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GENERAL PERFORMANCE DATA
Table 37.1 - Air Temperature Rise jkl
Btu/Hr
Btu/Hr
Model Size
Input j
Output j
75
75,000
60,750
100
100,000
81,000
125
125,000
101,250
150
150,000
121,500
175
175,000
141,750
200
200,000
162,000
225
225,000
182,250
250
250,000
202,500
300
300,000
243,000
350
350,000
283,500
400
400,000
324,000
500
500,000
405,000
600
600,000
486,000
700
700,000
567,000
800
800,000
648,000
840
1,050,000
850,500
960
1,200,000
972,000
j Ratings are shown for elevations up to 2000 feet. For higher elevations, refer to section "Considerations for Elevation" on page 14.
k Minimum Air Temperature Rise, Maximum Air Temperature Rise, and Maximum Discharge Air Temperature are as follows:
-For Model Sizes 75-400, Min Air Temp Rise is 20°F, Max Air Temp Rise is 100°F, and Max Discharge Air Temp is 150°F.
-For Model Sizes 500-800, Min Air Temp Rise is 40°F, Max Air Temp Rise is 120°F, and Max Discharge Air Temp is 150°F.
-For Model Sizes 840-960, Min Air Temp Rise is 60°F, Max Air Temp Rise is 120°F, and Max Discharge Air Temp is 150°F.
-Note that these are typical limits but may vary by Model Size. Refer to Table 36.1 for actual limits.
l For Variable Air Movement Applications, see page 25.
Air Temperature Limits
The maximum allowable discharge air temperature is 150°F. The maximum allowable air temperature rise per furnace for Low Air
Temperature Rise Units is 60°F. All system units are designed for a maximum allowable total static pressure of 3.0" W.C.
20
40
50
2,813
1,406
1,125
3,750
1,875
1,500
4,688
2,344
1,875
5,500
2,813
2,250
5,500
3,281
2,625
6,500
3,750
3,000
6,500
4,219
3,375
9,375
4,688
3,750
11,250
5,625
4,500
12,000
6,563
5,250
12,000
7,500
6,000
-
9,375
7,500
-
11,250
9,000
-
13,000
10,500
-
14,500
12,000
-
-
-
-
-
-
5-594.10
Air Temperature Rise Through Unit (°F)
60
70
80
938
804
703
1,250
1,071
938
1,563
1,339
1,172
1,875
1,607
1,406
2,188
1,875
1,641
2,500
2,143
1,875
2,813
2,411
2,109
3,125
2,679
2,344
3,750
3,214
2,813
4,375
3,750
3,281
5,000
4,286
3,750
6,250
5,357
4,688
7,500
6,429
5,625
8,750
7,500
6,563
10,000
8,571
7,500
13,000
11,250
9,844
14,500
12,857
11,250
90
100
110
625
562
-
833
750
-
1,042
937
-
1,250
1,125
-
1,458
1,312
-
1,667
1,500
-
1,875
1,687
-
2,083
1,875
-
2,500
2,250
-
2,917
2,625
-
3,333
3,000
-
4,167
3,750
3,409
5,000
4,500
4,091
5,833
5,250
4,773
6,667
6,000
5,455
8,750
7,875
7,159
10,000
9,000
8,182
120
-
-
-
-
-
-
-
-
-
-
-
3,125
3,750
4,375
5,000
6,562
7,500
37
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