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Vaillant VUW 306/6-3 User Manual

Vaillant VUW 306/6-3
48 pages
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Installation and maintenance instructions
ecoFIT sustain
825 - 835
GB, IE
Publisher/manufacturer
Vaillant GmbH
Berghauser Str. 40 D-42859 Remscheid
Tel. +492191180 Fax +492191182810
info@vaillant.de www.vaillant.de

Table of Contents

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Vaillant VUW 306/6-3 Specifications

General IconGeneral
Fuel TypeNatural Gas / LPG
ErP efficiency class (heating)A
ErP efficiency class (DHW)A
Weight36 kg
Efficiency94%
TypeWall-mounted boiler
DHW Output30 kW

Summary

Safety Information

Action-Related Warnings

Classifies action-related warnings by severity using warning signs and signal words.

Intended Use

Defines the product's intended purpose and restrictions for safe operation.

General Safety Information

Provides essential safety guidelines, including risks from inadequate qualifications and escaping gas.

Set-up Procedures

Transporting the Unit

Provides guidance on safely lifting and transporting the unit, noting its weight.

Installation Clearances and Mounting

Wall-mounting the Product

Details the procedure and considerations for wall-mounting the product.

Side Section Installation and Initial Installation Steps

Gas and Water Connections

Details precautions and procedures for making gas and water connections.

Pipework Connections

Connecting the Condensate Discharge Pipe

Guides on connecting the condensate discharge pipe, including material suitability and drainage requirements.

Electrical Installation Procedures

Establishing the Power Supply

Details steps for safely establishing the product's power supply.

Installer Level and Start-up Procedures

Initial Start-up Procedure

Outlines the process for initial start-up, requiring a checklist.

Start-up Checks and Water Management

Heating Water and Filling Water Checks

Details procedures for checking heating water quality and treating it.

Avoiding Danger from Insufficient Water Pressure

Warns about risks related to insufficient water pressure and how to avoid them.

Start-up Operations

Filling and Purging the Heating Installation

Step-by-step guide for filling and purging the heating installation.

Checking the Gas Flow Rate

Describes how to check the gas flow rate using check programme P.01.

Gas Setting and Leak-Tightness Checks

Checking the Gas Setting

Details checks related to the gas setting and gas connection pressure.

Checking Leak-Tightness

Instructions for checking the leak-tightness of the system.

Adapting to Heating Installation

Setting the Pump Output

Explains how to adjust the speed-regulated pump output.

Domestic Hot Water and Handover

Setting the Domestic Hot Water Temperature

Instructions for setting the domestic hot water temperature, including legionella prevention.

Handing the Product Over to the End User

Provides guidance on completing the handover process to the end user.

Troubleshooting Procedures

Eliminating Faults

Guides on identifying and resolving faults using check programmes and fault messages.

Preparing the Repair Work

Outlines essential safety steps before undertaking repair work.

Product Checks and Maintenance Tasks

Checking the Product for Leak-Tightness

Instructions for verifying the product's leak-tightness.

Inspection and Maintenance Details

Checking the CO2 Content

Procedures for checking and setting the CO2 content.

Setting the CO2 Content

Details how to adjust the CO2 content if it is outside the specified range.

Decommissioning and Customer Service

Appendix Contents

Overview of Diagnostics Codes

Lists and explains various diagnostics codes for product parameters.

Status Codes Overview

Provides an overview of status codes displayed during heating and DHW modes.

Overview of Fault Codes

Lists fault codes, their meanings, and possible causes.

Wiring Diagram: Combi Boiler

Illustrates the wiring connections for the combi boiler.

Wiring Diagram: Combi Boiler (35 kW)

Shows the wiring diagram specifically for the 35 kW combi boiler model.

Inspection and Maintenance Work Schedule

Lists required inspection and maintenance tasks and their intervals.

Commissioning Checklist

Provides a checklist for commissioning the boiler to ensure compliance and warranty activation.

Technical Data

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