Vaillant ecoTEC plus SERIES Installation And Maintenance Instructions

Table of Contents
3Installation and maintenance instructions ecoTEC plus 0020116700_01
10.7 Filling and purging the heating installation ............41
10.7.1 Filling the heating installation .................................. 42
10.7.2 Purging the heating system ....................................... 42
10.7.3 Flushing the system for the first time ("cold") ..... 42
10.8 Avoiding low water pressure ...................................... 43
10.8.1 Top up VUW boilers using a filling device ............... 43
10.9 Fill and purge the hot water system ........................ 43
10.10 Filling the condensate siphon .................................... 43
10.11 Checking the gas setting.............................................44
10.11.1 Factory setting ............................................................... 44
10.11.2 Checking for tightness of the flue gas installation
and flue gas recirculation ........................................... 44
10.11.3 Checking the gas flow rate ..................................... 45
10.11.4 Checking the gas inlet working pressure ................ 45
10.12 Carrying out a full function test................................ 46
10.12.1 Checking the heating mode ........................................47
10.12.2 Checking hot water generation
(VUW boilers only) .........................................................47
10.12.3 Checking hot water generation
(VU boilers only).............................................................47
10.13 Final flush of the heating system ("hot") ...............48
11 Adapting the boiler to the heating installation 49
11.1 Diagnosis codes – Overview ....................................... 49
11.1.1 Setting the heating partial load .................................53
11.1.2 Setting pump overrun time and pump operating
mode ................................................................................53
11.1.3 Setting the maximum flow temperature ................. 54
11.1.4 Setting the return flow temperature control ......... 54
11.1.5 Burner anti-cycling time .............................................. 54
11.1.6 Setting the maintenance interval ............................ 55
11.1.7 Setting the pump output ............................................. 55
11.1.8 Setting the by-pass valve ............................................ 55
11.2 Handing over the boiler to the operator ................. 56
12 Inspection and maintenance ....................................57
12.1 Inspection and maintenance intervals ......................57
12.1.1 General inspection and maintenance instructions 57
12.1.2 Safety instructions ....................................................... 58
12.1.3 Checking the CO/CO
2
ratio and the CO
2
concentration ................................................................. 58
12.1.4 Adjusting the CO
2
concentration (or the air ratio) 59
12.1.5 Performing the gas family check .............................. 60
12.2 Inspection and maintenance work steps ...................61
12.2.1 Filling the boiler and the heating installation .........62
12.2.2 Draining the boiler ........................................................62
12.2.3 Draining the entire heating installation ..................62
12.3 Using the function menu .............................................62
12.3.1 Carrying out electronics self-tests ............................62
12.4 Carrying out maintenance work .................................62
12.4.1 Removing the compact thermal module ..................62
12.4.2 Cleaning the heat exchanger ..................................... 64
12.4.3 Checking the burner .................................................... 64
12.4.4 Cleaning the condensate siphon ............................... 64
12.4.5 Clean the filter in the cold water inlet
(VUW boilers only) ........................................................ 65
12.4.6 Installing the compact thermal module .................. 65
12.4.7 Checking the charge pressure of the expansion
vessel ............................................................................... 66
12.5 Checking the gas flow pressure ................................ 66
12.5.1 Checking CO
2
content .................................................. 66
13 Troubleshooting ............................................................67
13.1 Contact Vaillant Service Solutions
(0870 6060 777) ...........................................................67
13.2 Performing diagnostics ................................................67
13.2.1 Call up Live Monitor (status codes) ...........................67
13.2.2 Status codes – Overview ..............................................67
13.2.3 Service messages ......................................................... 68
13.2.4 Calling up diagnosis levels .......................................... 68
13.2.5 Reading off the fault codes ........................................ 68
13.2.6 Querying the fault memory ........................................ 68
13.2.7 Reset fault memory ...................................................... 68
13.2.8 Overview of fault codes ............................................... 69
13.3 Using the function menu ..............................................71
13.4 Running test programs ..................................................71
13.5 Resetting parameters to factory settings .................71
14 Replacing components ...............................................72
14.1 Preparing for and completing replacement work ..72
14.1.1 Preparing for replacement work ................................72
14.1.2 Completing replacement work ....................................72
14.2 Replacing the burner ....................................................72
14.3 Replacing the fan ...........................................................73
14.4 Replacing the gas valve ................................................74
14.5 Replacing the venturi including the mass flow
sensor ...............................................................................75
14.6 Replacing the expansion vessel..................................76
14.7 Replacing the heat exchanger ....................................76
14.8 Replacing the PCB and/or the display ......................77
14.8.1 Replacing either the display or the PCB ..................78
14.8.2 Replacing the PCB and the display at the same
time ...................................................................................78
15 Decommissioning .........................................................79
15.1 Temporarily shutting down the boiler ......................79
15.2 Taking the boiler permanently out of service ........79
15.3 Disposing of the boiler .................................................79
16 Warranty and customer service .............................80
16.1 Factory guarantee .........................................................80
16.2 Vaillant Service ..............................................................80
17 Technical data ............................................................... 81
18 Glossary ......................................................................... 83
19 Appendix ........................................................................ 84
20 Benchmark Log Book ................................................. 85
Index ...........................................................................................87

Vaillant ecoTEC plus SERIES Specifications

General

Brand	Vaillant
Model	ecoTEC plus SERIES
Category	Boiler
Language	English