CellarPro AH6500 - Manual (Page 13)

13
Operating Guidelines
Region 1: Initial Cellar Startup
As the temperature pulls down, the relative humidity rapidly increases from the base humidity level. This increase
in humidity will happen naturally, so for a faster pull down it is strongly recommended that the humidifier not be
turned on until the cellar pulls down to the set point temperature.
Region 2: Normal Cooling Cycle
As the cellar temperature decreases it will reach the temperature set point, and the cooling unit turns off. The
cellar temperature increases over time until the controller calls for cooling, and the cycle repeats. During the
cooling cycle, it is normal for the humidity to drop below the humidistat set point. When the cooling unit turns off,
there will be a spike in humidity that will balance out during the cooling unit off cycle. This is caused by water left
on the fins of the cooling coil re-evaporating into the cellar, causing the short overshoot in humidity levels. The
humidifier will control to the humidistat set point independently of the cooling unit cycles.
Region 3: Excess Run Time
Based on the ambient conditions and the cooling unit loading, it is possible that the humidity set point will be too
high to allow the cooling unit to reach the desired temperature set point. If so, the unit will run constantly, wasting
electricity and shortening the life of the unit. If the unit runs excessively, either the temperature set point must be
raised or the humidity set point must be lowered until the unit cycles as shown in Region 2.