
Carrier Accessory Kits
There are specific accessory kits sold for various field installed accessories. These kits vary based on model, size, voltage, manufacture date, and duct orientation. Some of these kits include Economizer, Power Exhaust, and Electric Heat. Refer to the Controls Quick Set−Up section for configuration and more information on these accessories.
Two−Position Damper
The
Indoor Air Quality
The indoor air quality (IAQ) sensor (part no. 33ZCSENCO2) is a
TB−2 . . . . . . . . . . 4−20mA Input
TB−3 . . . . . . . . . . Sensor Common
TB−R . . . . . . . . . 24vac Output
TB−C . . . . . . . . . Common (GND)
Outdoor Air Quality
The outdoor air quality (OAQ) sensor is a
TB−2 . . . . . . . . . . 4−20mA Input
TB−3 . . . . . . . . . . Sensor Common
TB−R . . . . . . . . . 24vac Output
TB−C . . . . . . . . . Common (GND)
Smoke Detectors
The smoke detectors are
TB−Fire Shutdown−1 . . . . . . . . . . . . . Dry Contact Source
TB−Fire Shutdown−2 . . . . . . . . . . . Discrete Input to Board TB−R . . . . . . . . . 24vac Output
TB−C . . . . . . . . . Common (GND)
NOTE: When a
Filter Status
The filter status accessory (part no. CRSTATUS002B00) is a
Filter status wires are pre−run in the unit harness and located near the switch installation location. Refer to the Filter Accessory installation instructions for more information.
Fan Status
The fan status accessory (part no. CRSTATUS003B00) is a
configured for fan status by setting Configuration→UNIT→FN.SW to normally open (1) or normally closed (2). Normally open (1) is the preferred configuration.
Fan status wires are pre−run in the unit harness and located near the switch installation location. Refer to the Fan Accessory installation instructions for more information.
NOTE: The fan status terminals on TB1 are NOT to be used.
Enthalpy Sensors
The enthalpy accessories (part no. CRENTSNG002A00 and CRENTDIF002A00) are
Normal status is an active switch which tells the control that enthalpy is LOW. The actual switch terminal LOW is normally closed. Refer to the Enthalpy Kit installation instructions for more information on the installation.
Return/Supply Air Temperature Sensor
The temperature sensor (part no. 33ZCSENSAT) is a
the unit must be configured by setting Configuration→UNIT→RAT.S to YES. Using a RAT will allow differential dry bulb control of the economizer. The duct supply air temperature (SAT) may be used to replace the SAT sensor that is internal to the unit. A supply duct SAT measurement is valid for heating mode display while the
Space Humidistat
The Space Humidistat (part no. −−HL−−38MG−029) is a wall mounted device with an adjustable setpoint to control humidity levels. The humidistat input is provided on the field connection terminal board. The Space Humidity Switch configuration, Configuration→UNIT→RH.SW, identifies the normally open or normally closed status of this input at LOW humidity.
TB−HUMIDISTAT1 . . . . . . . . . . . . Discrete Input to Board TB−HUMIDISTAT2 . . . . . . . 24 VAC Dry Contact Source
NOTE: The humidistat terminals are only in use when the unit is equipped with the Humidi−MiZer factory option.
48/50PG and PM
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