Do you have a question about the Vaillant ecoTEC VU 656/4 and is the answer not in the manual?
Category | Boiler |
---|---|
Output | 65 kW |
Type | Condensing |
Fuel Type | Natural Gas |
Installation | Wall-mounted |
Max. nominal heat output 80/60 °C | 65 kW |
Modulation range | 20-100% |
NOx class | 5 |
Protection class | IPX4D |
Efficiency Rating | A |
Heating Circuit | Yes |
Max Operating Pressure | 3 bar |
Efficiency | 98% |
DHW Circuit | No |
Information on safety symbols, warnings, and necessary precautions for safe operation.
Overview of the boiler's internal functional components and layout.
Details on the correct and incorrect applications of the boiler to ensure safety and prevent damage.
Summary of boiler types, their designated countries, and permitted gas types.
Essential safety guidelines for installation, handling, and operation to prevent hazards.
Covers related documents, installation site considerations, and gas/flue pipe regulations.
Specifications for the required electrical connection, safety measures, and earthing.
List and illustration of all parts included in the boiler package for installation.
Guidelines for selecting an appropriate and safe location for boiler installation.
Technical drawings showing boiler dimensions and connection points for plumbing and gas.
Step-by-step instructions for securely mounting the boiler onto the wall.
Procedure for safely connecting the boiler to the gas supply, including leak checks.
Instructions for connecting the boiler to the heating system's flow and return pipes.
Detailed guide for making the mains electrical connection, ensuring safety and compliance.
Guidance on installing the condensate drain system, ensuring proper fall and termination.
Steps for filling the heating circuit, bleeding air, and checking system pressure.
Procedures for verifying gas flow rate, inlet pressure, and combustion settings.
How to perform functional checks for heating and hot water modes using status indicators.
Guide to accessing and adjusting boiler parameters via the DIA system for system matching.
List of parameters that can be configured to optimize boiler performance for the heating system.
Schedule and scope for regular inspections and maintenance to ensure boiler safety and longevity.
Detailed checklist of annual and periodic tasks for boiler inspection and maintenance.
Procedures for dismounting, cleaning, and checking the boiler's compact thermal module.
Explanation of status codes displayed by the boiler indicating its current operating condition.
Guide to accessing diagnostic codes for detailed system information and parameter adjustments.
List of error codes displayed by the boiler and their potential causes and solutions.
Instructions for activating special test programs for bleeding, load testing, and safety checks.
Critical safety precautions to be followed before and during component replacement.
Step-by-step guide for safely removing and installing a new burner component.
Procedures for replacing the boiler's electronic control unit and display module.
Information on the proper disposal of the boiler and its packaging materials.