McQuay MMST Especificaciones descargar pdf (Pagina 35)

Electrical Connections

Wiring regulations on wire diameters differ from country to country. Please refer to your LOCAL ELECTRICAL

CODES for field wiring rules. Be sure that installation comply with such rules and regulations.

General Precautions

Ensure that the rated voltage of the unit corresponds to the name plate before carrying out proper wiring

according to the wiring diagram.

Provide a power outlet to be used exclusively for each unit. A power supply disconnect and a circuit breaker for

over current protection should be provided in the exclusive line.

All wiring must be firmly connected.

All wiring must not touch the refrigerant piping, compressor or any moving parts of fan motors.

Operational Check

After all wiring is completed and the system is charged with refrigerant, make sure that unit is operating prop-

erly. Check that :

• Condenser fan is running, with warm air blowing off the condensing unit.

• Evaporator blowers are running and discharging cool air.

• The micro-computer system incorporate a 3-minute delay in the circuitry. Thus, it requires about 3 minutes

upon cut off before the outdoor condensing unit can start up.

• To check if there is any miswiring, turn on one unit at a time.

• After running for 10-15 minutes. Check if the suction (low side) pressure is within normal operating range.

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McQuay MMST Especificaciones Pagina 35