Under certain conditions, it may be necessary to increase the rate of renewal of the air in your home through high-speed mode. Depending on the type of installation, high speed cycle can be triggered manually or by timer, humidistat or other commands.
In automatic mode, the over-run timer calculates the amount of time to operate, depending on how long the fan has been running for. (Alternatively it can be manually set to 5, 20 or 30 minutes run-on time).
Enviro Fresh Electronic Water Timer Manual
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