Trane Axiom GECE 006, Installation, Operation And Maintenance Manual

Page: 29 / 40

Start-Up
WSHP-SVX11E-EN 29
Water Pressure Drop
Table 5, p. 29 and Table 6, p. 29 should be used to define
feet of head/pressure drop. Please note the feet of
pressure (ft/head) provided is at AHRI/ISO standard.
Note: To calculate feet of head, when using gauges that
read in PSIG, multiply PSI by 2.31.
Table 5. Cooling water pressure drops (WPD) in feet of
head for GEC* units - 0.5 to 1.5 tons
Unit Size
(60 Hz)
Unit Size
(50 Hz) EWT °F GPM
Ft.
Pressure
006 — 86 1.8 3.6
009 006 86 2.1 4.3
012 009 86 2.8 9.3
015 012 86 3.5 13.1
018 015 86 4.2 9.1
Table 6. Heating water pressure drops (WPD) in feet of
head for GEC* units - 0.5 to 1.5 tons
Unit Size
(60 Hz)
Unit Size
(50 Hz) EWT °F GPM
Ft.
Pressure
006 — 68 1.8 4.3
009 006 68 2.1 5.0
012 009 68 2.8 10.7
015 012 68 3.5 14.9
018 015 68 4.2 10.2
GEC*018 (60 Hz)
GEC*015 (50 Hz)
35° 3.4 — — — — 92-106 274-349 9-12 21-26
GEC*018 (60 Hz)
GEC*015 (50 Hz)
35° 4.2 — — — — 92-106 274-349 7-9 21-27
GEC*018 (60 Hz)
GEC*015 (50 Hz)
45° 3.4 141-162 178-226 11-14 23-29 108-124 288-367 10-13 24-30
GEC*018 (60 Hz)
GEC*015 (50 Hz)
45° 4.2 141-162 172-219 9-11 23-29 110-127 289-368 8-11 24-31
GEC*018 (60 Hz)
GEC*015 (50 Hz)
55° 3.4 141-163 206-262 11-14 23-29 126-145 302-385 11-14 27-34
GEC*018 (60 Hz)
GEC*015 (50 Hz)
55° 4.2 141-162 200-254 9-11 23-29 129-148 305-388 9-12 27-35
GEC*018 (60 Hz)
GEC*015 (50 Hz)
68° 3.4 143-164 249-317 11-14 22-28 152-175 325-413 13-16 31-39
GEC*018 (60 Hz)
GEC*015 (50 Hz)
68° 4.2 143-164 242-308 9-11 22-28 156-180 326-415 10-13 32-40
GEC*018 (60 Hz)
GEC*015 (50 Hz)
75° 3.4 143-165 275-350 11-14 21-27 169-194 336-428 13-17 33-42
GEC*018 (60 Hz)
GEC*015 (50 Hz)
75° 4.2 143-165 267-340 9-11 21-27 173-199 339-432 11-14 34-43
GEC*018 (60 Hz)
GEC*015 (50 Hz)
86° 3.4 145-167 320-407 11-14 20-26 196-225 357-454 15-19 36-46
GEC*018 (60 Hz)
GEC*015 (50 Hz)
86° 4.2 145-167 312-397 9-11 20-26 202-232 360-458 12-15 37-47
GEC*018 (60 Hz)
GEC*015 (50 Hz)
95° 3.4 146-168 362-461 11-14 19-24 — — — —
GEC*018 (60 Hz)
GEC*015 (50 Hz)
95° 4.2 146-168 353-450 9-11 19-25 — — — —
Table 4. Operating pressures in cooling/heating for GEC* units (continued)
Operating Data
Model GEC*
Entering
Water
Temp
(°F)
Water
Flow
(GPM)
Cooling Heating
Suction
Pressure,
(psig)
Discharge
Pressure,
(psig)
Water
Temp
Rise
(°F)
Air Temp
Drop
(°F DB)
Suction
Pressure
(psig)
Discharge
Pressure
(psig)
Water
Temp
Drop
(°F)
Air Temp
Rise
(°F DB)