Mueller E-Star OESE 3.5 and 5 HP HFC Condensing Unit
Installation and Operation Manual, Part No. 8828747
Effective April 13, 2020
TABLE 2: LIQUID LINE SIZING
Paul Mueller Company recommends the shortest pipe run possible.
TABLE 3: SUCTION LINE SIZING
Paul Mueller Company recommends the shortest pipe run possible.
TABLE 4: DISCHARGE LINE SIZING TO AND FROM THE FRE-HEATER®
Paul Mueller Company recommends the shortest pipe run possible.
TABLE 5: CONDENSING UNIT CONNECTION SIZES
4
Compressor
Horsepower
Equivalent Length of Pipe (Feet)
< 30ˇ
30ˇ – 50ˇ
50ˇ – 100ˇ
3.5
1
⁄
2
1
⁄
2
1
⁄
2
5
1
⁄
2
1
⁄
2
5
⁄
8
7.5
5
⁄
8
5
⁄
8
5
⁄
8
9
5
⁄
8
5
⁄
8
7
⁄
8
Compressor
Horsepower
Equivalent Length of Pipe (Feet)
< 30ˇ
30ˇ – 50ˇ
50ˇ – 100ˇ
3.5
7
⁄
8
1
1
⁄
8
1
1
⁄
8
5
1
1
⁄
8
1
1
⁄
8
1
3
⁄
8
7.5
1
1
⁄
8
1
3
⁄
8
1
5
⁄
8
9
1
3
⁄
8
1
5
⁄
8
2
1
⁄
8
Compressor
Horsepower
Equivalent Length
of Pipe (Feet)
0ˇ – 50ˇ
3.5
7
⁄
8
5
7
⁄
8
7.5
1
1
⁄
8
9
1
1
⁄
8
Compressor
Horsepower
Liquid Line
Suction Line
Discharge Line
(Fre-Heater®)
3.5
1
⁄
2
7
⁄
8
1
⁄
2
5
5
⁄
8
7
⁄
8
1
⁄
2
7.5
5
⁄
8
1
5
⁄
8
1
1
⁄
8
9
5
⁄
8
1
5
⁄
8
1
1
⁄
8
