22
Single Zone High Efficiency W
all Mounted Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL INSTALLATION GUIDELINES
See table below for precalculated anticipated expansion for various pipe sizes and lengths of refrigerant tubing.
To find the anticipated expansion value:
1. From the table below, find the row corresponding with the actual feet of the straight pipe segment.
2. Estimate the minimum and maximum temperature of the pipe.
3. In the column showing the minimum pipe temperature, look up the anticipated expansion distance corresponding to the segment length.
Do the same for the maximum pipe temperature.
4. Calculate the difference in the two expansion distance values. The result will be the change in pipe length.
Pipe
Length
1
Fluid Temperature °F
35° 40° 45° 50° 55° 60° 65° 70° 75° 80° 85° 90° 95° 100° 105° 110° 115° 120° 125° 130°
10
0.04 0.04 0.05 0.06 0.06 0.07 0.08 0.08 0.09 0.09 0.10 0.10 0.11 0.11 0.11 0.12 0.13 0.14 0.15 0.15
20
0.08 0.08 0.10 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.20 0.21 0.22 0.22 0.23 0.26 0.28 0.29 0.30
30
0.12 0.12 0.15 0.18 0.20 0.21 0.23 0.24 0.26 0.27 0.29 0.30 0.32 0.33 0.32 0.35 0.39 0.42 0.44 0.45
40
0.16 0.16 0.20 0.24 0.26 0.28 0.30 0.32 0.34 0.36 0.38 0.40 0.42 0.44 0.43 0.46 0.52 0.56 0.58 0.60
50
0.20 0.20 0.25 0.30 0.33 0.35 0.38 0.40 0.43 0.45 0.48 0.50 0.53 0.55 0.54 0.58 0.65 0.70 0.73 0.75
60
0.24 0.24 0.30 0.36 0.39 0.42 0.45 0.48 0.51 0.54 0.57 0.60 0.63 0.66 0.65 0.69 0.78 0.84 0.87 0.90
Table 9: Linear Thermal Expansion of Copper Tubing in Inches
1
Pipe length baseline temperature = 0°F. "Expansion of Carbon, Copper and Stainless Steel Pipe,"
The Engineers' Toolbox
, www.engineeringtoolbox.com.
Piping Materials and Handling
Figure 24: Coiled Expansion Loops and Offsets
Large Tubing U-bend (>3/4 in.)
Loop
Small Tubing U-bend (<3/4 in.)
R
L
R
L
L
Anticipated Linear
Expansion (LE) (inches)
Nominal Tube Size (OD) inches
1/4
3/8
1/2
3/4
1/2
R
1
6
7
8
9
L
2
38
44
50
59
1
R
1
9
10
11
13
L
2
54
63
70
83
1-1/2
R
1
11
12
14
16
L
2
66
77
86
101
2
R
1
12
14
16
19
L
2
77
89
99
117
2-1/2
R
1
14
16
18
21
L
2
86
99
111
131
3
R
1
15
17
19
23
L
2
94
109
122
143
3-1/2
R
1
16
19
21
25
L
2
102
117
131
155
4
R
1
17
20
22
26
L
2
109
126
140
166
Table 10: Radii of Coiled Expansion Loops and Developed Lengths of Expansion Offsets
