Lennox VPA048H4 Installation & Operation Instructions page 26

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