McQuay MCK050A Especificaciones descargar pdf (Pagina 19)

Application Information MVCU-2009

Piping Connection to the Units

Align the center of the piping and tighten the ﬂ are nut sufﬁ ciently with ﬁ ngers.

Finally tighten the ﬂ are nut with torque wrench unit the wrench clicks.

When tightening the ﬂ 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

9.52 (3/8) 42

12.70 (1/2) 55

15.88 (5/8) 65

19.05 (3/4) 78

Indoor piping

Flare nut

Flared tube

Flare joint

Spanar

Torque wrench

Vacuuming and Charging

The pre-charged outdoor unit does not need any vacuuming or charging. However once it is connected, the

connecting pipe line and the indoor unit need to be vacuumed before releasing the R22/R407C/R410A 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 -0.1

MPa (-760mmHg) or lower. (Evacuation time varies by the pump but averagely in 1 hour).

Filter Dryer

(Mclecular-Sieve Type

Note : R22 - Nil

R410A - Nil

4. After evacuation, unscrew the spindle (diagram B) for the gas to run to indoor unit.

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McQuay MCK050A Especificaciones Pagina 19