HVAC / Heat Pumps
Service Instructions for Viessmann Vitodens 200-W B2HA Boiler
Comprehensive service and installation guide for the Viessmann Vitodens 200-W B2HA gas-fired condensing boiler. Includes start-up procedures, coding, troubleshooting, and maintenance.
Quick answers from the manual
Quick answer
- This manual provides service instructions for the Vitodens 200-W B2HA boiler, including installation, start-up, maintenance, and troubleshooting for heating contractors. p. 1, 4
Key actions
- Perform initial start-up p. 7, 12
- Check CO2 settings p. 31
First start
- Use the start-up wizard p. 12
Problems and fixes
Fault F9
Check the fan, fan connecting cables, and power at the fan.
p. 22, 83Error codes
| Code | Meaning | Action | Pages |
|---|---|---|---|
| F2 | Fixed high limit switch open (activated) | Check heating system fill level, circulation pump, and bleed air from the system. | p. 83 |
Maintenance and reset
- Reset service display p. 42, 73
Technical specifications
| Parameter | Value | Meaning | Pages |
|---|---|---|---|
| Heating input | 113 to 530 MBH | Heating capacity range | p. 1 |
| Max operating pressure | 80 psig | Maximum system pressure | p. 16, 103 |
Where to find it in the PDF
- Safety Requirements p. 2, 3
- Start-up Wizard p. 12, 13, 14
- Service/Maintenance p. 24, 25, 26, 27
- Fault Codes p. 77, 78, 79, 80
Table of contents
Manual images
Click an image to enlargeQuick guide from the manual
This document provides essential service and installation instructions for the Viessmann Vitodens 200-W B2HA boiler. It is intended for use by licensed professional heating contractors. Always ensure all safety requirements are met before beginning any installation or service work.
Safety and Installation
Installation, adjustment, service, and maintenance must be performed by a licensed professional heating contractor. Ensure the boiler is installed in a location with adequate fresh air and free from contaminated air (e.g., chemicals, dust). The boiler must be installed in accordance with local codes and regulations.
Start-up Procedures
The boiler features a start-up wizard to guide the initial configuration. Key steps include:
- Accessing the Interface: Unlock and slide open the user interface programming unit covers.
- Start-up Wizard: Set language, time/date, temperature units, DHW setpoint, and zone circuit configurations.
- Filling the System: Ensure the heating system is flushed, then fill with water until air is removed.
- Gas Type Selection: The boiler is factory-set for natural gas. Conversion to liquid propane gas requires specific coding changes (address 82).
Maintenance and Service
Regular maintenance is required to ensure safe and efficient operation. Key maintenance tasks include:
- Removing Front Panel: Loosen bottom screws and slide out the panel.
- Condensate Trap: Clean debris from the condensate trap and refill with water.
- Heat Exchanger: Clean the combustion chamber and heat exchanger surface.
- Electrodes: Check and clean ignition and ionization electrodes; replace if worn.
- CO2 Settings: Perform combustion analysis at the vent pipe adaptor to ensure optimal CO2/O2 levels.
Troubleshooting
The boiler control unit displays fault codes in the event of an issue. Common faults include:
- F9: Fan speed too low during start-up. Check fan, cables, and power.
- F2: Fixed high limit switch open. Check system pressure, circulation pump, and bleed air.
- EE: Flame signal missing or weak at start. Check gas supply and ionization electrode.
Technical Data
The boiler supports heating inputs from 113 to 530 MBH (33 to 150 kW). Maximum operating pressure is 80 psig (5.5 bar). Refer to the technical data section for detailed specifications and wiring diagrams.
Manufacturer information
Viessmann Climate Solutions
Practical help
Common problems
Boiler not starting
Check gas supply, ensure the burner is reset, and check for active fault codes on the display.
Condensate not draining
Clean the condensate trap of any debris and ensure it is properly reinstalled and filled with water.
High limit fault (F2)
Check the heating system fill level, ensure the circulation pump is operating, and bleed air from the system.
Before use
- Ensure the main gas supply valve is open.
- Verify the heating system pressure is between 14 and 23 psig.
- Ensure the venting system is properly installed and leak-free.
- Confirm the fresh air supply is adequate for safe operation.
- Check that all electrical connections are secure.
Specs in practice
- Heating input
- The capacity range of the boiler, 113 to 530 MBH (33 to 150 kW).
- Max operating pressure
- The maximum pressure the system can safely handle, 80 psig (5.5 bar).
- CO2 range (Natural Gas)
- Optimal combustion range is 7.5% to 10.5%.
Images and diagrams
- Wiring diagram is located on page 95.
- Parts lists for various assemblies are found on pages 98-102.
Model compatibility
- Compatible with Natural Gas and Liquid Propane Gas.
- Requires a licensed professional heating contractor for all installations and service.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.