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Vaillant ecoTEC plus VU Series User Manual

Vaillant ecoTEC plus VU Series
24 pages
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en Operating instructions
ecoTEC plus
VU../VUW../VUI..
0020308119_02 - 28.11.2022

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Vaillant ecoTEC plus VU Series Specifications

General IconGeneral
TypeCondensing Boiler
InstallationWall-mounted
Heating circuitSealed System
ErP RatingA
FuelNatural Gas
EfficiencyUp to 94%
Modulation1:6
Warranty2-5 years (depending on model and region)
Dimensions720 x 440 x 338 mm

Summary

1 Safety

1.1 Intended use

Product's primary purpose and limitations.

1.2 Qualification

Requirements for installation and user operation.

1.3.1 Gas

Actions to take if gas is detected.

1.3.2 Risk of death from escaping gas

Emergency procedures for gas leaks.

1.3.3 Flue gas

Actions to take if flue gas is detected.

1.3.4 Subsequent product modifications

Prohibitions on altering safety devices and components.

1.3.5 Material damage

Precautions to prevent damage to the product and system.

1.3.6 Legionella

Measures to prevent Legionella growth.

2 Notes on the documentation

3 Product description

3.1 Display and control elements

Description of the control panel's buttons and display.

3.2 Displayed symbols

Meanings of symbols shown on the display.

3.3 Serial number

Location and meaning of the serial number.

3.4 CE marking

Explanation of the CE conformity mark.

3.5 UKCA mark

Explanation of the UKCA conformity mark.

3.6 Hot Water Association

Information about the Hot Water Association membership.

3.7 Benchmark

Details on the Benchmark quality scheme.

4 Operation

4.1 Operating concept

General principles of product operation and controls.

4.1.1 Basic display

How to view and set basic parameters on the display.

4.1.2 Operating levels

Different user levels and access to settings.

4.2 Setting the language

Steps to change the product's display language.

4.3 Activating/deactivating the button lock

How to lock/unlock the control panel buttons.

4.4 Heating mode

How to use the heating function.

4.5 DHW mode

How to use the domestic hot water function.

4.5.4 Activating the shift-load cylinder

How to activate the shift-load cylinder function.

4.6.1 Switching the time control on/off

Enabling/disabling the heating timer.

4.6.3 Setting time periods using the time programme assistant

Using the assistant to set heating schedules.

4.7 Calling up status codes

How to view current operating status codes.

5 Care and maintenance

5.1 Caring for the product

Routine cleaning instructions.

5.2 Maintenance

Importance of annual servicing by a professional.

5.3 Reading maintenance messages

How to interpret maintenance alerts.

5.4.2 Topping up and purging the heating installation

How to add water and remove air from the system.

5.5 Checking the condensate discharge pipe and tundish

Ensuring the condensate drain is clear.

6 Troubleshooting

Danger! Risk of death caused by improper repair work

Warning about dangerous repair actions.

If fault codes (F.XXX), LHM codes (N.XXX) are shown...

How to handle error and limp home mode codes.

7 Decommissioning

7.1 Temporarily decommissioning the product

Steps for short-term shutdown.

7.2 Permanently decommissioning the product

Steps for long-term or final shutdown.

8 Restarting

9 Recycling and disposal

10 Guarantee and customer service

10.1 Guarantee

Details of the product guarantee.

10.2 Customer service

How to contact customer support.

Appendix

A End user level

Navigating and using the end-user menu.

A.1 Additional functions

Details on extra features like heating timer.

B Status codes

List and meaning of product status codes.

C Fault codes/limp home mode codes

List and meaning of fault and limp home codes.

D Troubleshooting

Heating will not start (hot water generation OK)

Diagnosing and fixing issues with heating not starting.

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