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Tandem 300/385
Heating

Door air curtains with Tandem technology.

Tandem 300/385
Your benefits:
  • 38 % energy savings using Tandem technology

  • Minimal heating requirement with the same penetration depth

  • Valves (optional) can be concealed behind the casing

Key features

  • Short delivery times for our standard door air curtains
  • For controlled screening of cold air with open doors
  • Energy savings of up to 38% compared to conventional systems
  • Two stacked fan groups for ambient air stream and warm air stream (Tandem technology)
  • Improved use of space Workplaces can be arranged more closely to the entrance
  • Faster return on investment compared to conventional systems

 

Tandem 300 - Your energy saving calculator

 

Tandem 385 - Your energy saving calculator

TECHNOLOGY

  • Coanda effect to improve the depth of penetration of the door air curtain:
    - Ambient air stream pulls the warm air stream
    - Improved screening and higher installation heights compared to conventional systems
  • Ambient air stream acts as a back-up stream
  • Adverse energy-intensive turbulence occurs primarily between the outside air and the unheated ambient air stream
  • Adverse weather stays outside, thanks to the enhanced penetration depth between two parallel air streams of different temperature
  • High-performance copper/aluminium heat exchanger
  • Easily removable air filter (grade G 2 in line with DIN EN 779); easy to clean by vacuuming or washing
  • Anti-torsion mechanism for heating connections prevents damage to the heat exchanger when screwing in the valves; valves optionally available as accessories

AREAS OF APPLICATION / INSTALLATION

  • Versatile use in showrooms and sales floors of all kinds, malls and public buildings
  • Wall or ceiling-mounted
  • Modular design enables multiple devices to appear as a single visual unit
  • Installation also possible with casing provided by customer or concealed withint the suspended ceiling
  • Lengths 1.0, 1.5, 2.0, 2.5 and 3.0 m (Tandem 300)
    Lengths 1.5, 2.0 and 2.5 m (Tandem 385)
  • Suitable for mounting heights of:
    - 2.7 to 3.4 m (Tandem 300)
    - 3.5 to 4.0 m (Tandem 385)

... also good to know

  • Also available as an electric unit (Tandem 300 Electric), for even faster installation and a wider range of applications
  • KaControl system or electromechanical control possible
  • Integration in KaControl networks or building automation systems, such as BACnet, Modbus or LON possible
  • Special designs, such as vertical unit above doorway on request

 

 

Tandem Door Air Curtain 3D

Technical catalogues
Tandem 300/385 door air curtainsdownload as.pdf, 3,45 MB
Leaflets/Flyers
Spezial Tandem 300/385 door air curtains, screen-optimizeddownload as.pdf, 770,64 KB
Cross-product information
Product overview, products available in UKdownload as.pdf, 7,97 MB
Spezial Commercial buildingsdownload as.pdf, 2,17 MB
Spezial KaControl building automationdownload as.pdf, 794,90 KB
Spezial Logistics buildingsdownload as.pdf, 830,76 KB
Spezial hoteldownload as.pdf, 2,41 MB
Spezial retail chainsdownload as.pdf, 3,45 MB
Spezial sports halldownload as.pdf, 2,26 MB
Overview Heating and Cooling with Refrigerantsdownload as.pdf, 4,39 MB
Installation manuals
Vario and Tandem 300/385 Door Air Curtainsdownload as.pdf, 2,95 MB
Vario and Tandem 300/385 Door Air Curtains, Wiring Diagramsdownload as.pdf, 1,87 MB
Tandem 300/385 DE Door Air Curtains, as Ceiling Cassette Unitdownload as.pdf, 1,59 MB
Tandem 300 Door Air Curtains, with Electric Heater Coilsdownload as.pdf, 2,67 MB
KaControl for Door Air Curtainsdownload as.pdf, 2,48 MB
Declarations/Certificates
Building product declaration door air curtainsdownload as.pdf, 209,67 KB
Interseroh Recycling Certificatedownload as.pdf, 627,76 KB
TÜV Certificate ISO 9001:2008download as.pdf, 443,11 KB
EU Declaration of Conformity UniLine, Vario, Tandem door air curtainsdownload as.pdf, 1,06 MB
CAD drawings
Tandem 300 door air curtain, model size 10download as.dwg, 240,15 KB.dxf, 1,82 MB.pdf, 128,09 KB
Tandem 300 door air curtain, model size 15download as.dwg, 246,32 KB.dxf, 1,95 MB.pdf, 131,36 KB
Tandem 300 door air curtain, model size 20download as.dwg, 256,79 KB.dxf, 2,06 MB.pdf, 129,80 KB
Tandem 300 door air curtain, model size 25download as.dwg, 251,09 KB.dxf, 2,23 MB.pdf, 119,60 KB
Tandem 300 door air curtain, model size 30download as.dwg, 287,26 KB.dxf, 2,59 MB.pdf, 135,34 KB
Tandem 385 door air curtain, model size 15download as.dwg, 266,48 KB.dxf, 2,14 MB.pdf, 134,11 KB
Tandem 385 door air curtain, model size 20download as.dwg, 287,43 KB.dxf, 2,32 MB.pdf, 138,16 KB
Tandem 385 door air curtain, model size 25download as.dwg, 316,39 KB.dxf, 2,71 MB.pdf, 145,38 KB
Technical details

This table only gives you a brief overview of the technical data. If you are looking for a more detailed product description and further technical data, please use the technical catalogue. The product configurator and the calculation program will help you to find the right article for your selection.


