commercial-grade enclosure

Use a multimeter to verify the switch closes once that set point is reached

As a centrifugal blower assembly

or a pressure switch code on the furnace control board indicating insufficient vacuum

Resideo V8043A1003 Valve 323269-701 commercial-grade enclosureThe Resideo V8043A1003 Valve is a robust, 2 way normally closed zone valve designed for hydronic heating systems requiring reliable flow control. Featuring a 1 2 inch flare connection, this 24Vac motorized valve utilizes a high torque spring return mechanism to ensure positive closure. The V8043A1003 is engineered with a forged brass body, a stainless steel stem, and a brass seat to provide maximum corrosion resistance and longevity in high demand