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Dehumidification Away Mode
Dehumidification Away Mode protects the home when unoccupied for long periods
of time during hot and humid weather by maintaining the desired humidity and
temperature settings.
To start Dehumidification Away Mode, press
Menu, then press Dehumidification Away Mode.
The thermostat automatically follows settings
that are set by the dealer during installer setup.
Press Cancel to end Dehumidification Away
Mode.
Southern Dehumidification Away Mode
Options: (ISU 9180 to 9200)
• Fan: Auto, On or Circulate
• Low Limit Temperature Setting: The
thermostat allows the cooling system
to lower the indoor air to the Low Limit
Temperature Setting to control humidity.
• Temperature Setting: The temperature
maintained while Dehumidification Away
Mode is active and the desired humidity level is satisfied.
• Dehumidification Setting: The desired humidity level while Dehumidification
Away Mode is active.
Ventilation
Ventilation Control Method (ISU 10050)
The thermostat can control the fan to meet either ASHRAE or Percent On Time
settings. If the required ventilation has not been achieved for ASHRAE or Percent On
Time during calls for heat and cool, the thermostat will force the fan on.
• ASHRAE: The thermostat operates the fan to meet the ASHRAE 62.2
ventilation standard based on CFM, number of bedrooms, and square footage
of the house. ASHRAE 62.2 can only be met if the fan is running. If the fan is
off for any reason (set up to turn Off during Sleep period, turned off by user
etc.), ASHRAE 62.2 is not met during those times.
• Percent On Time: The thermostat operates the fan based on a percentage
entered in the installer setup (ISU 10120). For example, if Percent On Time
is set to 50%, the fan will run at random times during a 1 hour period until it
reaches a 50% run time (approximately 30 minutes). Options 10% to 100%.
To see all ventilation options, press MENU > INSTALLER OPTIONS > VIEW/EDIT CURRENT SETUP >
VENTILATION.
CTK04 ComfortNet™ Communicating Thermostat
19
I/O-CHTSTAT03 69-2688—11
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