RACK TO HEAT RECLAIM
Because of the variety of Heat Reclaim sys-
tems, refer to the instructions accompanying
the system to be installed at the site.
OFFSET AND EXPANSION LOOP
CONSTRUCTION
Sizing
STEP 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
⁄8 inch OD.
84 x 0.0169 = 1.4196 inches expansion.
STEP 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 figuring offset and expansion
loop sizes.
Example:
The smallest “Inches Expansion” equal to or
greater than 1.4196 is 1.5. The 1.5 column
intersects with the 1
3
⁄8 line at 21. Use “L”
value 21.
STEP 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
⁄8 line is
63 inches.
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 • Printed in USA
Revised August 1, 1996 P/N 340272A
3 - 7
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
⁄8
11 16 20 24 1
1
⁄8
11 17 21 26 1
3
⁄8
12 18 23 28 1
5
⁄8
14 20 25 31 1
1
⁄8
16 22 27 32 2
5
⁄8
18 24 30 34 3
1
⁄8
20 28 34 39 4
1
⁄8
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