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80 WSHP-SVX01D-EN
Operation Pressures
Water Pressure Drop
Tables 8 and 9 should be used to define feet of head/pressure drop. Please note the feet of pressure (ft/head) provided is at ARI/ISO stan-
dard. Note: To calculate feet of head, when using gauges that read in PSIG,multiply PSI by 2.31.
Table 8: Cooling water pressure drops (WPD) in feet of head
Unit Size
60 HZ
Unit Size
50 HZ
EWT
F
GPM
Ft.
Pressure
006 - 86 1.5 2.5
009 006 86 2.1 4.2
012 009 86 2.8 7.6
015 012 86 3.5 6.5
018 015 86 4.2 6.9
024 018 86 5.5 6.9
030 024 86 6.9 12.6
036 030 86 8.3 8.7
040 - 86 9.2 11.4
042 036 86 9.7 12.4
048 042 86 11.0 9.1
060 048 86 14.5 12.5
- 060 86 14.5 12.5
GEH 072 - 86 18.0 12.7
GEH 090 GEH 072 86 22.5 13.2
GEH 120 GEH 090 86 30.0 13.6
GEH 150 GEH 120 86 37.5 13.7
GEH 180 GEH 150 86 45.0 19.3
GEV 072 - 86 18.0 12.7
GEV 090 GEV 072 86 22.5 13.2
GEV 120 GEV 090 86 30.0 13.6
GEV 150 GEV 120 86 37.5 13.7
GEV 180 GEV 150 86 45.0 19.3
GEV 240 GEV 180 86 60.0 13.2
GEV 300 GEV 240 86 75.0 13.1
Water Volume
Table 10 is provided for use in calculating glycol requirements for the unit.
Table 10: Water volume
Unit Size
60 HZ
Unit Size
50 HZ
Water Side
Volume
Cubic In.
Water Side
Volume
Cubic Ft.
Water Side
Volume
Gallons
006-009 006 13.6 0.008 0.059
012 009 17.0 0.010 0.074
015-018 015 36.0 0.021 0.156
024 018 48.0 0.028 0.208
030 024 55.0 0.032 0.238
036 030 71.0 0.041 0.307
042 036 76.0 0.044 0.329
048 042 105.0 0.061 0.455
060 048, 060 171.0 0.099 0.740
072 - 181.0 0.105 0.783
090 072 214 0.125 0.927
120 090 390 0.227 1.690
150, 180 120, 150 508 0.296 2.201
240 180 779 0.453 3.374
300 240 1057 0.615 4.576
Table 9: Heating water pressure drops (WPD) in feet of head
Unit Size
60 HZ
Unit Size
50 HZ
EWT
F
GPM Ft. Pressure
006 - 68 1.5 2.7
009 006 68 2.1 4.7
012 009 68 2.8 8.3
015 012 68 3.5 7.2
018 015 68 4.2 7.6
024 018 68 5.5 8.1
030 024 68 6.9 14.5
036 030 68 8.3 9.9
040 - 68 9.2 12.5
042 036 68 9.7 14.0
048 042 68 11.0 9.7
060 048 68 18.0 14.2
- 060 68 14.5 13.5
GEH 072 - 68 18.0 14.4
GEH 090 GEH 072 68 22.5 16.9
GEH 120 GEH 090 68 30.0 15.5
GEH 150 GEH 120 68 37.5 16.4
GEH 180 GEH 150 68 45.0 19.3
GEV 072 - 86 18.0 12.7
GEV 090 GEV 072 86 22.5 13.2
GEV 120 GEV 090 86 30.0 13.6
GEV 150 GEV 120 86 37.5 13.7
GEV 180 GEV 150 86 45.0 19.3
GEV 240 GEV 180 86 60.0 13.2
GEV 300 GEV 240 86 18.0 12.7