Panasonic U-72MF1U9E Guía de usuario descargar pdf (Pagina 23)

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)

7/8"

(22.22)

(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 r ap bend

7.5 9.2 10.5 12.5 14.1 15.4 19.2

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.

TD831158-00_3WAY_VRF_SYS.indb 9TD831158-00_3WAY_VRF_SYS.indb 9 2012/01/23 17:30:122012/01/23 17:30:12

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 117 118

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Panasonic U-72MF1U9E Guía de usuario Pagina 23