LG Multi V Water V ARWM072CAS5 Engineering Manual page 20

Variable refrigerant flow water source outdoor units

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Service manual (157 pages)

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ACCESSORIES

Headers

Headers for Heat Pump and Heat Recovery Configuration

Models

Vapor pipe

14-3/16

4-3/4

I.D. 1/2

4 branch

I.D. 1/2

I.D. 5/8

ARBL054

I.D. 5/8

I.D. 3/4

21-1/4

7 branch

I.D. 1/2

ARBL057

I.D. 5/8

15-3/4

6-5/16

I.D. 5/8

4 branch

I.D. 1/2

I.D. 3/4

ARBL104

I.D. 5/8

I.D. 1

I.D. 1-1/8

22-7/8

6-5/16

7 branch

ID12.7(1/2)

I.D. 1/2

I.D. 3/4

ARBL107

ID15.88(5/8)

I.D. 5/8

I.D. 1-1/8

29-7/8

6-5/16

10 branch

I.D. 1/2

ARBL1010

I.D. 3/4

I.D. 5/8

I.D. 1-1/8

I.D. 1

30-9/16

7-3/16

10 branch

I.D. 1/2

ARBL2010

I.D. 3/4

I.D. 5/8

I.D. 1-1/4

I.D. 1-3/8

38 | WSU PRODUCT DATA

Unit: Inch

Liquid pipe

14-3/16

4-3/4

I.D. 1/4

I.D. 3/8

5-15/16

I.D. 3/8

4-3/4

I.D. 3/8

I.D. 5/8

I.D. 1/2

21-1/4

4-3/4

I.D. 1/2

I.D. 1/4

I.D. 3/8

I.D. 5/8

5-15/16

4-3/4

I.D. 3/4

I.D. 3/8

I.D. 5/8

I.D. 1/2

14-3/16

4-3/4

I.D. 1/4

I.D. 3/8

5-15/16

4-3/4

I.D. 3/8

I.D 7/8

I.D. 1/2

27-9/16

4-3/4

I.D. 5/8

I.D. 1/4

I.D. 3/8

4-3/4

5-15/16

I.D. 3/8

4-3/4

I.D. 1/2

I.D. 3/8

I.D. 1

I.D. 7/8

28-3/8

4-3/4

I.D. 5/8

I.D. 1/4

5-15/16

4-3/4

I.D. 3/8

4-3/4

I.D. 3/8

I.D. 7/8

I.D. 1/2

27-9/16

4-1/4

21-1/2

I.D. 5/8

I.D. 1/4

5-15/16

4-3/4

I.D. 3/8

4-3/4

I.D. 3/8

I.D. 3/4

I.D. 1-1/8

I.D. 5/8

• LG headers serve as central connections for multiple runout pipe segments

terminating at indoor units.

• Headers must be used with LG systems and be properly installed following the

instructions in the applicable LG manual. Field-supplied headers are not permitted.

• Kit components must be kept free of debris and dry before installation.

• All Header Kits include:

- Insulation jacket (one each for vapor and liquid pipes)

- Plugging tubes / Insulation for plugging tubes (see Table 26).

Table 7: Nominal Capacity Range.

Model

ARBL054 (4 branch)

5-15/16

ARBL057 (7 branch)

ARBL1010 (10 branch)

ARBL104 (4 branch)

ARBL107 (7 branch)

ARBL2010 (10 branch)

Table 8: Plugging Tubes and Plugging Tube Insulation Amounts.

Header Kits

ARBL054 (4 port)

5-15/16

ARBL057 (7 port)

ARBL1010 (10 port)

ARBL104 (4 port)

ARBL107 (7 port)

ARBL2010 (10 port)

Table 9: Insulation Jacket Properties.

5-15/16

Material

UL94 Flame Classification

Density

Thermal Conductivity

Thickness

Table 10: Fitting Properties.

5-15/16

Material

Design Pressure

Fitting Capacity

≤72,000 connected capacity

≤75,100 connected capacity

≤172,200 connected capacity

≤305,200 connected capacity

≤534,000 connected capacity

≤560,000 connected capacity

Plugging Tubes (in OD)

Insulation for Plugging Tubes

1/4

1/2

5/8

—

Polyolefin Foam

HF-1

1.84 lbs./ft.

.0208 Btu/h/ft. ºF

1/2 inch

Copper

550 psig

ACCESSORIES

Headers

Figure 7: Header.

Port Capacity

≤54,300 per port

≤76,300 per port

<76,300 per port

≤76,300 per port

—

WSU PRODUCT DATA | 39

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LG Multi V Water V ARWM072CAS5 Engineering Manual page 20

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