Need help?Do you have a question about the Vaillant 837 E and is the answer not in the manual?
Provides essential safety and general information for installation and servicing.
Covers system requirements, siting, and general boiler notes.
Details the EC Mark and compliance with relevant directives.
Provides detailed technical specifications for various boiler models.
Illustrates connections and functional flow for turboMAX and thermoCOMPACT models.
Lists relevant standards and regulations for boiler installation.
Covers siting, flue systems, air supply, and electrical connection guidelines.
Details water circulation, filling, pressure, expansion vessel, pump, and venting.
Outlines general requirements for boiler location, template use, and bracket fitting.
Details installing flue, fitting boiler, gas, water, and electrical connections.
Covers electronic board layout, external controls, and main supply connection.
Covers preliminary electrical checks, gas supply, and system filling procedures.
Details adjustments for gas pressure, burner, output, ignition, and mid-setting points.
Covers overall functional checks and interpreting indicator lights.
Explains pump speed adjustment and final handover procedures.
Outlines initial checks to be performed before maintenance.
Details the procedure for cleaning the burner and heat exchanger.
Introduces diagnostic display, indicator lights, and fault finding modes.
Covers logical procedures, status modes, diagnostic modes, fault codes, and memory.
Provides flowcharts for diagnosing faults related to electrical, pump, fan, controls, flue, gas, and burner.
Shows the functional flow of components for turboMAX plus and thermoCOMPACT models.
Provides the electrical wiring schematics for turboMAX plus and thermoCOMPACT boilers.
Explains document symbols, intended use, and EC compliance.
Covers essential safety precautions and terms of the factory guarantee.
Identifies operating controls, display elements, and indicator lights.
Covers initial checks, DHW, warmstart, heating, external controls, and shutdown procedures.
Addresses common problems like boiler failure, no central heating, and status displays.
Lists the turboMAX and thermoCOMPACT models covered by the catalogue.
Provides a guide to the main components illustrated in the diagrams.
Illustrates and lists parts for specific components like burner, gas section, heat exchanger, etc.
To Next Page
General