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THIS WARRANTY IS APPLICABLE TO THE ORIGINAL OWNER ONLY.  If
the glass lined tank in this water heater shall prove upon examination by
A. O. Smith Corporation (the warrantor) to have leaked during the
warranty period in normal residential use, due to natural corrosion from
potable water therein, the warrantor will furnish the ORIGINAL OWNER
a replacement A. O. Smith water heater of equivalent size and current
model, or a replacement thermostat or thermocouple which fails in normal
use, in accordance with the warranty terms and conditions specified
below.  THE A. O. SMITH REPLACEMENT MODEL OR PART WILL BE
WARRANTED FOR ONLY THE UNEXPIRED PORTION OF THE ORIGINAL
WARRANTY.  The warranty period will be determined by the original
installation date of the water heater.  PROOF-OF-PURCHASE AND PROOF-
OF-INSTALLATION ARE NECESSARY TO VALIDATE THIS WARRANTY.
This warranty is not transferable and applies to models listed in Table 1.

TABLE 1

WARRANTY PERIOD

MODELS

TANK

1

PARTS 

2

GPDH / GPDT / GPDX

6 YEARS

6 YEARS

When the water heater has been used for other than single family
residential application:  1. The tank warranty shall be reduced to 3 years
for 10 year models, and 1 year for 6 year models.  2.  The parts warranty
shall be reduced to one year for all models. Returned parts which meet
any of the following conditions are not covered by this warranty: 1)
Improper installation or removal,  2) damaged by other than normal wear,
3) replaced for cosmetic purposes, or 4) returned with defaced date
codes.

CONDITIONS AND EXCEPTIONS

This warranty shall apply only when the water heater is installed and
operated in accordance with 1) all local fire codes and plumbing codes,
ordinances and regulations, 2) the printed instructions provided with it,
3) good industry practices, and 4) proper safety practices such as but
not limited to a properly sized drain pan if installed in an area where
leakage from connections of the tank would result in damage to the area
adjacent to the heater.  In addition, a new temperature and pressure
relief valve, certified by the American Gas Association must have been
properly installed and piped to the nearest drain.

This warranty shall apply only when the heater is:

owned by the original purchaser;

used at temperatures not exceeding the maximum calibrated setting
of its thermostat;

not subjected to excessive water pressure fluctuations and not
subject to an operating pressure greater than 150 P.S.I.;

filled with potable water, free to circulate at all times and with the tank
free of damaging water sediment or scale deposits;

used in a non-corrosive and non-contaminated atmosphere;

used with factory approved anode(s) installed;

in its original installation location;

in the United States, its territories or possessions, and Canada;

sized in accordance with proper sizing techniques for residential
water heaters;

bearing a rating plate which has not been altered, defaced or removed
except as required by the warrantor;

not used in a closed system without a properly sized and installed
thermal expansion tank;

fired at the factory rated input using the fuel stated on the face of the
rating plate;

operated with the inner and outer combustion chamber doors in place;

maintained in accordance with the instructions printed in the manual
included with the heater.

Any accident to the water heater or any part thereof (including freezing,
fire, floods, or lightning), any misuse, abuse or alteration of it, any
operation of it in a modified form, or any attempt to repair tank leaks or
parts, will void this warranty.

SERVICE AND LABOR RESPONSIBILITY

UNDER THIS LIMITED WARRANTY, THE WARRANTOR WILL PROVIDE
ONLY A REPLACEMENT WATER HEATER OR PART THEREOF.   THE
OWNER IS RESPONSIBLE FOR ALL OTHER COSTS.  Such costs may
include but are not limited to:

LIMITED RESIDENTIAL GAS WARRANTY

a.

Labor charges for service, removal, or reinstallation of the water
heater or part thereof.

b.

Shipping and delivery charges for forwarding the new water heater
or replacement part from the nearest distributor and returning the
claimed defective heater or part to such distributor except in the
state of California where such charges are the manufacturer’s
responsibility.

c.

All cost necessary or incidental for handling and administrative
charges, and for any materials and/or permits required for installation
of the replacement heater or part.

