HVAC / Parts & Accessories
Service Manual for Viessmann Vitorondens 200-T Oil Condensing Boiler
Professional service manual for the Viessmann Vitorondens 200-T oil condensing boiler. This guide covers commissioning, inspection, maintenance procedures, spare parts lists, and technical specifications for authorized professionals.
Quick answers from the manual
Quick answer
- This is a service manual for the Viessmann Vitorondens 200-T oil condensing boiler. It provides instructions for commissioning, inspection, maintenance, and spare parts identification for authorized professionals. p. 1, 6, 7
Key actions
- Filling the heating system p. 8
- Cleaning heating surfaces p. 9, 10, 11
- Checking safety devices p. 14
First start
- Commissioning must be performed by the installer or an authorized professional. p. 3
Technical specifications
| Parameter | Value | Meaning | Pages |
|---|---|---|---|
| Heat Output (50/30 °C) | 20.2 - 53.7 kW | Rated heat output range | p. 24 |
Where to find it in the PDF
- Safety Instructions p. 3, 4, 5
- Commissioning and Maintenance Steps p. 7
- Spare Parts Lists p. 16, 17, 18, 19
- Technical Data p. 24
Table of contents
Manual images
Click an image to enlargeQuick Guide for Professionals
This document is a service manual intended exclusively for authorized professionals. It provides essential procedures for the commissioning, inspection, and maintenance of the Viessmann Vitorondens 200-T oil condensing boiler. Always adhere to local safety regulations and use original Viessmann spare parts.
Safety Instructions
In case of gas smell: Close the gas shut-off valve, open windows and doors, evacuate the area, and notify the gas and electricity utility companies from outside the building. Do not operate any electrical switches or open flames.
In case of water leakage: Switch off the heating system at the external disconnect (e.g., fuse box) and do not touch hot water.
General Safety: Always switch off the system and allow it to cool before maintenance. Use appropriate personal protective equipment. Avoid contact with condensate.
Commissioning, Inspection, and Maintenance
The manual outlines 24 specific steps for servicing the boiler, including:
- Filling the heating system.
- Venting the boiler.
- Cleaning heating surfaces.
- Checking seals and insulation.
- Checking the neutralization system or activated carbon filter.
- Checking the condensate drain and siphon.
- Checking safety devices and pressure.
- Adjusting the burner.
Filling the Heating System
Before filling, ensure the system is depressurized. Use only water of drinking water quality. If water hardness exceeds 16.8 °dH, it must be softened. Follow the specific steps for filling via the heating return or the small distributor (Zubehör), ensuring the bypass valve is managed correctly.
Cleaning Heating Surfaces
Do not use wire brushes or sharp objects, as these can damage the heating surfaces. Use plastic brushes if necessary. For stubborn residues, use solvent-free cleaning agents. Ensure no cleaning agent enters between the boiler body and the thermal insulation.
Spare Parts
The manual includes detailed exploded-view diagrams and parts lists for the boiler body, heat exchanger (for different power outputs), and thermal insulation. When ordering parts, provide the serial number (Herstell-Nr.) found on the type plate.
Technical Data
The boiler is available in various power outputs ranging from 20.2 kW to 53.7 kW. The manual provides detailed tables for electrical power consumption and flue gas temperatures based on return temperatures.
Manufacturer information
Viessmann Climate Solutions
Practical help
Common problems
Gas smell
Close gas shut-off valve, open windows, evacuate, and call emergency services from outside.
Water leakage
Switch off the heating system at the external disconnect and do not touch hot water.
Condensate contact
Avoid skin and eye contact; do not ingest.
Static discharge risk
Touch a grounded object (e.g., heating pipe) before working on electronic components.
Before use
- Ensure the system is switched off and cooled down.
- Close the gas shut-off valve.
- Use appropriate personal protective equipment.
- Ensure the system is depressurized before maintenance.
- Have original Viessmann spare parts ready.
Specs in practice
- Nenn-Wärmeleistung
- Rated heat output in kW.
- Elektrische Leistungsaufnahme
- Electrical power consumption in Watts.
- Verfügbarer Förderdruck
- Available delivery pressure in Pa/mbar.
Images and diagrams
- Abb. 1/2: Procedures for filling the heating system.
- Abb. 5: Instructions for opening the boiler door.
- Abb. 9: Disconnecting the neutralization system.
- Abb. 12: Checking the diaphragm expansion vessel pressure.
- Abb. 13-17: Exploded views for spare parts identification.
Model compatibility
- Intended for authorized professionals only.
- Use only original Viessmann spare parts.
- Follow local installation and safety regulations (DIN, EN, DVGW, etc.).
Manual page author
Michael Turner
Technical manual editor
Reviews PDF manuals for structure, safety notes, and practical product details so readers can find the right information quickly.