A.O. Smith VB/VW- 1000 - Manual (Page 4)

4
Minimum clearances to combustibles:
• 4” (102mm) rear
• 0” (0mm) top & sides
• 6” (152mm) vent
TABLE 1. - GAS AND ELECTRICAL CHARACTERISTICS
Manifold Pressure Maximum Supply Pressure Minimum Supply Pressure
Model Type of Gas Inches W.C. kPa Inches W.C. kPa Inches W.C. kPa
VB/VW-500, 750, 1000 NATURAL -2 to -3.5 -.5 to .9 14 3.44 4.0 2.0
VB/VW-500, 750, 1000 PROPANE -2 to -3.5 -.5 to .9 14 3.44 8.0 2.0
Minimum Pressures must be maintained during all operating conditions.
Electrical Power: 120v, 60hz, and 30 amps.
Models VB/VW-500 VB/VW-750 VB/VW-1000
Dimensions inches mm inches mm inches mm
Flue Outlet Diameter 6 152 6 152 6 152
Air Intake Diameter 4 102 4 102 4 102
Water Inlet 2” NPT
Water Outlet 2” NPT
Gas Inlet 1” NPT
A 56 1422 62 1575 71 1803
B 30 762 30 762 30 762
C 30 762 30 762 30 762
D 45 1143 51 1295 59 1499
E 36 914 42 1067 48 1219
F 16.5 419 16.5 419 16.5 419
G 8 203 8 203 8 203
H 15 381 15 381 15 381
J 9 229 9 229 9 229
K 11.5 292 11.5 292 11.5 292
L 11 279 11 279 11 279
M 10.5 267 10.5 267 10.5 267
N 33 838 33 838 33 838
P 31 787 31 787 31 787
DIMENSION AND CAPACITY DATA
TABLE 2. - ROUGH-IN DIMENSIONS
FIGURE 1.