KaControl recirculating air control accessories

KaController 24 V, room control unit with one-touch operation, wall-mounted room control unit, with integral room temperature sensor; only for use with C1 controller

Installation instructions: i385_kurz_kacontroller_int.pdf

Download specifications (.rtf)
Article no.:
196003210001

KaController 24 V, room control unit with function buttons at the side, wall-mounted room control unit, with integral room temperature sensor; only for use with C1 controller, type 3210002

Installation instructions: i385_kurz_kacontroller_int.pdf

Download specifications (.rtf)
Article no.:
196003210002

KaControl room temperature sensor, wall-mounted, IP30, colour white RAL 9010, type 3250110

Is the KaController installation site suitable for a temperature measurement? - If it is not suitable, e.g. behind a curtain, then a KaControl room temperature sensor should be chosen for each group!
Download specifications (.rtf)
Article no.:
196003250110

KaControl CANBUS card, type 3260301

For increasing the number of units in a single-circuit system to a maximum of 30 units, one required per unit
For increasing the cable length from the first to the last unit from 30 to 500 m
Download specifications (.rtf)
Article no.:
196003260301

KaControl cable sensor for unit frost protection, length 600 mm, type 3250114

Download specifications (.rtf)
Article no.:
196003250114

KaControl Building Management System

Serial Modbus card for connection to Modbus networks, type 3260101

Necessary for every secondary air unit!
Download specifications (.rtf)
Article no.:
196003260101

Stage switches for fan speed control

5-stage switch

Installation instructions: i005_5stufenschalter_100925_100926_gb.pdf

Download specifications (.rtf)
Article no.:
196000100925

5-stage summer/winter switch

Only for use in conjunction with thermoelectric shut-off valve
Installation instructions: i006_5stufensommerwinterschalter_100928_100929_gb.pdf

Download specifications (.rtf)
Article no.:
196000100928

Cascade module, type 100906

for the parallel operation of two electromechanical door air curtains via one stage switch
Download specifications (.rtf)
Article no.:
196000100906

Valves

Thermoelectric shut-off valve 230 V

For KaControl and stage switch!
Download specifications (.rtf)
Article no.:
196000100910

Leaving air temperature limiting valve

Download specifications (.rtf)
Article no.:
196000100965

Casings

Basic unit casing, powder-coated traffic white RAL 9016

Download specifications (.rtf)
Article no.:
251000110900

Casing extension, powdercoated traffic white, RAL 9016

Download specifications (.rtf)
Article no.:
251000110910

Brackets

Wall brackets made of sendzimir galvanised steel for wall mounting, powder-coated traffic white RAL 9016

Download specifications (.rtf)
Article no.:
251000100990

Ceiling brackets, galvanised steel, powdercoated traffic white RAL 9016; for adjustable suspension from the ceiling

Download specifications (.rtf)
Article no.:
251000100995

Filter

Replacement filter with frame for basic unit, (1 no.)

Download specifications (.rtf)
Article no.:
251000110925

Replacement filter mat for air inlet filter, (1 set = 5 mats)

Download specifications (.rtf)
Article no.:
251000110920

Galvanised steel components

Air duct for air inlet (minimum length 500 mm)

Download specifications (.rtf)
Article no.:
251000110980

Air duct for air outlet (minimum length 500 mm)

Download specifications (.rtf)
Article no.:
251000110981

Air inlet grille with frame and filter fixing, powdercoated traffic white RAL 9016

Download specifications (.rtf)
Article no.:
251000110930

Flexible connection for air inlet side

Download specifications (.rtf)
Article no.:
251000110960

Flexible connection for air outlet side

Download specifications (.rtf)
Article no.:
251000110970

Induction air angle section 90° with connecting frame on both sides

Download specifications (.rtf)
Article no.:
251000110950

Outlet air rectifier with frame, powdercoated traffic white RAL 9016

Download specifications (.rtf)
Article no.:
251000110940

How does Tandem technology work?

In addition to the warm air curtain, a separate fan group produces an unheated primary air curtain that has a greater penetration depth and acts as a "back-up" air stream for the warm air curtain. At the same time it acts as a separately layer towards the cold outside air: cold outside air cannot penetrate in and warm air cannot escape.

What is the "Coanda" effect?

The penetration depth and screening effect are both increased by the contraction of the primary air stream and the warm air stream without this needing additional energy. This also means that the units can even be fitted at a greater height.

How are energy-savings achieved with Tandem door air curtains?

An energy-saving of approx. 38 % is possible by the combination of:

 

  • Increased penetration depth caused by the Coanda effect
  • Unheated primary air stream
  • A resulting smaller volume of warm air curtain