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DC Inverter Multi VRF System User Manual

Please keep the unit away from

inflammable, explosive and

corrosive gas or waste gas.

Make sure the location has space

for heat exchange and

maintenance so that unit can

operate reliably with good

ventilation.

ODU and IDU should stay as

close as possible to shorten the

length of refrigerant pipe and

reduce bend angles.

Select a location which is out of

children’s reach. Keep the unit

away from children.

If the ODU is totally surrounded by walls, please refer to the following figures for space

dimension:

Fig.2

3.3 Piping Work Requirements

Refer to the table below for piping work requirements:

R410A Refrigerant System

Outer diameter (mm/inch)

Wall thickness(mm)

Φ6.35(1/4)

≥0.8

Φ9.52(3/8)

≥0.8

Φ12.70(1/2)

≥0.8

Φ15.9(5/8)

≥1.0

Φ19.05(3/4)

≥1.0

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