hvac part 2, exam 3 100% CORRECT AND UPDATED!

rooftop single-zone - ANSWERa typical _____ unit consists of a supply fan, one or more stages of cooling, one or more stages of heating, controls, ductwork, and power connections 1 - ANSWERa rooftop VAV unit uses static pressure sensor to control the discharge air pressure at ___" WC in the duct wide - ANSWERultra quiet fans typically reduce air noise because the fan blades are _____ 55, 1 - ANSWERthe supply air of a variable air volume system is designed to be ___°F at ___" WC static pressure access and clearances - ANSWERbefore installing a light commercial system it is a good idea to check the site for _____ black iron - ANSWERwhen a unit is natural gas fired, _____ piping must be used to connect the unit air filters - ANSWERa unit should not be operated and/or started without _____ in plac