Two- or four-pipe heating and/or cooling systems are characterized by changing conditions due to valves opening and closing depending on the need for heating or cooling. This continuously causes flow and differential pressure changes.

Without proper measurements, such systems suffer from uneven heat distribution, poor energy inefficiency and are very difficult to commission.

By adding an actuator, the valves function as flow-limited control valves, automatically balancing the system and providing the best possible indoor comfort and energy efficiency. The commissioning of the system is a lot easier, all valves only need to be set to the design flow before the actuators are mounted.

Danfoss offers a broad range of pressure-independent balancing and control valves and matching actuators.

Features and benefits

Stable room temperature

Eliminating the overflow situations at partial load conditions has a significant effect on the stability of the room temperature

Improved indoor comfort

With the stable room temperature, the indoor comfort increases. Required temperatures are accurately met, increasing the productivity of office employees or benefitting the experience of hotel guests.

Energy savings

The perfectly balanced system, under all conditions, increases the energy efficiency and leads to savings on energy costs.

Reduced maintenance costs

As the pressure-independent valves ensure perfect working conditions, the actuators mounted on them require fewer movements to keep the temperature stable. This increases the lifetime value of the actuators and reduces the maintenance costs.

Documents

Type Name Language Updated Download File type
Brochure - AD Energy saving solutions for renovation of heating and cooling systems Romanian, Moldavian, Moldovan 17 May, 2018 6.3 MB .pdf
Brochure - AD Energy saving solutions for renovation of heating and cooling systems Hungarian 17 May, 2018 6.3 MB .pdf
Brochure - AD Energy saving solutions for renovation of heating and cooling systems English 17 May, 2018 5.8 MB .pdf
Brochure - AD Grow your business and discover the value of working with one partner (International version) English 18 May, 2018 5.6 MB .pdf
Application guide - AB HVAC Application guide Hungarian 17 May, 2018 7.7 MB .pdf
Application guide - AB HVAC Application guide English 17 May, 2018 7.5 MB .pdf
Application guide - AB HVAC Application guide Czech 17 May, 2018 7.2 MB .pdf
Application guide - AB HVAC Application guide Romanian, Moldavian, Moldovan 17 May, 2018 7.2 MB .pdf
Brochure - AD Hydronic Balancing & Control product overview English 17 May, 2018 7.1 MB .pdf
Brochure - AD Hydronic Balancing & Control product overview Czech 17 May, 2018 1.0 MB .pdf
Brochure - AD Hydronic Balancing & Control product overview English 17 May, 2018 1.1 MB .pdf
Brochure - AD Hydronic Balancing & Control product overview German 17 May, 2018 1.1 MB .pdf

Tender text

ABNM A5 – Thermic Actuators

Modulating thermal actuator used to control pressure independent balancing and control valves DN 10-32.

  • Control signal: 0-10 V
  • Valve stroke detection
  • Power consumption: 1 W standby
    LOG(LIN*) characteristic
  • Halogen free cable: plug-in; 1 m (5 m and 10 m)
  • IP class: 54
  • Normally closed (open**) when de-energized
  • First open function (normally closed variant)
  • Visible stroke indicator
  • Stroke: 5(6.5 mm***)
  • Supply Voltage: 24 V AC, 50/60 Hz (24 V DC****)

*LIN variant available
**normally open variant available
***6.5 mm variant available
****24 V DC variant available

TWA-Z – Thermic Actuator

On/off thermal actuator used to control pressure independent balancing and control valves DN 10-32.

  • Supply Voltage: 24 V AC/DC (230 V 50/60 Hz*)
  • Height: 60 mm from valve adapter
  • Cables: PVC (halogen free**) 1.2 m (5 m and 10 m)
  • Normally closed (open***) when de-energized
  • First open function (normally closed variant)
  • Visible stroke indicator
  • Power consumption: 2 W standby

*230 V varriant
**halogen free cables available only for normally closed variant
***normally open variant available

AME 435QM – For Modulating Control

The actuators AME 435 QM for modulating control is used with pressure independent balancing and control valve type AB-QM from DN 40 to DN 100.

  • Actuator shall have LED signalization
  • Actuator shall be able to mount/dismount on/off the valve without any tools needed
  • Actuator shall have efficiency improving and energy saving anti-oscillation function
  • Actuator shall have external reset/stand-by button
  • Easy electrical connection, snap on/of connection
AME 55QM – Push / Pull Actuators for Larger AB-QM

The actuator AME 55 QM is used with pressure independent balancing and control large valve type AB-QM DN 125 and DN 150.

  • Actuator shall have LED signalization
  • Actuator shall be able to capture operational data
  • Actuator shall have possibility to be modulating or 3-p controlled
  • Actuator shall have reset option
AME 85QM – Push / Pull Actuators for Larger AB-QM

AME 85QM actuator is used together with large pressure independent balancing and control valves type AB-QM DN 200 and DN 250.

  • Actuator shall have LED signalization
  • Actuator shall have possibility to be modulating or 3-p controlled
  • Actuator shall have reset button

Drawings

Software

Danfoss C.H. software

Danfoss C.H. software

Our advanced Danfoss C.H. software will help you to design and calculate the perfect heating or cooling installation with Danfoss products.

Case studies