Daikin AWV008, Installation, Operation And Maintenance Manual

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MODEL AWV CHILLERS
Table 8: Alternate Sizing Guidelines for Horizontal or
Downflow Suction Lines - Steel
NOTE: FOR STEEL LINES ONLY
Target suction temperature loss less than 2.5°F.
Maximum allowable suction line temperature loss target 5°F.
Only recommended on applications that require ≥6”
diameter suction lines as an alternate for copper.
For use in horizontal and down flow applications only where
the evaporator is at or below the chiller elevation.
Recommend schedule 40 steel pipe.
Carbon steel pipe shall be ASTM Standard A 53 Grade B,
Type E (electric resistance welded) or Type S (seamless); or
ASTM Standard A 106 Grade B (seamless). Standard A 53
Type F is not permitted.
Refrigeration piping design and fabrication should be in
accordance with the applicable sections of ASME B31.5 -
Refrigeration Piping and Heat Transfer Components for the
steel piping.
Table 9: Sizing Guidelines for Upflow Lines
NOTE: Target suction temperature loss less than 2.5°F.
Minimum suction line gas velocity target 1500 FPM
on vertical upflow suction line piping risers.
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 Downflow Suction Line Size
Nominal Circuit
Capacity
Estimated Line
TEL (ft) Line Material
Suction Line
Size (Inches)
240 100 Steel 6
265 100 Steel 6
215 125 Steel 6
240 125 Steel 6
265 125 Steel 6
190 150 Steel 6
215 150 Steel 6
240 150 Steel 6
265 150 Steel 6
190 175 Steel 6
215 175 Steel 6
240 175 Steel 6
265 175 Steel 6
190 200 Steel 6
215 200 Steel 6
240 200 Steel 6
265 200 Steel 6
190 225 Steel 6
215 225 Steel 6
240 225 Steel 6
265 225 Steel 6
190 250 Steel 6
215 250 Steel 6
240 250 Steel 6
265 250 Steel 6
190 275 Steel 6
215 275 Steel 6
240 275 Steel 6
265 275 Steel 6
190 300 Steel 6
215 300 Steel 6
240 300 Steel 6
265 300 Steel 6
Recommended Upflow Suction Line Size
Nominal Circuit
Capacity Line Material
Suction Line
Size (Inches)
Estimated Line
TEL (ft)
65 Copper 3 5/8 50
90 Copper 3 5/8 50
115 Copper 3 5/8 50
140 Copper 4 1/8 50
165 Copper 4 1/8 50
190 Copper 5 1/8 50
215 Copper 5 1/8 50
240 Copper 5 1/8 50
265 Copper 5 1/8 50
65 Copper 3 5/8 75
90 Copper 3 5/8 75
115 Copper 3 5/8 75
140 Copper 4 1/8 75
165 Copper 4 1/8 75
190 Copper 5 1/8 75
215 Copper 5 1/8 75
240 Copper 5 1/8 75
265 Copper 5 1/8 75