Lennox S40 User Manual page 27

Table 3. Humidity Control Modes of Operations
Setting
Mode
These thermostat modes allow the homeowner
to control the relative humidity (RH) between
15% and 45%. The following conditions must be
met for either mode to operate:
• Humidification mode has been enabled
• Unit is in HEAT mode
• Humidification demand exists
Additionally, the NORMAL mode requires that
heat demand exists.
humidification set−point
15%
This setting is recommended when the air
outside is not too humid and the outdoor unit is
either staged or variable capacity.
• Staged Outdoor Unit: This setting is
recommended when the outdoor air is
excessively humid. This setting may cool your
home below the set temperature in order to
remove excessive indoor humidity.
• Variable Capacity Outdoor Unit:
Recommend when the outdoor air is
excessively humid. This setting adjusts cooling
based on installed duct sensor data. This
setting may cool your home below the set
temperature.
NOTE: Discharge air temperature sensor
(catalog number 88K38) is required.
Description
40%
45%
Table 3. Humidity Control Modes of Operations
Setting
Mode
This feature is applicable only to Lennox
communicating thermostats with either Lennox
communicating staged or variable capacity
outdoor units only. This setting automatically
adjusts both indoor fan speed and cooling power
based on local climate conditions using Climate
IQ
below the set temperature.
The below adjustment tools are only available with either Max or
Climate IQ setting selected.
overcooling
0°F
0°F
dehumidification set−point
40%
humidification set−point + dehumification set−point
15%
27
Description
technology. This setting may cool your home
®
2°F
48%
40%
48%
4°F
60%
60%