Sizing Roof Top Units

Rooftop units are connected to ductwork which provides a defined route for the conditioned air to travel along.

Sizing roof top units.

Most rooftop unit manufacturers provide tables or computer programs to help engineers select units. Select johnson controls rooftop units are smart equipment enabled meaning they already have controls embedded and can seamlessly connect to a controls system and self discover other smart equipment. Purpose of a rooftop unit. Since 12 000 btus equal 1 ton an air conditioning unit rated at 3 tons can produce.

Besides meeting the space cooling load sensible plus latent the unit must cool outside air and overcome fan heat. Weatherexpert units available in 3 23 ton sizes use multi stage compressors a single refrigerant circuit and sav staged air volume logic to provide part load efficiencies that lead the industry. Now in our last tutorial we looked at air handling units or ahu s. The btu measurement describes the size of the unit or units in tons.

Rooftop units in the 5 pro core 20 and 40 series are smart equipment enabled or smart equipment optional. Though btus are important most larger air conditioning units are rated in tons. The carrier weatherexpert packaged rooftop unit series provides comfort and energy efficiency never seen before. The purpose of a rooftop unit is to distribute conditioned air within define areas of a building.

A btu or british thermal unit is the amount of heat needed to heat 1 pound of water one degree fahrenheit.