MVHP168ME2CA User Manual

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22 31-5000572 Rev. 1

ENGLISH

INSTALLATION INSTRUCTIONS

Evacuation

Connect the vacuum pump at both liquid and suctions valves

Operation Procedure:

Leakage Test passed

Evacuation Begins

Evacuation Ends

Check Vacuum

Charge Refrigerant

After reaching 0.007psi or

less than 350 microns, let the

vacuum run continuously

Vacuum should

not rise above 500

microns

If the vacuum pointer rises, it shows there is water or leakage in the

system. Please check and modify it, then evacuate again.

IMPORTANT:

• To prevent the oil going into the pipe, please use the special tool for R410A, especially for gauge manifold and charging

hose.

• To prevent the oil from going into the refrigerant cycle, please use the anti-counter flow adapter.

• Release the refrigerant check valve during outdoor unit maintenance. Set the recovery dip switch when evacuating

system.

Tighten torque as the table below shows:

Stop Valve Diameter (in) Fastening Torque

(ft.lb)

Fastening Angle

( ° )

Recommended Tool

Length in(mm)

1/4 11-14 45~60 5.9 (150)

3/8 25-31 30~45 7.9 (200)

1/2 30-45 30~45 9.8 (250)

5/8 50-60 15~20 11.8 (300)

3/4 61.96 to 72.28 15~20 11.8 (300)

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Haier MVHP168ME2CA MRV-5 208-230V 14-Ton VRF Heat Pump System