that the appliance(s) : Remeha Avanta 12V, 18V, 24V comply / complies with the specifications of the following EEC directives:

EN 297 (1994*) , EN 483 (1999*) , EN 677 (1998*)

92/42/EEC

2006/95/EEC EN (1997*)

60335-1 (1994*)

EN

EN (2000*) , EN 55014-2 (1997*)

EN (2000*) , EN 61000-3-3 (1995*)

97/23/EEC (art. 3, lid 3)

(art.3 3)

05

*) inclusief (eventuele) aanvulling

*) including (if any) completion

Apeldoorn, oktober 2008

W.F. Tijhuis

Approval Manager

703/2008/10/68

54

7 REGULATIONS

The boiler meets the requirements of the EC regulations at the following directives:

- 90/396EEC Gas appliances directive

- 92/42/EEC Efficiency directive

- 2006/95/EEC Electrical low voltage directive

- 97/23/EEC Pressure equipment directive (art. 3, sub. 3)

Classification type for evacuation of the combustion products; according EN 483

7.2 Remeha factory test

Before it leaves the factory, each Remeha Avanta boiler is optimally adjusted and tested for:

In addition to the regulations and guidelines as mentioned in par. 7.1 the following guidelines in this documentation should also be observed.

It applies for all regulations and guidelines, mentioned in this

Installation and Service manual, that any additions or new regulations and guidelines at the time of installation will also apply.

55

Remeha Avanta

8 TECHNICAL SPECIFICATIONS AND WORKING PRINCIPLE

Appliance type Remeha Avanta

General

Gas council number

Boiler control

Nominal output Pn (80/60°C, CH)

Nominal output Pn (50/30°C, CH)

Nominal input Qn

Nominal input Qnw

Assembly dry weight

Hi

Hi

Noise level at distance of 1m from the boiler (at full load)

Gas and flue details

Classification due to discharging flue gases

Gas type permitted

Gas inlet pressure natural gas

Gas consumption natural gas

Gas flue rate

Gas inlet pressure propane

Gas consumption propane

NO x

Class 2)

NO x annual emission (n = 1)

maximum

maximum

Residual fan duty (full load)

CH side

Water capacity (heat exchanger and piping)

Minimum operating water pressure

Maximum operating water pressure PMS

Water temperature

Operating temperature

maximum

maximum

Water pressure loss dT = 11°C

Electrical

Main supply

Power consumption W maximum

in stand-by status

Degree of protection

kW kW kW kW kg dB(A)

-

mbar m n

3 /h kg/h mbar m n

3 /h

ppm mg/kWh

Pa l bar bar

°C

°C mbar

V/Hz

W

W

IP

12v 18v 24v

41-288-09

12.0

13.1

5.8 - 12.3

12.3

20

41-288-06 modulating or on/off

17.6

19.0

5.8 - 18.0

18.0

20

< 44

41-288-10

24.7

26.5

6.1 - 25.2

25.2

21.5

B23, B33, C13, C33, C43, C53, C63, C83

1.3

20.5

0.5

30

II

2H3p

(natural gas and propane)

20 - 25

1.8

31

37 - 50

0.7

5 1)

< 30

< 53

40

2.7

42.4

1.0

50

1.8

1.8

0.1

3

98

80

440

2.0

50

230 / 50

50

< 3

X4D

115 table 14 Summary of technical data

1 ) Measured according EN 483 (Class 5 complies with a limited concentration of NO x

< 70 mg/kWh)

2 ) This data applies for natural gas.

56

1

2

3

4

11

10

1. Flue / Air inlet connection

2. Flue gas measuring point

3. Heat exchanger

4. Front plate heat exchanger

5. Syphon

6. Control panel

7. Fan

8. Air inlet tube

9. Gas valve multiblock / Ignition transformer

10. Ignition/ionization electrode

11. Control unit

5

6 fig. 63 Components of the Remeha Avanta

9

8

7

59970LTGBW7H045

The Remeha Avanta casing serves as a sealed air box, with air drawn in by the fan. On the outlet side of the fan is a venturi, into which a measured quantity of gas is injected based on the volume of air available. The fan speed control is dependent on the settings of the external control, the advanced boiler controller ‘abc ® ’ and the prevailing temperatures (measured by the temperature sensors).

This method of gas/air ratio control ensures that the gas quantity is precisely adjusted to the air quantity. Thus creating optimum combustion over the whole heat input range. The gas and air is mixed in the venturi and then passes into the specially designed pre-mix burner. After combustion, the hot flue gas is directed through a specially designed, high efficiency helicoil stainless steel heat exchanger with a large surface area, and transfers its heat to the system water circulating around the coils. In the condensing part of the exchanger the water vapour in the flue gas condense within it and the heat released during this process (the so-called latent or condensing heat) is also transferred to the system water. The condensate water so formed is discharged from the heat exchanger via a siphon.



In normal operation, the boiler’s flue gas discharge will produce a visible white condensing “plume” and therefore care should be taken when choosing a location for the terminal.

