Carrier 48TC*D08 appendix PREMIERLINKt CONTROL, Supply Air Temperature Sensor Supply Air

48TC

PREMIERLINKt CONTROL

The PremierLink controller (see Fig. 41) is compatible with Carrier Comfort Networkr (CCN) devices. This control is designed to allow users the access and ability to change factory-defined settings, thus expanding the function of the standard unit control board. CCN service access tools include System Pilot (TM), Touch Pilot (TM) and Service Tool. (Standard tier display tools Navigatort and Scrolling Marquee are not suitable for use with latest PremierLink controller (Version 2.x).)

The PremierLink control is factory-mounted in the 48TC unit’s main control box to the left of the LCTB. Factory wiring is completed through harnesses connected to the LCTB thermostat. Field connections are made at a 16-pole terminal block (TB1) located on the bottom shelf of the unit control box in front of the PremierLink controller The factory-installed PremierLink control includes the supply-air temperature (SAT) sensor. The outdoor air temperature (OAT) sensor is included in the FIOP/accessory EconoMi$er 2 package.

Refer to Fig. 41 for PremierLink connection locations.

NOTE: Refer to the Rooftop PremierLink Installation, Start-Up, and Configuration Instructions (Form 33CS-58SI) for complete PremierLink configuration, operating sequences and troubleshooting information. Have a copy of this manual available at unit start-up.

NOTE: PremierLink controller is shipped in Sensor mode. To be used with a thermostat, the PremierLink controller must be configured to Thermostat mode. Refer to PremierLink Configuration instructions for Operating Mode.

Supply Air Temperature (SAT) Sensor — On FIOP-equipped 48TC unit, the unit is supplied with a supply-air temperature (SAT) sensor (33ZCSENSAT). This sensor is a tubular probe type, approx. 6-inches (12.7

mm)in length. It is a nominal 10-k ohm thermistor. See Table 15 for temperature-resistance characteristic.

The SAT is factory-wired. The SAT probe is wire-tied to the supply-air opening (on the horizontal opening end) in its shipping position. Remove the sensor for installation. Re-position the sensor in the flange of the supply-air opening or in the supply air duct (as required by local codes). Drill or punch a 1/2-in. hole in the flange or duct. Use two field-supplied, self-drilling screws to secure the sensor probe in a horizontal orientation. (See Fig. 42.)

The PremierLink controller requires the use of a Carrier electronic thermostat or a CCN connection for time broadcast to initiate its internal timeclock. This is necessary for broadcast of time of day functions (occupied/unoccupied).

SUPPLY AIR TEMPERATURE

SENSOR

SUPPLY AIR

ROOF CURB

RETURN AIR

C08200

Fig. 42 - Typical Mounting Location for Supply Air Temperature (SAT) Sensor on Small Rooftop Units

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