21
DIP
Switches
Speed-Up
Jumpers
C09275
Fig. 30 -- Defrost Control Board (DFB) Arrangement
The DFB is located in the 50TCQ’s main control box (see
Fig. 31). All connections are factory--made through
harnesses to the unit’s CTB, to IFC (belt--drive motor),
reversing valve solenoids and to defrost thermostats.
DEFROST
BOARD
(HP ONLY)
C12403
Fig. 31 -- Defrost Control Board (DFB) Location
Table 7. 50TCQ Defrost Board I/O and Jumper Configurations
Inputs
Point Name
Type of I/O
Connection Pin Number
Unit Connection
Note
G Fan
DI, 24Vac
P2---3
LCTB---G
Y1 Cool 1
DI, 24Vac
P2---5
LCTB---Y1
Y2 Cool 2
DI, 24Vac
P2---4
LCTB---Y2
W1 Heat 1
DI, 24Vac
P2---7
LCTB---W1
W2 Heat 2
DI, 24Vac
P2---6
LCTB---W2
R Power
24Vac
P3---1
CONTL BRD---8
C Common
24Vac
P3---2
CONTL BRD---4
DFT1
DI, 24Vac
DFT---1 to DFT---1
DFT 2
DI, 24Vac
DFT---2 to DFT---2
Outputs
Point Name
Type of I/O
Connection Pin Number
Unit Connection
Note
IFO Fan On
DO, 24Vac
P3---9
REHEAT---2
OF OD Fan On
DO, 24Vac
OF
OFR
RVS1
DO, 24Vac
P3---7 to P3---5
Energize in COOL
RVS2
DO, 24Vac
P3---6 to P3---4
Energize in COOL
COMP 1
DO, 24Vac
P3---10
FPT --- REHEAT---6
COMP 2
DO, 24Vac
P3---8
REHEAT---8
HEAT 2
DO, 24Vac
E---HEAT
HC---1 (TB4---1)
COM
24Vac
P3---3
HC---1 (TB4---3)
Configuration
Point Name
Type of I/O
Connection Pin Number
Unit Connection
Note
Select Jumper
24Vac
P1---1
2 Compressor
24Vac
P1---3
Use for 50TCQD
Speed--Up Configuration
Point Name
Type of I/O
Connection Pin Number
Unit Connection
Note
Speed---Up Jumper
JMP17
Speed---Up Jumper
JMP18
Jumper for 1--3 seconds: Factory Test, defrost runs for 9 seconds
Jumper for 5--20 seconds: Forced Defrost, defrost runs for 30 seconds if DFT2 is open
Содержание 50TCQD17-D24
Страница 36: ...36 C10818 Fig 51 RTU OPEN Control Module 50TCQ ...
Страница 46: ...46 APPENDIX IV WIRING DIAGRAMS cont C150373 Fig 52 50TCQ D17 Power Wiring Diagram 208 230 3 60 ...
Страница 47: ...47 APPENDIX IV WIRING DIAGRAMS cont C12399 Fig 53 50TCQ D17 Power Wiring Diagram 460 3 60 575 3 60 ...
Страница 48: ...48 APPENDIX IV WIRING DIAGRAMS cont C12686 Fig 54 50TCQ D24 Power Wiring Diagram 208 230 3 60 ...
Страница 49: ...49 APPENDIX IV WIRING DIAGRAMS cont C12401 Fig 55 50TCQ D24 Power Wiring Diagram 460 3 60 575 3 60 ...
Страница 51: ...51 APPENDIX IV WIRING DIAGRAMS cont C160005 Fig 57 RTU OPEN Control Diagram ...
Страница 52: ...52 APPENDIX IV WIRING DIAGRAMS cont 50HE500891 F 50HE500751 J Fig 58 PremierLinktWiring Diagram ...