7134851 VIESSMANN Set Vt

Review VIESSMANN Installation Set Vr1 Vt. V4

The Viessmann 7134-851 Set VR1 91-140 VT4 is a comprehensive kit designed for the installation and operation of Viessmann Vitodens 05-Series and Vitodens 100-W boilers with outputs ranging from 91 kW to 140 kW. This set includes essential components for a reliable and efficient heating system.

The heart of this kit is the VR1 modulating room thermostat. It offers precise temperature control and features a user-friendly interface with a clear LCD display. The VR1 is also equipped with Frost Protection and Open Vent Detection functions, ensuring optimal performance in various climate conditions.

The 7134-851 Set also includes a VT4 4-channel temperature sensor. This sensor allows for individual temperature control of up to four separate zones within the heating system. It can be easily installed and connected to the VR1 thermostat for seamless communication and temperature regulation.

Additionally, the set includes a V4 100-230V power supply unit. This component ensures a stable power supply to the VR1 thermostat and the boiler control system. It also features an automatic restart function in case of power failures, ensuring minimal disruption to heating operations.

The 7134-851 Set VR1 91-140 VT4 is designed with high-quality components and robust engineering to ensure long-lasting performance. It is compatible with Viessmann Vitodens 05-Series and Vitodens 100-W boilers and is an essential accessory for proper installation and operation of these heating systems. By providing precise temperature control, individual zone regulation, and a stable power supply, this kit enhances the overall efficiency and reliability of your Viessmann boiler system.

The Viessmann 7134-851 SET VR1 91-140 VT V4 is a high-efficiency condensing boiler system designed for residential applications. This boiler is known for its advanced technology, energy efficiency, and reliability. Here are some pros and cons of buying this boiler system:

1. High Energy Efficiency: With an efficiency rating of up to 91%, this boiler system can save you a significant amount on your energy bills.

2. Compact Design: The Viessmann 7134-851 SET VR1 91-140 VT V4 has a compact design, making it easy to install in most homes.

3. Advanced Technology: This boiler system features advanced technology, including a modulating burner and a stainless-steel heat exchanger, which ensures consistent water temperature and long-lasting performance.

4. Low Emissions: This boiler system has low NOx emissions, making it an eco-friendly option for homeowners.

5. User-Friendly: The boiler system is user-friendly, with a clear display and easy-to-use controls.

1. High Initial Cost: The Viessmann 7134-851 SET VR1 91-140 VT V4 has a high initial cost compared to some other boiler systems on the market.

2. Complex Installation: Installing this boiler system may require the expertise of a professional installer due to its advanced technology.

3. Limited Compatibility: This boiler system may not be compatible with all heating systems and may require additional components for installation.

The Viessmann 7134-851 SET VR1 91-140 VT V4 is an excellent option for homeowners looking for a high-efficiency, compact, and reliable boiler system. Its advanced technology ensures consistent water temperature, long-lasting performance, and low emissions. However, its high initial cost and complex installation may be a deterrent for some homeowners.

If you are looking for a high-efficiency boiler system with advanced technology and eco-friendly features, the Viessmann 7134-851 SET VR1 91-140 VT V4 is an excellent choice. However, if you are on a tight budget or have limited experience with boiler installations, you may want to consider a less expensive and easier-to-install option. It is recommended to consult with a professional installer to determine the best boiler system for your home based on your specific needs and budget.

Details:

specifications buildymat:

• brand: Viessmann
• mpn: 7134851

seller buildymat:

• rating: 99.7%
• city: concord, new hampshire
• # reviews: 3186

offer buildymat:

• price: $489.00
• item condition: New – Open box
• options: ship-to-home
• started: february 20, 2026
• sold #: 9
• in stock #: 1
• availability: in stock
• best offers: true

shipping buildymat:

• type: fixed
• transit: 5-11 days
• class: standard
• carrier: usps
• service: usps ground advantage

payments buildymat:

• wallet: paypal
• other
• credit card: mastercard

returns buildymat:

• paid by: buyer
• method: money back
• time: 30 days
• policy: returns accepted

general buildymat:

• category: Business & Industrial > Supplies > Building Materials