LG MU2R17.UL0 User Manual download pdf (Page 13)

INSTALLATION OF INDOOR, OUTDOOR UNIT

ENGLISH

Piping length and elevation

Multiple Piping Models (Unit: m)

Phase Capacity(kBtu/h) Total Length Max Length(A/B)

Max Elevation

(h1)

In - In Elevation

(h2)

1Ø

14/16 30 20 15 7.5

18 50 25 15 7.5

21 50 25 15 7.5

24/27 70 25 15 7.5

30 75 25 15 7.5

40 85 25 15 7.5

Multiple Piping Type

Capacity is based on standard length and

maximum allowance length is on the

basis of reliability. If outdoor unit is at

higher elevation than the indoor units,

after 24m of vertical height, 1 oil trap is

required.

CAUTION

Refrigerant charge

The calculation of the additional charge should be taken in account for the length of extra pipe.

Multiple Piping Models (Unit: m)

• Multiple Piping Models

Additional charge (g) = ((A Room Installation Length – Standard Length ) x 20g/m

+ (B Room Installation Length – Standard Length ) x 20g/m +.. )

- CF(Correction Factor) x 150

h CF = Max. number of connectable indoor unit – Total number of connected indoor unit

Phase

Capacity

(kBtu/h)

Standard

Length(m)

Max Piping for

one room(m)

Max total Piping

Length

Chargeless

Length

Additional

Charge(g/m)

1Ø

14/16 7.5 20 30 20 20

18 7.5 25 50 22.5 20

21 7.5 25 50 22.5 20

24/27 7.5 25 70 30 20

30 7.5 25 75 37.5 20

40 7.5 25 85 37.5 20

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LG MU2R17.UL0 User Manual Page 13

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