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Water Flow Rate (GPM)
Rise
(Clg)
Drop
(Htg)
For Closed Loop: Ground Source or
9 - 12
4 - 8
Cooler/Boiler systems at 3 gpm/ton
For Open Loop: Ground Water systems
20 - 26
10 - 17
at 1.5 gpm/ton
Table 17. Water Temperature Change Through Heat
Exchanger
NOTE: To obtain maximum performance the air coil
should be cleaned before start-up. A 10 percent
solution of dishwasher detergent and water is
Table 18. Water Pressure Drop Table
Table 19. Unit operating pressures and temperatures
Cooling** - without HWG active
Heating - without HWG active
E n t e r i n g
W a t e r
S u c t i o n
D i s c h a r g e
W a t e r
Air
S u c t i o n
D i s c h a r g e
W a t e r
Air
W a t e r
Flow
P r e s s u r e
P r e s s u r e S u p e r -
S u b -
Temp
T e m p *
P r e s s u r e P r e s s u r e
S u p e r -
S u b -
Temp
T e m p *
Temp °F
G P M / t o n
P S I G
P S I G
h e a t
cooling Rise °F Drop °F DB
P S I G
P S I G
h e a t
cooling
Drop °F DB
Rise °F
1.5
75-85
90-105
25-40
12-20
21-24
21-26
34-39
167-186
12-16
1-4
7.6-8.4
14-20
3 0
2.3
74-84
80-95
25-40
11-18
13-16
21-26
37-43
172-191
12-16
1-4
4.8-5.6
16-22
3.0
73-83
70-85
25-40
10-16
6-11
21-26
40-46
177-196
12-16
1-4
3.4-4.2
16-22
1.5
75-85
125-155
12-20
10-18
20-23
20-25
50-60
180-210
10-17
1-5
10.8-11.9
23-29
5 0
2.3
74-84
120-142
12-20
9-16
12-15
20-25
53-62
185-215
10-17
1-5
6.7-8.1
24-30
3.0
73-83
115-138
12-20
8-14
8-12
20-25
55-65
190-220
10-17
1-5
5.1-5.9
25-31
1.5
75-85
179-198
9-16
8-15
19-22
19-24
71-82
205-230
14-19
1-5
14.0-15.2
28-34
7 0
2.3
74-84
168-186
9-16
8-14
12-17
19-24
73-85
210-238
14-19
1-5
9.0-10.2
30-37
3.0
73-83
158-175
9-16
8-12
7-12
19-24
76-88
215-242
14-19
1-5
6.7-7.9
31-38
1.5
75-85
229-251
9-17
8-15
18-21
17-23
85-95
220-260
18-28
2-5
14.4-16.6
32-39
9 0
2.3
74-84
218-241
9-17
8-14
10-14
17-23
90-100
225-265
18-28
2-5
10.8-12.4
33-41
3.0
73-83
208-230
9-17
8-12
6-11
17-23
95-105
230-270
18-28
2-5
7.2-8.3
35-42
1.5
77-87
280-320
8-15
10-25
17-20
15-20
1 1 0
2.3
76-86
270-310
8-15
10-24
9-13
15-20
3.0
75-85
260-300
8-15
10-22
5-10
15-20
HWG should be disabled for accurate chart comparison
*Based on Nominal 400 cfm per ton airflow and 70°F EAT htg and 80/67°F EAT cooling
**Cooling air and water numbers can vary greatly with changes in humidity
Subcooling is based upon the head pressure at compressor service port
Paradigm
G P M
Pressure Drop (psi)
Model
30°F
50°F
70°F
90°F
2
0.6
0.6
0.5
0.5
018
4
1.6
1.4
1.3
1.3
5
2.1
2.0
1.8
1.7
6
2.8
2.6
2.4
2.3
3
0.6
0.6
0.5
0.5
024
5
1.3
1.2
1.1
1.1
6
1.8
1.7
1.5
1.4
8
2.9
2.7
2.5
2.3
4
0.9
0.9
0.8
0.8
030
6
1.8
1.7
1.5
1.4
8
2.9
2.7
2.5
2.3
10
4.2
3.9
3.6
3.4
5
1.6
1.4
1.3
1.3
036
7
2.6
2.4
2.3
2.1
9
3.9
3.7
3.4
3.2
12
6.4
5.9
5.5
5.2
6
2.1
1.9
1.8
1.7
042
8
3.2
3.0
2.8
2.6
11
5.5
5.1
4.7
4.5
13
7.3
6.8
6.3
5.9
6
2.1
1.9
1.8
1.7
048
9
3.9
3.7
3.4
3.2
12
6.4
5.9
5.5
5.2
15
9.4
8.7
8.1
7.6
8
1.2
1.2
1.1
1.0
060
11
2.1
2.0
1.8
1.7
15
3.6
3.4
3.1
2.9
18
5.0
4.7
4.3
4.1
