North American 4452 Gas Burner Engineering Data
Sheet 4452-3
Cold Air (100°F) Capacities & Excess Air Limits For capacities in Btu/hr multiply cfh air by 100 (use 91 for 10% excess air)
4452-6-A
.2 osi
1 osi
4 osi
9 osi 8,310 350%
12 osi 9,430 350%
16 osi 11,110 350%
20 osi 12,420 300%
4452-6-A Capacity Max % Excess Air
1,260
2,700 700%
5,560 400% 100%
1000%
Max % Excess Air for <50 ppm CO Upstream Gas Pressure at 10% XSAir "wc
60%
0.0
0.0
0.2
0.4
0.5
0.6
0.8
Flame Length Beyond Tube at 10% XSAir (inches)
0
0
12
12
12
24
24
4452-6-B
.2 osi
1 osi
4 osi
9 osi
12 osi 13,410 350%
16 osi
20 osi 17,430 300%
4452-6-B Capacity Max % Excess Air
1,785
3,800 1000%
7,700 350% 100%
11,530 350%
15,630 300%
1000%
Max % Excess Air for <50 ppm CO Upstream Gas Pressure at 10% XSAir "wc
60%
0.0
0.1
0.5
1.0
1.4
2.0
2.4
Flame Length Beyond Tube at 10% XSAir (inches)
3
6
12
12
12
24
24
4452-7
.2 osi
1 osi
4 osi
9 osi
12 osi
16 osi
20 osi
4452-7 Capacity Max % Excess Air
3,110
6,680 1000%
13,050 450%
19,750 350%
22,600
26,180 200%
29,580 200%
1000%
250%
Max % Excess Air for <50 ppm CO Upstream Gas Pressure at 10% XSAir "wc
75%
50% 0.35
0.0
0.0
0.0
0.2
0.2
0.6
Flame Length Beyond Tube at 10% XSAir (inches)
0
0
12
18
24
24
24
4452-8-A
.2 osi 3,880 1000%
1 osi
4 osi
9 osi
12 osi
16 osi
20 osi 40,710 250%
4452-8-A Capacity Max % Excess Air
8,940 1000%
18,020 26,930 31,840
36,360 300%
500%
500%
500%
Max % Excess Air for <50 ppm CO Upstream Gas Pressure at 10% XSAir "wc
75%
50%
0.0
0.1
0.3
0.8
1.1
1.5 36
1.8 36
Flame Length Beyond Tube at 10% XSAir (inches)
8
12
18
18
24
NOTE: Areas left blank represent data points not recorded in laboratory testing.
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