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always verify the part number against the specific unit's data plate
Verify 24V across the bottom heater terminals
and zone dampers to ensure you do not exceed the 1
ensuring zero-clearance issues during furnace repair
Common Questions & Technical Support Can the RV47L-3/8 be installed upside down
Resideo V4043A1002 Zone Valve 320788-703 always verify the part numberThe Resideo V4043A1002 Zone Valve is a reliable, high performance solution for controlling the flow of hot or chilled water in closed loop systems. This 120V hydronic zone valve features a 1 2 inch flare connection and is designed with a normally closed configuration, utilizing a spring return to close mechanism for fail safe operation. Built for durability in demanding environments, it incorporates a brass body, a corrosion resistant stainless steel