Figure 21 Refrigerant Piping Diagram; Table 25 Equivalent Lengths (Feet) For Various Pipe Fittings - Emerson Liebert Challenger 3000 Installation Manual

Table 25 Equivalent lengths (feet) for various pipe fittings
Copper Pipe
OD in.
1/2
5/8
3/4
7/8
1-1/8
1-3/8
1-5/8
Refrigerant trap = 4 times equivalent length of pipe per this table

Figure 21 Refrigerant piping diagram

Evaporator
Suction Line Piping
Condensing unit
below evaporator
Evaporator
90 Degree 90 Degree
Elbow Copper Elbow Cast
0.8 1.3
0.9 1.4
1.0 1.5
1.45 1.8
1.85 2.2
2.4 2.9
2.9 3.5
45 Degree
Elbow Tee
0.4 2.5
0.5 2.5
0.6 2.5
0.8 3.6
1.0 4.6
1.3 6.4
1.6 7.2
Pitch down 1/2" (13mm) per 10 ft. (3m)
NOTE
When installing remote condensing units below the
evaporator, the suction gas line should be trapped with
an inverted trap to the height of the evaporator. This
prevents refrigerant migration to the compressors
during off cycles. Maximum recommended vertical
drop to condensing unit is 15 ft. (4.6m).
Condensing unit
Condensing unit
Suction Line Piping
Condensing unit
above evaporator
Traps recommended at the base of riser and
every 25 feet (7.6m) of vertical rise.
45
Split System Models
Gate Globe Angle
Valve Valve Valve
0.26 7.0 4.0
0.28 9.5 5.0
0.3 12.0 6.5
0.36 17.2 9.5
0.48 22.5 12.0
0.65 32.0 16.0
0.72 36.0 19.5