The Model 6404 Aprilaire zone control panel controls single- or multi-stage equipment, including gas, oil, and electric units as well as heat pumps. It can be used for two-, three, or four-zone installations. Because one panel covers a range of applications, it cuts down on the number of models needed to carry in inventory, the manufacturer says. Other features include a zoned fan that permits continuous fan operation in specific single zones for increased ventilation, and the ability to control equipment upstaging through the control panel or the zone’s thermostat, says the company.
Research Products Corp., P.O. Box 1467, Madison, WI 53701-1467; 800-334-6011 or 608-257-8801; 608-257-4357 (fax).