Air handling apparatus for HVAC systems

An air handling apparatus for a HVAC system of a building, comprising:

• a rectangular enclosure having a pair of opposing side walls, a pair of opposing end walls, a roof, and a floor;
• a plurality of inlet openings formed in the enclosure for drawing outside air into the enclosure, and at least one outlet opening for directing air from within the enclosure to outside the enclosure;
• at least one fan mounted within opposing ends of the enclosure for drawing air through the enclosure;
• a burner box centrally located within the enclosure between the roof and the floor of the enclosure for heating air within into the enclosure, wherein the at least one fan is located between the burner box and the at least one outlet opening to draw air from the plurality of inlet openings, through the burner box, and out the at least one outlet opening;
• and
• at least one air conditioning evaporator coil located within the enclosure and adjacent the burner box for cooling air drawn into the plurality of inlet openings and exiting the at least one outlet opening, wherein the enclosure includes a pedestrian entry door and a service access corridor providing access to an interior of the enclosure to allow a maintenance worker to enter the enclosure and service the burner box such that the enclosure protects the maintenance worker from any harsh environmental conditions.

An air handling apparatus for a HVAC system of a building, comprising:

• an enclosure having a pair of opposing side walls, a pair of opposing end walls, a roof, and a floor;
• a plurality of air inlet openings formed in at least one of the pair of opposing side walls and the roof of the enclosure for drawing outside air into the enclosure, and at least one air outlet opening formed in each of the pair of opposing end walls for directing air from within the enclosure to outside the enclosure;
• the floor having at least one section formed from an open grate material which creates a floor air inlet for allowing outside air to flow into the enclosure;
• at least one fan mounted within opposing ends of the enclosure for drawing air in through the plurality of air inlet openings, through a central portion of the enclosure, and through the at least one air outlet opening;
• and
• a burner box centrally located within the enclosure between the roof and the floor of the enclosure for heating air the enclosure, the enclosure being configured to allow a service worker to enter an interior thereof to facilitate servicing of the burner box while being protected from any harsh environmental conditions.