The A25 Series Warm Air Control with Manual Reset is designed to shut down fans, burners, dampers, etc., when the temperature of the sensed air becomes greater than the controller’s set-point. When the sensed temperature increases to the controller’s set-point, the A25’s switch will open. Manual reset is required to reclose the electrical circuit. The A25 may be used as a high limit control in the supply air duct (or plenum) where a lockout type control is desired or required by local code.
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Johnson Controls Penn A25 Series Warm Air Limit Control Datasheet
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