Terminal units

  • Overview
  • Related products
  • Learning
  • Case studies
  • News

Terminal units such as fan coil units, climate panels and induction units are particularly popular in HVAC systems for larger buildings. There are some good reasons for that; they don’t take up precious floor space, they can be accessed for service or maintenance, they are simple to connect to the HVAC system and they can be used for heating, comfort cooling, or both.

To achieve high indoor comfort of the heating and/or cooling provided by the Terminal units, it is important to have a proper hydronic balance, reliable control valves and accurate room temperature controllers. This is where Danfoss comes in.

Our Pressure-Independent balancing and Control Valves (PICV) ensure proper system hydronic balance, both in full load as well as partial load conditions. Once equipped with a matching actuator, they function as control valves at the same time.
If both heating and cooling are required and a four-pipe system is used, our robust changeover valves provide a compact solution, eliminating separate balancing and control valves for heating and cooling.

We also offer the more traditional manual balancing valves and motorized control valves. This combination can be used where three-way control valves are used, and a constant flow system is achieved as a result.

Danfoss room thermostats offer a simple standalone solution to control the room temperature. They are connected to the control valves and ensure a stable room temperature and optionally fan speed selection and time scheduling.

How we can help you

Complete product portfolio

Compact solutions

Fewer components needed

Easy and fast commissioning

Increase energy efficiency

Danfoss pressure independent balancing and control valves documentary

Hear all about the benefits of pressure independent balancing & control valves (PICV) and why have Danfoss customers converted from conventional balancing solutions to the PICV.

Related products

  • Manual balancing valves- Danfoss
    Manual balancing valves

    Manual balancing valves provide a static, basic balancing solution for many HVAC applications. The valves limit the flow through different parts in heating, cooling and domestic hot water systems. Since manual balancing valves can not react to changing conditions, the valves are recommended to be used in constant flow systems.

  • AB-QM- Danfoss
    AB-QM

    AB-QM Pressure Independent balancing and Control Valves (PICV) provide both a control functionality and dynamic balancing solution for HVAC heating and cooling systems. PICVs are designed for various types of terminal units and provide high indoor comfort and energy efficiency in public and commercial buildings.

  • Actuators for PICVs- Danfoss
    Actuators for PICVs

    To take advantage of the combined balancing and control features of Danfoss AB-QM it has to be equipped with actuators controlled by room thermostats or a Building Management System. Danfoss offers a broad range of actuators varying from thermal on-off to geared digital actuators with bus communication.

  • Motorized control valves and actuators- Danfoss
    Motorized control valves and actuators

    Motorized control valves ensure perfect control and efficiency for every building and application. Danfoss Motorized Control Valves (MCV) for district heating and cooling, HVAC and central heating systems ensure stable and accurate control of water, glycol mixtures and steam.

Learning

  • How to balance HVAC systems in “Shell and Core buildings”
    How to balance HVAC systems in “Shell and Core buildings”

    Shell & Core buildings – larger buildings split in smaller zones for rental purpose – such as office buildings or shopping malls are rapidly gaining in popularity. The design and commissioning of the HVAC system in such buildings requires another approach. If this is not taken into account issues like a long handover time, an over-dimensioned and unreliable system will occur.

Case studies

  • Danfoss contributes to smart HVAC control solution for I-tower at WTC Amsterdam
    Smart HVAC control solution for the I-tower at WTC Amsterdam, the Netherlands

    Building: Office
    Application: Climate panels with a four-pipe change-over system for Heating and Cooling
    Challenge: Establish a modern, innovative HVAC control system optimized for flexibility in (changing) usage of office space
    Solution: Integration of Danfoss field devices with the Building Management System via BACnet bus-communication

  • High-end climate solutions in Waldorf Astoria by Hilton, Amsterdam, the Netherlands

    Building: Hotel
    Application: Hydronic balancing and control for radiator heating and fan coil cooling
    Challenge: Establish top level comfort and minimum energy consumption for heating and cooling
    Solution: Fan-coil units for cooling; 8 heating risers and radiators equipped with Danfoss products.

  • HVAC control at Katowice business centre, Poland

    Katowice Business Centre is a modern office building where Danfoss hydronic balancing solutions are used; AB-QM balancing and control valves in combination with revolutionary NovoCon® actuators.

  • Energy comfort in Prime Tower, Zurich, Switzerland

    The Prime Tower in Zurich is a building of many records. With its 126 meters it is the tallest building in Switzerland with 36 floors and 40,000 square meters accommodating mostly offices. And with its more than 6,000 AB-QM valves it is also one of the biggest heating and cooling installations ever designed and installed by Danfoss.

News

  • NEW: AB-QM 4.0 Pressure Independent balancing and Control Valve (PICV) for smart buildings
    Friday, October 11, 2019

    Danfoss AB-QM 4.0 replaces AB-QM Pressure Independent balancing and Control Valves (PICVs)