EasyManua.ls Logo

Vaillant ecoTEC VU 656/4 User Manual

Vaillant ecoTEC VU 656/4
56 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
For the heating engineer
Installation and maintenance instructions
ecoTEC
Gas fired wall hung high efficiency boiler
VU 656/4
GB

Table of Contents

Question and Answer IconNeed help?

Do you have a question about the Vaillant ecoTEC VU 656/4 and is the answer not in the manual?

Vaillant ecoTEC VU 656/4 Specifications

General IconGeneral
CategoryBoiler
Output65 kW
TypeCondensing
Fuel TypeNatural Gas
InstallationWall-mounted
Max. nominal heat output 80/60 °C65 kW
Modulation range20-100%
NOx class5
Protection classIPX4D
Efficiency RatingA
Heating CircuitYes
Max Operating Pressure3 bar
Efficiency98%
DHW CircuitNo

Summary

Notes on the documentation

Safety instructions and symbols

Information on safety symbols, warnings, and necessary precautions for safe operation.

Description of the boiler

Design

Overview of the boiler's internal functional components and layout.

Intended use

Details on the correct and incorrect applications of the boiler to ensure safety and prevent damage.

Type summary

Summary of boiler types, their designated countries, and permitted gas types.

Safety instructions and regulations

Safety instructions

Essential safety guidelines for installation, handling, and operation to prevent hazards.

General requirements

Covers related documents, installation site considerations, and gas/flue pipe regulations.

Electrical supply

Specifications for the required electrical connection, safety measures, and earthing.

Assembly

Scope of delivery

List and illustration of all parts included in the boiler package for installation.

Installation site

Guidelines for selecting an appropriate and safe location for boiler installation.

Dimension drawing and connection dimensions

Technical drawings showing boiler dimensions and connection points for plumbing and gas.

Mounting the boiler

Step-by-step instructions for securely mounting the boiler onto the wall.

Installation

Gas connection

Procedure for safely connecting the boiler to the gas supply, including leak checks.

Heating connection

Instructions for connecting the boiler to the heating system's flow and return pipes.

Electrical connection

Detailed guide for making the mains electrical connection, ensuring safety and compliance.

Condensate drain pipework

Guidance on installing the condensate drain system, ensuring proper fall and termination.

Start-up

Filling the system

Steps for filling the heating circuit, bleeding air, and checking system pressure.

Checking the gas setting

Procedures for verifying gas flow rate, inlet pressure, and combustion settings.

Checking the appliance function

How to perform functional checks for heating and hot water modes using status indicators.

Adapting the boiler to the heating system

Selection and setting of parameters

Guide to accessing and adjusting boiler parameters via the DIA system for system matching.

Overview of adjustable system parameters

List of parameters that can be configured to optimize boiler performance for the heating system.

Inspection and maintenance

Inspection and maintenance intervals

Schedule and scope for regular inspections and maintenance to ensure boiler safety and longevity.

Inspection and maintenance work steps

Detailed checklist of annual and periodic tasks for boiler inspection and maintenance.

Maintenance of the compact thermal module

Procedures for dismounting, cleaning, and checking the boiler's compact thermal module.

Troubleshooting

Status codes

Explanation of status codes displayed by the boiler indicating its current operating condition.

Diagnosis codes

Guide to accessing diagnostic codes for detailed system information and parameter adjustments.

Fault codes

List of error codes displayed by the boiler and their potential causes and solutions.

Test programs

Instructions for activating special test programs for bleeding, load testing, and safety checks.

Replacing components

Safety instructions

Critical safety precautions to be followed before and during component replacement.

Replacing the burner

Step-by-step guide for safely removing and installing a new burner component.

Replacing electronics and display

Procedures for replacing the boiler's electronic control unit and display module.

Vaillant Service

Recycling and disposal

Boiler

Information on the proper disposal of the boiler and its packaging materials.

Technical data

Related product manuals