Direct Gas-Fired Make-up Air Units
Direct Gas-Fired Make-up Air Units

Direct gas-fired make-up air units feature burners that are 92% efficient and capable of up to 30:1 turndown. The burner construction consists of a cast aluminum manifold with stainless steel mixing and end plates, drastically reducing burner maintenance in the field. These units can be configured with a wide variety of heating/cooling capacities and air volumes.

Direct Gas-Fired Make-up Air Units

Direct gas-fired make-up air units feature burners that are 92% efficient and capable of up to 30:1 turndown. The burner construction consists of a cast aluminum manifold with stainless steel mixing and end plates, drastically reducing burner maintenance in the field. These units can be configured with a wide variety of heating/cooling capacities and air volumes.

Direct Gas-Fired Make-up Air Units
OVERVIEW
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DG

Model DG sets the standard for an efficient approach to tempered make-up air applications. Several intake and filtering configurations are available. Users may also select optional evaporative cooling. The DG model can be constant volume 100% outdoor air or configured to be variable air volume (VAV) through a VFD or EC motor option (Vari-Green®). With a VAV arrangement, it can provide seamless integration with Vari-Flow and Melink® kitchen energy management systems.

  • 800 to 15,000 cfm and 2 in. wg
  • Up to 1,600,000 BTU/hr.
  • Optional evaporative cooling
  • ETL listed
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DGX

Model DGX is a highly configurable direct gas-fired heating and cooling system. The unit incorporates a modular design to maximize configuration flexibility. In addition, constant volume, 100% outdoor air, recirculation, and VAV airflow arrangement are available. The DGX can be configured with a forward-curved, backward-curved or mixed flow plenum supply fan allowing for either belt-driven or drive arrangements.

  • 800 to 48,000 cfm and 4 in. wg
  • Up to 4,800,000 BTU/hr.
  • Cooling options: packaged direct expansion (DX), split direct expansion (DX), chilled water, or evaporative cooling
  • ETL listed
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TSU

Model TSU is a configurable, direct gas-fired heating make-up air unit. In addition, constant volume 100% outdoor air operation, recirculation, and VAV airflow arrangements are also available.

  • 33,000 to 64,000 cfm and 3 in. wg
  • Up to 7,000,000 BTU/hr.
  • Optional evaporative cooling
  • ETL listed
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VSU

Model VSU is a vertically configured direct gas-fired heating make-up air unit that offers a wide range of CFMs. The vertical configuration removes the equipment weight loading from the roof and offers a simplified means of installation. Ground level filters, dampers, and controls greatly simplify equipment start-up and maintenance.

  • 800 to 64,000 cfm and 3 in. wg
  • Up to 7,000,000 BTU/hr.
  • ETL listed