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Remote Condensing Unit Installation Instructions
©2019 Tecumseh Compressor Company LLC. All rights reserved. TPC Part #71511 | Rev A 05/13/2019www.tecumseh.com
TABLE 6A – Recommended Line Sizes for R-407*
(Continued)
Capacity
BTUH
Suction Line Size Liquid Line Size
Suction Temperature
Receiver to Expansion Valve
Equivalent Lengths
-10 °F Equivalent Lengths -20 °F Equivalent Lengths -30 °F Equivalent Lengths -40 °F Equivalent Lengths
25’ 50’ 100’ 150’ 25’ 50’ 100’ 150’ 25’ 50’ 100’ 150’ 25’ 50’ 100’ 150’ 25’ 50’ 100’ 150’
1,000 3/8 3/8 1/2 1/2 3/8 1/2 1/2 1/2 3/8 1/2 1/2 5/B 3/8 5/8 5/8 5/8 3/8 3/8 3/8 3/8
3,000 1/2 1/2 5/8 5/8 1/2 5/8 7/8 7/8 5/8 5/8 7/8 7/8 5/8 5/8 7/8 7/8 3/8 3/8 3/8 3/8
4,000 1/2 5/8 7/8 7/8 5/8 7/8 7/8 7/8 5/8 7/8 7/8 7/8 5/8 7/8 7/8 1-1/8 3/8 3/8 3/8 3/8
6,000 5/8 5/8 7/8 7/8 5/8 5/8 7/8 1-1/8 7/8 7/8 1-1/8 1 1/8 7/8 7/8 1-1/8 1-1/8 3/8 3/8 3/8 3/8
9,000 5/8 7/8 7/8 1-1/8 7/8 7/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 3/8 3/8 3/8 3/8
12,000 7/8 7/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-1/8 1-3/8 1-5/8 3/8 3/8 3/8 3/8
15,000 7/8 1-1/8 1-1/8 1-1/8 7/8 1-1/8 1-3/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-3/8 1-5/8 1-5/8 3/8 3/8 3/8 3/8
18,000 7/8 1-1/8 1-1/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-1/8 1-3/8 1-5/8 1-5/8 3/8 3/8 3/8 1/2
24,000 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 2-1/8 2-1/8 3/8 3/8 1/2 1/2
30,000 1-1/8 1-1/8 1-3/8 1-5/8 1-1/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 2-1/8 1-3/8 1-5/8 2-1/8 2-1/8 3/8 1/2 1/2 1/2
36,000 1-1/8 1-3/8 1-3/8 1-5/8 1-3/8 1-3/8 1-5/8 2-1/8 1-3/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 3/8 1/2 1/2 5/8
42,000 1-3/8 1-3/8 1-5/8 2-1/8 1-3/8 1-5/8 2-1/8 2-1/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-5/8 3/8 1/2 1/2 5/8
48,000 1-3/8 1-5/8 1-5/8 2-1/8 1-3/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-5/8 1/2 1/2 5/8 5/8
54,000 1-3/8 1-5/8 2-1/8 2-1/8 1-3/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 1/2 1/2 5/8 5/8
60,000 1-3/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 1/2 1/2 5/8 5/8
66,000 1-3/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-518 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 1/2 1/2 5/8 5/8
72,000 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 3-1/8 1/2 5/8 5/8 5/8
78,000 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 3-1/8 1/2 5/8 5/8 7/8
84,000 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 3-1/8 1/2 5/8 5/8 7/8
90,000 1-5/8 2-1/8 2-1/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/6 2-1/8 2-5/8 2-5/8 2-1/8 2-5/8 3-1/8 3-1/8 1/2 5/8 7/8 7/8
120,000
2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-1/8 2-5/8 3-1/8 2-1/8 2-5/8 3-1/8 3-1/8 2-5/8 2-5/8 3-1/8 3-5/8 5/8 5/8 7/8 7/8
*NOTES:
1. Sizes that are highlighted indicate maximum suction line sizes that should be used for risers. Riser size should not exceed horizontal size.
2. All sizes shown are for O.D. Type ”L“ copper tubing.
3. Suction line sizes selected at pressure drop equivalent to 2°F. Reduce estimate of system capacity accordingly.