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| COM | 7 |
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| C08274 | |
| Fig. 44 - Indoor CO2 Sensor (33ZCSENCO2) Connec- | ||||||||
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| configuration information |
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| Outdoor Air Quality Sensor (PNO 33ZCSENCO2 plus | ||||||||
| weatherproof enclosure) — The outdoor air CO2 sensor is | ||||||||
| designed to monitor carbon dioxide (CO2) levels in the | ||||||||
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50TC | outside ventilation air and interface with the ventilation | ||||||||
damper in an HVAC system. The OAQ sensor is packaged | |||||||||
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| with an outdoor cover. See Fig. 45. The outdoor air CO2 | ||||||||
| sensor must be located in the economizer outside air hood. | ||||||||
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COVER REMOVED | SIDE VIEW |
C07135
Fig. 45 - Outdoor Air Quality Sensor Cover
Wiring the Outdoor Air CO2 Sensor — A dedicated power supply is required for this sensor. A
To connect the sensor to the control, identify the positive (4 to 20 mA) and ground (SIG COM) terminals on the OAQ sensor. See Fig. 43. Connect the 4 to 20 mA terminal to 50TC’s terminal
OAQ Sensor/RH Sensor
TB1PL SEN 13
TB1
COM 11
24 VAC
C08275
Fig. 46 - Outdoor CO2 Sensor Connections
Refer to Form
Smoke Detector/Fire Shutdown (FSD) — This function is available only when PremierLink is configured for (Space) Sensor Mode. The unit is
On 50TC units equipped with
Alarm state is reset when the smoke detector alarm condition is cleared and reset at the smoke detector in the unit.
If the PremierLink mode has been changed to Thermostat, disconnect the BLU lead (from LCTB
Filter Status Switch — This function is available only when PremierLink is configured for (Space) Sensor Mode.
PremierLink control can monitor return filter status in two ways: By monitoring a
Using switch input: Install the dirty filter pressure switch according to switch manufacturer’s instructions, to measure pressure drop across the unit’s return filters. Connect one side of the switch’s NO contact set to LCTB’s
Filter Switch (NO, close on rising pressure (high drop))
LCTB
Thermostat
R
TB1PL
10
C08216
Fig. 47 - PremierLink Filter Switch Connection
When the filter switch’s NO contact set closes as filter pressure drop increases (indicating
Using Filter Timer Hours: Refer to Form
Supply Fan Status Switch — The PremierLink control can monitor supply fan operation through a
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