Carrier WeatherMaster 50HC14 Installation Instructions Manual

Also see for WeatherMaster 50HC14: Service and maintenance instructions Service and maintenance instructions Installation instructions

Contents

48SPACE SENSORSThe PremierLink™ controller is factory-shipped config-ured for Space Sensor Mode. A Carrier T-55 or T-56 spacesensor must be used. T-55 space temperature sensor providesa signal of space temperature to the PremierLink controller.T-56 provides same space temperature signal and it allows foradjustment of space temperature setpoints from the face ofthe sensor by the occupants.Fig. 63 — T-55 Space Temperature Sensor WiringConnect T-55See Fig. 63 for typical T-55 internal connections. Connectthe T-55 SEN terminals to TB3 terminals 1 and 3 (seeFig. 64).Fig. 64 — PremierLink Controller T-55 SensorConnect T-56See Fig. 65 for T-56 internal connections. Install a jumperbetween SEN and SET terminals as illustrated. Connect T-56terminals to TB3 terminals 1, 3 and 5 (see Fig. 66).CONNECT THERMOSTATA 7-wire thermostat connection requires a 24-v powersource and a common connection. Use the R and C terminalson the CTBT’s THERMOSTAT connection strip for these.Connect the thermostat’s Y1, Y2, W1, W2 and G terminals toPremierLink TB3 as shown in Fig. 67.If the 50HC**14 unit is equipped with factory-installedsmoke detector(s), disconnect the factory BLU lead at TB3-6(Y2) before connecting the thermostat. Identify the BLU leadoriginating at CTB-DDC-1; disconnect at TB3-6 and tape off.Confirm that the second BLU lead at TB3-6 remains connect-ed to PremierLink J4-8.If the 50HC**14 unit has an economizer system and free-cooling operation is required, a sensor representing ReturnAir Temperature must also be connected (field-supplied andinstalled). This sensor may be a T-55 Space Sensor (seeFig. 63) installed in the space or in the return duct, or it maybe sensor P/N 33ZCSENSAT, installed in the return duct.Connect this sensor to TB3-1 and TB3-3 per Fig. 64.Fig. 65 — T-56 Internal ConnectionsFig. 66 — PremierLink Controller T-56 SensorFig. 67 — Space Thermostat Connections2 3 4 5 61SW1SENBRN (GND)BLU (SPT)RED(+)WHT(GND)BLK(-) CCN COMSENSOR WIRINGSEN J6-7J6-613TB3 PLSEN2 3 4 5 61SW1SEN SETCool WarmBRN (GND)BLU (SPT)RED(+)WHT(GND)BLK(-) CCN COMSENSOR WIRINGJUMPERTERMINALSAS SHOWNBLK(T56)SEN J6-7J6-613TB3 PLSENSETJumperTB3 PLJ6-55SETG J4-12J4-10J4-8Y1Y22R R46J4-6J4-4W2C810CSPACETHERMOSTATCTBTHERMOSTATPLW1TB3CTBTHERMOSTAT