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29
Operating Temperatures and Pressures
COOLING
HEATING
Model
Entering
Water
Temp. °F
Water
Flow
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Water
Temp
Rise °F
Air
Temp
Drop °F
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Water
Temp
Drop
Air
Temp
Rise °F
GZ072
Part
Load
30°
9.0
71-87
259-316
5-7
19-23
18.0
76-92
264-322
4-5
20-25
40°
9.0
116-141
175-213
18-22
19-23
84-102
280-342
7-8
22-26
18.0
113-137
164-199
12-14
20-24
89-108
286-349
5-6
23-28
50°
9.0
119-145
209-255
17-21
19-23
96-117
302-368
8-9
24-29
18.0
115-140
196-239
12-14
19-24
102-124
308-376
6-7
25-31
60°
9.0
121-148
244-297
17-21
18-23
109-132
324-395
9-11
26-32
18.0
118-143
228-278
11-14
19-23
116-141
330-403
7-8
28-34
70°
9.0
124-151
278-339
17-21
18-22
121-148
345-421
10-12
29-35
18.0
120-146
260-317
11-14
19-23
129-157
352-430
8-9
30-37
80°
9.0
126-154
312-381
16-20
18-22
134-163
367-447
11-14
31-38
18.0
123-149
292-356
11-13
19-23
142-173
374-457
8-10
33-40
90°
9.0
129-157
347-423
16-20
18-22
146-178
388-474
12-15
33-41
18.0
125-152
324-395
11-13
18-22
155-189
396-483
9-11
35-43
100°
9.0
131-160
381-465
16-19
17-21
18.0
128-155
356-435
11-13
18-22
GZ072
Full
Load
30°
9.0
71-87
259-316
5-7
19-23
18.0
76-92
264-322
4-5
20-25
40°
9.0
120-146
185-225
15-19
21-26
84-102
280-342
7-8
22-26
18.0
117-142
173-211
11-14
22-27
89-108
286-349
5-6
23-28
50°
9.0
123-150
218-266
15-18
20-25
96-117
302-368
8-9
24-29
18.0
120-146
204-249
11-14
21-26
102-124
308-376
6-7
25-31
60°
9.0
126-153
251-307
14-17
20-24
109-132
324-395
9-11
26-32
18.0
122-149
235-287
11-13
21-25
116-141
330-403
7-8
28-34
70°
9.0
129-157
285-347
14-17
19-24
121-148
345-421
10-12
29-35
18.0
125-152
266-325
10-13
20-25
129-157
352-430
8-9
30-37
80°
9.0
132-160
318-388
13-16
19-23
134-163
367-447
11-14
31-38
18.0
128-156
297-363
10-12
19-24
142-173
374-457
8-10
33-40
90°
9.0
135-164
351-429
13-16
18-22
146-178
388-474
12-15
33-41
18.0
131-159
329-401
10-12
19-23
155-189
396-483
9-11
35-43
100°
9.0
137-167
385-469
12-15
17-21
18.0
134-163
360-439
9-11
18-22
This chart shows approximate temperatures and pressures for a unit in good repair. The values shown are meant as
a guide only and should not be used to estimate system charge. This chart assumes rated air flow and 80º d.b./67º
w.b. entering air temperature in cooling, 70º d.b. entering air temperature in heating. Heating data at entering fluid
temperatures below 50º assumes the use of antifreeze. As a result of continuing research and development,
specifications are subject to change without notice.