For the ownerOperating manualecoTEC plus 937VUIGBGas condensing storage combination boiler

ecotec plus

Notes on the documentation

Modifications to the boiler and its environment

Instructions on operation

Operation

4.2 Measures prior to commissioning

Setting the hot water temperature

Storage tank charging mode

Heating operation

Troubleshooting

De-commissioning

Vaillant ecoTEC plus 937 Operating Manual

Safety

Care

Measures prior to commissioning

Start-up

Switching on/off the warmstart function

Drawing off the hot water

Switching heating mode off (summer mode)

ecoTEC plus 937

Introduction

CE label

Unit description, data and dimensions

Dimensions

Structure and functional elements

Functional description

General requirements

Scope of supply and accessories

Gas supply

Optional 125 mm flue pipe

Air supply

System requirements

Shift load storage tank expansion vessel

Sequence of operations during installation

Required minimum gaps/assembly clearances

Flue exit

Mounting the combination boiler

Gas connection

Cold water supply and hot water outlet

Condensate drain

Installing the pressure relief discharge pipework

Electrical connection

Connection to the power supply

Wiring diagrams

Control units

Heating pump

Commissioning, Part I

Filling device for ecoTEC plus 937

Initial flushing of the system ("cold")

Checking the gas supply

Fitting the front casing

Functional checks

Storage tank charging

Handing over the device to the owner

Inspection and maintenance

Maintenance

Function check of the combination boiler

Cleaning the integral condensation heat-exchanger

Checking the burner

Cleaning the condensate siphon

Checking filling pressure of the expansion vessel of the combination boiler

Re-commissioning the combination boiler

Diagnostic codes

Second diagnostic level

Error codes

Resetting the parameters to factory settings

Replacing components

Replacing the expansion vessel

Replacing the primary heat exchanger

Replacing the expansion vessel of the shift load storage tank

Replacing the aqua sensor

Replacing the electronics and the display on the combination boiler

Recycling and disposal

EC declaration of conformity

Pressure relief valve

Removing the front case

Storage tank pressure relief discharge pipework

Connection the power supply

Checking the filling pressure of the heating system

Vaillant warranty

Overview of inspection and maintenance tasks

Test mode

Test programmes

Replacing the storage tank pump of the shift load storage tank

recycling and disposal

ec declaration of conformity


Contents ecotec plus Table Of Contents Notes on the documentation Modifications to the boiler and its environment Instructions on operation Operation 4.2 Measures prior to commissioning Setting the hot water temperature Storage tank charging mode Heating operation Troubleshooting De-commissioning	For the ownerOperating manualecoTEC plus 937VUIGBGas condensing storage combination boiler Next / 16