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