IOM 1242-2 • PATHFINDER
®
MODEL AWV CHILLERS 30 www.DaikinApplied.com
InsTallaTIon and applICaTIon ConsIderaTIons - remoTe evaporaTors
Table 7: Sizing Guidelines for Horizontal or Downow Suction Lines and Liquid Lines
NOTE: Target suction temperature loss less than 2.5°F.
Minimum suction line gas velocity target 1000 FPM
on horizontal and downow piping installations where
the evaporator is at or below the chiller elevation.
Maximum allowable suction line temperature loss
target 5°F; some selections are greater than 5°F
due to minimum velocity requirements at minimum
compressor speed.
Recommended Horizontal or Downow Sucon Line Size
Nominal
Circuit
Capacity
Esmated Line
TEL () Line Material
Sucon Line
Size (Inches)
65 250 Copper 4 1/8
90 250 Copper 4 1/8
115 250 Copper 4 1/8
140 250 Copper 5 1/8
165 250 Copper 5 1/8
190 250 Copper 6 1/8
215 250 Copper 6 1/8
240 250 Copper 6 1/8
265 250 Copper 6 1/8
65 275 Copper 4 1/8
90 275 Copper 4 1/8
115 275 Copper 4 1/8
140 275 Copper 5 1/8
165 275 Copper 5 1/8
190 275 Copper 6 1/8
215 275 Copper 6 1/8
240 275 Copper 6 1/8
265 275 Copper 6 1/8
65 300 Copper 4 1/8
90 300 Copper 4 1/8
115 300 Copper 4 1/8
140 300 Copper 5 1/8
165 300 Copper 5 1/8
190 300 Copper 6 1/8
215 300 Copper 6 1/8
240 300 Copper 6 1/8
265 300 Copper 6 1/8
Recommended Liquid Line Sizes
Nominal
Circuit
Capacity
Esmated Line
TEL () Line Material
Liquid Line Size
(Inches)
65 250 Copper 2 1/8
90 250 Copper 2 1/8
115 250 Copper 2 1/8
140 250 Copper 2 5/8
165 250 Copper 2 5/8
190 250 Copper 2 5/8
215 250 Copper 2 5/8
240 250 Copper 3 1/8
265 250 Copper 3 1/8
65 275 Copper 2 1/8
90 275 Copper 2 1/8
115 275 Copper 2 1/8
140 275 Copper 2 5/8
165 275 Copper 2 5/8
190 275 Copper 2 5/8
215 275 Copper 3 1/8
240 275 Copper 3 1/8
265 275 Copper 3 1/8
65 300 Copper 2 1/8
90 300 Copper 2 1/8
115 300 Copper 2 1/8
140 300 Copper 2 5/8
165 300 Copper 2 5/8
190 300 Copper 2 5/8
215 300 Copper 3 1/8
240 300 Copper 3 1/8
265 300 Copper 3 1/8