Two new Tracer™ zone controllers, ZN.511 and ZN.521, are offered in compact enclosures designed for easy field installation in minimal space, says the company. Both units comply with the LonMark® space comfort control (SCC) profile. Features include: automatic heat/ cool mode determination to reduce manual system adjustments; water temperature sampling to provide accurate two-pipe system changeover to maximize comfort; occupancy sensor input for standalone energy savings; and random start to reduce demand spikes, the company says.

The Trane Company, 3600 Pammel Creek Rd., La Crosse, WI 54601-7599; 608-787-3355 (fax); (e-mail); (website).

eProduct #181

Publication date: 03/12/2001