Relays

109423 Bell & Gossett ZoneTrol II AZ-1A Add-A-Zone. The Bell & Gossett ZoneTrol II AZ-1A snap-on relay box is an easy to install single zone pump controller that mounts directly on any Bell & Gossett wet rotor circulator or Series PL booster...

Bell & Gossett Z-1 Single-Zone Pump Control 109424. Z-1 Single-Zone Pump Control for hydronic systems. 120V, 24VA thermostat current. This model features 24 VA transformer and 5 amp rating with quick-connect terminals. 6.5"wide x 5"high x...

The 109430 Bell & Gossett Z-6 ZoneTrol II provides DHW priority timer, post purge function and pump exercise into an economical and user-friendly package. Bell & Gossett’s ZoneTrol II is a ready to install controller for hydronic...