Lennox ZCC150 - Page 35


-

air sensible control is the default economizer control. An


options.

An IAQ sensor is used when demand control ventilation

lower than traditional minimum air requirements resulting
in cost savings. The IAQ sensor allows the A6 to open
dampers to traditional ventilation requirements as room

TABLE 8
Sensors
Dampers will modulate to
55°F discharge air (RT6)
when:
Single OA Sensible

is lower than free cooling
setpoint.
Single OA Sensible
OA temperature and humidity

setpoint
󰀨

OA temperature and humidity

temperature and humidity

IAQ Sensor
CO
2

than CO
2
setpoint.
ECONOMIZER
ECONOMIZER
OUTDOOR COIL
FIGURE 18
MIXED AIR SENSOR (R1) LOCATION
R1 MIXED AIR
SENSOR
FIGURE 19