Series ZCD zone control dampers are designed to meet the demand for zone-specific products combined with individual controls. Model ZCDRS25 can be installed in existing round duct. It comes with 24-V modulating actuator and field-wired, wall-mounted thermostat. Models ZCD36 and ZCD60 are complete with actuation, wall thermostat, and side plate. The ZCD36 and ZCD60 are for use in single-mode applications only. Model ZCD-VAV with auto changeover is available for round and rectangular duct. A factory-installed floating actuator coupled with a room and duct thermostat evenly controls flow and heating to cooling changeover, says the company. Models VFBD15 and VFBD25 ValueFlo balancing dampers have double butterfly-type blade arrangements, which provide smooth airflow and integral airflow measuring ports, the company states.
Ruskin, 3900 Dr. Greaves Rd., Kansas City, MO 64030; 816-761-7476; 816-761-0521 (fax); www.ruskin.com.