27
Figure 27. Typical Communication Wiring
Outdoor Unit
(PQ)
Refrigerant Piping
Coil
AHU
Control Kit
P Q
All Drain Wires will connect from outdoor unit chassis to mode selection box chassis at the end of
the signal run.
18 GA., stranded, 2-conductor, shielded control wire (polarity sensitive).
Typical Wiring Diagram, NEC/CEC and Local Codes apply.
Install a terminating resistor (Ω120) on terminals P&Q on the indoor unit
which is furthest from the outdoor unit.
Indoor Unit
Indoor Unit
Indoor Unit
Outdoor Unit
Refrigerant Piping
(PQ)
Coil
AHU
Control Kit
Indoor Unit
Indoor Unit
Indoor Unit
P Q
All Drain Wires will connect from outdoor unit chassis to indoor unit chassis at the end of the signal
run.
18 GA., stranded, 2-conductor, shielded control wire (polarity sensitive).
Typical Wiring Diagram, NEC/CEC and Local Codes apply.
Install a terminating resistor (Ω120) on terminals P&Q on the indoor unit
which is furthest from the outdoor unit.
Header Pipe Kit
V8HDRK04
Figure 28. Typical Communication Wiring
Summary of Contents for VPB H4-3P Series
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