Dehumidification Control; Normal And Max - Lennox iComfort M30 Installation And Setup Manual

Dehumidification Control

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Dehumidification options are listed at menu > settings > humidity. Under Humidity Control, select
dehumidify to enable dehumidification. By default it is disabled.
There are four setting options which are Normal, Max, Humiditrol* and Aux Dehumidifier*.
* Requires hardware accessory
Slide bar adjust with a range of 40% to 60% RH.
Option Description
• Activate: If RH measured is >= (RH set point + 2%), and, Cool is ON, then D is inactive
(open circuit), and G is ON (if not already ON), and Y2 (if available) is ON.
• Deactivate: If RH measured is <= (RH set point - 2%) or Cool is OFF, then D is active (24VAC
present). G returns to the state determined by the thermostat control, either ON, Auto, or CIRC. (OR)
Normal
If there is no more cool demand, then D is active (24VAC present). G returns to the state determined
by the thermostat control, either ON, Auto, or CIRC, and Y2 (if available) is OFF.
NOTE: Note that H is inactive (open circuit) during dehumidification.
• Activate: IF RH measured is >= (RH set point + 2%), and if T measured >= T set point – 0°F to 4°F )AND
unit is in Cool mode (O = ON), then D is inactive (open circuit), and G, Y1, and Y2 (if available) are ON.
• Deactivate: IF RH measured is <= (RH set point - 2%), or if T measured < T set point -
Max
0°F to 4°F) or unit isn't in Cool mode(B = ON), then D is active. Y1, Y2, are OFF and G returns
to the state determined by the thermostat control, either ON, Auto, or CIRC.
NOTE: H is inactive (open circuit) during dehumidification.
Table 9. Dehumidification Modes
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