Unit installation

July 2008 Application Note 1003

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1. All MSY/MSZ indoor units must be powered from the outdoor unit.

(Indoor unit cannot be powered from a separate source)

2. Outdoor unit power is 208/230 VAC using a two-conductor wire with ground.

3. Indoor unit power is supplied from the outdoor unit from a terminal block marked S1, S2, S3.

4. Connect the indoor unit to the outdoor unit on terminals S1, S2, S3 and ground. Use copper

conductors only.

5. A three-pole disconnect switch may be used for shut off or service between the indoor and

outdoor unit as shown in Figure 1.

Figure 1. 3 pole switch part # TAZ-MS303

Note: All wiring shall comply with NEC and local electrical codes.

Refer to unit installation manual for more details.

CONNECTING WIRES AND CONNECTING GROUND WIRE

 Use a solid conductor or stranded conductor AWG14.

 Use doubled insulated copper wire with 300 volt

insulation.

 Use copper conductors only.

 Follow national and local electrical code.

POWER SUPPLY CABLE AND GROUND WIRE

 Use solid or stranded conductor AWG12** or AWG14

wire.

 Use copper conductors only.

 Follow national and local electrical code.

Due to continuing improvement, above specification may be subject to change without notice.

2013 P-Series and M-Series - Application Notes (June 2013)

APP-7