McQuay M5HDC Spezifikationen PDF herunterladen (Seite 14)

M5HDC-2010

Application Information

Piping Connection To The Units

• Align the center of the piping and sufciently tighten the are nut with ngers.

• Finally, tighten the are nut with torque wrench until the wrench clicks.

• When tightening the are nut with torque wrench, ensure the direction for tightening

follows the arrow on the wrench.

Pipe Size (mm/in) Torque (nm)

6.35 (1/4) 18

9.53 (3/8) 42

15.88 (5/8) 65

Vacuuming and Charging

• The precharged outdoor unit does not need any vacuuming or charging. However once

it is connected, theconnecting pipe line and the indoor need to be vacuumed before

releasing refrigerant from the outdoor unit.

1) Open the service port core cap.

2) Connect pressure gauge to the service port.

3) Connect the line to vacuum pump. Open the charging manifold valve and turn the

pump on. Vacuum to -0.1MPa (-760mmHg) or lower. (Evacuation time varies by the

pump but averagely in 1 hour).

LO HI

CHARGE SET

OUTDOOR UNIT

VACUUM PUMP

INDOOR UNIT

Flare Joint

Flare Valve

Diagram 1

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McQuay M5HDC Spezifikationen Seite 14