Viessmann Vitodens 300 User Manual

VIESMANN
Service instructions
for heating engineers
Vitodens 300
Type WB3A, 6.6 to 35.0 kW
Gas fired wa ll mounted con densing boil er
natural gas and LPG version
See applicability on the last page
VITODENS 300
5692 537 GB 6/2004 Please k eep safe

Viessmann Vitodens 300 Specifications

General

Type	Condensing Boiler
Heat Exchanger	Stainless Steel Inox-Radial
Mounting	Wall-mounted
Efficiency	Up to 98%
Fuel Type	Natural Gas or Propane
Control	Vitotronic Control Unit

Summary

Safety Instructions

Safety Instructions Explained

Details symbols and warnings for safe operation.

Gas Leak and Flue Gas Procedures

Procedures for gas leaks and flue gas detection.

Safe Service and Repair Practices

Initial Setup and Operational Procedures

Initial Start-up, Inspection, and Maintenance Overview

Overview of key procedures for initial setup.

System Filling and Venting

Step-by-step guide for filling and venting.

Venting the Boiler

Venting the Heating System

Gas Type and Pressure Checks

Burner and Flue System Checks

Ignition and Ionisation Electrode Checks

Control Unit Matching and System Designs

Heating Curve and Temperature Adjustments

Coding and Parameter Settings

Code 1 Parameters and Access

Accessing and modifying first set of coding parameters.

Code 2 Parameters and Access

Accessing and modifying second set of coding parameters.

Resetting to Factory Defaults

Restoring system to delivered condition.

Service Scans and Diagnostics

Temperature, Boiler Coding, and Brief Scans

Checking Outputs (Relay Test)

Scanning Operating Conditions and Sensors

Monitoring real-time system parameters.

Troubleshooting and Repairs

Fault Code History and Current Faults

Retrieving and displaying error logs.

Fault Checking and Acknowledgment

Procedures for identifying and clearing faults.

Specific Component Repair Procedures