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Model
GPM
3
4
GZ024
6
4.5
GZ036
6
9
6
8
GZ048
12
7.5
GZ060
10
15
9
12
GZ072
18
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 80°F d.b./67°F w.b. entering air temperature in cooling, 70°F d.b. entering air temperature in
heating. Heating data at entering fluid temperatures below 50°F assumes the use of antifreeze. As a result of continuing research and development, specifica-
tions are subject to change without notice.
Table 13 – Water Side Pressure Drop PSIG
30ºF
40ºF
50ºF
0.8
0.8
0.8
1.4
1.3
1.3
2.9
2.8
2.6
1.6
1.5
1.4
2.7
2.6
2.4
5.5
5.3
4.8
1.3
1.3
1.1
2.2
2.1
1.9
4.5
4.4
4.0
1.4
1.3
1.2
2.3
2.2
2.0
4.8
4.7
4.2
1.0
1.0
0.9
1.7
1.7
1.5
3.6
3.5
3.2
Pressure Drop (PSI)
60ºF
70ºF
80ºF
0.7
0.7
0.7
1.3
1.2
1.2
2.6
2.5
2.4
1.3
1.3
1.2
2.2
2.2
2.1
4.6
4.5
4.4
1.1
1.1
1.1
1.8
1.8
1.7
3.8
3.7
3.6
1.2
1.1
1.1
2.0
1.9
1.8
4.1
3.9
3.8
0.9
0.9
0.8
1.5
1.4
1.4
3.1
3.0
2.9
24
90ºF
100ºF
110ºF
0.7
0.6
0.6
1.1
1.0
1.0
2.3
2.2
2.1
1.2
1.2
1.1
2.0
2.0
1.9
4.2
4.1
4.0
1.0
1.0
0.9
1.7
1.6
1.6
3.5
3.4
3.3
1.1
1.0
1.0
1.8
1.7
1.7
3.7
3.6
3.5
0.8
0.8
0.8
1.3
1.3
1.3
2.8
2.7
2.6
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Troubleshooting
