You'll find these by searching for "bypass damper" and "bypass damper control" and you'll find excellent products from Carrier, Honeywell, Trane and other manufacturers, distributed by your local HVACR supplier as well as from online vendors like supplyhouse.com. Below we illustrate Honeywell'...
I’ve got components from both manufacturers in my system…they play together well. Like the Nordfab folks, KB’s customer service is first-class. Reply Greg Powers April 15, 2014 2:29 pm Just install a bunch of the KB Duct Systems ducting. It is not as polished as the Nordfab ...