Microprocessor Controller for DOAS
20
®
H
EATING
L
OCKOUT
This screen displays the heating lockout temperature. Heating will be disabled
when outside air is above the cooling lockout temperature (80ºF)
.
S
PACE
S
ETPOINTS
DURING
THE
U
NOCCUPIED
M
ODE
The controller will have separate screens for unoccupied cooling and heating
setpoints. Reference Occupied control variables for further detail.
Unoccupied Cooling Example: If setpoint = 80ºF, unoccupied cooling is enabled
when room equals 80ºF and above. Unoccupied cooling is disabled when room
temperature is below 75ºF.
Unoccupied Heating Example: If setpoint = 60ºF, unoccupied heating is enabled
when room temperature equals 60ºF and below. Unoccupied heating is disabled
when room temperature is above 65ºF.
T
HIS
SCREEN
DISPLAYS
M
ETHOD
FOR
D
EHUMIDIFICATION
.
Possible Methods:
• Outside Air Temp is greater than cold coil setpoint plus offset (10ºF)
• 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 minimum active time. Reference Ctrl Variables/Advanced/Unit Config/Unit
Configuration Occupied Dehum Call for dehumidification method options.
T
HIS
SCREEN
DISPLAYS
M
ETHOD
FOR
D
EHUMIDIFICATION
IN
U
NOCCUPIED
M
ODE
.
If the unit is unoccupied while there is a dehumidification call, the unit will start
and dehumidify until the unoccupied dehumidification setpoints 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. Reference Ctrl Variables/Advanced/
Unit Config/Unit Configuration Unoccupied Dehum Call for dehumidification
method options.
Control Variables
Dehumidification
The
Dehumidification
menu allows the user to view and adjust dehumidification
control parameters.
Menu
