Carrier 50TC*D17 Series Installation Instructions Manual page 16

Low- - Voltage Control Connections —
Locate the plug assembly in the electric heater section of
the main unit. Connect the plug with the mating low
voltage plug located on the heater.
Field
Connections
CTB
CONTL
BOARD
2
VIO
3 ORN
12
BRN
ORN
Plug
1
Assembly
VIO
Fig. 23 - - Accessory Electric Heater Control Connections
VIO BRN
2 3
VIO BRN BRN
Elec Htr
VIO HR2 BRN
VIO HR1 BRN
HR1: Heater contactor, first-stage
HR2: Heater contactor, second-stage
16
C09390