LIMITATION ON IMPLIED WARRANTIES

Implied warranties, including any warranty of merchantability imposed on
the sale of this heater under state law are limited to one year duration for the
heater or any of its parts.  Some states do not allow limitations on how long an
implied warranty lasts, so the above limitations may not apply to you.

CLAIM PROCEDURE

Any claim under this warranty should be initiated with the dealer who
sold the heater, or with any other dealer handling the warrantor’s
products.  If this is not practical, the owner should contact: A. O. Smith
Water Products Company, 125 Southeast Parkway, Franklin, TN, 37068
(800) 323-2636.  Canadian customers should contact A. O. Smith
Enterprises, Ltd., P.O. Box 310-768 Erie Street, Stratford, Ontario N5A
6T3 (519) 271-5800.

The warrantor will only honor replacement with identical or similar water
heater or parts thereof which are manufactured or distributed by the warrantor.

Dealer replacements are made subject to in-warranty validation by warrantor.

PROOF-OF-PURCHASE AND PROOF-OF-INSTALLATION DATES ARE
REQUIRED TO SUPPORT WARRANTY FOR CLAIM FROM ORIGINAL
OWNER.  THIS FORM DOES NOT CONSTITUTE PROOF-OF-PURCHASE
OR PROOF-OF-INSTALLATION.

DISCLAIMERS

NO EXPRESS WARRANTY HAS BEEN OR WILL BE MADE IN BEHALF OF
THE WARRANTOR WITH RESPECT TO THE MERCHANTABILITY OF THE
HEATER OR THE INSTALLATION, OPERATION, REPAIR OR REPLACEMENT
OF THE HEATER OR PARTS.  THE WARRANTOR SHALL NOT BE
RESPONSIBLE FOR WATER DAMAGE, LOSS OF USE OF THE UNIT,
INCONVENIENCE, LOSS OR DAMAGE TO PERSONAL PROPERTY, OR
OTHER CONSEQUENTIAL DAMAGE.  THE WARRANTOR SHALL NOT BE
LIABLE BY VIRTUE OF THIS WARRANTY OR OTHERWISE FOR DAMAGE
TO ANY PERSONS OR PROPERTY, WHETHER DIRECT OR INDIRECT,
AND WHETHER ARISING IN CONTRACT OR IN TORT.

Some states do not allow the limitation or exclusion of incidental or
consequential damages, so the above limitation or exclusion may not
apply to you.

This warranty gives you specific legal rights, and you may also have
other rights which vary from state to state. Should governmental regulations
or industry standards prohibit the Manufacturer from furnishing a
comparable model replacement under this warranty, the Owner will be
furnished with the closest comparable water heater meeting the then
current governmental regulations and industry standards. A supplementary
fee may be assessed to cover the additional cost associated with the
changes made to meet applicable regulations and standards.

IMPORTANT INFORMATION

Model Number____________________________________________

Serial Number_____________________________________________

Installation Information______________________________________

Date Installed_____________________________________________

Company’s Name__________________________________________

Street or P.O. Box _________________________________________

City, State, and Zip Code____________________________________

Phone Number ___________________________________________

Plumber’s Name__________________________________________

Summary of Contents for GPDH

Page 1: ...er heater from A O Smith Water Products Company We appreciate your confidence in our products You should thoroughly read this manual before installation and or operation of this water heater Please pay particular attention to the important safety and operating instructions as well as the WARNINGS and CAUTIONS ADIVISION OFA O SMITH CORPORATION www aosmithwaterheaters com GET TO KNOWYOUR WATER HEATE...

Page 2: ...CONTROL HARNESS AND INSIDE JACKET GAS MODEL GPDH GPDT GPDX WITH HOT SURFACE IGNITION CERTAIN MODELS ARE EQUIPPED WITH SIDE PLUMBING CONNECTIONS FOR SPACE HEATING HOT AND COLD FITTING ASSEMBLIES PART NO 900126 2 TEMPERATURE INDICATORS TEMPERATURE ADJUSTMENT BUTTONS TYPICALNATURALGAS PILOT MAIN BURNER HOT SURFACE IGNITION ASSEMBLY Replacement parts and recommended delimer may be ordered through auth...

