I n s t a l l a t i o n , O p e r a t i o n , M a i n t e n a n c e
53
JE-Series
I s s u e D a t e :
M a y 1 0 , 2 0 2 1
T H E S M A R T S O L U T I O N F O R E N E R G Y E F F I C I E N C Y
Unit Operating Conditions, Cont’d.
Table 9: Water Temperature Change Through Heat Exchanger
Water Flow, gpm [l/m]
Rise, Cooling
°F, [°C]
Drop, Heating
°F, [°C]
For Closed Loop: Ground Source or Closed Loop
Systems at 3 gpm per ton [3.2 l/m per kW]
9 - 12
[5 - 6.7]
4 - 8
[2.2 - 4.4]
For Open Loop: Ground Water
Systems at 1.5 gpm per ton [1.6 l/m per kW]
20 - 26
[11.1 - 14.4]
10 - 17
[5.6 - 9.4]
JE064
Full Load Cooling - without HWG active
Full Load Heating - without HWG active
Entering
Water
Temp °F
Water
Flow
GPM/ton
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat Subcooling
Water
Temp
Rise °F
Air Temp
Drop °F
DB
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat Subcooling
Water
Temp
Drop °F
Air
Temp
Rise °F
DB
30*
1.5
2.25
3
66-76
69-79
72-82
282-302
285-305
289-309
10-16
10-16
10-16
9-14
9-14
10-15
8-10
6-8
4-6
19-25
19-25
20-26
50
1.5
2.25
3
128-138
126-136
125-135
238-258
222-242
205-225
16-21
21-26
26-31
14-19
13-18
12-17
20.5-22.5
14.9-16.9
9.2-11.2
21-27
21-27
21-27
90-100
95-105
99-109
310-330
313-333
316-336
11-17
11-17
11-17
12-17
12-17
12-17
11.3-13.3
8.5-10.5
5.7-7.7
24-30
25-31
26-32
70
1.5
2.25
3
135-145
134-144
133-143
315-335
296-316
276-296
10-15
12-17
15-20
14-19
13-18
11-16
21-23
15.5-17.5
10-12
22-28
22-28
22-28
115-125
120-130
126-136
337-357
341-361
345-365
12-18
12-18
12-18
14-19
14-19
15-20
14-16
10.6-12.6
7.3-9.3
28-35
29-36
30-37
90
1.5
2.25
3
139-149
138-148
138-148
408-428
386-406
364-384
10-15
10-15
10-15
15-20
13-18
11-16
20.1-22.1
14.8-16.8
9.5-11.5
21-27
21-27
21-27
157-167
161-171
166-176
390-410
394-414
398-418
15-20
15-20
15-20
14-19
14-19
15-20
18.2-20.2
13.9-15.9
9.6-11.6
37-45
38-46
39-47
110
1.5
2.25
3
144-154
143-153
142-152
515-535
493-513
469-489
8-13
8-13
8-13
14-19
13-18
12-17
19-21
14-16
9-11
20-26
20-26
20-26
*Based on 15% Methanol antifreeze solution
JE072
Full Load Cooling - without HWG active
Full Load Heating - without HWG active
Entering
Water
Temp °F
Water
Flow
GPM/ton
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat Subcooling
Water
Temp
Rise °F
Air Temp
Drop °F
DB
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Superheat Subcooling
Water
Temp
Drop °F
Air
Temp
Rise °F
DB
30*
1.5
2.25
3
61-71
65-75
68-78
292-312
296-316
300-320
11-16
11-16
10-15
13-18
14-19
15-20
7.2-9.2
5.4-7.4
3.5-5.5
19-25
20-26
21-27
50
1.5
2.25
3
131-141
130-140
129-139
210-230
205-225
200-220
10-15
11-16
13-18
12-17
12-17
12-17
18.5-20.5
14-16
9.5-11.5
22-28
23-29
24-30
89-99
98-108
106-116
327-347
337-357
348-368
10-15
10-15
10-15
19-24
14-19
9-14
10.9-12.9
8.3-10.3
5.7-7.7
26-32
28-34
30-36
70
1.5
2.25
3
135-145
131-141
128-138
300-320
295-315
290-310
10-15
11-16
13-18
15-20
14-19
14-19
17.6-19.6
13.8-15.8
10-12
23-29
23-29
23-29
119-129
132-142
144-154
365-385
380-400
395-415
10-15
10-15
10-15
21-26
16-21
11-16
14.7-16.7
11.3-13.3
7.9-9.9
33-39
36-42
38-44
90
1.5
2.25
3
139-149
137-147
135-145
390-410
370-390
350-370
10-15
10-15
10-15
16-21
14-19
13-18
16.7-18.7
12.6-14.6
8.5-10.5
22-28
22-28
22-28
162-172
172-182
182-192
418-438
430-450
444-464
10-15
10-15
11-16
19-24
19-24
19-24
19.4-21.4
14.7-16.7
10.1-12.1
43-49
45-51
47-53
110
1.5
2.25
3
145-155
145-155
144-154
490-510
470-490
452-472
10-15
10-15
9-14
16-21
14-19
13-18
15.9-17.9
11.7-13.7
7.4-9
20-27
20-27
20-27
*Based on 15% Methanol antifreeze solution
Table 8, cont’d.: JE Series Typical Unit Operating Pressures and Temperatures (60Hz – I-P Units)
