Pfannenberg's cooling units for top mounting

100% condensate protection needs so little space

One main advantage of the DTT top-mounted cooling units is their small size and their practical positioning. Therefore, they can be used everywhere where there are space shortages, where production lines are narrow, electrical enclosures stand in rows and emergency escape routes have to be kept clear. As the DTT cooling units are mounted on the top of the electrical enclosure, they are protected from mechanical damage during ongoing production.

Pfannenberg top-cooling – a concept that makes sense

1. Energy efficiency...

  • due to the use of new technology, such as the Micro Channel Technology in the top-mounted cooling units size 1 for example
  • by means of the energy saving mode which makes it possible to automatically switch off the internal motor
  • due to the use of the same filter adapter as in the door-mounted and side-mounted units from the DTI/DTS series
  • due to the tool-free filter change which can be carried out  in seconds because they are attached without screws

2. Service and maintenance friendliness ...

  • due to the easy, tool-free installation because of the quick fastening
  • due to the cover that can be taken off to the front, allowing quick access to the components

3. Design...

  • the concept of top-mounting saves storage space, keeps emergency escape routes clear and protects from mechanical damage in the running production operations
  • robust design (steel cover, no plastic!) for industrial environmentsstainless steel cover can be painted in various colours

The DTT condensate management - Not only revolutionary. Also patented.

Main feature of the DTT’s innovative condensate management is the repositioning of the cooling circuits. Moving the cold area up prevents the cold bridge to the electrical enclosure and also enables a problem-free drainage of condensate. An extensive separation of air flow and evaporator stops the formation of twirling droplets. And finally, the integrated air outlet nozzles make the use of conventional air hoses unnecessary; these are at risk of condensation.

Cold bridge

The challenge: 
The lower, cold area of the cooling unit has direct contact with the ceiling of the warm electrical enclosure. As a result of the cold bridge, condensate can form on the inside ceiling of the electrical enclosure and drop into the inside.

The Pfannenberg solution:

Changing the position of the air-conditioning circuits. When the cold area of the cooling unit is at the top and the warm area at the bottom, a cold bridge to the electrical enclosure and the danger of condensate forming is avoided.

Overflow of condensate

The challenge:

The horizontal condensate discharge which runs along the unit’s floor makes the condensate drainage more difficult. Part of the condensate water that has accumulated in the cooling unit can overflow into the electrical enclosure via the air outlet opening. 

The Pfannenberg solution: 

Vertical drainage of the condensate. The positioning of the evaporator unit in the top part of the cooling unit makes a problem-free drainage of the condensate water without contact to the electrical enclosure possible.

Twirling droplets

The challenge:
Concentrated warm air hits the evaporator. Parts of the condensate water formed there can be carried away by the air flow and can get into the electrical enclosure with the cold air. 

The Pfannenberg solution:

The warm air spreads out over a large evaporator. The reduced air speed at the evaporator reduces the twirling and guarantees a condensate-free air flow in the direction of the electrical enclosure.

Air hoses

The challenge:

The hoses conducting the cold air are surrounded by warm air of the electrical enclosure. As a result, condensate can form on the surface of the hose.

The Pfannenberg solution:

Integrated nozzles instead of air hoses. Air outlet nozzles are positioned on both sides of the cooling unit and accelerate the cold air and conduct it condensate-free down to the bottom of the electrical enclosure.