Page 3: ...aking an insulation blanket unnecessary WARNING Should you choose to apply an insulation blanket to this heater you should follow these instructions see Figure 1 for identification of components mentioned below Failure to follow these instructions can restrict the air flow required for proper combustion potentially resulting in fire asphyxiation serious personal injury or death Do not cover the ou...

Page 4: ...THE HEATER OR TO LOWER FLOORS OF THE STRUCTURE When such locations cannot be avoided a suitable drain pan should be installed under the heater see Figure 1 The pan should have a minimum length and width of at least 2 inches 51mm greater than the diameter of the heater and should be piped to an adequate drain Drain pans suitable for these heaters are available from your dealer or A O Smith Water Pr...

Page 5: ...UT OFF VALVE FROM THE GAS SUPPLY PIPING SYSTEM DURING ANY SUPPLY PRESSURE TESTING EXCEEDING 1 2 PSI 3 5 kPa GAS SUPPLY LINE MUST BE CAPPED WHEN DISCONNECTEDFROMTHEHEATER FORTESTPRESSURESAT 1 2 PSI 3 5 kPa OR LESS THE APPLIANCE NEED NOT BE DISCONNECTED BUT MUST BE ISOLATED FROM THE SUPPLY PRESSURETESTBYCLOSINGTHE MAIN MANUALGAS VALVE BEFORE PLACING THE HEATER IN OPERATION CHECK FOR GAS LEAKAGE USE ...

Page 6: ...ve any door window or gravity air inlet into the building see Figure 4 The Power Direct Vent outlet terminal of over 50 000 BtuH input models shall terminate at least 12 30 5 cm below 12 30 5 cm horizontally from or 12 30 5 cm above any door window or gravity air inlet into the building see Figure 4 18 45 7 cm minimum from other natural draft gravity direct vent power vent or power direct vent app...

Page 7: ...pported at 3 1 2 foot 8 9 cm intervals and vertical runs supported at 5 foot 1 5 cm intervals VENTING THROUGH AN OUTSIDE WALL A ALL 75 GAL 283 9L 65 000 70 000 BTU HR MODELS 50 GAL 189 3L 60 000 65 000BTU HRMODELS SEE FIGURE 10 In the carton is supplied 1 Two 3 inlet and outlet PVC Schedule 40 45 vent caps 2 A 3 ABS Schedule 40 90 street elbow used to connect the outlet vent pipe to the water heat...

Page 8: ... vent piping cannot under any circumstances be run downhill FIGURE 12 The vent piping can be installed as follows 1 Horizontal runs require a minimum1 8 3 2mm rise per 5 1 52 m FIGURE 13 FIGURE 14 FIGURE 15 2 The total vertical and horizontal vent runs cannot exceed the maximum length with the number of 90 elbows as specified in the table below If more elbows are required the venting distance must...

Page 9: ...mer cleaner 4 Apply a thin coat of cement to fitting avoiding puddling inside 5 Apply a liberal coat of cement to pipe leaving no voids 6 QUICKLY assemble parts while cement is fluid If you wait too long re coat pipes 7 Push pipe completely into socket of fitting turning as it goes until it bottoms 8 Hold pipe and fitting together for 30 seconds Then carefully clean off excess with a cloth Allow c...

Page 10: ...al 189 3 L Hi BTU input all 75 Gal 283 9 L Models only is supplied on certain models only More may be required and must be supplied locally 1 The water heater requires its own separate venting system 2 Only 3 ABS Schedule 40 piping and fittings are acceptable materials on the first 5 1 52 m of the outlet vent system for some 50 Gal 189 3 L and 75 Gal 283 9 L models 3 3 PVC ABS or CPVC Schedule 40 ...

