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Installation and maintenance instructions ecoTEC plus 0020116700_01 11

Safety

tems, is preset to 3 bar and is fitted with a 15 mm compres-

sion connection for the discharge pipe, whose diameter

must not be less than 15 mm. The pressure relief valve must

not be used for draining purposes.

2.5.9 Venting

The boiler is fitted with an automatic air vent. Other meas-

ures need to be taken to allow the heating system to be

either automatically or manually vented during filling and

during commissioning.

Default Chapter1
- Ecotec Plus1
- Table of Contents2
1 Notes on the Documentation4
- Storing Documents4
- Symbols Used4
- Applicability of the Instructions4
- Identification Plate4
- CE Label4
- Benchmark5
- Type Overview5
2 Safety6
- Safety and Warning Information6
- Classification of Warnings6
- Structure of Warnings6
- Intended Use6
- Basic Safety Instructions6
- Important Information Regarding Propane-Fired Boilers7
- General Requirements8
- Related Documents8
- Installation Site8
- Gas Supply9
- Air Supply9
- Compartment Ventilation9
- Electrical Supply9
- Water Circulation System9
- Pressure Relief Valve10
- Venting11
3 Description of the Appliance12
- Before Proceeding - Ensure Boiler Is Correct for Gas Group Supplied13
4 Installation13
- Accessories13
- Controller13
- Installation and Operation13
- Scope of Delivery13
- Unpacking the Boiler13
- Checking the Scope of Delivery13
- Disposing of the Packaging14
- Transporting the Appliance14
- Requirements for the Installation Site16
- Required Minimum Clearances/Installation Clearances16
- Using Installation Templates16
- Dimension Drawing and Connection Measurements18
- Wall-Mounting the Boiler19
- Removing/Fitting the Front Casing19
- Removing/Fitting the Side Section20
5 Gas Installation21
- Preparing for Installation21
- Connecting the Gas Pipe21
6 Hydraulic Installation22
- Preparing for Installation22
- Connecting the Hot and Cold Water (VUW Boiler)23
- Connecting the Domestic Hot Water Cylinder23
- Connecting the Heating Flow and Heating Return23
- VUW Boiler23
- VU Boiler23
- Low Loss Header23
- Connecting the Condensate Discharge Pipework23
- Connecting the Discharge Pipe to the Expansion Relief Valve on the Boiler24
7 Flue Gas Installation25
- Air/Flue Gas Duct25
- Flue Termination26
8 Electrical Installation28
- Preparing for Installation28
- Opening/Closing the Electronics Box28
- Establishing the Mains Connection28
- Connecting the Controller29
- Fitting the Controller29
- Connecting Controllers to the Electronic System30
- Connecting Additional Devices30
- Connecting the Auxiliary Relay (Grey Connector on PCB) (Only Ecotec 637/837)30
- Connect VR 40 - "2 from 7" Multi-Functional Module31
- Actuating the Circulation Pump Demand-Controlled31
- Installing the Circulation Pump31
- Connection Diagrams32
  - Ignition Electrode33
  - Mains Connection34
9 Operation36
- Calling up the Installer Level36
- Overview of the Menu Structure37
10 Start-Up39
- Switching on the Boiler39
- Installation Assistant39
- Language39
- Filling Mode39
- Purging39
- Target Feed Temperature39
- Hot Water Temperature40
- Comfort Mode40
- Heating Partial Load40
- Auxiliary Relay and Multi-Functional Module40
- Competent Person Telephone Number40
- Terminating the Installation Assistant40
- Restarting the Installation Assistant40
- Appliance Configuration and Diagnosis Menu40
- Using Test Programs40
- Preparing the Heating Water41
- Read off the Filling Pressure41
- Filling and Purging the Heating Installation41
- Filling the Heating Installation42
- Purging the Heating System42
- Flushing the System for the First Time ("Cold")42
- Avoiding Low Water Pressure43
- Top up VUW Boilers Using a Filling Device43
- Fill and Purge the Hot Water System43
- Filling the Condensate Siphon43
- Checking the Gas Setting44
- Factory Setting44
- Checking for Tightness of the Flue Gas Installation and Flue Gas Recirculation44
- Checking the Gas Flow Rate45
- Checking the Gas Inlet Working Pressure45
- Carrying out a Full Function Test46
- Checking the Heating Mode47
- Checking Hot Water Generation (VUW Boilers Only)47
- Checking Hot Water Generation (VU Boilers Only)47
- Dhw Mode47
- Final Flush of the Heating System ("Hot")48
11 Adapting the Boiler to the Heating Installation49
- Diagnosis Codes - Overview49
- Setting the Heating Partial Load53
- Setting Pump Overrun Time and Pump Operating Mode53
- Setting the Maximum Flow Temperature54
- Setting the Return Flow Temperature Control54
- Burner Anti-Cycling Time54
- Setting the Maintenance Interval55
- Setting the Pump Output55
- Setting the By-Pass Valve55
- Handing over the Boiler to the Operator56
12 Inspection and Maintenance57
- Inspection and Maintenance Intervals57
- General Inspection and Maintenance Instructions57
- Safety Instructions58
- Checking the CO/CO Ratio and the CO Concentration58
- Adjusting the CO59
- Concentration (or the Air Ratio)59
- Performing the Gas Family Check60
- Inspection and Maintenance Work Steps61
- Filling the Boiler and the Heating Installation62
- Draining the Boiler62
- Draining the Entire Heating Installation62
- Using the Function Menu62
- Carrying out Electronics Self-Tests62
- Carrying out Maintenance Work62
- Removing the Compact Thermal Module62
- Cleaning the Heat Exchanger64
- Checking the Burner64
- Cleaning the Condensate Siphon64
- Clean the Filter in the Cold Water Inlet (VUW Boilers Only)65
- Installing the Compact Thermal Module65
- Checking the Charge Pressure of the Expansion Vessel66
- Checking the Gas Flow Pressure66
- Checking CO 2 Content66
13 Troubleshooting67
- Contact Vaillant Service Solutions (0870 6060 777)67
- Performing Diagnostics67
- Call up Live Monitor (Status Codes)67
- Status Codes - Overview67
- Service Messages68
- Calling up Diagnosis Levels68
- Reading off the Fault Codes68
- Querying the Fault Memory68
- Reset Fault Memory68
- Overview of Fault Codes69
- Using the Function Menu71
- Running Test Programs71
- Resetting Parameters to Factory Settings71
14 Replacing Components72
- Preparing for and Completing Replacement Work72
- Preparing for Replacement Work72
- Completing Replacement Work72
- Replacing the Burner72
- Replacing the Fan73
- Replacing the Gas Valve74
- Replacing the Venturi Including the Mass Flow Sensor75
- Replacing the Expansion Vessel76
- Replacing the Heat Exchanger76
- Replacing the PCB And/Or the Display77
- Replacing Either the Display or the PCB78
- Replacing the PCB and the Display at the same Time78
15 Decommissioning79
- Temporarily Shutting down the Boiler79
- Taking the Boiler Permanently out of Service79
- Disposing of the Boiler79
16 Warranty and Customer Service80
- Factory Guarantee80
- Vaillant Service80
17 Technical Data81
18 Glossary83
19 Appendix84
20 Benchmark Log Book85
- Service Record86
- Index87

Model	ecoTEC plus SERIES
Mounting	Wall-mounted
Fuel Type	Natural Gas / LPG
ErP Heating Efficiency Class	A
NOx Class	5
Category	Boiler
Type	Condensing
Efficiency	Up to 94%
ErP Water Heating Efficiency Class	A

Vaillant ecoTEC plus SERIES Installation And Maintenance Instructions

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