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2 Instructions for use ecoTEC / 838402_06
Specified use ................................................................ 2
1 Notes on these instructions ........................... 2
1.1 Storage of the documents ...................................... 2
1.2 Symbols used in this manual ................................. 3
1.3 CE marking.................................................................. 3
1.4 Data badge .................................................................. 3
2 Safety ................................................................. 3
2.1 Setup and adjustments ............................................ 3
2.3 Safety instructions ................................................... 3
2.4 Modifications in and around the boiler ............... 3
3 Instructions on operation ................................ 5
3.1 Factory guarantee .................................................... 5
3.1.1 Two year guarantee for ecoTEC plus and three
year guarantee for ecoTEC exclusive boilers....... 5
3.1.2 One year guarantee for ecoTEC pro boilers ...... 5
3.1.3 Registering with us ................................................... 5
3.1.4 Immediate help .......................................................... 5
3.2 Intended use ............................................................... 5
3.3 Care .............................................................................. 5
3.4 Recycling and disposal ............................................ 5
3.4.1 The appliance ............................................................. 5
3.4.2 Packaging .................................................................... 5
4 Operation ........................................................... 6
4.1 Overview of controls on ecoTEC plus and
ecoTEC exclusive ...................................................... 6
4.2 Overview of controls on ecoTEC pro ................... 7
4.3 Initial checks before turning on ............................ 7
4.3.1 Opening the service valves ................................... 7
4.3.2 Checking the system pressure .............................. 8
4.4 Turning the boiler ON .............................................. 9
4.5 Domestic hot water with ecoTEC combination
boilers .......................................................................... 9
4.5.1 Setting the water temperature ............................. 9
4.5.2 Switching the warmstart function on and off ... 9
4.5.3 Drawing hot water (ecoTEC combination
boilers only) ................................................................ 10
4.6 Heating operation ..................................................... 10
4.6.2 Switching off heating (summer operation) ........ 11
4.6.3 Setting a room- or outside temperature
controller ..................................................................... 11
4.7 Status displays ........................................................... 11
4.8 Troubleshooting ........................................................ 12
4.8.1 Problems due to low system water pressure .... 12
4.8.3 Flue problems ............................................................ 12
4.9 Turning off the boiler ............................................... 12
4.10 Frost protection......................................................... 13
4.11 Maintenance and customer service ..................... 13
Contents
Specifi ed use
1 Notes on these instructions
Specified use
The Vaillant ecoTEC plus, ecoTEC pro and ecoTEC exclusive
models are compact, wall-mounted condensing boilers.
ecoTEC plus and pro combination boilers provides both
central heating and domestic hot water, with the domes-
tic hot water supplied directly from the boiler. The boiler
will operate automatically to provide domestic hot water
whenever a hot water tap is opened, and automatically
adjusts to meet the demand for both central heating
and domestic hot water in the most economical way.
ecoTEC system boilers provides central heating and do-
mestic hot water where a separate indirect hot water
cylinder is also incorporated to the system.
1 Notes on these instructions
To ensure clarity of information in instructions a new
European standard of advice and symbols is being intro-
duced. To ensure compliance with this new standard the
following details are included.
The following information is intended to help you
throughout the boilers entire instruction pack.
We assume no liability for any damage caused by not
following these instructions.
Other instruction supplied with this appliance
For the end user
Short operating instructions
(ecoTEC plus and ecoTEC exclusive only) no. 838404
Warranty card with return envelope
2 years no. 809222
1 year no. 802961
For the installer/service engineer:
Instructions for installation and servicing
- for ecoTEC plus and pro no. 839592
- for ecoTEC exclusive no. 0020017768
Flue installation instructions no. 834449
The instructions for any accessories and controllers
used also apply.
The Benchmark gas boiler commissioning checklist (in
the installation manual) should be completed by the in-
staller and/or the commissioning engineer.
If, after reading these instructions, you have any ques-
tions on the operation of the boiler, please contact ei-
ther your installer or Vaillant Technical Department.
1.1 Storage of the documents
Please store this user manual and all related documents
so that they are available whenever they are required.
If you move please pass on the documents to the buyer.
2


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