A. O. Smith GDVH-40 User Manual

SURE SHOT®FEATURES

DIRECT-VENT DESIGN

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

Horizontal air intake and venting on most models up to 4 feet from outside wall, with no electrical power needed.

6-YEAR LIMITED TANK & PARTS WARRANTY

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

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

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.

Residential Gas Water Heaters

GLASS COATING

DIRECT-VENT

www.hotwater.com

October 2006

ARGSS02306

RESIDENTIAL

CENTER

OF FLUE 3˝

1/2˝ GAS CONNECTION

B A

Gas Water Heaters

DIRECT-VENT

MODEL

NUMBER

GDVS-40 68 .59 40 36,000 36 16 63-3/4 48-3/4 21 14-5/8 8 42 3 in 6 181

GDVH-40 71 .59 40 40,000 40 16 63-3/4 48-3/4 21 14-5/8 8 42 3 in 6 195

GDVS-50 77 .58 50 38,000 38 16 72-1/2 57-1/2 21 14-5/8 8 50-3/4 3 in 6 209

GDVH-50 87 .58 50 48,000 49 16 76 61 21 14-5/8 8 54-1/4 3 in 6 241

GDVH-75 109 .53 75 55,000 52 16 76-1/2 61-1/2 26-1/4 14-5/8 8 54-3/4 3 in 6 300

Recovery capacities based on actual performance tests. Propane input on GDVH-50: 44,000. GDVH-75 not available in propane. * Dual-channel system has 3˝ vent pipe inside 6˝ air intake pipe. ** R Value shown is “performance rated.”

Sure Shot®Direct-Vent Water Heaters are shipped with Standard Vent Kit #9000687, which allows for horizontal vent extension (back of water heater to inside wall plus wall thickness) up to 10˝ on 40- and 50-gallon models, and up to 7-3/8˝ on the 75-gallon model. Standard Vent Kit #9000687 adds 15˝ to the total height of the installation (floor to top of vent pipe).

Optional Vent Extension Kits (#9001246, #9001247 and #9001248) can be ordered for use when longer horizontal vent extension or higher vertical vent extension are required, as shown in the chart below.

VENT KIT

NUMBER

STANDARD:

9000687

OPTIONAL:

9001246

OPTIONAL:

9001247

OPTIONAL:

9001248

FIRST HOUR

RATING

GALLONS

15-1/2 26-1/2 12-7/8 23-7/8 77-1/2 88-1/2 89-3/4 100-3/4 86-1/4 97-1/4 91-1/4 102-1/4

26-1/2 48 23-7/8 45-3/8 88-1/2 110 100-3/4 122-1/4 97-1/4 118-3/4 102-1/4 124-1/4

ENERGY FACTOR

HORIZONTAL VENT EXTENSION

Back of heater to inside wall,

plus wall thickness when used

with these water heaters.

40- and

50-GALLON

MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX.

3-1/2 10 7/8 7-3/8 63-3/4 - 76 - 72-1/2 - 76-1/2 -

10 15-1/2 7-3/8 12-7/8 72 77-1/2 84-1/4 89-3/4 80-3/4 86-1/4 86-1/4 91-1/4

GAL. CAP.

75-GALLON

BTU

INPUT

PER HOUR

NATURAL

GDVS-40 GDVH-40

RECOVERY

90ºF RISE

GALLONS

PER HOUR

VALUE**

VERTICAL VENT EXTENSION

From floor to top of vent pipe when

used with these water heaters.

GDVH-50 GDVS-50 GDVH-75

DIMENSIONS IN INCHES

A B C D E F

VENT

OUTLET*

APPROX.

SHIPPING

WEIGHT

(LBS)

If SMR “S99” is ordered, the vent kit will ship prior to the water heater. One of the vent kits below must be ordered at the same time as the heater.

Complete Vent Kit Includes Extension Kit Termination Cap

9003612 9000687 (Standard) Aluminum 9003613 9001246 Aluminum 9003614 9001247 Aluminum 9003615 9001248 Aluminum

500 Tennessee Waltz Parkway Ashland City, TN 37015

www.hotwater.com

For Technical Information and Automated Fax Service, call 800-527-1953.

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

ARGSS02306