DEHUMIDIFICATION
HEATING LOCKOUT
This screen displays the heating lockout temperature. Heating will be disabled when
outside air is above the lockout temperature (80°F).
HOT START
This screen displays the Hot start entering condition temperature. Fan will run at
Heating mode when pipe temperature is over 86°F(adj.) if the OA temperature is
below 59°F(adj.)
SPACE SET POINTS DURING UNOCCUPIED MODE
The controller will have separate screens for unoccupied cooling and heating set
points.
Unoccupied Cooling Example:
Set point = 80°F, Hysteresis 4°F
Unoccupied cooling is enabled when space temperature equals 80°F + 2°F
(Hysteresis x 1/2) and above.
Unoccupied cooling is disabled when space temperature is below 80°F - 2°F
(Hysteresis x 1/2).
Unoccupied Heating Example:
set point = 60°F, Hysteresis 4°F
Unoccupied heating is enabled when space temperature equals 60°F
– 2°F
(Hysteresis x 1/2) and below.
Unoccupied heating is disabled when space temperature is above 60°F + 2°F
(Hysteresis x 1/2)
The Dehumidification menu allows the user to view and adjust dehumidification
control parameters.
DEHUMIDIFICATION MODE - OCCUPIED
Possible Modes:
• Inside RH*
• Inside dew point*
• Outside dew point
• Inside RH or inside dew point*
• Inside RH or inside dew point or outside dew point
• Inside RH and inside dew point*
• Inside RH and inside dew point or outside dew point
*Available during unoccupied mode.
There must be a constant call for dehumidification for the duration of the enable
delay for dehumidification mode to become enabled. The call remains active until
conditions are satisfied and dehumidification mode has been active for the min active
time
DEHUMIDIFICATION MODE
– UNOCCUPIED
If the unit is unoccupied while there is a dehumidification call, the unit will start and
dehumidify until the unoccupied dehumidification set points are satisfied.
The above dehumidification modes marked with an * indicate availability during
unoccupied mode.
The unoccupied dehumidification mode can be set differently than
the occupied dehumidification mode.
DEHUMIDIFICATION HYSTERESIS
This screen displays hysteresis for enabling dehumidification during occupied and
unoccupied conditions. %RH for indoor RH control and °F for outside or space dew
point control. Example: If indoor RH set point = 50%, dehumidification is enabled
when indoor RH equals 50% + (4% x 1/2) and above. Dehumidification is disabled
when indoor RH is below 50% - (4% x 1/2).
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