A. O. Smith GPDH-40 User Manual

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A. O. Smith GPDH-40 User Manual

Residential Gas Water Heaters

CLOSED COMBUSTION

POWER DIRECT-VENT

SEALED SHOT® FEATURES

POWER DIRECT-VENT DESIGN

Two-pipe closed-combustion system draws all make-up air from outside the home, eliminating problems caused by insufficient indoor ventilation.

For installation versatility, system permits combined horizontal and vertical venting and air intake runs up to 45 feet (including one 90º elbow) using 3” Schedule 40 PVC, CPVC or ABS pipe.

NEW INTELLI-VENT GAS CONTROL

Equipped with nearly-indestructible silicon nitride hot surface

igniter, and advanced electronics for more precise control of waterNotemperatureLongerand easy to und standinsystemProductiondiagn stics.

6-YEAR LIMITED TANK & PARTS WARRANTY

For complete information, consult written warranty or A.O. Smith Water Products Company.

QUIET MODULAR BLOWER

Equipped with 110/120 volt electrical system (rating 3 amps or less), 7-foot cord, standard 3-prong male connector.

A.O. SMITH DYNACLEAN™ DIFFUSER DIP TUBE

Helps reduce lime and sediment buildup, maximizes hot water output.

Made from long-lasting PEX cross-link polymer.

COREGARD™ ANODE ROD

An A.O. Smith exclusive. Aluminum anode with stainless steel core protects tank against corrosion longer than ordinary mild steel anodes.

GREEN CHOICE™ GAS BURNER

Patented “eco-friendly” design reduces NOx emissions up to 33% and complies with Southern California and Texas requirements.

DURABLE TAMPER-RESISTANT BRASS DRAIN VALVE

A.O. SMITH PERMAGLAS® GLASS COATING

Protects steel tank from rust.

FACTORY-INSTALLED TEMPERATURE &

PRESSURE (T&P) RELIEF VALVE

CODE COMPLIANCE: UBC, CEC, SBCC, CABO, HUD, BOCA

NATIONAL CODES, ASHRAE/IES 90.1-1999 AND 2004 NAECA

DESIGN CERTIFIED BY CSA INTERNATIONAL

According to ANS Z21.10.1 standards governing storage-type water heaters.

www.aosmithwaterheaters.com

January, 2004

A 752.0

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