2
2
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Design of 3-WAY FLOW LOGIC
■
Indoor Unit Tubing Connection (
1
~
40
)
Unit: mm
1. Model Selecting and Capacity Calculator
■
Required Copper Tubing Dimensions
Unit: mm
Material
0
Copper tubing
Outer diameter
6.35
9.52
12.70
15.88
19.05
22.22
Wall thickness
0.8
0.8
0.8
1.0
1.15
1.0
Material
1/2 H, H
Copper tubing
Outer diameter
25.4
28.58
31.75
38.1
Wall thickness
1.0
1.0
1.1
1.15
41.28
1.20
●
Refrigerant tubing (Design pressure capability: 3.3 MPa)
Tubing size (mm)
Material O
Material 1/2H • H
φ
6.35
t0.8
φ
25.40
t1.0
φ
9.52
t0.8
φ
28.58
t1.0
φ
12.7
t0.8
φ
31.75
t1.1
φ
15.88
t1.0
φ
38.10
t1.15
φ
19.05
t1.0
φ
41.28
t1.20
φ
22.22
t1.15
* When bending the tubes, use a bending radius that is at least 4 times the outer diameter of the tubes.
In addition, take sufficient care to avoid crushing or damaging the tubes when bending them.
(mm)
ø15.88
ø22.22
ø22.22
ø15.88
ø15.88
ø19.05
ø19.05
ø19.05
ø9.52
ø9.52
ø9.52
ø9.52
ø9.52
ø9.52
ø6.35
ø12.7
ø12.7
Total system horsepower
Suction tubing
(mm)
Discharge tubing
Indoor unit type
7
9
12
18
25
36
48
54
76
*1
96
*1
Liquid tubing (mm)
Wide tubing (mm)
Narrow tubing (mm)
0.8
1.3
1
2
3
4
5
6
8
10
Distribution
joint –
solenoid valve
kit tubing
Solenoid valve
kit – Indoor
unit tubing
connection
*1: For the solenoid valve kits, use type 160 with parallel specifications. Branch the tubing before and after the solenoid valve kits.
■
Amount of Refrigerant Charge
Narrow tubing size
Amount of refrigerant
charge/m (g/m)
φ
6.35
26
φ
9.52
56
φ
12.7
128
φ
15.88
185
φ
19.05
259
φ
22.22
366
* When bending the tubes, use a bend-
ing radius that is at least 4 times the
outer diameter of the tubes.
In addition, take sufficient care to avoid
crushing or damaging the tubes when
bending them.
04-218 Airwell-2.qxp 01/06/2007 13:15 Page 7