HVAC / Heat Pumps
Installation and Operating Guide for Viessmann Vitodens 200-W Gas Condensing Boiler
Comprehensive installation and technical guide for the Viessmann Vitodens 200-W high output gas condensing boiler. Includes cascade system configurations, technical specifications, control unit settings, and accessory installation details.
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The Viessmann Vitodens 200-W is a high-output gas condensing boiler designed for commercial applications. It is available in 49, 60, 80, 99, 120, and 150 kW models. The system supports cascade configurations of up to 6 units, providing a maximum output of 594 kW to 900 kW depending on the model range. This guide covers installation, cascade setup, control unit operation, and technical specifications.
Product Overview
The Vitodens 200-W features advanced components for efficiency and reliability:
- MatriX cylinder burner: Patented technology with a 1:5 modulation range for clean combustion and quiet operation.
- Inox-Radial heat exchanger: Made from high-grade stainless steel (type SS 1.4571) for corrosion resistance and long-term reliability.
- Lambda Pro combustion controller: Automatically adjusts for fluctuating gas composition and air pressure, eliminating the need for nozzle changes when converting to LPG.
Installation and Cascade Systems
The boiler is designed for easy installation, with compact dimensions and optional cascade frames. Cascade systems allow for row, block, or corner installations. The mounting frames feature height adjustment (150 mm increments) to accommodate plant rooms with limited headroom. Pre-assembled heating circuit connection sets are available to reduce installation time by up to 50%.
Controls and Accessories
The system utilizes the Vitotronic 200 control unit for weather-compensated operation. It supports remote data communication, solar/heat pump interfaces, and safety monitor sensors. Various accessories are available, including:
- Divicons: Local circuit pump assemblies with or without mixers.
- Pump connection sets: Compact sets for single boiler use, including low loss headers and high-efficiency circulation pumps.
- Wireless controls: Vitotrol 100, 200 RF, and 300 RF units for remote temperature management.
Technical Specifications
Key technical parameters include:
- Gas supply pressure: 17 mbar (Natural gas) / 32 mbar (LPG).
- Operating pressure: Up to 4 bar (49-99 kW models) or 6 bar (120-150 kW models).
- Efficiency: Gross efficiency up to 98%.
- Noise emission: Less than 39-40 dB(A).
Manufacturer information
Viessmann Climate Solutions
Practical help
Common problems
Wireless communication issues
Use a wireless repeater to circumvent large metallic objects or iron-reinforced concrete walls. Do not use more than one repeater per Vitotronic.
High gas supply pressure
If the gas supply pressure exceeds the maximum permissible value, install a separate gas pressure governor upstream of the system.
Before use
- Ensure the boiler model (49-150 kW) is suitable for the application.
- Verify gas supply pressure (Natural gas: 17-17.4 mbar, LPG: 32 mbar).
- Check flue system requirements based on output.
- Confirm if a cascade system is required (up to 6 units).
- Ensure all required supply cables are routed to the boiler area.
Specs in practice
- Modulation range
- 1:5 ratio allows the boiler to adjust output efficiently based on demand.
- Gross efficiency
- Up to 98% efficiency indicates high energy conversion from fuel to heat.
- Operating pressure
- Maximum system pressure the boiler can withstand (4 or 6 bar).
Images and diagrams
- Cascade frame diagrams show height adjustment options in 150mm increments.
- Wiring and connection diagrams illustrate flow/return and sensor placement.
- Flue gas cascade diagrams show twin, triple, quad, five, and six-boiler configurations.
Model compatibility
- Compatible with Viessmann and third-party external controls.
- Suitable for buildings with up to 18 floors (120/150 kW models).
- Compatible with LPG conversion without nozzle changes.
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.