92
Chapter 5
Table 5-5: R-134a Refrigerant Line Sizes for Remote Systems Commercial Refrigeration
Cond. Unit
CAPACITY
(BTU/Hr.)
SUCTION LINE SIZES
AT SYSTEMS EVAPORATOR DESIGN TEMPERATURE
Liquid Line
Size
-40°F
-20°F
0°F
+20°F
+40°F
1200
5/8
1/2
3/8
3/8
3/8
1/4
2400
3/4
5/8
1/2
1/2
3/8
1/4
3600
7/8
3/4
5/8
1/2
1/2
1/4
4800
1 1/8
7/8
3/4
5/8
1/2
1/4
6000
1 1/8
7/8
3/4
5/8
1/2
1/4
7200
1 3/8
1 1/8
7/8
3/4
5/8
1/4
8400
1 3/8
1 1/8
7/8
3/4
5/8
3/8
9600
1 5/8
1 1/8
7/8
3/4
5/8
3/8
10800
1 5/8
1 3/8
1 1/8
7/8
3/4
3/8
12000
1 5/8
1 3/8
1 1/8
7/8
3/4
3/8
18000
2 1/8
1 5/8
1 3/8
1 1/8
7/8
3/8
24000
2 5/8
2 1/8
1 3/8
1 3/8
1 1/8
1/2
36000
3 1/8
2 1/8
2 1/8
1 3/8
1 1/8
1/2
48000
3 5/8
2 5/8
2 1/8
1 5/8
1 3/8
1/2
60000
3 5/8
3 1/8
2 5/8
2 1/8
1 5/8
1/2
72000
4 1/8
3 1/8
2 5/8
2 1/8
1 5/8
1/2