The redesigned “pro” Series temperature controls for radiant floor heating and snow melting applications allow contractors to integrate multiple hydronic system controls. The six new controls are available with variable-speed injection pump or a floating action mixing valve. According to the manufacturer, other notable features include easy outdoor reset, simple wiring, integrated boiler reset, DHW priority, and automatic protection for the boiler against damage from condensing gases. The SYSTEMpro 311 is a weather-responsive master control used in multiple temperature hydronic systems.
Uponor Wirsbo, 5925 148th St. W., Apple Valley, MN 55124; 952-891-2000 or 800-321-4739; 952-891-2008 (fax); www.wirsbo.com (website).