Form I-X, P/N 150491 R7, Page 6
4.0 Dimensions
and
Clearances
4.1 Dimensions
Size A B D E G H J K P Q Flue
Dimensions (inches)
75 19-1/4 32-1/4 12-1/2 14 30-1/4 2 9-5/8 13-3/4 3-1/2 20-3/4 5" Round
100 19-1/4 32-1/4 12-1/2 14 30-1/4 2 9-5/8 13-3/4 3-1/2 20-3/4 6" Round
125 22 32-1/4 15-1/4 16-3/4 30-1/4 2 11 16-1/2 3-1/2 20-3/4 7" Oval
150, 175 27-1/2 32-1/4 20-3/4 22-1/4 30-1/4 2 13-3/4 22 3-1/2 20-3/4 8" Oval
200, 225 33 35-1/4 26-1/4 27-3/4 31-3/4 3-1/2 16-1/2 27-1/2 5 19-1/4 8" Round
250, 300 41-1/4 35-1/4 34-1/2 36 31-3/4 3-1/2 20-5/8 35-3/4 5 19-1/4 10" Oval
350 46-3/4 35-1/4 40 41-1/2 31-3/4 3-1/2 23-5/8 41-1/4 5 19-1/4 12" Oval
400 52-1/4 35-1/4 45-1/2 47 31-3/4 3-1/2 26-1/8 46-3/4 5 19-1/4 12" Oval
Dimensions (mm)
75 489 819 318 356 768 51 244 349 89 527 127 Round
100 489 819 318 356 768 51 244 349 89 527 152 Round
125 559 819 387 425 768 51 279 419 89 527 178 Oval
150, 175 699 819 527 565 768 51 349 559 89 527 203 Oval
200, 225 838 895 667 705 806 89 419 699 127 489 203 Round
250, 300 1048 895 876 914 806 89 524 908 127 489 254 Oval
350 1188 895 1016 1054 806 89 600 1048 127 489 305 Oval
400 1327 895 1156 1194 806 89 664 1187 127 489 305 Oval
FIGURE 5 - Model X
Dimensions - inches (mm)
4.2 Clearances
Required Clearances
Top
Sides Bottom
Control Opposite To Combustibles To Non-Combustibles
6" (152mm) See Note 6" (152mm) 3" (76mm) 0
Clearance to combustibles is dened as the minimum distance from the heater to a
surface or object that is necessary to ensure that a surface temperature of 90°F above
the surrounding ambient temperature is not exceeded.
Clearance is also required to sides of furnace for combustion air space and for conve-
nient installation and burner control service.
NOTE: To have sufcient
space to remove the
drawer-type burner rack,
the clearance on the control
side of the furnace must be
the width of the furnace plus
6" (152mm).
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