Carrier 50TCQ 04 Series Service And Maintenance Instructions page 30

See Fig. 41 through Fig. 44 and the unit wiring diagram
for proper placement.
Fig. 41 − Accessory Electric Heater Control
Connections (HP−2, Size 06, 575V Only)
DEFROST
BOARD
E-HEAT
ORN
P3-3
BRN
ORN
1
TB4
VIO
Field
Connections
HR1: On Heater 1 in Position #1
HR2: On Heater 2 in Position #2 (if installed)
Fig. 42 − Accessory Electric Heater Control
Connections (HP−1 Except Size 12 and 121, HP−2
Except Size 12)
C11554
BRN
3
VIO BRN BRN
Elec Htr
VIO HR2 BRN
VIO HR1 BRN
C09013
TRAN1 FROM POWER SCHEMATIC
CB
24V 24V BRN
GRN/
3.2 AMPS
YEL
RED 24V
RED
EHR
RED 8 6 ORN
NOTE 4
AND 6
FPT
BLK
BLK
BRN
Fig. 43 − TB4 Wiring (HP Only)
W2 Use
C Use
R Use
Fig. 44 − TB4 Terminal Use (HP Only)
30
BRN
TRAN2 FROM POWER SCHEMATIC
CB
24V
BRN
GRN/
3.2 AMPS
YEL
1 EHR 0
ORN BRN
1 OFR 0
VIO BRN
BRN
ORN
RED
TB4
ELECTRIC
BRN
BRN
HEAT(ACCESSORY)
SEE HEATER LABEL DIAGRAM
BRN
C10561
NOTE:
Optional Outdoor Temperature Control
at One Heater Stage –
Move heater wire to this terminal and
connect outdoor temperature switch
between 2nd and 3rd terminals.
C10604
5
3
24V
24V