DACS A/S

- Model HE740 - Exhaust Unit for Pig and Poultry Houses

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The HE740 exhaust unit for poultry and pig houses is the most efficient roof mounted exhaust unit available. The exhaust unit is equipped with a highly efficient fan motor that ensures high air exchange rates at very low energy consumption. In a direct comparison against leading suppliers on the market today, the HE740 exhaust unit offers at least 30 % lower energy consumption at equivalent flow rates. E.g.: 25.5W/1000 m3/h @ 17,500 m3/h.

Two versions - turning baffle or butterfly valve
The HE740 exhaust with butterfly valve completely seals off from rain, birds, insects, rodents and light when not in operation. This unit is for on/off speed control.

The HE740 with turning baffle is for speed control via a 0-10 volt signal, or on/off. This unit can be speed controlled via a frequency inverter.

HE740 - volume flow (m3/h) as a function of pressure and RPM.

The HE740 with butterfly damper on top of the chimney is a high efficiency and energy saving exhaust unit for livestock facilities. With a specific power consumption of 25,5 W/1000 m3/h, the exhaust unit is “best practice” in the industry and takes a significant lead over competing products.

HE740 will reduce your energy bill significantly and make you stay competitive in an ever changing and challenging market. It is simply power to your pocket!



Immense savings
The aerodynamic shape of the ventilation unit, in combination with a highly efficient motor/impeller solution, saves an immense amount of energy in comparison with traditional solutions - often more than 70%.
The reason for these savings is that DACS (as the only company in the industry) has made an application match combining motor, impeller and chimney in an extreme high performance unit - a very profitable investment.

Butterfly damper
The advantage of using the HE740 with butterfly damper is that it completely seals off from water, light, insects and wild birds when the unit is not in operation. The HE740 with butterfly damper should only be operated on/off.

Technical Specifications

  • Motor 3 x 230V /3x400 V: 1,6/0,95 A.
  • Shaft output power: 0,3 kW.
  • Volume flow @ 0 Pa: 17.4710 m3/h @ 0 Pa.
  • Specific consumption: 25,5 W / 1000 m3/h.
  • Fan RPM: 945-960 @ 50 Hz.
  • Materials: ABS / stainless steel.

HE740 with turning baffle in the chimney will reduce your energy bill significantly and make you stay competitive in an ever changing and challenging market. It is simply power to your pocket!

HE740 is a high efficiency and energy saving roof mounted exhaust unit for livestock facilities. With a specific power input of 25,5 W/1000 m3/h, the exhaust unit is best practice in the industry and takes a significant lead over competing products.



Immense savings
In comparison with traditional exhaust solutions the HE740 unit offers up to 70% savings on electrical consumption. The reason for these savings is that DACS (as the only company in the industry) has made an application match combining motor, impeller and chimney in an extreme high performance unit - a very profitable investment.

Turning baffle
HE740 with turning baffle in the chimney is for both on/off or 0-10 volt operation with a frequency drive or similar.
Installation in side wall possible

Due to the durable construction the HE740 with turning baffle can be installed in, for example, wall constructions.

Technical Specifications

  • Motor 3 x 230V /3x400 V: 1,6/0,95 A.
  • Shaft output power: 0,3 kW.
  • Volume flow @ 0 Pa: 17.4710 m3/h @ 0 Pa.
  • Specific consumption: 25,5 W / 1000 m3/h.
  • Fan RPM: 945-960 @ 50 Hz.
  • Materials: ABS / stainless steel.

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