Rooftop hvac systems are installed on roofs for a number of reasons.
Roof top hvac plenum.
Pre fabricated plenum roof curbs are available in the following.
The ductwork that distributes the heated.
Outside air dampers are designed to adjust from closed to full open and may be manually controlled by a multiposition remote potentiometer.
Supply and or return plenums with field cut openings in roof curb floor.
It has a critical function and that is to bring in distribute and remove air.
They supply heating and cooling to a homes and commercial buildings.
A plenum is an air distribution box attached directly to the supply outlet of the hvac equipment that heats or cools the air to make the house comfortable.
A roof mounted insulated plenum to which distribution supply and return air ducts may be connected through a roof opening is required for such an installation.
Rooftop hvac duct system leaks water mold and pathogens.
A supply plenum and a return plenum.
Types of rooftop hvac systems.
These photographs show what happens when a rooftop packaged terminal air conditioning air handler ptac and horizontal runs of air ducts are installed on a roof surface and when that air duct system is improperly sealed and also is lined with fiberglass insulation.
Each hvac system typically uses two plenum boxes.
Nearly half of all commercial buildings across the nation take advantage of rtu technology including office buildings manufacturing facilities hospitals retail venues and schools.
In this guide we explore rooftop hvac systems and when you might choose one over a ground based hvac system.
Plenum curb will convert a dedicated down discharge roof top unit into a plenum curb.