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4NL-W Coal
Ratings
2 pgs614.32 Kb0

Burnham 4NL-W Coal Ratings

Series 4N NATURAL DRAFT FIREBOX BOILER
RATINGS FOR OIL, GAS OR STOKER FIRING
4N BOILER MODELS 63 78 92 107 127 154 180 209 240 277 311 345 397
Gross Output MBH
BHP Lbs. Stm./Hr.
Net Rating Steam MBH
Sq. Ft.
Net Rating Water MBH
Firing Rate - Gas MBH Light Oil (140,000 BTU/Gal.)
Heavy Oil (150,000 BTU/Gal.)
Coal (Stoker) Lbs./Hr.
Heating Surface Sq. Ft.
Fireside Waterside
Furnace Volume Cu. Ft. *
Heat Release MBH/Cu. Ft.
Water Content Gals. Steam
Wate r
Approx. Dry Weight Lbs.
Approx. Weight Full Lbs. Steam
Wate r
245
299
348
403
522
626
724
870
996
7.3
8.9
10.4
12.0
15.6
18.7
21.6
26.0
29.8
34.1
887
10.2 —
210 221
239 323
38.2
992
11.4 —
235 247
267 362
253
308
359
415
538
645
746
897
190
232
270
313
405
486
562
675
7.8 —
153 160
197 267
773
8.9 —
183 193
209 283
790
970
213 260 303 351 454 545 630 757 867 994 1,112 1,230 1,878
306
374
435
504
653
783
905
2.2
2.7
3.1
3.6
4.7
—
—
—
—
25 31 36 41 54 64 74 89 102 117 131 145 222
45
55
64
47
57
8.8 10.7 12.6 14.6 18.3 21.9 25.3 29.1 34.7 39.7 44.4 49.1 58.9
34.8 35.0 34.5 34.5 35.7 35.8 35.8 37.4 35.9 36.0 36.0 36.0 45.8
67
83
92
11496134
1,500 1,700 1,900 2,200 2,500 2,800 3,100 3,400 3,900 4,300 4,900 5,200 6,500
74
67
77
100
113
133
156
168
—
96
5.6 —
115 120
149 200
6.5 —
133 139
171 231
42.2
12.6 —
260 274
295 401
65
19.3
18.0
397 429
421 520
10,005 10,830
4N BOILER MODELS 463 563 662 827 993 1157 1323 1654 1985 2315 2645 3075
Gross Output MBH
BHP Lbs. Stm./Hr.
Net Rating Steam MBH
Sq. Ft.
Net Rating Water MBH
Firing Rate - Gas MBH Light Oil (140,000 BTU/Gal.) Heavy Oil (150,000 BTU/Gal.)
Coal (Stoker) Lbs./Hr.
Heating Surface Sq. Ft.
Fireside Waterside
Furnace Volume Cu. Ft. *
Heat Release MBH/Cu. Ft.
Water Content Gals. Steam
Wate r
Approx. Dry Weight Lbs.
Approx. Weight Full Lbs. Steam
Wate r
All models have 3 inch diameter tubes—except 3075 has 2-1/2 inch tubes. * = does not include base volume.
