LG Multi IV - Indoor Unit Y-Branches for ARUB Series Heat Recovery Units

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Refrigerant Piping Design & Layout Best Practices
Indoor Unit Y-branches for ARUB Series Heat Recovery Units
REFRIGERANT PIPING DESIGN
Models Low-Pressure Vapor Pipe High-Pressure Vapor Pipe Liquid pipe
ARBLB01621
ARBLB03321
ARBLB07121
ARBLB14521
I.D. 5/8
I.D. 5/8
I.D. 5/8
16-1/4
15-3/8
I.D. 3/4
I.D. 3/4
I.D. 3/4
I.D. 3/4
O.D. 5/8
I.D. 1/2
I.D. 5/8
I.D. 5/8
I.D. 5/8
I.D. 5/8
I.D. 5/8
I.D. 5/8
I.D. 1/2
I.D. 1/2
I.D. 1/2
I.D. 1/2
I.D. 1/2
I.D. 1/2
I.D. 1/2
I.D. 1/2
I.D. 1/2
I.D. 1/2
I.D. 1/2
I.D. 1/2
I.D. 1/2
I.D. 1/2
I.D. 1/2
I.D. 1/2
O.D. 1/2
O.D. 1/2
O.D. 1/2
O.D. 1/2
I.D 1/2
I.D. 1/2
O.D. 1/2
I.D. 1/2
I.D. 1/2
I.D. 1/2
I.D. 1/2
11-1/2
11-1/16
11-1/2
11-1/16
2-15/16
2-15/16
2-15/16
2-15/16
2-3/4
2-3/4
2-3/4
2-3/4
2-3/42-3/4
2-3/4
2-3/4
2-3/4
I.D. 5/8
I.D. 5/8
I.D. 1
I.D. 1
I.D. 1
I.D. 1
I.D. 1
O.D. 1
O.D. 1
I.D. 1
I.D. 1
I.D. 1
O.D. 1
3-3/16
4-3/8 4-3/8
4-3/8
4-3/84-3/8
4-3/8
4-3/8
13-1/16
12-5/8
18-9/16
20-3/8
4-15/16
14-5/8
15-1/2
3-5/16
3-5/16
5-1/8
I.D. 5/8
I.D. 1-5/8
I.D.
1-5/8
I.D. 1-5/8
I.D. 1-1/2
I.D. 1-1/2
I.D. 1-1/2
O.D. 1-1/2
O.D. 5/8
1
2
2
3
3
2
2
3
3
2
3
3
3
14-13/16
15-15/16
4-3/4 4-3/4
4-3/4
4-3/4
4-3/4
3-9/16
3-9/16
I.D. 5/8
I.D. 5/8
2
3
1
2
1 3
3
16-3/8
17-1/2
O.D. 5/8
I.D. 5/8
I.D. 3/4
I.D. 3/4
I.D. 3/4
I.D. 3/4
I.D. 3/4
I.D. 3/4
I.D. 3/4
I.D. 3/4
I.D. 3/4
I.D. 3/4
I.D. 3/4
I.D. 3/4
I.D. 5/8
I.D. 5/8
I.D. 3/4
I.D. 3/4
I.D. 3/4
O.D. 3/4
O.D. 3/4
O.D. 3/4
O.D. 3/4
O.D. 3/4
O.D. 3/4
O.D. 3/4
3-3/16
3-3/16
2
3
3
3
3
3
3 2
2
2
3 2
3
3
3
1
2
2
1
2 3 3
2
1 2
I.D. 5/8
14-11/16
13-13/16
O.D. 5/8
17-1/2
16-9/16
3-13/16
3-13/16
3-13/16
3-13/16
I.D.
5/8
I.D. 7/8
I.D. 7/8
I.D. 7/8
I.D. 7/8
I.D. 7/8
I.D. 7/8
I.D. 7/8
I.D. 7/8
I.D. 7/8
I.D. 7/8
I.D. 7/8
I.D. 7/8
I.D. 7/8
O.D. 7/8
O.D. 7/8
I.D. 7/8
I.D. 7/8
I.D. 7/8
I.D. 7/8
O.D. 5/8
I.D. 1/4
I.D. 1/4
I.D. 1/4
I.D. 1/4
I.D. 1/4
I.D. 1/4
I.D. 1/4
1
1
1
1
15
16-1/8
I.D. 5/8
I.D. 5/8
I.D. 5/8
17-7/8
19-3/8
4-3/8
I.D. 1-3/8
I.D. 1-3/8
I.D. 1-3/8
I.D. 1-3/8
I.D. 1-3/8
O.D. 1-3/8
I.D. 1-1/8
I.D. 1-1/8
I.D. 1-1/8
I.D. 1-1/8
I.D. 1-1/8
I.D. 1-1/8
I.D. 1-1/8
I.D. 1-1/8
I.D. 1-1/8
O.D. 1-1/8
I.D. 1-1/8
I.D. 1-1/4
O.D. 1-1/4
I.D. 1-1/4
I.D. 1-1/4
I.D. 1-1/4
I.D. 1-1/4
Unit: Inch
I.D. 3/8
I.D. 3/8
I.D. 3/8
I.D. 3/8
I.D. 3/4
I.D. 3/8
I.D. 3/8
I.D. 3/8
I.D. 3/8
I.D. 3/8
I.D. 3/8
I.D. 3/8
I.D. 3/8
I.D. 3/8
I.D. 3/8
I.D. 3/8
I.D. 3/8
O.D. 3/8
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