Emerson Liebert SRC18 - Figure 5-7 Coiled Expansion Loops and Offsets; In-Line Refrigeration Components; Pipe Bends; Table 5-8 Radii of Coiled Expansion Loops and Developed Lengths of Expansion Offsets

Piping
Liebert
®
SRC
™
User Manual 44
Figure 5-7 Coiled expansion loops and offsets
5.2.7 Pipe Bends
When bending soft copper, use long-radius bends. Refer to Table 5-8 for minimum radius specifications.
5.2.8 In-line Refrigeration Components
Liebert SRC systems are provided with redundant systems that assure oil is properly returned to the
compressor. Sight glasses and solenoid valves may cause vapor to form in the liquid stream.
Table 5-8 Radii of coiled expansion loops and developed lengths of expansion offsets
Anticipated Linear
Expansion (LE)
(in.)
Nominal Tube Size (OD) in.
1/4 3/8 1/2 3/4
1/2
R
1
6789
L
2
38 44 50 59
1
R
1
9101113
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
NOTE
Components such as oil traps, solenoid valves, filter-dryers, sight glasses, tee
fittings, and other after-market accessories are not permitted on the
refrigerant-piping system between the outdoor unit and the indoor unit.
NOTE
Over time, dryers may deteriorate and introduce debris into the system. The
designer and installer should verify that the refrigerant-piping system is free of
traps, sagging pipes, sight glasses, filter dryers, etc.
Large Tubing U-bend (>3/4 in.) Loop Small Tubing U-bend (<3/4 in.)
R
L
R
L
L