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Table of contents

Operation manual

2

R0 R035A4AA

Wall-mounted condensing boiler

3P469438-6D – 2017.07

Table of contents

1 Introduction

2

1.1

About the unit ............................................................................

2

1.2

About the documentation ..........................................................

2

1.2.1

Meaning of warnings and symbols..............................

2

2 Safety instructions

2

2.1

Installation .................................................................................

2

2.2

Smell of gas...............................................................................

3

2.3

Modifications on the unit............................................................

3

2.4

Gas conversion .........................................................................

3

2.5

For the user ...............................................................................

3

3 Operation

3

3.1

User interface ............................................................................

3

3.1.1

Buttons and dials ........................................................

4

3.1.2

LCD screen .................................................................

4

3.1.3

Status indicator ...........................................................

4

3.2

Operating the unit......................................................................

4

3.2.1

To switch ON the unit..................................................

4

3.2.2

About the low water temperature function ..................

4

3.2.3

About the electronic gas adaptive system calibration .

4

3.3

Basic usage ...............................................................................

4

3.3.1

About the home screen...............................................

4

3.3.2

To select the operation mode .....................................

5

3.3.3

Possible operation modes...........................................

5

3.3.4

Changing temperature setpoints.................................

5

3.3.5

Possible central heating operation modes ..................

6

3.3.6

About the central heating ECO mode .........................

6

3.3.7

About the domestic hot water operation .....................

6

3.3.8

About the domestic hot water comfort mode ..............

7

3.3.9

About the boiler frost protection ..................................

7

3.4

Error handling ............................................................................

7

3.5

Menu functions ..........................................................................

7

3.5.1

To use menu level 1....................................................

7

3.5.2

Info menu ....................................................................

7

3.5.3

User settings menu .....................................................

8

3.5.4

Installer settings menu ................................................

9

4 Maintenance and cleaning

9

4.1

To clean the outer surface of the unit........................................

9

5 Energy saving tips

9

6 Contact

9

7 Error codes

9

1

Introduction

1.1

About the unit

This ROTEX unit is a wall-mounted gas-fired condensing boiler that
can  supply  heat  to  central  heating  systems,  as  well  as  supply
domestic hot water. Depending on settings, it is possible to use the
unit  solely  for  hot  water  or  solely  for  central  heating.  Hot  water
supply  type  can  be  instantaneous  or  by  means  of  a  hot  water
storage  tank.  The  type  of  the  boiler  can  be  recognised  from  the
model name written on the identification label, which is located at the
right cover of the unit. See table below:

Model

Type

Domestic hot water

supply

Filling loop

R2CND028A4AA R2CND028

Instantaneous

External

R2CND035A4AA R2CND035

Instantaneous

External

Model

Type

Domestic hot water

supply

Filling loop

R2TND028A4AA

R2TND028

Storage tank

External

R2TND035A4AA

R2TND035

Storage tank

External

A control unit, which contains a user interface, controls the ignition,
safety systems, and other actuators. User interaction is provided via
that  user  interface,  which  is  composed  of  an  LCD  screen,  push
buttons, and two dials, and which is located on the front cover of the
unit.

1.2

About the documentation

The  instructions  contained  in  this  document  are  intended  to  guide
you  through  the  operation  of  the  unit.  Damage  caused  by  non-
observance  of  these  instructions  are  not  under  the  responsibility  of
ROTEX.

▪ The  original  documentation  is  written  in  English.  All  other

languages are translations.

▪ The  precautions  described  in  this  document  are  written  for  users

and cover very important topics, follow them carefully.

▪ Please  read  the  instructions  in  the  manual  carefully,  for  your

safety and health.

▪ Please keep this manual for future reference throughout the unit's

period of use.

▪ Request  the  installer  to  inform  you  about  the  settings  that  he

made to configure your system.

1.2.1

Meaning of warnings and symbols

DANGER

Indicates a situation that results in death or serious injury.

WARNING

Indicates  a  situation  that  could  result  in  death  or  serious
injury.

CAUTION

Indicates a situation that could result in minor or moderate
injury.

NOTICE

Indicates  a  situation  that  could  result  in  equipment  or
property damage.

INFORMATION

Indicates useful tips or additional information.

2

Safety instructions

Always observe the following safety instructions and regulations.

2.1

Installation

WARNING

Installation,  service,  maintenance  and  repair  of  the  boiler
can  only  be  carried  out  by  suitably  qualified  competent
persons,  in  accordance  with  the  applicable  legislation,
regulations, rules and guidelines.

WARNING

The  unit  may  only  be  operated  with  its  casing  properly
mounted.  Otherwise,  in  unfavourable  conditions,  material
damage or even injury or death can result.

Содержание R2CND028A4AA

Страница 1: ...Operation manual Wall mounted condensing boiler English Operation manual Wall mounted condensing boiler R2CND028A4AA R2CND035A4AA R2TND028A4AA R2TND035A4AA...

Страница 2: ...pply Filling loop R2CND028A4AA R2CND028 Instantaneous External R2CND035A4AA R2CND035 Instantaneous External Model Type Domestic hot water supply Filling loop R2TND028A4AA R2TND028 Storage tank Externa...

Страница 3: ...Do not damage or remove any seals on components Only qualified persons are allowed to alter sealed components Do not make any modifications on Boiler Gas water or power supply Flue system 2 4 Gas con...

Страница 4: ...oiler Status Description Standby When there is no heat demand the status indicator shows this with a kind of breathing pulsation of the blue and white LED Flame At the moment flame ignites for central...

Страница 5: ...ater operation is active Operation mode Description Winter mode Both domestic hot water operation mode and central heating operation mode are enabled The boiler can produce domestic hot water as well...

Страница 6: ...dial Increasing or decreasing the setpoint value reflects to the central heating water temperature and the room temperature respectively The and icons are shown on the screen when central heating oper...

Страница 7: ...ling When an error occurs the normal behaviour of the user interface is interrupted and the status of the status indicator is affected However be aware that not all errors have the same effect on the...

Страница 8: ...dependency 1 1 2 or 24 U10 Room temperature setpoint used by ROTEX Opentherm room thermostat during night C 18 10 30 User settings menu Parameters detailed Description U00 When using outdoor sensor ab...

Страница 9: ...of your boiler with a damp cloth and a little solvent free soap CAUTION Sprays solvents or cleaning agents containing chlorine can damage the exterior the fittings or the control unit Do not use them...

Страница 10: ...eeded If problem repeats contact your service agent E1 66 Calibration conditions fault No reset needed Wait burner to restart If problem repeats contact your service agent E1 67 Missing calibration Pe...

Страница 11: ...Solution UA 66 BCC ID of internal EEPROM is inconsistent Contact your service agent UA 67 BCC is missing Contact your service agent UA 68 BCC is not compatible with PCB BCC ID Contact your service ag...

Страница 12: ...usland Our partners abroad Unsere Partner im Ausland Nos partenaires l tranger Le nostre sedi all estero Neustros representantes en el extranjero Nasi partnerzy za granic Na i partne i v zahrani http...

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