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nw-37 thru nw-670 electrIc hot water BoIler lIMIted warranty

A.O. Smith Corporation, the warrantor, extends the following LIMITED WARRANTY to the owner of this boiler.

1. 

THE TANK

  If the tank in this boiler shall prove upon examination by the warrantor to have leaked due to natural corrosion from water therein, during the FIRST 

year after initial installation, the warrantor will at its option, repair it or provide a replacement tank less elements and controls of equivalent size and 

then current model. Some government agencies are requiring energy efficient standards for boilers. In the event regulations prohibit sale of a model 

of equivalent size and construction, A. O. Smith will provide a model which complies with the regulations of your area, in which case the consumer will 

be charged the difference in price between the like replacement and the energy efficient model required. The warranty on the repair or replacement 

of the part, portion or tank will be limited to the unexpired term of the original warranty.

2. ALL OTHER PARTS

  If within ONE year after initial installation of this boiler, any part or portion shall prove upon examination by the warrantor to be defective in material 

or workmanship, the warrantor will repair or replace such part or portion at its option.

3. CONDITIONS AND EXPECTATIONS

  This warranty shall apply only when the boiler is installed in accordance with local plumbing and building codes, ordinances and regulations, 

the printed instructions provided with it and good industry practices.  In addition, a pressure relief valve, approved by the American Society of 

Mechanical Engineers, must have been installed.

  This warranty shall apply only when the boiler is used:

  a. (1)  at temperatures not exceeding the maximum setting of its control;

    (2)  at water pressure not exceeding the working pressure shown on the boiler;

    (3)  when filled with water, free to circulate at all times and with the tank free of damaging scale deposits;

    (4)  in a noncorrosive and non-contaminated atmosphere;

    (5)  in its original installation location;

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

    (7)  when operated free of the damaging effects of uncontrolled thermal expansion and/or water hammer.

  b. Any accident to the boiler, any misuse, abuse (including freezing) or alteration of it, any operation of it in a modified form will void this warranty.

4. SERVICE AND REPAIR EXPENSE

  Under this limited warranty the warrantor will provide only repair or a replacement tank or part thereof. The owner is responsible for all other costs. 

Such costs may include but are not limited to:

  a. Labor charges for service, removal, repair, or reinstallation of the tank or any component part;

  b. Shipping,  delivery,  handling,  and  administrative  charges  for  forwarding  the  new  tank  or  replacement  part  from  the  nearest  distributor  and 

returning the claimed defective tank or part to such distributor.

  c. All cost necessary or incidental for any materials and/or permits required for installation of the replacement tank or part.

5. LIMITATION ON IMPLIED WARRANTIES

  Implied warranties, including any warranty of merchantability imposed on the sale of this boiler under state law are limited to one (1) year duration for 

the tank or any of its parts.  Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.

6. CLAIM PROCEDURE

  Any claim under this warranty should be initiated with the dealer who sold the boiler, or with any other dealer handling the warrantor’s products.  If 

this is not practicable, the owner should contact:

 

U.S. Customers 

Canadian Customers

 

A. O. Smith Corporation 

A. O. Smith Enterprises Ltd.

 

500 Tennessee Waltz Parkway 

599 Hill St. W.

 

Ashland City, TN 37015 

Fergus, ON  N1M 2X1

 

Telephone: 800-527-1953 

Attn: Warranty

 

 

Telephone: 888-479-9283

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

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

7. DISCLAIMER

  NO OTHER EXPRESS WARRANTY HAS BEEN OR WILL BE MADE IN BEHALF OF THE WARRANTOR WITH RESPECT TO THE BOILER OR 

THE INSTALLATION, OPERATION, REPAIR OR REPLACEMENT OF THE TANK 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.

  a. Some states do not allow the exclusion or limitation of the incidental or consequential damage, so the above limitation or exclusion may not apply 

to you.

  b. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

Fill in the following for your own reference. Keep it. Registration is not a condition of warranty. The model and ASME numbers are found on the boiler’s rating plate.

Model No.  ________________________________________________ ASME No. _______________________Date Installed _________________

Dealer’s Name

 _________________________________________________________________________________________________________

Dealer’s Address

 ___________________________________________________________________________Phone No. ___________________

City and State _____________________________________________________________________________Zip _________________________

KEEP  THIS  WARRANTY  AND  MANUAL  POSTED  ADJACENT  TO  THE  BOILER  FOR  FUTURE  REFERENCE  WHENEVER  MAINTENANCE, 

ADJUSTMENT OR SERVICE IS REQUIRED.  BE SURE YOUR DEALER HAS FILLED IN THIS WARRANTY.

