32
Rooftop Dedicated Outdoor
Air System Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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Space Temperature and Humidity Sensors
When a unit is equipped with space temperature and humidity reset, both a wall-mounted temperature sensor and a wall-mounted humidity
sensor ship loose with the unit. Both sensors must be mounted in the space served by the ventilator at a height of approximately five (5)
feet from the floor. Two (2) individual sensors are provided to prevent interference, but the individual enclosures may be installed on a wall
immediately next to each another. Wiring between the ventilator and the temperature sensor must be through a field-supplied, four-conductor,
22 AWG, twisted, shielded, and stranded communication cable.
Terminations must be made per the following chart.
Space Temperature Sensor
Terminal Strip TB3
SP1
13
SP2
14
SN
4
SN
5
Shield
G
Table 13: Space Temperature Sensor Terminations.
Wiring between the ventilator and the space humidity sensor must be through a field-supplied, three-conductor, 22 AWG, twisted, shielded,
and stranded communication cable.
Terminations must be made per the following chart.
Table 14: Space Humidity Sensor Terminations.
Space Humidity Sensor
Terminal Strip TB3
SIG
6
–
7
+
HB
Do not use a single, multi-conductor cable to wire both the space
temperature and humidity sensors. Use separate communication cables
for each sensor. Incorrect wiring may result in communication prob-
lems or failure to operate at all.
Space CO
2
Sensor
A space-mounted CO
2
sensor is provided with ventilators that include a modulation controls sequence based on CO
2
. The sensor must be
mounted in the space served by the ventilator at a height of approximately five (5) feet from the floor. Wiring between the ventilator and the
space CO
2
sensor must be through a field-supplied, three-conductor, 22 AWG, twisted, shielded, and stranded communication cable.
Terminations must be made per the following chart.
CO
2
Sensor
Terminal Strip TB3
OUT1
33
GO
34
G+
35
Table 15: Space CO
2
Sensor Terminations.
ELECTRICAL CONNECTIONS
