JOHNSON CONTROLS
66
FORM100.50-EG12 (918)
Unoccupied Cooling –
In the unoccupied cooling mode, the unit controller will monitor
the zone temperature and compare it to the unoccupied zone cooling setpoint. The unoc-
cupied zone cooling setpoint is set through the setpoints key, cooling subsection of the
user interface. If the zone temperature is equal to or greater than the unoccupied zone
cooling setpoint temperature plus 0.5°F, the unit controller will place the unit in the unoc-
cupied cooling mode. The unit will remain in the unoccupied cooling mode until the zone
temperature is equal to or less than the unoccupied zone cooling setpoint minus 0.5°F.
Unoccupied Heating –
In order for the unoccupied heating to function, the night set back
setting must be set to enable. This can be done through the program key, heating subsec-
tion of the user interface. In the unoccupied heating mode the unit controller will monitor
the zone temperature and compare it to the unoccupied zone heating setpoint. The unoc-
cupied zone heating setpoint is set through the set points key, heating subsection of the
user interface. If zone temperature is equal to or less than the unoccupied zone heating
setpoint minus 0.5°F, the unit controller will place the unit in the unoccupied heating mode.
The unit will remain in the unoccupied heating mode until the zone temperature is equal
to or greater than the unoccupied zone heating setpoint plus 0.5°F.
Controls (Cont'd)
LD20073
FIGURE 4 -
OPERATIONAL MODE: VARIABLE AIR VOLUME (VAV)