Table des Matières
Publicité
PERFORMANCE
Table 15.1 - Air Temperature Rise jkl
Model
Input
Output
Size
(Btu/Hr)
(Btu/Hr)
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 13,125 n
400
400,000 324,000 15,000 n
j Ratings are shown for elevations up to 2000 feet. For higher elevations, refer to section "Considerations for Elevation" on page 9.
k Minimum Air Temperature Rise is 20°F and Maximum Air Temperature Rise is 100°F. The Maximum Discharge Air Temperature is 150°F.
l For Variable Air Movement Applications, see page 13.
m Models are supplied with a factory installed air baffle. For applications where an air tempature rise less than 60°F is desired, it is recomended to remove this baffle to reduce system
pressure drop. Refer to page 4.
n The maximum CFM for the 350 and 400 sizes is 11,111CFM based on the maximum unit pressure drop when using the factory installed air baffle.
Figure 15.1 - Recommended Unit Configurations o
2,308 CFM
2,308 CFM
o All duct furnaces are designed for a maximum allowable static pressure of 3.0" W.C. on the heat exchanger.
Figure 15.2 - Pressure Drop vs CFM (Without Baffle)
1.4
Caution:
Do not exceed the CFM ranges
1.2
indicated in Table 15.1
1
0.8
150/175
0.6
100/125
0.4
75
0.2
0
20 m
40 m
50 m
2,813
1,406
1,125
3,750
1,875
1,500
1,250
4,688
2,344
1,875
1,563
5,625
2,813
2,250
1,875
6,563
3,281
2,625
2,188
7,500
3,750
3,000
2,500
8,438
4,219
3,375
2,813
9,375
4,688
3,750
3,125
11,250
5,625
4,500
3,750
6,563
5,250
4,375
7,500
6,000
5,000
162,000
162,000
162,000
250/300
350/400
200/225
CFM
Air Temperature Rise Through Unit (°F)
60
65
70
75
938
865
804
750
1,154
1,071
1,000
1,442
1,339
1,250
1,731
1,607
1,500
2,019
1,875
1,750
2,308
2,143
2,000
2,596
2,411
2,250
2,885
2,679
2,500
3,462
3,214
3,000
4,038
3,750
3,500
4,615
4,286
4,000
5,769 CFM
Figure 15.3 - Pressure Drop vs CFM (With Baffle)
3.0
2.8
Caution:
Do not exceed the CFM ranges
2.6
indicated in Table 15.1
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
5-564.4
80
85
90
703
662
625
938
882
833
1,172
1,103
1,042
1,406
1,324
1,250
1,641
1,544
1,458
1,875
1,765
1,667
2,109
1,985
1,875
2,344
2,206
2,083
2,813
2,647
2,500
3,281
3,088
2,917
3,750
3,529
3,333
202,500
202,500
200/225
150/175
100/125
75
CFM
95
100
592
563
789
750
987
938
1,184
1,125
1,382
1,313
1,579
1,500
1,776
1,688
1,974
1,875
2,368
2,250
2,763
2,625
3,158
3,000
250/300
350/400
15
Publicité
Table des Matières
