Installation Electrical

Unit Wiring Diagrams

Specific unit wiring diagrams are provided on the inside of the control panel door. Typical unit wiring diagrams are in “Wiring Diagrams,” p. 81. Use these diagrams for connections or trouble analysis.

WARNING

Grounding Required!

Follow proper local and state electrical codes for requirements on grounding. Failure to follow code could result in death or serious injury.

Supply Power Wiring

Wiring must conform to NEC and all applicable code requirements.

It is the installer’s responsibility to provide adequately-sized power wires and proper unit grounding.

Bring supply wiring through provided equipment knockouts located at the power connection point on the unit. Equipment submittals should be referred to for the exact electrical access connection point. Connect the power wires to the power connection point provided.

Connection to the installer-provided ground path must be made to the green wire or green grounding screw provided on each unit.

Locate unit wiring diagrams on the inside of the control box cover. Refer to the unit-specific wiring diagrams for wiring, connection point, and fuse installation information. Refer to the unit nameplate for unit-specific electrical information, such as voltage, minimum circuit ampacity (MCA), and maximum fuse size (MFS).

WARNING

Hazardous Voltage!

Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury.

NOTICE

Use copper conductors only!

Unit terminals are not designed to accept other conductor types. Failure to use copper conductors could cause equipment damage.

NOTICE

Correct phase critical!

Correct phase sequence is critical. If phase sequence of the incoming line voltage is not correct, it could cause motor damage.

Electrical Connections

Units have one of three different connection points, depending on the unit type and options.

1.If the unit has no controls: power and ground are tucked inside of the handy box.

2.If the unit has a control interface or Tracer™ ZN controller: power and ground are inside the control box. If the unit has a control interface or a Tracer controller, the power wires and ground wire are inside the control box connected to a non fused disconnect switch.

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