The Tracer® ZN.520 unit controller for terminal products is a microprocessor-based direct digital controller designed for use with a range of equipment, including classroom unit ventilators, UniTrane® fancoils, and ForceFlo™ cabinet heaters. Features available include automatic fan speed reset, automatic ventilation reset, manual output test, filter maintenance, peer-to-peer strategy, water value override, freeze avoidance, entering water temperature sampling, discharge air temperature, and generic I/O, says the manufacturer. The Trane Company, 3600 Pammel Creek Rd., La Crosse, WI 54601-7599; 608-787-3355 (fax); (e-mail); eProduct #190

Publication date: 09/25/2000