Dimensions And Capacity Data - A.O. Smith HW 300 Instruction Manual

DIMENSIONS IN INCHES
A
Overall height
B Height to Top of Jacket
C Floor to Center Line Water Inlet
D Diameter of Jacket
E Floor to Center Line Water Outlet
F Draft Diverter Outlet Diameter
G Floor to Center Line Gas Inlet
H Overall Depth
J Support Height
K Width of Control String (approx.)
L Pipe Size of Water Inlet (NPT)
M Pipe Size of Water Outlet (NPT)
N Pipe Size of Gas Inlet (NPT)
P Control String Plus 1/2 Jacket Diameter (approx.)
S Horizontal Length between Water Inlet and Outlet
T Control String from Jacket
Approximate shipping weight lbs. (Kilograms)
NOTE: All dimensions in inches (millimeters) except pipe size which is NPT
MODELS INPUT RATING BTU/HR
NATURAL & PROPANE (LP) GAS
HW 300
HW 399
HW 420
HW 520
HW 670 Nat
HW 670 Prop

DIMENSIONS AND CAPACITY DATA

FIGURE 1. DIMENSIONS
TABLE 1. DIMENSIONS AND CAPACITY DATA
43-1/4 (1099)
25-1/4 (641)
16-1/2 (419)
29-5/8 (753)
26-5/8 (676)
5-3/8 (137)
TABLE 2. FLOW, HEAD AND TEMPERATURE RISE
BTU INPUT/OUTPUT
OUTPUT RATING BTU/HR
NATURAL & PROPANE (LP) GAS
300,000
399,000
420,000
520,000
660,000
670,000
EXTRA OPENING
FOR THERMOMETER
A N D P R E S S U R E
RELIEF VALVE
HW-520 AND
HW--670
HW-300 HW-399
65 (1651) 57-1/8 (1451)
45-1/8 (1146)
36 (914) 38-3/4 (984)
27 (686)
12 (305) 12 (305)
8 (203) 10 (254)
16-3/4 (425)
31-1/2 (800)
9 (229) 9 (229)
14 (356) 14 (356)
1-1/4 1-1/2
1-1/4 1-1/2
3/4 3/4
27-1/2 (699)
5-1/2 (140)
5 (127) 5 (127)
250 (113) 301 (137)
240,000
319,200
336,000
416,000
528,000
536,000
6
MODELS
HW-420 HW-520
57-1/8 (1451) 68-5/16 (1735)
45-1/8 (1146) 56-1/4 (1429)
38-3/4 (984) 46 (1168)
27 (686) 27 (686)
12 (305) 12 (305)
10 (254) 10 (254)
16-3/4 (425) 18 (457)
31-1/2 (800) 36-1/2 (927)
9 (229) 9 (229)
14 (356) 11 (279)
1-1/2 2
1-1/2 2
1 1
27-1/2 (699) 24-1/2 (622)
5-1/2 (140) 5-3/4 (146)
5 (127) 7 (178)
301 (137) 381 (173)
TEMPERATURE RISE AND PRESSURE DROP
20 DEG. F 30 DEG. F
RISE RISE
GPM PD-FT GPM PD-FT
HEAD HEAD
24 8 16 3
32 16 21 7
34 18 22 8
42 12 28 5
53 22 35 10
54 22 36 10
HW-670
67-1/2 (1715)
56-1/4 (1429)
46 (1168)
27 (686)
12 (305)
12 (305)
18 (457)
36-1/2 (927)
9 (229)
11 (279)
2
2
1
24-1/2 (622)
5-3/4 (146)
7 (178)
381 (173)
40 DEG. F
RISE
GPM PD-FT
HEAD
12 2
16 5
17 5.5
21 4
26 5.5
27 5.5