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A.O. Smith HW 610 Commercial Boiler With Horizontal Tank, Model, Pipe Size, Armstrong, Number

Models: HW 610

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TWO HW-300's, HW-399's, HW-420's, HW-520's, HW-610's OR HW-670's UP-FLOW MODEL

COMMERCIAL BOILER WITH HORIZONTAL TANK

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.

**INSTALL THERMOMETER AND PRESSURE RELIEF IN

OPENINGS PROVIDED ON HW-520, HW-610 & HW-670.

WIRING - FIGURES 21 to 27 on

pages 28 to 32.

INSTALL IN ACCORDANCE

WITH ALL LOCAL CODES

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.

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 31.

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A.O. Smith HW 610 Commercial Boiler With Horizontal Tank, WIRING - FIGURES 21 to 27 on pages 28 to, Model, Pipe Size, Pump
Page 35 Page 37