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#4655 Aprilaire Manual Humidistat
#4655 Aprilaire Manual Humidistat
- For use with Aprilaire models 110, 112, 220, 224, 350, 360, 400, 440, 445, 445A, 448, 500, 550, 558, 560, 560A, 568, 700, 760, 760A and 768.
- Can be wall mounted or mounted on return plenum (plenum cutout templet included).
- For duct mount, locate at least 6" upstream of humidifier, humidifier bypass ductwork or fresh air intake ductwork.
- Designed for low voltage service to control humidification equipment.
- An increase in relative humidity expands the nylon ribbon which opens the control switch to stop operation of the humidifier.
- A decrease in relative humidity reverses the process and closes the control switch.
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