37
Refrigerant Piping Connections
Due to our policy of continuous product innovation, some specifications may change without notification.
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REFRIGERANT PIPING CONNECTIONS
Headers
• 7KHODUJHVWFDSDFLW\LQGRRUXQLWPXVWEHLQVWDOOHGFORVHVWWRWKH0XOWL96RXWGRRUXQLW
• Install the Header in a horizontal plane.
• If the diameter of the refrigerant piping is different from the Header port size, trim to the desired section using a pipe cutter.
• When the number of pipes to be connected is less than the number of available header branches, install a cap to the unused ports.
• Headers should be insulated with the clam-shell jacket included in each kit.
Branch Pipe Fittings
Capped Pipe
Horizontal Plane
Viewed from this point
in the direction of the arrow.
Unit: Inch
4 branch
ARBL054
7 branch
ARBL057
4 branch
ARBL104
7 branch
ARBL107
Models Vapor pipe Liquid pipe
14-3/16
21-1/4
21-1/4
4-3/4
I.D. 5/8
I.D. 1/2
I.D. 1/2
I.D. 5/8
I.D. 5/8
I.D. 3/4
4-3/4
14-3/16
I.D. 3/8
I.D. 3/8
I.D. 1/4
I.D. 1/4
I.D. 3/8
I.D. 1/2
5-15/16
5-15/16
5-15/16
5-15/16
5-15/16
15-3/4
6-5/16
I.D. 5/8
I.D. 1/2
I.D. 3/4
I.D. 5/8
I.D 7/8
I.D. 1-1/8
I.D. 1
4-3/4
4-3/4
4-3/4
4-3/4
4-3/4
4-3/4
4-3/4
4-3/4
I.D. 5/8
I.D. 1/2
I.D. 5/8
I.D. 1/2
I.D. 5/8
I.D. 3/4
4-3/4
I.D. 1/4
I.D. 3/8
I.D. 3/8
I.D. 1/2
6-5/16
22-7/8
I.D. 3/4
I.D. 5/8
ID15.88(5/8)
ID12.7(1/2)
I.D. 5/8
I.D. 1/2
I.D. 7/8
I.D. 1-1/8
I.D. 1
27-9/16
4-3/4
I.D. 1/4
I.D. 3/8
I.D. 3/8
I.D. 1/4
I.D. 3/8I.D. 1/2
5-15/16
5-15/16
5-15/16
4-3/4
4-3/4
14-3/16
I.D. 3/8
I.D. 3/8
I.D. 1/4
I.D. 1/4
I.D. 3/8
I.D. 1/2
Table 26: 0XOWL96+HDGHUV
Figure 37: Header Installation.
B
Pipe Cutter
T
o
Space unit
T
o
indoor unit
A
B
Figure 38: Capping Unused Ports and Horizontal Plane.
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