Lennox iComfort M30 - Humidification Control; Normal and Max

42
H/D or ACC terminals are congured correctly for
dehumidify control.
Cooling demand only: Y1 and Y2 come on
initiating the conventional cooling only demand.
Dehumidication demand only: D is de-energized
(G should also be energized) but with out Y1 or
Y2. D remains o󰀨 until the demand is satised or
if a true cooling demand comes on (unit must be in
cooling mode).
Both cooling and dehumidication demands:
Y1 and Y2 are ON (G must be ON and D is also
0 volts) When cooling is satised , D is still 0 volts
and G must stay ON until dehumidication demand
is satised.
Table 11. Auxiliary Dehumidier Option
Option Description
Normal
• Activate: If RH measured is >= (RH set point +
Activate: IF RH measured is >= (RH set point +
2%), and AND unit is in Cool mode (O = ON),,
THEN D is inactive (open circuit), AND G is
ON.
• Deactivate: IF RH measured is <= (RH set point
- 2%), or unit isn’t in Cool mode(B = ON), THEN
D is active. G returns to the state determined
by the thermostat control, either ON, Auto, or
CIRC.
Humidication Control
This option is available if the humidier accessory
is present and enabled in the Advanced Settings
> System Setup.
Under Advanced Settings > Terminal Settings,
verify that the H/D or ACC terminals are congured
correctly for humidify control.
Humidication is provided only when both a
humidication accessory is installed and the
thermostat is in heat mode.
• Setpoint Range: 15 – 45% RH
• Relative Humidity Controlled to 2% of Setpoint
(1% resolution)
• “H/D” Terminal to Humidier (deactivated during
cooling)
• This behavior changes based on H/D terminal or
ACC terminal
Normal and Max
The following table describes the function of normal
and max humidication settings.