8.3.1 Regulating

The Remeha Avanta is a fully modulating boiler and can be regulated using one or more of the following methods;

57 ha Celcia 15 room compensator and the Remeha Celcia

20 outside weather compensator or with any other proprietor’s OpenTherm ® controls.

time clock.

strip).

4. On/Off room thermostat – 230 V (on the X2 terminal strip). two channel time clock or with any other appropriate time clock. For further details see par. 2.8.

58

Remeha Avanta

8.3.2 Advanced boiler control (‘abc®’-control)

An intelligent advanced boiler control (‘abc ® ’) continuously monitors the boiler conditions and ensures a very reliable supply of heat. This control system is adept at dealing with negative influences from the system such as flow reduction, airflow problems and alike. In the event of such influences, the boiler will not go to “lock-out” failure mode, but will in the first instance modulate back, and if necessary, depending on the nature of the circumstances, will temporarily switch off (shutdown or control stop), and then after a short while simply try again.



Provided that the situation is not actually hazardous, the

Remeha Avanta will always try to supply heat.

The ‘abc ® ’- control prevents unnecessary additional call outs.

8.3.3 Regulating the water temperature

The Remeha Avanta is fitted with an electronic temperature regulator with flow and return temperature sensors. The flow temperature can be set to between 20 and 75°C, see 2.10.8

(factory setting 75°C). The boiler modulates it’s output up and down to match the flow set point from internal or external control. When the boiler is at it’s at minimum output and the flow temperature still continues to rise, once the flow set point is exceeded by 5°C the boiler will shut down on a controlled stop

(code 8).

8.3.4 Low flow / water protection

The Remeha Avanta has a low-water protection based on temperature readings. By modulating down as soon as there is a risk of an insufficient water flow, the boiler will keep working for as long as possible. An insufficient water flow, however caused, - indicated by a flow/return dt ] 22°C or a rate of rise in the flow temperature > 1°C/sec – will be sensed by the ‘abc ®’ control which will shut the boiler down in a blocking mode with the display showing (code 9) for 10 minutes and before re starting.

If there is no water in the boiler or if the pump is not running, it will go to lock out (code é7) and require manual re-set.

8.3.5 High Limit temperature protection

If the flow temperature exceeds 98°C the high limit temperature protection device switches off the boiler in a lock out mode with the display showing (code é1). This mode will require a manual re-set.

When the fault is corrected, the boiler can be restarted by pressing the reset-key on the control panel and holding for 3 seconds.

9 EFFICIENCY DATA AND GAS EFFICIENCY LABELS

108.7 % in relation to Hi at a load of 30% and a return temperature of 30°C.

98 % in relation to Hi at full load and an average water temperature of 70°C (80/60°C).

94.3 % in relation to Hi at full load and an average water temperature of 40°C (50/30°C).

59

60

Remeha Avanta

62

Remeha Avanta

63

120579-060309

120 5 9

© Copyright

All technical and technological information contained in these technical instructions, as well as any drawings and technical descriptions furnished by us remain our property and may not be multiplied without our prior consent in writing.

Broag Ltd.

Remeha House

Molly Millars Lane

RG41 2QP WOKINGHAM,

Berks.

Tel: +44 118 9783434

Fax: +44 118 9786977

Internet: uk.remeha.com www.avantarange.com

E-mail: [email protected]

REMEHA 12v Service manual

Installation &

Service Manual

Remeha Avanta Range

12v I 18v I 24v

CONTENTS

INTRODUCTION

1 SAFETY

2 INSTALLATION

ø8 mm

The pump should be fitted on the flow pipe from the boiler and have isolating valves each side.

Min. 450 mm

Feed and exansion cistern

An adequate pressure gauge should be fitted in a position where it can be seen during filling of the system.

Heating vent

Min. 22 mm

Static head

Min. 1 m

Cold feed

Min. 15 mm

Flow

Max. 150 mm

Return

L N

4 ERRORS

EC – DECLARATION OF CONFORMITY

7 REGULATIONS

8 TECHNICAL SPECIFICATIONS AND WORKING PRINCIPLE

9 EFFICIENCY DATA AND GAS EFFICIENCY LABELS

Related manuals

Table of contents

REMEHA 12v Service manual

Installation &

Service Manual

Remeha Avanta Range

12v I 18v I 24v

CONTENTS

INTRODUCTION

1 SAFETY

2 INSTALLATION

ø8 mm

The pump should be fitted on the flow pipe from the boiler and have isolating valves each side.

Min. 450 mm

Feed and exansion cistern

An adequate pressure gauge should be fitted in a position where it can be seen during filling of the system.

Heating vent

Min. 22 mm

Static head

Min. 1 m

Cold feed

Min. 15 mm

Flow

Max. 150 mm

Return

L N

4 ERRORS

EC – DECLARATION OF CONFORMITY

7 REGULATIONS

8 TECHNICAL SPECIFICATIONS AND WORKING PRINCIPLE

9 EFFICIENCY DATA AND GAS EFFICIENCY LABELS

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Avanta 24v

Samsung

AIXDSH028EA

REMEHA

18v

REMEHA

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REMEHA

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REMEHA

Avanta Plus 24s

Table of contents