Panasonic WU-144MF1U9E Technical and Service Data - Page 23

Straight Equivalent Length of Joints

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1. Model Selecting and Capacity Calculator Design of 3WAY VRF SYSTEM 1-6. Straight Equivalent Length of Joints Design the tubing system by referring to the following table for the straight equivalent length of joints. Table 2-8 Straight Equivalent Length of Joints Gas tubing size (in.(mm)) 1/2" 5/8" 3/4" (12.7) (15.88) (19.05) 7/8" (22.22) 1" (25.4) 1-1/8" (28.58) Unit: ft. 1-3/8" (38.1) 90° elbow 1 1.1 1.4 1.6 1.7 1.9 2.5 45° elbow U-shape tube bent (R2-23/64-3-15/16 in.) Trap bend 0.8 0.9 1 1.2 1.3 1.4 1.8 3 3.4 4.1 4.7 5.1 5.6 7.4 7.5 9.2 10.5 12.5 14.1 15.4 19.2 Y-branch distribution joint Equivalent length conversion not needed. Ball valve for service Equivalent length conversion not needed. 1 2 3 4 5 6 7 8 2 - 9

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Design of 3WAY VRF SYSTEM
2
- 9
1
2
3
4
5
6
7
8
1. Model Selecting and Capacity Calculator
Gas tubing size (in.(mm))
1/2"
(12.7)
5/8"
(15.88)
3/4"
(19.05)
7/8"
(22.22)
1"
(25.4)
1-1/8"
(28.58)
1-3/8"
(38.1)
90
°
elbow
1
1.1
1.4
1.6
1.7
1.9
2.5
45
°
elbow
0.8
0.9
1
1.2
1.3
1.4
1.8
U-shape tube bent
(R2–23/64–3–15/16 in.)
3
3.4
4.1
4.7
5.1
5.6
7.4
T
rap bend
7.5
9.2
10.5
12.5
14.1
15.4
19.2
Y-branch distribution joint
Equivalent length conversion not needed.
Ball valve for service
Equivalent length conversion not needed.
1-6. Straight Equivalent Length of Joints
Design the tubing system by referring to the following table for the straight equivalent length of joints.
Table 2-8
Straight Equivalent Length of Joints
Unit: ft.