Carrier 50PD05 Operating And Service Instructions

Also see for 48PD05: User manual User's information manual Installation instructions

Table19-- MBBConnectionsDISPLAY CONNECTIONNAME POINT DESCRIPTION SENSOR LOCATION TYPE OF I/O PIN NUMBERINPUTSInput power from TRAN1 control box 24 VAC J1, 1-3IGC Fan Request gas section switch input J6, 4FDWN Fire shutdown switch supply/return/space switch input J6, 6HUM Space Humidity switch space switch input J7, 4Digital Scroll Unloader switch input J7, 6C.ALM Scroll Compressor Alarm switch input J7, 8CMRA Compressor A Feedback switch input J7, 10FIL.S Filter status switch indoor fan section switch input J9, 2-3CS.A1 Compressor A1 Current Sensor control box 0-5vdc digital input J9, 10-12SPT Space temperature (T55/56) space 1Ok thermistor J8, 1-2SPTO Space temperature offset (T56) space 1Ok thermistor J8, 2-3OAT Outdoor air temperature outdoor coil support 1Ok thermistor J8, 5-6indoor fan housing, or 1Ok thermistor J8, 7-8SAT Supply air temperature supply ductSCT.A Saturated condenser temperature, circuit A outdoor coil, circuit A 5k thermistor J8, 9-10RAT Return air temperature Return air Section 1Ok thermistor J8, 13-14FAN.S Fan status switch indoor fan section switch input J8, 15-160-5 VDC pressure J8, 18-20SSRA Suction pressure, circuit A compressor A suction transducerOUTPUTSCTLR Digital Scroll Ctrl Pwr relay J10, 11CCH Crankcase heat relay relay J10, 13OFC.1 Outdoor fan 1 relay relay J10, 19IDF Indoor fan VFD pwr relay relay J10, 21ALRM Alarm relay relay J10, 23HT.1 Heat Stage 2 relay relay J10, 25HT.2 Heat Stage 1 relay relay J10, 27COMMUNICATIONLocal Equipment Network (LEN) communication J5, 1-3Carrier Comfort Network (CCN) communication J5, 5-7Network device power 24 VAC J5, 9-10Scrolling Marquee Display (LEN) communication J4, 1-3Scrolling Marquee Display power 24 VAC J4, 5-6Modulation Board (AUXl) LEN communication J3, 1-3Optional ECB power 24 VAC J2, 1-248