31
RECOMMENDED LINE SIZING FOR AIR COOLED SPLIT SYSTEMS
UP TO 200 EQUIVALENT FEET
HOT GAS LINES
SINGLE CIRCUIT SYSTEMS DUAL CIRCUIT SYSTEMS
Unit Tons per EQUIVALENT FEET Unit Tons per EQUIVALENT FEET
Tonnage Circuit 50 100 150 200 Tonnage Circuit 50 100 150 200
1 1 5/8 5/8 5/8 7/8 6 3 7/8 7/8 7/8 7/8
1.5 1.5 5/8 5/8 7/8 7/8 8 4 7/8 7/8 7/8 1-1/8
2 2 5/8 7/8 7/8 7/8 10 5 7/8 1-1/8 1-1/8 1-1/8
2.5 2.5 5/8 7/8 7/8 7/8 13 6.5 7/8 1-1/8 1-1/8 1-1/8
3 3 7/8 7/8 7/8 7/8 16 8 1-1/8 1-1/8 1-3/8 1-3/8
4 4 7/8 7/8 7/8 1-1/8 20 10 1-1/8 1-1/8 1-3/8 1-3/8
5 5 7/8 1-1/8 1-1/8 1-1/8 26 13 1-1/8 1-3/8 1-3/8 1-3/8
6 6 7/8 1-1/8 1-1/8 1-1/8 30 15 1-3/8 1-3/8 1-3/8 1-5/8
8 8 1-1/8 1-1/8 1-3/8 1-3/8
10 10 1-1/8 1-1/8 1-3/8 1-3/8
13 13 1-1/8 1-3/8 1-3/8 1-3/8
LIQUID LINES
SINGLE CIRCUIT SYSTEMS DUAL CIRCUIT SYSTEMS
Unit Tons per EQUIVALENT FEET Unit Tons per EQUIVALENT FEET
Tonnage Circuit 50 100 150 200 Tonnage Circuit 50 100 150 200
1 1 3/8 3/8 3/8 3/8 6 3 1/2 1/2 1/2 1/2
1.5 1.5 3/8 3/8 3/8 3/8 8 4 1/2 5/8 5/8 5/8
2 2 3/8 1/2 1/2 1/2 10 5 1/2 5/8 5/8 5/8
2.5 2.5 3/8 1/2 1/2 1/2 13 6.5 1/2 5/8 5/8 5/8
3 3 1/2 1/2 1/2 1/2 16 8 5/8 7/8 7/8 7/8
4 4 1/2 5/8 5/8 5/8 20 10 5/8 7/8 7/8 7/8
5 5 1/2 5/8 5/8 5/8 26 13 7/8 7/8 7/8 7/8
6 6 1/2 5/8 5/8 5/8 30 15 7/8 7/8 7/8 7/8
8 8 5/8 7/8 7/8 7/8
10 10 5/8 7/8 7/8 7/8
13 13 7/8 7/8 7/8 7/8
SUCTION LINES
SINGLE CIRCUIT SYSTEMS
Unit Tons per EQUIVALENT FEET
Tonnage Circuit 50 100 150 200
HOR VER HOR VER HOR VER HOR VER HOR = HORIZONTAL
1 1 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8
1.5 1.5 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 VERT = VERTICAL
2 2 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 7/8
2.5 2.5 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 7/8
3 3 7/8 7/8 1-1/8 7/8 1-1/8 7/8 1-1/8 7/8
4 4 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8
5 5 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-3/8 1-1/8
6 6 1-1/8 1-1/8 1-3/8 1-1/8 1-3/8 1-1/8 1-5/8 1-3/8
8 8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-5/8 1-3/8
10 10 1-3/8 1-3/8 1-5/8 1-3/8 1-5/8 1-5/8 1-5/8 1-5/8
13 13 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 1-5/8 2-1/8 1-5/8
DUAL CIRCUIT SYSTEMS
Unit Tons per EQUIVALENT FEET
Tonnage Circuit 50 100 150 200
HOR VER HOR VER HOR VER HOR VER
6 3 7/8 7/8 1-1/8 7/8 1-1/8 7/8 1-1/8 7/8
8 4 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8
10 5 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-3/8 1-1/8
13 6.5 1-1/8 1-1/8 1-3/8 1-1/8 1-3/8 1-1/8 1-5/8 1-3/8
16 8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-5/8 1-3/8
20 10 1-3/8 1-3/8 1-5/8 1-3/8 1-5/8 1-5/8 1-5/8 1-5/8
26 13 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 1-5/8 2-1/8 1-5/8
30 15 1-5/8 1-3/8 1-5/8 1-5/8 2-1/8 1-5/8 2-1/8 1-5/8