Patent ID: 9612024
Date: 2017-04-04
CPC Classifications: F24F

Claim:
1. An air handler for ventilating and cooling a building having a return air duct for returning air from the building to the air handler, the air handler comprising a cold air circuit including at least one cold air supply fan and one or more dampers for drawing first return air from the return air duct and first outside air in a first, adjustable proportion to produce a first outside/return air mixture, and for propelling the first outside/return air mixture past a cooling coil adapted to provide for cooling or not cooling the first outside/return air mixture as needed or desired to provide a cold air supply of cold air at a cold air temperature T1 to the building, and a bypass air circuit including a bypass air supply fan and one or more dampers for drawing second return air from the return air duct and second outside air in a second proportion to produce a second outside/return air mixture, resulting in bypass air at a bypass air temperature T2, and for propelling the bypass air to the building as a bypass air supply in parallel with and separated from the cold air supply, wherein the air handler is configured to provide for selecting said second proportion as needed or desired for use in the bypass air supply, wherein the bypass air circuit includes an exhaust damper for exhausting bypass air propelled by the bypass air supply fan as needed to maintain neutral air pressure in the building.