Your humidifier, when wired properly, will allow a stream of water to flow through the water panel only during the humidification cycle. If the humidistat is not requesting humidification, then the water should not be running through to the drain. The water flow rate into the model 700 is fixed to 6 gallons per hour, during the humidification cycle. The water flow down the drain depends on the evaporation effect within your environment, estimated between 4 to 4.5 gallons per hour.
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