109 • dap4 User Manual
b)
Night time mode
i)
The night mode can be activated by either; an optional light sensor input or by a
programmed time schedule.
ii)
While in the night mode, the temperature and humidity set points will be offset by the
amount of their offset band settings. See section 3c for details.
iii)
A “Night Sch” status message will appear and the offset Temperature (“TSP”) and
offset Dehumidify (“HSP”) set points are displayed instead of the normal set points.
iv)
Set point offsets work as follows:
Normal daytime mode
•
Cooling and Heating Temp set point = Temp set point
•
Humidify and Dehumidify set point = Hum set point
Temp and Hum set points are adjusted in menu B “Set point”.
Nighttime mode
•
Cooling Temp set point = Temp set point + Cooling offset
•
Heating Temp set point = Temp set point - Heating offset
•
Humidify set point = Hum set point - Humidify offset
•
Dehumidify set point = Hum set point + Dehumidify offset
Night time offsets are adjusted in menu C “Clock/Scheduler”.
v)
CO2 control can be disabled during the nighttime by setting “Night CO2 cntrl” to
“No” (default setting) in Menu J “Factory settings”. CO2 control will resume during
daytime mode.
