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contractors can restore factory-spec operation
If the control board signals a "stuck open" fault
streamlining HVAC safety switch troubleshooting
6 Cv equal percentage flow characteristic
Resideo S688A1007 Sail Switch 320074-702 contractors can restore factory-spec operationThe Resideo S688A1007 Sail Switch is a critical interlocking control designed to prove airflow before activating ancillary HVAC components like electronic air cleaners or humidifiers. Featuring SPDT switching, this duct mounted airflow switch operates within a velocity range of 75 to 250 Fpm, ensuring reliable equipment activation only when the system blower is moving sufficient CFM. The unit utilizes a large 26. 2 square inch sail (5" wide) with a
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