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Relative Humidity Sensor (Polarized Male Connector)
48TC**16
C10839
Fig. 75 - Duct Relative Humidity Sensor Typical Wiring
Humidistat: The accessory humidistat provides the RTU Open insight to the relative humidity in the space. The humidistat reads the RH level in the space and compares it to its setpoint to operate a dry contact. The humidistat is a dedicated input on the configurable input 9 and tells the RTU Open when the RH level is HIGH or LOW. The normal condition for humidity is LOW. A normally open humidistat is the factory default control for the
To wire in the field:
S
Smoke Detector/Fire Shutdown (FSD) —
On 48TC**16 units equipped with
The Fire Shutdown Switch configuration, MENU→Config→Inputs→input 5, identifies the normally open status of this input when there is no fire alarm.
Connecting Discrete Inputs —
Filter Status: The filter status accessory is a
Fan Status: The fan status accessory is a
Remote Occupancy: The remote occupancy accessory is
a
Also set MENU→Schedules→occupancy source to DI on/off. Input 8 or 9 is recommended for easy of installation. Refer to Fig. 65 and Table 8 for wire terminations at J5.
Power Exhaust (output): The relay used by the RTU Open board to control power exhaust is a dry contact which means it does not have 24vac. This 24vac must be connected to the relay to allow it to operate the power exhaust relay in the PE accessory. A 24vac source must be provided to
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