Technical Data Manual

Design of 3WAY VRF SYSTEM
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1. Model Selecting and Capacity Calculator
Gas tubing size (in.(mm))
1/2"
(12.7)
5/8"
(15.88)
3/4"
(19.05)
1-1/8"
(28.58)
1-3/8"
(34.92)
1-5/8"
(41.28)
90° elbow
1 1.1 1.4 1.9 2.5 2.8
45° elbow
0.8 0.9 1
1.4
1.8 2.0
U-shape tube bent
(R2–23/64–3–15/16 in.)
3 3.4 4.1 5.6 7.4 8.4
T r ap bend
7.5 9.2 10.5 15.4
7/8"
(22.22)
1.6
1.2
4.7
12.5 19.2 22.3
Y-branch distr ibution joint Equivalent length conversion not needed.
Ball v alve f or ser vice 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.
TD831158-02_3WAY_VRF_SYS.indb 9TD831158-02_3WAY_VRF_SYS.indb 9 2013/06/18 11:46:332013/06/18 11:46:33