Hot-Water Heaters

Radiating to heating surface

6.8

7.6

8.1

8 .4

9

9.3

10

10.4

10.5

10.5

18.5*

10.51

13.5*

Radiating to grate surface A

247

266

270

292

315

337

360

382 405

427

450

Radiating to grate- surface B

193

207

216

232

252

270

288

306

324

342

860

Heating to grate surface A

36.5

33.2

88.2

34.8

35

86.2

36.5

37 | 38.5

40.5

31.5

42.5

33.3

Heating to grate surface B

28.5

27

26.7

27.7

28

29

28.5

29.6 30.8

32.7

25.6*

34.5

26.5*

Heating surface, sq. ft.......

36.5

65

91.5

118

166

216

296

385

470

703

906

Grate surface, sq. ft..........A

1

1.96

2.75

3.75

4.75

5.9

8.2

10.4

13.3

17.6

22.2

Grate surface, sq. ft. B

1.25

2.58

3.6

4.25

5.9

7.1

10.3 13

15.3

21.5

27.5

Diam. smoke flue, in...........

7

10

11

12

15

17

19

2

25

28

34

* Water-tube boiler.