A.O. Smith LB-500 User Manual

Submittal Sheet

Job name ____________________________________

_____________________________________________

Address _____________________________________

_____________________________________________

Architect _____________________________________

Engineer _____________________________________

Contractor ___________________________________

Distributor ____________________________________

COMMERCIAL BOILER

MODEL LB-500, 750 and 1000

_____________________________________________

A.O.Smith Representative ______________________

_____________________________________________

Model _____________________ # of Units _________

Input ____________________ Natural Gas

Total Btuh Input_______________________________

Standard Equipment

– Inconel 625 stainless super

alloy burner –Bronze headers – ASME pressure relief valve 30# – LED inlet & outlet thermometers – 160 psi ASME working pressure – Authorized factory start-up – 10 year heat exchanger warranty

Standard Controls

– Main & redundant gas valves – Auto reset high limit – Manual reset high limit – Hot surface electronic ignition

system – Low gas pressure switch – Dia-Scan solid state diagnostic

module

Optional Equipment

MEETS OR EXCEEDS ASHRAE/IES 90.1B-1992

ASME

– Low air pressure switch – Mounted flow switch – Adjustable high limit – On/Off switch – 24 volt control system – FM Approved Gas Train

IRI Gas Train

CSD-1 Code

Low Water Cutoff

*NOTE: All venting for direct/sealed vent systems must be provided by A. O. Smith or an approved supplier.

NY Code

California Code

Illinois School Code

Contact your A. O. Smith representative for information.

Vent System*

Sequencing Panel

Minimum clearances to combustibles:

4" rear, 0" top & sides, 6" vent

Gas supply pressure 13.8" w.c. maximum natural and propane; 7" w.c. minimum natural,11.0" w.c. minimum propane.

MODEL

LB-500/750

RATINGS

MODEL

LB-1000

A. O. Smith Water Products Co., Inc. On Line

www.aosmithwaterheaters.com

For Technical Information and

Automated Fax Service,

Phone: 800-527-1953

ACG-MI002-0405N

A. O. Smith

Water Products Company

Ashland City, TN

A Division of A. O. Smith Corporation

A. O. Smith Corporation reserves the right to make product changes or improvements at any time without notice.

Printed in U.S.A.