21
Fig. 32 below shows the arrangement of the power wires.
Fig. 32 —Outdoor Unit Power Wiring Arrangement
WIRING THE COMMUNICATION TERMINAL
BLOCK — Figure 33 is the communication port diagram for
the outdoor unit.
Fig. 33 —Outdoor Unit Communication Port
Diagram
COMMUNICATION CABLE — The type of
communication cable used is a shielded 2-core twisted pair
cable. The diameter of the wire should be AWG 18. The
maximum wire length should be within 3,937 ft between
outdoor and indoor units and within 820 ft between the wired
controller and indoor units. Communication wires are sold
separately but can be obtained through Carrier. Figure 34
below shows a typical communication wire from Carrier.
For typical communication wiring layout see Fig. 35.
LEGEND
1
— Main Power Terminal
2
— Ring Terminal
3
— Reusable Strain-Relief Wire Ties
4
— Ribbon
5
— Waterproof Connector
6
— Communication Cable
7
— Power/Ground Cable
1
2
3
4
5
6
7
LEGEND
K1, K2
Reserved
O, A
To kWh meter
X, Y
To centralized controller
P, Q
To indoor units communication bus
H1, H2
To outdoor units communication bus
O
Fig. 34 —Typical Communication Wire