Rough-In Dimensions/Capacities; Installation Clearances; Levelling - A.O. Smith DB/DW-720-1810 User Manual

Label all wires prior to disconnection when servicing controls. Wiring
errors can cause improper and dangerous operation.
"Verify proper operation after servicing."
ROUGH-IN DIMENSIONS/
CAPACITIES

INSTALLATION CLEARANCES

These boilers are approved for installation on combustible flooring
in an alcove with minimum clearance to combustibles See chart
below.
AN AMPLE SUPPLY OF AIR MUST BE PROVIDED
FOR PROPER COMBUSTION AND VENTILATION.
TABLE 1, ROUGH-IN DIMENSIONS
Models DW-720 DW-840
Dimensions inches mm inches
A
46 1/2 1181 52 1/5
B 29 5/8 752 29 5/8
C
54 3/4 1391 54 3/4
D 1 1/4 NPT 1 1/4 NPT
E 7 3/4 197 7 3/4
F 15 1/2 394 15 1/2
G
17 1/4 438 17 1/4
H 4 1/4 108 4 1/4
J 2 NPT
K 2 NPT
L 1 NPT
M 12 305 14
N 15 1/2 394 16 1/2
W 32 1/8 816 31 1/8
Approx.
Shipping
780 lbs 354 Kg. 950 lbs 431 Kg 950 lbs 431 Kg 1000 lbs 454 Kg 1075 lbs 488 Kg. 1100 lbs 499 Kg 1125 lbs 510 Kg 1150 lbs 522 Kg 1250 lbs 567 Kg
Weight.
All Models
CAUTION
WARNING
DW-960 DW-1080
mm inches mm inches
1326 57 3/4 1467 52 7/8
752 29 5/8 752 32 3/4
1391 54 3/4 1391 58
1 1/4 NPT 1 1/4 NPT
197 7 3/4 197 7 1/2
394 15 1/2 394 18 1/2
438 17 1/4 438 18 9/16
108 4 1/4 108 4
2 NPT 2 NPT 2 1/2 NPT
2 NPT 2 NPT 2 1/2 NPT
1 NPT 1 NPT 1 1/4 NPT
356 14 356 16
419 16 1/2 419 17 1/4
791 32 1/8 816 30 15/16
Minimum Clearances To Combustibles
Water
Top Side
12" (305mm) 18" (457mm)
Two inch clearance is allowable from combustible construction for
hot water pipes.
Sufficient clearance should be provided at one end of the boiler to
permit access to heat exchanger tubes for cleaning. Maximum
operating water supply pressure 160 psi. Gas supply pressure:
13.8" w.c. max., 5.5" w.c. min.
Sufficient area should be provided at the front and sides of the unit
for proper servicing. Clearances of 48" in front and 24" on sides is
recommended. In a utility room installation, the door shall be wide
enough to allow the boiler to enter or to permit the replacement of
another appliance.
Each unit should be checked after installation to be certain that it is
level.
DW-1210 DW-1350
mm inches mm inches
1343 58 1/2 1486 64 1/2
832 32 3/4 832 32 3/4
1473 58 1473 58
1 1/2 NPT 1 1/2 NPT
191 7 1/2 191 7 1/2
470 18 1/2 470 18 1/2
471 18 9/16 471 18 9/16
102 4 102 4
2 1/2 NPT 2 1/2 NPT
2 1/2 NPT 2 1/2 NPT
1 1/4 NPT 1 1/4 NPT
406 16 406 18
438 17 1/4 438 17 1/4
786 30 15/16 786 30 15/16
Blank
Side Rear
6" (155mm) 6" (155mm)
3

LEVELLING

DW-1480 DW-1610
mm inches mm inches
1638 69 1/2 1765 75
832 34 864 34
1473 60 1/2 1537 60 1/2
1 1/2 NPT 2 NPT
191 7 1/2 191 7 1/2
470 18 1/2 470 18 1/2
471 19 1/8 486 19 1/8
102 4 1/2 114 4 1/2
2 1/2 NPT 2 1/2 NPT
2 1/2 NPT 2 1/2 NPT
1 1/4 NPT 1 1/4 NPT
457 18 457 18
438 13 3/4 349 13 3/4
786 31 787 31
Vent Front
6" (155mm) Alcove
DW-1810
mm inches mm
1905 82 1/2 2096
864 34 864
1537 60 1/2 1537
2 NPT
191 7 1/2 191
470 18 1/2 470
486 19 1/8 486
114 4 1/2 114
2 1/2 NPT
2 1/2 NPT
1 1/4 NPT
457 20 508
349 13 3/4 349
787 31 787