minutes (or 3 hours, 45 minutes if EMR ON L is selected). The maximum time in cooling and heat pump applications is 3 hours and 45 minutes. Cooling or heat pump applications start earlier because it takes longer to reach the desired temperature. This feature also minimizes the use of the auxiliary stages if conditions are such that the compressor stages are adequate to reach the desired setpoint.
To select or deselect this feature, refer to the CONFIGURATION section (page 4, step 2).
Adjustable Humidity Display (RH)
(User Menu step 3) The room humidity display can be adjusted to read higher or lower by following the configuration menu and adjusting the humidity to a higher or lower value. The thermostat is calibrated at the factory to display a very accurate room humidity, but due to various
conditions and/or personal preference, you may wish to adjust the thermostat display higher or lower (up to +/-
20%). For example, if the thermostat displays room humidity of 40% but you want it to display 43% you can adjust it. To adjust, refer to the CONFIGURATION section (page 4,
step 3).
Programmable Automatic Humidity Reduction (DRY)
(User Menu step 4)
This feature automatically lowers humidity setting when the outside temperature drops. This is to prevent the interior windows/walls from reaching the dew point where water condenses on surfaces. To achieve automatic humidity reduction, the thermostat lowers the humidity when furnace cycles are long. When the furnace runs shorter cycles, it increases
7
humidity. For suggested settings see table below.
Programmable Dehumidification
Optimal Comfort Mode (OPTM
CMFT)
(User Menu step 5)When turned on this feature automatically reduces indoor humidity during calls for cooling if humidity is 2% above setting. Humidity is set by pressing the Humidity button when in the appropri- ate mode, in this case Cooling, and
pressing the 
or 
buttons to set desired humidity (range 40 to 95) level followed by pressing Run Program. This dehumidification feature uses less energy by maintaining temperature and dehumidifying only when a call for Cooling is required.
Configuration
