Bell & Gossett Z-2 Zone Relay 109425

Two-zone Zone-Trol II pump control for hydronic circulators with a combined load of 20 amps at 120v and quick-connect terminals. Zone-Trol II controls enable the DHW zone to have priority over heating zones for limited periods with user adjustable settings (OFF, 30-minute, 60-minute). Includes 90-second post purge timer and 10-second exercise after 72 hours of inactivity.