ICM251 Fan Blower Control - Dual On/Off Delay Timer (Adjustable Time Delay)

Controls the circulating fan in heat pump, air conditioning and forced air systems. Delay on make lets air reach proper level prior to turning on the fan. Off delay timing function continues to run the fan at the end of the heating/cooling cycle, thereby purging ducts of residual air and increasing system efficiency.

Product Features

• Drives fan directly
• High power, relay output
• Dual function fan delay timer
• Controls the circulating fan in heat pump, A/C and forced air systems
• OFF delay controls fan relay to purge ducts of residual air at the end of the heating/cooling cycle.
• ON delay allows air to reach the proper comfort level prior to energizing the fan.

Mode of Operation - Power must be applied at all times. Upon closure of the initiate switch the delay on make period begins. Once complete, the load is energized and remains energized as long as the initiate switch is closed. When the initiate switch opens, the delay on break period begins. Once complete, the load is de-energized and all time delays reset. If the initiate switch re-closes during the delay on break period, the load remains energized and the delay on break period is reset. Removal of the input power resets all timing functions. Should the initiate switch open during the delay on make period, the delay on make period is reset to zero.