JOHNSON CONTROLS
36
FORM 150.73-NM1
ISSUE DATE: 09/04/2020
SECTION 4 – INSTALLATION
TABLE 1 - FITTING EQUIVALENT LENGTHS
*COPPER FITTING EQUIVALENT LENGTHS
LINE SIZE O.D. SHORT-RADIUS ELL LONG-RADIUS ELL
3/4 in. (19 mm) 6.5 ft. (2 m) 4.5 ft. (1.4 m)
7/8 in. (22 mm) 7.8 ft. (2.4 m) 5.3 ft. (1.6 m)
1-1/8 in. (29 mm) 2.7 ft. (.8 m) 1.9 ft. (0.6 m)
1-3/8 in. (35 mm) 3.2 ft. (1 m) 2.2 ft. (0.7 m)
1-5/8 in. (41 mm) 3.8 ft. (1.2 m) 2.6 ft. (0.8 m)
2-1/8 in. (54 mm) 5.2 ft. (1.6 m) 3.4 ft. (1.0 m)
2-5/8 in. (67 mm) 6.5 ft. (20 m) 4.2 ft. (1.3 m)
TABLE 2 - REFRIGERANT PIPING CHARGES
R410A SUCT AT 36 DEG LIQ AT 105 DEG
SUCTION LINES
SIZE ID CU FT DENSITY LB/CU FT OZ/FT GRAMS/30 CM
1-3/8 in. (35 mm) 1.3 0.0 2.1 0.3 8.1
1-5/8 in. (41 mm) 1.5 0.0 2.1 0.4 11.5
2-1/8 in. (54 mm) 2.0 0.0 2.1 0.7 20.0
2-5/8 in. (67 mm) 2.5 0.0 2.1 1.1 30.9
LIQUID LINES
3/4 in. (19 mm) 0.7 0.0 60.9 2.4 66.8
7/8 in. (22 mm) 0.8 0.0 60.9 3.3 92.8
1-1/8 in. (29 mm) 1.0 0.0 60.9 5.6 158.3
1-3/8 in. (35 mm) 1.3 0.0 60.9 8.5 241.1
TABLE 3 - MISCELLANEOUS LIQUID LINE PRESSURE DROPS
*MISCELLANEOUS LIQUID LINE PRESSURE
SOLENOID VALVE 2 to 3 psi (13.8 to 20.7 kPa)
FILTER/DRIER 2 to 3 psi (13.8 to 20.7 kPa)
SIGHT GLASS 0.5 psi (3.4 kPa)
* Pressure drops or equivalent length values are approximate. If more precise value is desired, consult ASHRAE Refrigerant Handbook.
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