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7
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
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