LG ARUN048GSS4.EWGBLUS Manual de usuario descargar pdf (Pagina 14)

ENGLISH

Indoor Unit Connection

Indoor Unit connecting pipe from branch (a,b,c,d,e,f)

Indoor Unit capacity

[kW(Btu/h)]

Liquid pipe

[mm(inch)]

Gas pipe [mm(inch)]

≤ 5.6(19,100)

Ø6.35(1/4) Ø12.7(1/2)

< 16.0(54,600) Ø9.52(3/8) Ø15.88(5/8)

< 22.4(76,400) Ø9.52(3/8) Ø19.05(3/4)

< 28.0(95,900) Ø9.52(3/8) Ø22.2(7/8)

CAUTION

• Bending radius should be

at least twice the diameter

of the pipe.

• Bend pipe after

500mm(1.64ft) or more

from branch(or header).

Do not bend U type.

It may cause Performance

unsatisfactory or noise.

500mm(1.64ft)

or more

500mm(1.64ft)

or more

The amount of Refrigerant

The calculation of the additional charge should take into account the

length of pipe and CF(correction Factor) value of indoor unit.

Amount refrigerant of Indoor units

Example) 4Way Ceiling Cassette 14.5kW -1ea, Ceiling concealed

Duct 7.3kW-2ea, Wall Mounted 2.3kW-4ea

CF = 0.64 × 1 + 0.26 × 2 + 0.24 × 4 = 2.12kg(4.67lbs)

Attach the additional refrigerant table of IDU.

CAUTION

Do not connect Hydrokit with Multi V S Models.

WARNING

• Regulation for refrigerant leakage

: the amount of refrigerant leakage should satisfy the following

equation for human safety.

If the above equation can not be satisfied, then follow the follow-

ing steps.

• Selection of air conditioning system: select one of the next

- Installation of effective opening part

- Reconfirmation of Outdoor Unit capacity and piping length

- Reduction of the amount of refrigerant

- Installation of 2 or more security device (alarm for gas leakage)

• Change Indoor Unit type

installation position should be over 2m from the floor (Wall

mounted type ’ Cassette type)

• Adoption of ventilation system

: choose ordinary ventilation system or building ventilation sys-

tem

• Limitation in piping work

: Prepare for earthquake and thermal stress

Liquid pipe

Gas pipe

Ⓐ Manifold Gauge

Ⓑ Low pressure side Handle

WARNING

• Pipe to be vacuumed : gas pipe, liquid pipe

• If the refrigerant amount is not exact, it may not operate

properly.

• If additionally bottled refrigerant amount is over 10%, condenser

burst or insufficient indoor unit performance may be caused.

Volume of the room at which Indoor Unit of

the least capacity is installed

Total amount of refrigerant in the system

≤0.44kg/m

(0.028lbs/ft

)

Refrigerant charging

Additional charge(kg) = Total liquid pipe : Ø25.4 mm (1.0 inch) x

0.480 kg/m (0.323 lbs/ft)

+ Total liquid pipe : Ø22.2 mm (7/8 inch) x

0.354 kg/m (0.238 lbs/ft)

+ Total liquid pipe : Ø19.05 mm (3/4 inch) x

0.266 kg/m (0.179 lbs/ft)

+ Total liquid pipe : Ø15.88 mm (5/8 inch) x

0.173 kg/m (0.116 lbs/ft)

+ Total liquid pipe : Ø12.7 mm (1/2inch) x

0.118 kg/m (0.079 lbs/ft)

+ Total liquid pipe : Ø9.52 mm (3/8inch) x

0.061 kg/m (0.041 lbs/ft)

+ Total liquid pipe : Ø6.35 mm (1/4 inch) x

0.022 kg/m (0.015 lbs/ft)

+ CF value of indoor unit

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 28 29

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LG ARUN048GSS4.EWGBLUS Manual de usuario Pagina 14

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