Page 11: ...secure with screws FIGURE 24 SCHEMATIC DIAGRAMS FIGURE 25 WARNING DISCONNECT FROM ELECTRICAL SUPPLY BEFORE SERVICING UNIT REPLACE ALL DOORS AND PANELS BEFORE OPERATING HEATER IF ANY OF THE ORIGINAL WIRES SUPPLIED WITH THE APPLIANCE MUST BE REPLACED IT MUST BE REPLACED WITH APPLIANCE WIRE MATERIAL WITH MINIMUM TEMPERATURE RATING OF 105 C AND A MINIMUM SIZE OF NO 18 AWG FIGURE 26 T P VALVE AND PIPE ...

Page 12: ...cond Then press the COOLER button until the WARM indicator light appears BEFORE OPERATING ENTIRE SYSTEM MUST BE FILLED WITH WATERANDAIR PURGED FROMALL LINES 1 STOP Read the safety information above on this label 2 Set the ON OFF switch on the control box to the ON position 3 Set the thermostat to the lowest setting by first pressing the COOLER and HOTTER buttons together and holding for 1 second T...

Page 13: ...G OF GAS VALVE WILL REDUCE THE RISK OF SCALDS Some states require settings at specific lower temperatures Figure 28 shows the approximate water temperatures produced at various thermostat dial settings Short repeated heating cycles caused by small hot water uses can cause temperatures at the point of use to exceed the thermostat setting by up to 30 F 1 C If you experience this type of use you shou...

Page 14: ...onds Flame Recognition Period 1 second Ignition Trial 4 seconds Interpurge 5 seconds Post purge 5 seconds Retries 2 Reset from Lockout 1 hr Flame Sensing Nominal HSI Off Run Mode 4 0µ DC HIGH ALTITUDE INSTALLATION WARNING INSTALLATIONS ABOVE 2000 610 m FEET REQUIRE REPLACEMENT OF THE BURNER ORIFICE IN ACCORDANCE WITH THE NATIONAL FUEL GAS CODE ANSIZ223 1 NFPA54 FAILURE TOREPLACETHEORIFICEWILLRESUL...

Page 15: ...ING OUT OF THE VALVE DURING THIS CHECKING OPERATION MAY BE EXTREMELY HOT AVOID CONTACT AND DISCHARGE SAFELY TO PREVENT WATER DAMAGE DRAINING If the heater is to be shut off and exposed to freezing temperatures it must be drained Water if left in the tank and allowed to freeze will damage the heater Turn off the gas and cold water inlet valve to the heater Open a nearby hot water faucet and the hea...

Page 16: ...ontact your dealer or theA O Smith authorized service agent in your area and explain to them why you are not satisfied This will usually correct the problem If after working with your dealer or service agent the problem has not been resolved to your satisfaction please let us know by either writing to us at A O Smith Water Products Company Service Department 106 Adkisson St Ashland City TN 37015 o...

Page 17: ...s correct and secure 2 Replace hot surface igniter System in lockout 1 Gas supply is off or too low to operate 2 Hot surface igniter not positioned correctly 3 Low voltage to the water heater 4 Electric polarity to unit is incorrect test and correct Problem in the gas valve driver circuit 1 Turn power to the water heater off for 10 seconds and the back on 2 Replace gas control valve Problem with t...

Page 18: ...ice A Dirt in burner ports Turn off heater and gas clean burner head B Combustion air path restricted Check intake venting arrangements for YELLOWFLAME obstructions C Not enough dilution air for proper Check Intake venting arrangement for combustion obstructions A Water on the floor under heater See CONDENSATION section CONDENSATION B Water dripping from pan Provide drip TEE to catch condensation ...

Page 19: ...IBILITY UNDER THIS LIMITED WARRANTY THE WARRANTOR WILLPROVIDE ONLY A REPLACEMENT WATER HEATER OR PART THEREOF THE OWNER IS RESPONSIBLE FOR ALL OTHER COSTS Such costs may include but are not limited to LIMITED RESIDENTIAL GAS WARRANTY a Labor charges for service removal or reinstallation of the water heater or part thereof b Shipping and delivery charges for forwarding the new water heater or repla...

Page 20: ...20 125 SOUTHEAST PARKWAY FRANKLIN TN 37068 Phone 1 800 433 2545 Fax 1 800 433 2515 www aosmithwaterheaters com email parts hotwater com ...

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