Carrier 50TCQD14 Installation Instructions Manual

Also see for 50TCQD: Installation instructions

Contents

23Table 5 – 50TCQ Defrost Board I/O and Jumper ConfigurationsInputsPoint Name Type of I/O Connection Pin Number Unit Connection NoteG Fan DI, 24Vac P2--- 3 CTB--- GY1 Cool 1 DI, 24Vac P2--- 5 CTB--- Y1Y2 Cool 2 DI, 24Vac P2--- 4 CTB--- Y2W1 Heat 1 DI, 24Vac P2--- 7 CTB--- W1W2 Heat 2 DI, 24Vac P2--- 6 CTB--- W2R Power 24Vac P3--- 1 CONTL BRD--- 8C Common 24Vac P3--- 2 CONTL BRD--- 4DFT1 DI, 24Vac DFT--- 1 to DFT--- 1 —DFT 2 DI, 24Vac DFT--- 2 to DFT--- 2 —OutputsPoint Name Type of I/O Connection Pin Number Unit Connection NoteIFO Fan On DO, 24Vac P3--- 9 REHEAT/HP--- 2OF OD Fan On DO, 24Vac OF OFRRVS1 DO, 24Vac P3--- 7 to P3--- 5 — Energize in COOLRVS2 DO, 24Vac P3--- 6 to P3--- 4 — Energize in COOLCOMP 1 DO, 24Vac P3--- 10 FPT1 --- REHEAT/HP--- 6COMP 2 DO, 24Vac P3--- 8 FPT2 --- REHEAT/HP--- 8HEAT 2 DO, 24Vac E--- HEAT TB4--- 1COM 24Vac P3--- 3 TB4--- 3ConfigurationPoint Name Type of I/O Connection Pin Number Unit Connection NoteSelect Jumper 24Vac P1--- 1 —2 Compressor 24Vac P1--- 3 — Use for 50TCQDSpeed--Up ConfigurationPoint Name Type of I/O Connection Pin Number Unit Connection NoteSpeed --- Up Jumper — JMP17 —Speed --- Up Jumper — JMP18 —Jumper for 1--- 3 seconds: Factory Test — The defrost interval timing is reduced by a factor of 0.1 seconds/minute based on the positions ofDIP switches SW1 and SW2 (i.e. 90 minutes will be reduced to 9 seconds).Jumper for 5--- 20 seconds: Forced Defrost — Defrost runs for 30 seconds if DFT2 is open.a50_9709Fig. 36 -- Defrost Control Board LocationTable 6 – DIP Switch PositionSwitch No.1 2 1 2 1 2 1 2 31 J 1 J 1 1 J J 1 J On0 J 0 J 0 J J 0 0 Off30 minutes 60 minutes(Factory default) 90 minutes 120 minutes Fan Delay