A.O. Smith 3400 User Manual
Page 7
7
TABLE 3. ROUGH IN DIMENSIONS (DOUBLE)
Models
XB-2000
XB-2600
XB-3400
Dimensions
inches
mm
inches
mm
inches
mm
Flue Outlet Diameter
8
203
8
203
10
254
Air Intake Diameter
8
203
8
203
10
254
Water Inlet
3 inch NPT
4 inch NPT
Water Outlet
3 inch NPT
4 inch NPT
Gas Inlet
2 inch NPT
3 inch NPT
A
47
1194
49
1245
57
1448
B
78
1981
80
2032
91
2311
C
36
914
37
940
37
940
D
22
559
22
559
22
559
E
40
1016
41
1041
41
1041
F
7
178
6
152
6
152
G
10
254
10
254
10
254
H
4
102
4
102
4
102
J
20
508
19
483
19
483
K
12
305
12
305
13
330
FIGURE 2. DOUBLE HEAT EXCHANGER BOILER
7 7/8"
D
31 7/8"
34 1/4"
55 7/8"
66 1/8"
26 3/4"
86 1/4"
K
B
J
G
10"
31 3/8"
C
E
H
AIR INTAKE
FLUE OUTLET
A