Similarly, dual-duct and multizone systems can
benefit from “smart” controls which reduce cooling requirements
by increasing supply air temperatures. Hot deck
temperature settings can be controlled so that the
temperature of warm supply air is just high enough to
meet design heating requirements with 100 percent hotdeck
supply air and adjusted down for all other conditions
until the hot-deck temperature is at room temperature
when outside temperatures exceed 75°F (24°C). Dual
duct terminal units can be modified for VAV operation.