HUSSM ANN CORPORATION • BRIDGETON, M O 63044-2483 • Printed in USA
COMPONENT PIPING
September 1, 1997
3 - 6
RACK TO HEAT RECLAIM
Because of the variety of Heat Reclaim systems,
refer to the instructions accompanying the system
to be installed at the site.
OFFSET AND EXPANSION LOOP
CONSTRUCTION
Sizing
S
TEP
1
For low temperature application multiply the
length of the run in feet by 0
.
0169.
For medium temperature application multiply the
length of the run in feet by 0
.
0112.
The product will be inches of linear expansion for
the length of run.
Example:
A low temperature application with a run of 84
feet of 1
3
¼
8
inch OD.
84
x
0
.
0169 = 1.4196 inches expansion.
S
TEP
2
Select the smallest “Inches Expansion” figure
equal to or greater than the product in step one
from Table 3-1. Follow that column down until it
intersects the OD line size of the run. The number
listed at the intersection is the “L” value for figur-
ing offset and expansion loop sizes.
Example:
The smallest “Inches Expansion” equal to or
greater than 1.4196 is 1.5. The 1.5 column inter-
sects with the 1
3
¼
8
line at 21. Use “L” value 21.
S
TEP
3
For an offset, multiply the “L” value by 3 to
determine the length of the offset.
Example:
An “L” value of 21 would mean
3L = 3
x
21 or
3L = 63.
The offset distance required for low temperature
application for an 84 foot run of 1
3
¼
8
line is
63 inches.
Table 3-1 “L” Values for Figuring
Offsets and Expansion Loops
Inches Expansion
Line Size
0.5
1.0
1.5
2.0
OD
10
15
19
22
7
¼
8
11
16
20
24
1
1
¼
8
11
17
21
26
1
3
¼
8
12
18
23
28
1
5
¼
8
14
20
25
31
1
1
¼
8
16
22
27
32
2
5
¼
8
18
24
30
34
3
1
¼
8
20
28
34
39
4
1
¼
8
3L
Figure 3-9 — Offset Construction
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