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. 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), chilled water, or evaporative cooling
ETL listed

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

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