ZD20X8TZ/U Unmanaged The WT8840 series is the

The WT8840 series is the Water Heater Control for trade use to replace WV8840 valves used in A O Smith and Bradford White Water Heaters

With a standard footprint and simple interface

Copper and Stainless steel well assemblies for use with Aquastat sensors

Combination gas control for use with hot surface/direct spark systems in 24 VAC

The thermostat is mounted to the plate

ZD20X8TZ/U Unmanaged The WT8840 series is theThis easy to wire damper includes a 24 volt motor used to control circulating air in HVAC systems. The ZD is a power close and spring open damper used when a normally open damper is required. It's typically used with TrueZONE and other electronic zoning systems.