Off, Medium And High; Auxiliary Dehumidification - Lennox iComfort Wi-Fi Setup Manual

DEHUMIDIFICATION — HOW IT WORKS
Remember that the humidification only operates while in the heating mode and dehumidification only operates while in
the cooling mode.
OFF, MEDIUM AND HIGH—These modes allow user control of relative humidity between 40% and 60% RH.
These conditions must be met for either mode to operate:
•
de-humidification mode has been enabled, and
•
the unit is in COOL mode, and
•
de-humidification demand exists (0V present at H), and
MEDIUM mode also requires presence of cooling demand [Y for HP heat, or W for gas heat (W may be energized with G
de-energized)].
HIGH mode requires the system to be in the cooling mode and to of had a cooling call prior to the dehumidification call.
Their does not need a cooling call to be present to bring on Humid dehumidification. This mode can over-cool the space
by 2°F while trying to satisfying the dehumidification demand.
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Humiditrol or Auxiliary Dehumidifier mode requires:
NOTE - Systems using iComfort
be cut when using with a iComfort Wi-Fi
•
Wi-Fi is operational or outdoor sensor is installed and set up
•
Dehumidification has been enabled on installer settings, and
•
the unit is in COOL mode, (or if in AUTO, at least one thermostat cooling call made prior to the dehumidification
demand), and
•
a dehumidification demand exists (RH above set point), and
•
outdoor temp. below 95°F; indoor temp. above 65°F, and
•
for HUMIDITROL, adjust Humiditrol
Auxiliary Dehumidification (Communicating and Non-Communicating Outdoor Units
Control State
Auxiliary dehumidification is controlled by iComfort
thermostat with or without zoning.
Auxiliary dehumidification is controlled by dehumidification
control with or without zoning
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iComfort Wi-Fi
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and a dehumidifier - "Dehum" jumper on furnace/air handler control does not need to
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thermostat.
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comfort parameters as follows:
•
MAX adj. - Indoor temp > 2°F above heating set point
•
MID adj. - Indoor temp >
•
MIN adj. - Indoor temp > 2°F below cooling set point
Figure 18. Humidifier Controls (Non-Communicating Outdoor Unit)
HEAT setpoint + COOL setpoint
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Conditions
•
System must be in cooling mode and have a call for
dehumidification from the iComfort
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will start the auxiliary dehumidifier.
•
A separate wire from auxiliary dehumidifier will need to
be run to G terminal on indoor unit control to start the
blower.
Needs a dehumidification demand from the stand-alone de­
humidification thermostat and a separate wire run to G ter­
minal on indoor unit to start the blower.
7-Day Programmable Communicating Thermostat
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thermostat. This