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Electrical System Installation
Due to our policy of continuous product innovation, some specifications may change without notification.
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ELECTRICAL SYSTEM INSTALLATION
Communication / Connection (Power) Cable Specifications from Outdoor
Unit to Indoor Unit
Figure 80: Typical Single Zone Outdoor Unit to Indoor Unit Wiring and
Communications Cable Diagram For Wiring Lengths Up to 130 Feet.
Communication / Connection
(Power), Ground Cable
From Outdoor Unit
To Indoor Unit
13/16"
GN/YL
GN/YL = (Ground, Yellow)
7/16" ± 1/8"
• For communication / connection (power) wires between the Single
Zone outdoor unit and the indoor unit for lengths up to 130 feet,
use a minimum 14 gauge, four (4) conductor, stranded, shielded
or unshielded wire. If shielded, the wire must be grounded to the
chassis at the outdoor unit only.
• When the communication / connection (power) wire between the
indoor unit and outdoor unit is GREATER THAN 130 feet, use:
• A two (2) conductor wire for power.
• A two (2) conductor wire for communication / ground.
• Separate the power AT LEAST two (2) inches away from the
communication / ground wire.
• All wiring is still minimum 14 gauge, stranded, shielded, or
unshielded as cited above.
• Insulation material as required by local code.
• Firmly attach the cable; provide slack but secure in a way to pre-
vent external forces from being imparted on the terminal block.
• Wiring must be completed without splices.
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• Always verify the communication cable is connected to a commu-
nications terminal on the Single Zone Extended Piping unit. Never apply line voltage power to the communication cable connection. If
contact is made, the PCBs will be damaged.
• The shield of the communications cable connecting the outdoor unit to the indoor unit must be grounded only to the outdoor unit frame.
• Tie the shield of each cable segment together using a wire nut at the indoor unit. Maintain polarity throughout the communication network.
• Position the incoming power to the outdoor unit away from the power / communications cables from the outdoor unit to the indoor unit.
•
Never use a common multiple-core communications cable.
All power wiring and communication cable installation must be performed
by trained service providers working in accordance with local, state, and
National Electrical Code (NEC) / UL / ETL federal regulations related to
electrical equipment and wiring, and following the manufacturer product
diagrams, requirements, and instructions in this manual. Failure to do so
will lead to electric shock which can cause physical injury or death.
Figure 82: Typical HLV3 Power / Communication System Diagram For
Wiring Lengths Up to 130 Feet.
Figure 81: Single Zone Outdoor Unit to Indoor Unit Wiring and Com-
munications Cable Diagram For Wiring Lengths GREATER THAN 130
Feet.
Two-Conductor
Power Cable
GN/YL
GN/YL = (Ground, Yellow)
Two-Conductor
Communication /
Ground Cable
Separate At Least
Two (2) Inches
13/16"
7/16" ± 1/8"
1(L1)
2(L2)
13/16"
7/16" ± 1/8"
3
Figure 83: HLV3 Power / Communication System Diagram For Wiring
Lengths GREATER THAN 130 Feet.
Indoor Unit
Terminal
Power Supply
1 Phase, 208-230V
Connecting
Cable
Grounding Line
Grounding Line
Outdoor Unit
Terminal
If 3-pole disconnect is
required by local code,
install here.
Indoor Unit
Terminal
Power Supply
1 Phase, 208-230V
Connecting Cable
Grounding Line
Grounding Line
Outdoor Unit
Terminal
If 3-pole disconnect is
required by local code,
install here.
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