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General| Category | Boiler |
|---|---|
| Output | 46 kW |
| Fuel Type | Natural Gas / LPG |
| Efficiency | Up to 98% |
| Mounting | Wall-mounted |
| Max. operating pressure | 3 bar |
| Model | eco TEC VU 466/4 |
| Type | Condensing boiler |
Explanation of safety instructions for installation and symbols used in the manual for hazard identification.
Defines the intended use of the ecoTEC boiler for central heating installations and warns against improper use.
Details the importance of using genuine Vaillant air/flue gas ducts for system certification and safe operation.
Provides details on flue terminal positioning to ensure free dispersion of combustion products and avoid nuisance.
Specifies requirements for a 230 V, 50 Hz supply, fused to 3 Amp, and the need for isolation means.
Provides safety instructions for choosing a boiler location, avoiding frost and aggressive atmospheres.
Describes how to mount the boiler on the wall using the hanging bracket, ensuring load-bearing capacity.
Details the procedure for safely connecting the boiler to the gas supply via a gas isolation valve.
Provides instructions for the mains electrical connection, emphasizing safety and compliance with regulations.
Guides on filling the heating installation, including preparation of heating water and bleeding procedures.
Instructs to fill the condensate siphon with water before start-up to prevent poisoning from escaping flue gases.
Details checks for gas setting integrity, including flue gas installation, combustion circuit seals, and gas flow.
Explains how to measure and verify the gas flow rate against specified values for correct operation.
Describes checking the gas inlet working pressure at full load to ensure compliance with requirements.
Outlines performing a function check before handover, covering heating and hot water generation.
Describes entering diagnosis mode to change parameters for matching the boiler to the heating installation.
Highlights the risk of injury and damage from neglected inspection and maintenance, requiring annual checks.
Emphasizes using genuine Vaillant spare parts and checking combustion circuit integrity during maintenance.
Explains when CO2 concentration checks are required, such as after gas valve replacement or suspected incorrect combustion.
Details how to adjust the CO2 concentration using the main throttle screw if values are outside acceptable ranges.
Provides a detailed checklist of annual and periodic inspection and maintenance tasks for the boiler.
Outlines final checks after maintenance, including gas/water leaks, flue system, burner performance, and documentation.
Details how to access and change parameters in diagnosis mode for displaying information or adjusting settings.
Describes how fault messages are displayed and what to do when failures occur, including contacting customer service.
Emphasizes safety precautions for replacing components, including disconnecting power and using new seals.
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