A.O. Smith HW-520 사용자 설명서

ROUGH-IN DIMENSIONS

TABLE 2, SPECIFICATIONS - CANADIAN MODELS ONLY

Maximum

I.A.S.

Maximum

Max. Heat Transfer

Model

Type of Gas

BTUH(KW)

Heat Loss Load

Surface Area (Sq. Ft.)

HWB-300

Natural & Propane

300,000 (88)

247,200 (72)

210,120 (62)

1,410 (.41)

1,051 (.31)

HWB-399

Natural & Propane

399,000 (116)

322,790 (95)

274,371 (80)

1,829 (.54)

1,372 (.40)

HWB-420

Natural & Propane

420,000 (123)

344,400 (101)

292,740 (86)

1.952 (57)

1,464 (.43)

HWB-520

Natural & Propane

520,000 (152)

429,000 (126)

364,650 (107)

2,431 (.71)

1,823 (.53)

HWB-610

Natural

610,000 (179)

502,600 (147)

427,210 (125)

2,848 (.83)

2,136 (.61)

HWB-610

Propane

610,000 (179)

488,000 (143)

414,800 (121)

2,765 (.81)

2,074 (.61)

Ratings shown are for current modern heating system design. Where A.O. Smith boilers are connected to heavy, cast iron radiator systems or where unusual pick-up or
large size piping conditions exist, reduce ratings by 10%.

NOTE: To compensate for the effects of high altitude areas above 2000 feet, the input, output and heating load ratings should be reduced
approximately 4% for each 1000 feet above sea level.

EXTRA OPENING
FOR THERMOMETER
AND RELIEF VALVE
HW/HWB-520, 610
AND HW--670

HW/HWB-610

AND HW-670

NATURAL GAS ONLY

TABLE 1

MODELS

Prop.

Nat.

HWB/

HW-300

HW-399

HW-420

HW-520

HW-610/670 HW-610/670

Overall height

65 (1651)

57-1/8 (1451)

57-1/8 (1451) 68-5/16 (1735)

67 (1702)

64-3/4 (1645)

Height to top of jacket

43-1/4 (1099)

45-1/8 (1146)

56-1/4 (1429) 56-1/4 (1429) 56-1/4 (1429)

Floor to center line water inlet

36 (914)

38-3/4 (984)

46 (1168)

Diameter of jacket

25-1/4 (641)

27 (686)

Floor to center line water outlet

12 (305)

Draft diverter outlet diameter

8 (203)

10 (254)

12 (305)

Floor to center line gas inlet

16-1/2 (419)

16-3/4 (425)

18 (457)

Overall depth

29-5/8 (753)

31-1/2 (800)

36-1/2 (927)

36-1/2 (927) 36-1/2 (927)

Support height

9 (229)

9(229)

9 (229)

Width of control string (approx.)

14 (356)

11(279)

11 (279)

Pipe size of water inlet (NPT)

1-1/4

1-1/2

Pipe size of water outlet(NPT)

1-1/4

1-1/2

Pipe size of gas inlet (NPT)

3/4

Control string plus 1/2 jacket dia. (approx.)

26-5/8 (676)

27-1/2(699)

27-1/2 (699)

24-1/2 (622)

24-1/2 (622) 24-1/2 (622)

Water outlet to jacket

1 (25)

3-1/2 (89)

Water inlet casting to center line of jacket

10-1/8 (257)

11-1/4 (286)

12 (305)

Horizontal length between water inlet and outlet

5-3/8 (137)

5-1/2 (140)

5-3/4 (146)

Control string from jacket

5 (127)

7 (178)

Approx. shipping weight lbs. (Kilograms)

240 (109)

291 (132)

361 (164)

NOTE: All dimensions in inches (millimeters) except pipe size which is NPT.

DIMENSIONS IN INCHES