Manuals / A.O. Smith / Household Appliance / Boiler

A.O. Smith HW 610 TWO HW-399s, HW-420s, HW-520s, HW-610s or HW-670s UP-FLOW MODEL, Model, Number

Models: HW 610

1 56
Download 56 pages 1.45 Kb
Page 35
Image 35
TWO HW-399's, HW-420's, HW-520's, HW-610's or HW-670's UP-FLOW MODEL

TWO HW-399's, HW-420's, HW-520's, HW-610's or HW-670's UP-FLOW MODEL

COMMERCIAL BOILER WITH VERTICAL TANK, CER-TEMP 80

IMPORTANT

THE INSTALLATION OF SAFETY FLOW SWITCH AS SHOWN IS

REQUIRED TO PROTECT THE BOILER IN CASE OF WATER SERVICE

INTERRUPTION OR CIRCULATOR FAILURE.

+ PIPING AND FITTINGS BETWEEN GATE VALVES AND BOILERS SHOULD BE BRASS OR BRONZE. OTHER PIPING SHOULD CONFORM TO LOCAL CODES.

GATE VALVES ARE SHOWN FOR SERVICING BOILER. HOWEVER,

LOCAL CODES SHALL GOVERN THEIR USAGE.

*PRESSURE RELIEF VALVE RATING SHOULD NOT EXCEED PRESSURE CAPACITY OF ANY COMPONENT IN THE SYSTEM.

** INSTALLTHERMOMETERAND PRESSURE RELIEF IN OPENINGS PROVIDED ON HW-520, HW-610 & HW-670.

DANGER

TEMPERATURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERATURE

AT FIXTURES. SEE TANK TEMPERATURE CONTROL WARNING ON PAGE 11. IF

HIGHER PREHEAT TEMPERATURES ARE NECESSARY TO OBTAIN ADEQUATE

BOOSTER OUTPUT, ADD AN ANTI-SCALD VALVE FOR HOT WATER SUPPLIED

TO FIXTURES.

WIRING - FIGURES 21 to 27 on

pages 28 to 32.

HEATERS SPACED 30" APART

INSTALL IN ACCORDANCE

WITH ALL LOCAL CODES

USE THIS TABLE FOR CORRECT

PUMP AND WATER PIPE SIZE

 

Minimum

B & G

 

Model

Pipe Size

*Armstrong

Number

(Inches)

Pump

Pump Size

 

 

 

Size

 

 

A

B

 

 

 

 

HW-300

2"

1-1/2"

2"

S-35

HW-399

2"

1-1/2"

2"

S-35

HW-420

2"

1-1/2"

2"

S-35

HW-520

2"

1-1/2"

2"

S-35

HW-610/670

2-1/2"

1-1/2"

2-1/2"

S-45 2-1/2"

*Assumes 50 equivalent feet of piping or less.

FIGURE 30.

35

Page 34 Page 36
Page 35
Image 35
A.O. Smith HW 610 TWO HW-399s, HW-420s, HW-520s, HW-610s or HW-670s UP-FLOW MODEL, Model, Pipe Size, Armstrong, Number
Page 34 Page 36