Introduction
This manual provides essential information for the safe and efficient operation of your Viessmann Vitotronic 100 Hc1 Control unit. Please read this manual thoroughly before installation, setup, or operation to ensure proper use and to prevent damage or injury. Keep this manual for future reference.
Safety Information
Always observe the following safety precautions:
- Installation and service must be performed by a qualified technician.
- Disconnect power before performing any maintenance or service.
- Do not expose the control unit to moisture or extreme temperatures.
- Ensure proper grounding to prevent electrical shock.
- Refer to local codes and regulations for installation requirements.
Package Contents
Verify that all items are present in the package:
- Viessmann Vitotronic 100 Hc1 Control Unit (Model 7426 136)
- Mounting Hardware (screws, brackets)
- Installation Manual (separate document, if applicable)
- Quick Start Guide
Product Overview
The Vitotronic 100 Hc1 is a sophisticated control unit designed for Viessmann heating systems, specifically compatible with Vitodens 200-W models (WB2B-45, WB2B-60, WB2B-80, WB2B-105). It provides intuitive control over your heating system's functions.
Figure 1: Front panel of the Viessmann Vitotronic 100 Hc1 Control unit. It features a rectangular digital display at the top left, surrounded by a dark bezel. Below the display and to its right are several circular and rectangular buttons for navigation and function selection. These include 'OK', plus and minus symbols, and various mode selection buttons. The overall color of the unit is a light grey or silver.
Key Components:
- Display Screen: Shows system status, settings, and error codes.
- Navigation Buttons: Used to scroll through menus and adjust values.
- OK Button: Confirms selections.
- Mode Buttons: Selects different operating modes (e.g., heating, hot water).
Setup
This section outlines the general steps for setting up the Vitotronic 100 Hc1. For detailed wiring diagrams and specific installation instructions, refer to the separate installation manual provided with your heating system.
- Mounting: Securely mount the control unit in the designated location on your Viessmann boiler, ensuring proper ventilation and accessibility.
- Wiring: Connect the control unit to the boiler's electrical system and sensors according to the wiring diagrams. Ensure all connections are secure and correctly polarized.
- Power Connection: Once all connections are verified, apply power to the heating system. The control unit display should illuminate.
- Initial Configuration: Follow the on-screen prompts for initial setup, which may include language selection, date/time, and basic system parameters.
Operating Instructions
Basic Navigation:
- Use the arrow buttons (up/down) to scroll through menu options.
- Press the OK button to enter a menu or confirm a selection.
- Use the back button (if present, typically an arrow pointing left) to return to the previous screen.
Setting Temperature:
- Navigate to the "Temperature" or "Set Point" menu.
- Use the plus (+) and minus (-) buttons to adjust the desired heating or hot water temperature.
- Press OK to save the setting.
Changing Operating Modes:
The control unit typically offers various operating modes such as:
- Normal Operation: Standard heating and hot water.
- Reduced Operation: Lower temperature settings for energy saving.
- Hot Water Only: Heating system provides only domestic hot water.
- Holiday Mode: Maintains a minimum temperature to prevent freezing while you are away.
Select the desired mode using the dedicated mode buttons or by navigating through the "Operating Mode" menu.
Maintenance
Regular maintenance ensures the longevity and optimal performance of your Vitotronic 100 Hc1 Control unit and the overall heating system. Always disconnect power before performing any maintenance.
- Cleaning: Gently wipe the display and control panel with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Firmware Updates: Periodically check the Viessmann website or consult your service technician for available firmware updates to ensure your unit has the latest features and bug fixes.
- Professional Inspection: It is recommended to have your entire heating system, including the control unit, inspected by a qualified Viessmann service technician annually.
Troubleshooting
This section provides solutions to common issues. For more complex problems, contact a qualified service technician.
| Problem | Possible Cause | Solution |
|---|---|---|
| Display is blank | No power; loose connection; internal fault. | Check power supply to the boiler. Ensure all cables are securely connected. If problem persists, contact service. |
| Unit not responding to button presses | Unit frozen; internal fault. | Temporarily disconnect and reconnect power to reset the unit. If unresponsive, contact service. |
| Error code displayed | System malfunction; sensor error. | Note the error code and consult the boiler's installation manual or contact a qualified technician, providing the error code. |
Specifications
- Model: 7426 136 Vitotronic 100 Hc1
- Compatibility: Viessmann Vitodens 200-W (WB2B-45, WB2B-60, WB2B-80, WB2B-105)
- Power Consumption: Approximately 200 watts (Note: This wattage may refer to the boiler system, not solely the control unit.)
- Controller Type: Control4 (Note: This may refer to a generic classification rather than specific integration with Control4 home automation systems.)
- Manufacturer: Viessmann
Warranty and Support
For warranty information, please refer to the warranty card included with your Viessmann heating system or visit the official Viessmann website. Warranty terms and conditions may vary by region and product.
For technical support, service, or to locate a certified Viessmann technician, please contact Viessmann customer service or visit their official support portal:
- Viessmann Official Website: www.viessmann.com
- Customer Service: Refer to the contact information provided on the Viessmann website for your specific region.





