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M5HDC-2010

Wiring

Wiring Electrical Connections

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

LOCAL ELECTRICAL CODES for eld 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.

• The unit must be GROUNDED to prevent possible hazards due to insulation failures.

• All wiring must be rmly connected.

• All wiring must not touch the hot refrigerant piping, compressor or any moving parts of

fan motors.

Refrigerant Piping

Maximum Pipe Length And Maximum Number Of Bends

• When the pipe length becomes too long, both the capacity and reliability drop.

As the number of bends increases, system piping resistance to the refrigerant ow

increases, thus lowering the cooling capacity, and as the result the compressor may

become defective. Always choose the shortest path and follow the recommendation as

tabulated below:

Model

Data

Max. Length, L

15 m 15 m

Max. Elevation, H

8 m 8 m

Max. No. of Bends

10 10

M5HDC020AR M5HDC025AR

Piping Sizes (Flare Connection Type)

• Piping sizes are as follows:

Model M5HDC020AR M5HDC025AR

Liquid (mm/in) 6.35 (1/4) 9.52 (3/8)

Suction (mm/in) 15.88 (5/8) 15.88 (5/8)

Application Information

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McQuay M5HDC Spezifikationen Seite 13