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The Taco HAFC201-5 is a hydro air fan control that interfaces between a thermostat and an air handler, providing isolated end-switch control and built-in time delays. It energizes the end switch to start a boiler or pump when heating is required and permits low-speed fan operation when water temperature exceeds an optional aquastat setting. For cooling calls it energizes the condenser and switches the fan to high speed.
Hydro air fan interface with isolated end switch, automatic multi-speed switching, and time-delay functions
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