system is in AUTO mode, dehumidify options are available if the last system operation was a call for cooling.
To Select Dehumidification
Press the features button three times. The first press displays the outdoor air temperature, the second press displays the humidify options and the third press will display the current dehumidify selections.
The mode button is used to cycle through the dehumidify selections.
Additional Dehumidify Comments
Dehumidification can be enhanced (with some efficiency loss) by turning blower off immediately at the end of each cooling cycle (eliminating normal 90 sec blower off delay). Where maximum humidity removal is desired, this should be done. Fan coils have the capability of removing this off delay. On FK or FV Fan Coils, set delay tap to 0/0. On standard fan coils, a jumper can be cut to disable off delay. Refer to fan coil Installation Instructions for details. If FAN is set for continuous operation (fan On icon displayed), G output is turned off for 5 minutes at the end of each cooling cycle as long as dehumidify demand exists.
Like humidify, dehumidify actions are initiated when humidity is 1% above setpoint and are terminated when humidity drops to 1% below setpoint. This prevents unnecessary toggling of dehumidify actions when humidity is near setpoint.
Dehumidify Output and Equipment Connections
When there is a dehumidify demand, dry contact is activated, meaning that a 24VAC signal is removed from the DHUM or DH output terminal. In other words, dehumidify output logic is reversed - output is turned On when no dehumidify demand exists and is turned OFF when demand exists.
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