26
Outdoor unit
(PQE)
Ground cable shield
DO NOT connect to E
Branch box
Note: Branch box does not require
power or communication wiring
Refrigerant piping
18 GA., stranded, 3-conductor, shielded control wire (polarity sensitive).
All shields of shielded cable connect to GROUND terminal, not to E.
Install a terminating resistor at the last indoor unit (terminals P and Q) of the daisy chain.
Typical Wiring Diagram, NEC/CEC and Local Codes apply.
P Q
Figure 27. Typical Communication Wiring
Outdoor unit
(PQE)
Ground cable shield
DO NOT connect to E
Branch box
Refrigerant piping
Branch box
18 GA., stranded, 3-conductor, shielded control wire (polarity sensitive).
All shields of shielded cable connect to GROUND terminal, not to E.
Install a terminating resistor at the last indoor unit (terminals P and Q) of the daisy chain.
Typical Wiring Diagram, NEC/CEC and Local Codes apply.
P Q
NOTE - Branch box does not require
power or communication wiring
Refrigerant
piping
Figure 28. Typical Communication Wiring
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