Содержание NW 37-670

Страница 1: ...ep for future reference COMMERCIAL ELECTRIC BOILERS Thank you for buying this energy efficient boiler from us We appreciate your confidence in our products MODELS NW 37 670 INSTALLATION OPERATION SERV...

Страница 2: ...the type of hazard what can happen if you do not follow the safety message and how to avoid the risk of injury The California Safe Drinking Water and Toxic Enforcement Act requires the Governor of Ca...

Страница 3: ...ay also cause erratic control system operation on ELECTRONIC CONTROL models This boiler must be connected to a grounded metal permanent wiring system or an equipment grounding conductor must be run wi...

Страница 4: ...hen standing in water When replacing fuses always use the correct size for the circuit See page 12 through 14 The principal components of the heater are identified on page 8 The model and rating plate...

Страница 5: ...4 4 4 3 3 3 3 1 1 1 1 NW NW NW NW NW 96 96 96 96 96 330K 390K 420K 450K 480K 36 36 36 36 36 38 38 38 38 38 16 16 16 16 16 69 1 2 69 1 2 69 1 2 69 1 2 69 1 2 17 17 17 17 17 1 1 2 1 1 2 1 1 2 1 1 2 1 1...

Страница 6: ...1800K 1860K 1980K 2100K 66 66 66 66 56 56 56 56 28 28 28 28 90 1 2 90 1 2 90 1 2 90 1 2 25 1 2 25 1 2 25 1 2 25 1 2 2 1 2 2 1 2 2 1 2 2 1 2 30 30 30 30 33 33 33 33 7 3 4 7 3 4 7 3 4 7 3 4 8 8 8 8 2 2...

Страница 7: ...60 2 90 4 90 6 60 1501 1668 1299 1443 648 720 792 864 542 602 663 723 NW NW NW NW NW NW NW 220 220 220 220 220 220 220 780K 840K 900K 960K 1020K 1080K 1140K 2 662 140 2 866 920 3 071 700 3 276 480 3 4...

Страница 8: ...8 FEATURES AND COMPONENTS ACTUAL CONFIGURATION MAY VARY...

Страница 9: ...the area adjacent to the boiler or to lower floors of the structure 3 The discharge opening of the temperature and pressure relief valve should always be piped to an open drain 4 Close to the point o...

Страница 10: ...ut being certain the boiler is filled with water and a properly sized pressure relief valve is installed in the relief valve opening provided The pressure rating of the relief valve should be equal to...

Страница 11: ...ng increase in water pressure due to thermal expansion Thermal expansion can cause premature tank failure leakage This type of failure is not covered under the limited warranty Thermal expansion can a...

Страница 12: ...th this computation the next higher standard rating or setting should be selected Boiler Circuits The boiler s electrical components are pictured and identified on page 8 The model and rating plate il...

Страница 13: ...TH THERMOSTAT NOTE S 1 IF A MANUAL RESET HLMT IS USED THE SECOND AUTO RESET HLMT SWITCH IS NOT USED STD WIRING OPTIONAL OR FIELD WIRING AS REQ D NOTE S 1 IF A MANUAL RESET HLMT IS USED THE SECOND AUTO...

Страница 14: ...ON LIGHT 1 OFF ON 2200 2 OFF ON 135 3 OFF ON 4 20MA 4 OFF ON 0 10VDC 5 DS PROP 6 PROG UN 7 OFF VER 8 SEC MN 1 DELAY 1 2 DELAY 2 3 DELAY 3 4 1 5 2 6 4 7 5 8 16 THE ABOVE DIP SWITCH SETTINGS ARE AN EXAM...

Страница 15: ...y be in the control circuit in addition to the automatic high limit previously described The control has an adjustable range of 110 F to 290 F and activates and locks on a temperature increase When th...

Страница 16: ...proximate time to burn relationship for normal adult skin Water Temperature Time to Produce 2nd 3rd Degree Burns on Adult Skin 180 F 82 C 160 F 82 C 150 F 82 C 140 F 82 C 130 F 82 C 120 F 82 C 80 F 82...

Страница 17: ...dential pipe dope thread cutting oil solder flux dirt and other foreign materials breakdown to form gas This is indicated by a continuing need for purging even through the system is closed 2 Pump seal...

Страница 18: ...switch serving the boiler is in the ON position The pilot switch es on the cabinet front should be on In some installations the boiler electrical service may be limited by the power company or boiler...

Страница 19: ...ges for forwarding the new tank or replacement part from the nearest distributor and returning the claimed defective tank or part to such distributor c All cost necessary or incidental for any materia...

Страница 20: ...A DIVISION OF A O SMITH CORPORATION RENTON WASHINGTON Technical Support 800 527 1953 Parts Department 800 433 2515 www hotwater com...

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