2,190 2,663 3,131 3,912 4,697 5,473 6,258 7,824 9,390 10,951 12,512 14,554
8,000 8,500 10,100 12,300 13,300 16,600 18,600 21,700 26,500 32,800 37,500 48,200
12,100 13,055
75
22.5
21.0
258 314 369 461 554 646 738 923 1,108 1,292 1,476 1,717
463 500
68.0 89.3 104.7 115.6 139.2 160.7 186.5 234.0 301.6 348.6 383.8 505.6
46.3 42.9 43.0 48.7 48.5 49.0 48.2 48.1 44.8 45.2 46.9 41.4
492 607
13,515 14,665
92
27.3
25.5
563 608
602 740
108
11,650
32.1
30.0
662 715
712 875
16,030 17,390
134
14,555
40.2
37.5
827 893
761
18,630 20,645
161
17,475
48.2
45.0
993
925
21,005 23,455
188
20,360
56.2
52.5
25,340 27,675
215
23,280
64.3
60.0
28,815 31,540
269
29,110
11,248
80.3
75.0
33,710 36,900
10,798
323
11,129
34,930
13,498
96.4
90.0
40,815 44,370
12,594
376
12,979
40,740
15,743
49,270 53,385
14,389
430
14,829
11,172 46,550
17,986
55,590 60,120
16,738
500
17,250
12,989 54,120
20,923
71,630 78,710
Series 4N RATINGS
• Compact, ecient three-pass rebox design • 15 psi steam, 30 psi water
• Applications ring solid fuel, gas or oil • Ample rebox assures non-critical
combustion, high eciency
RATINGS FOR HAND FIRING
4N BOILER MODELS
Net Rating - Steam or Water MBH Net Rating - Steam Sq. Ft. Net Rating - Water Sq. Ft.
Heating Surface - Sq. Ft. Fireside Waterside
Grate Area Sq. Ft. 4.0 5.1 6.1 7.2 7.2 8.8 10.3 12.0 12.6 12.6 13.4 14.5
Furnace Volume Cu. Ft. 8.8 10.7 12.6 14.6 18.3 21.9 25.3 29.1 34.7 39.7 44.4 49.1
Heat Release MBH/Cu. Ft. 39.9 40.1 39.2 39.2 40.5 41.0 41.1 42.9 41.2 41.3 41.0 41.0
Water Content - Gals. Steam Water
Approx. Dry Weight - Lbs. 1,900 2,200 2,500 2,900 3,200 3,700 4,100 4,600 5,150 5,550 6,250 6,650
Approx. Full Weight - Lbs. Steam Water
4N BOILER MODELS
Net Rating - Steam or Water MBH Net Rating - Steam Sq. Ft. Net Rating - Water Sq. Ft.
Heating Surface - Sq. Ft. Fireside Waterside
63 78 92 107 127 154 180 209 240 277 311 345
158
192
225
259
337
404
468
538
649
744
210 221
239 323
831 3,460 5,540
235
247
267
362
37,485 60,005
10,278 42,825 68,555
660
800
935
45
55
64
74
96
115
133
47
57
67
77
100
120
67
83
92
11496134
14,595
46350563
397 463 563 662 827 993 1157 1323 1654 1985 2315 2645
11,500
397 429
608
113 156
662 715
133 168
827 893
149 200
993
139
171 231
153 160
197 267
26,780 42,870
183 193
209 283
922
260 274
295 401
Grate Area Sq. Ft. 16.4 18.1 20.5 22.5 25.6 28.4 30.9 33.2 37.4 41.2 44.7 48.0
Furnace Volume Cu. Ft. 58.9 68.0 89.3 104.7 115.6 139.2 160.7 186.5 234.0 301.6 348.6 383.8
Heat Release MBH/Cu. Ft. 52.3 53.0 49.1 49.2 55.6 55.5 56.0 55.1 55.0 51.2 51.6 53.6
Water Content - Gals. Steam Water
Approx. Dry Weight - Lbs. 8,150 9,800 10,550 12,350 14,850 16,150 19,700 21,900 25,450 30,600 37,250 42,300
Approx. Full Weight - Lbs. Steam Water
Grates for hand ring are not supplied by Burnham Commercial. Select boiler on net rating to match building heat loss or installed radiation.
421 520
11,645 12,470
492 607
13,910 14,865
602 740
15,565 16,715
712 875
18,280 19,640
761
21,190 23,200
925
23,845 26,295
28,480 30,715
32,132 34,860
37,450 40,640
44,935 48,490
53,740 57,855
60,400 64,920
©2012 Burnham Commercial P.O. Box 3939 • Lancaster, PA 17604 Phone: 888.791.3790 • Fax: 717.293.5803 www.burnhamcommercial.com
Form No. PL81465521006-12/12-1Mc Printed in the U.S.A.
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