D x 47 in.
Roof top hvac plenum.
Commercial rooftop mounted combined air conditioning or heat pump units.
Rooftop mounted central air conditioning systems may include both the cooling unit evaporator coil blower fan filters and the compressor condenser unit in one package.
Supply and or return plenums with field cut openings in roof curb floor.
In the event of an abnormal condition failure of fan motor dirty condenser coil dirty filters the high pressure switch.
R410a roof top air conditioners high pressure switch lockout circuit air conditioners and heat pumps using r410a refrigerant utilize a factory installed high pressure switch safety circuit.
Constructed of 26 gauge sheet metal the knock down design of the plenum takes up very little space and simplifies transporting to the job site.
W x 20 in.
And is designed for use with all heating and cooling applications.
Rooftop heat pumps extremely efficient heating and cooling best for temperate regions.
Commercial ac units are designed for high volume high performance and daily use applications.
The trim to fit plenum fully assembled measures 20 in.
Pre fabricated plenum roof curbs are available in the following.
At above right is a complex of roof mounted ac heat pump systems on a christchurch new zealand high.