Copper Pipe
OD, in.
90 Degree
Elbow Copper
90 Degree
Elbow Cast
45 Degree
Elbow
Tee
Gate
Valve
Globe
Valve
Angle
Valve
1/2
0.8 (0.24)
1.3 (0.39)
0.4 (0.12)
2.5 (0.76)
0.26 (0.07)
7.0 (2.13)
4.0 (1.21)
5/8
0.9 (0.27)
1.4 (0.42)
0.5 (0.15)
2.5 (0.76)
0.28 (0.08)
9.5 (2.89)
5.0 (1.52)
3/4
1.0 (0.3)
1.5 (0.45)
0.6 (0.18)
2.5 (0.76)
0.3 (0.09)
12.0 (3.65)
6.5 (1.98)
7/8
1.45 (0.44)
1.8 (0.54)
0.8 (0.24)
3.6 (1.09)
0.36 (0.1)
17.2 (5.24)
9.5 (2.89)
1-1/8
1.85 (0.56)
2.2 (0.67)
1.0 (0.3)
4.6 (1.4)
0.48 (0.14)
22.5 (6.85)
12.0 (3.65)
1-3/8
2.4 (0.73)
2.9 (0.88)
1.3 (0.39)
6.4 (1.95)
0.65 (0.19)
32.0 (9.75)
16.0 (4.87)
1-5/8
2.9 (0.88)
3.5 (1.06)
1.6 (0.48)
7.2 (2.19)
0.72 (0.21)
36.0 (10.97)
19.5 (5.94)
Refrigerant trap = Four times equivalent length of pipe per this table
Table 2.6 Equivalent lengths for various pipe fittings, ft (m)
2.5.2 Pre-Charged Line Sets
Liebert® pre-charged line sets are available in 15 ft. (4.5m) and 30 ft. (9m) lengths (see Table 2.7 below).
NOTICE
Risk of improper handling and installation of pre-charged lines. Can cause kinks and similar damage to
lines.
Care must be taken to prevent kinking the pre-charged lines for 1-ton and 3.5-ton units.
Use tube benders and make all bends before making connections to either end of the pre-charged pipes.
Coil any excess tubing in a horizontal plane with the slope of the tubing toward the condensing unit. Use a
soft, flexible material to pack around the tubes when sealing openings in walls to prevent tube damage
and to reduce vibration transmission.
Line Size,
in.
Length,
ft. (m)
Charge R-407C,
lb-oz (kg)
3/8 liquid
15 (4.5)
0-5 (0.14)
30 (9)
0-10 (0.28)
5/8 or 7/8
suction
15 (4.5)
0-5 (0.14)
30 (9)
0-10 (0.28)
Table 2.7 Refrigerant charge in Liebert pre-charged R-407C line sets
2.5.3 Field-Fabricated Line Sets
All field-fabricated refrigeration piping should be copper piping, brazed using a brazing alloy with a
minimum temperature of 1350°F (732°C), such as Sil-Fos. Use a flow of dry nitrogen through the piping
during brazing to prevent formation of copper oxide scale inside the piping. Avoid soft solders such as
50/50 or 95/5.
Use the sweat adapter kits to terminate the piping at each unit end. Consult factory representatives to
obtain the proper sweat adapter kit.
Liebert® PFH unit charge levels and coupling size
has PFH unit connection sizes. Use
on page 19 for recommended line
sizes.
Vertiv
| Liebert PFH Installer/User Guide |
17
Summary of Contents for PFH020A-L
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