A.O. Smith ATMOSPHERIC VENTED WATER HEATER Installation And Operating Instructions Manual

Manual is about: ATMOSPHERIC VENTED WATER HEATER

Summary of ATMOSPHERIC VENTED WATER HEATER

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    Part no. 320221-000 rev 00 (12-05) warning: if the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, per- sonal injury or death. Warning: improper installation, adjustment, alter- ation, service, or maintenance can cause injury or prop...

  • Page 2

    – 2 – table of contents i) introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 user responsibilities 3 ii) safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 for installations in canada 3 for installations in the united states 3 safety warning (flammable vap...

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    I) introduction we thank you for choosing a flammable vapour resistant water heater. Your satisfaction with this product is very important to us. This gas-fired water heater has been developed to produce domestic hot water and may also be used in combination with space heating applications. The flam...

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    Safety warning (flammable vapours) there is a risk in using fuel-burning appliances such as water heaters. Areas that may not be suitable for water heater installation include those where flammable liquids, gasoline, solvents, adhesives, etc., or engine-driven equip- ment or vehicles are stored, ope...

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    Iii) installation unpacking the water heater important: do not remove any permanent instructions, labels or the rating plate from the outside of the water heater or on the inside of panels. 1. Move the water heater to the location of installation before removing the exterior packaging. 2. Remove ext...

  • Page 6

    Shield (see figure 2). This shield reflects heat from the high-input heaters to prevent damage to combustible floors. The shield is held in place by three (3) tabs that rest on the inside of the legs of the water heater. Ensure the shield is positioned horizontally (parallel to the bottom of the hea...

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    Rated manifold pressure. In. W.C. (kpa) min. Manifold pressure. In. W.C. (kpa) max. Manifold pressure. In. W.C. (kpa) 10 (2.48) 9.2 (2.28) 10.2 (2.53) 5 (1.24) 4.5 (1.11) 5.1 (1.26) 4 (0.99) 3.6 (0.89) 4.4 (1.09) gas pressure gsw water heating company recommends that the gas supply pressure, as meas...

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    Air requirements important: air for combustion and ventilation must not come from a corrosive atmosphere. Any failure due to cor- rosive elements in the atmosphere is excluded from war- ranty coverage. Installations in or for certain places including, but not limited to, those listed below will requ...

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    Confined space air requirements for u.S. Installations refer to figure 6 (a), (b), (c) or (d) for proper sizing and location of combustion air ducts and openings. Check local codes. (a) equipment located in confined spaces; all air from inside the building. Two permanent openings shall be provided c...

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    Exhaust venting vent pipe system this water heater is a category 1, non-direct vented appli- ance. The vent pipe must be sized and installed in accor- dance with all local and provincial or state codes and with the latest edition of “natural gas and propane installation code” can/csa-b149.1 in canad...

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    The installation drawing (figure 10). If the indoor installation area is subject to freezing temperatures, the water piping must be protected by insulation. Water supply pressure should not exceed 550 kpa (80psi). If this occurs a pressure reducing valve and/or an expansion tank may be required. The...

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    Check valve. This will create a closed water system. During the heating cycle of the water heater, the water expands causing pressure inside the water heater to increase. This may cause the temperature and pressure relief valve to dis- charge small quantities of hot water. To prevent this from happe...

  • Page 13

    Wrap-around filter installation important: a wrap-around filter has been included with the water heater. For correct operation it is essential that this fil- ter be installed properly. If you encounter difficulty installing the filter or have a question, please call your qualified serv- ice technici...

  • Page 14

    Electrical supply 24 volt control precautions (applies to honeywell control equipped heaters only). Important: the electrical controls used inside the gas con- trol/thermostat of this water heater are polarity sensitive . Ensure the electrical supply is connected correctly in the receptacle box. Fai...

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    Installations check iv) operating instructions water temperature regulation hot water can scald: water heaters are intended to produce hot water. Water heated to a temperature that will satisfy space heating, clothes washing, dish washing, and other sanitizing needs can scald and permanently injure ...

  • Page 16

    Temperature adjustment the thermostat of this water heater has been factory set at its lowest position. It is adjustable and must be set to the desired temperature setting. The preferred starting point is 49°c (120°f). Turn the water temperature dial clockwise to decrease the temperature, or counter...

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    Lighting instructions (white-rodgers 37c) – 17 – 1. Réglez le thermostat à la température la plus basse (allumage de la veilleuse). 2. Appuyez sur le bouton de commande du gaz et faites-le tourner dans le sens horaire jusqu'à "off". Ne le forcez pas. 1. Set thermostat to the lowest setting (pilot li...

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    Lighting instructions (honeywell 24 volt) 1. Réglez le thermostat à sa plus basse valeur (sens antihoraire). 2. Réglez le sélecteur du régulateur du gaz à la position “off”. Couper l’alimentation en gaz de l’appareil 1. Turn the thermostat counter-clockwise to the lowest setting. 2. Set the gas cont...

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    V) operation burner flames inspect the burner flames through the viewport and com- pare them to the drawings in figure 20. A properly operat- ing burner should produce a soft blue flame. Blue tips with yellow inner cones are satisfactory. The tips of the flame may have a slight yellow tint. The flam...

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    Water heater sounds during the normal operation of the water heater, sounds or noises may be heard. These noises are common and may result from the following: • normal expansion and contraction of metal parts during the periods of heat-up and cool-down. • condensation causing sizzling and popping wi...

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    Water heater operation (24 volt only) thermostat calls for heat within 15 seconds: • vent damper rotates to open position • vent damper opening is confirmed and an electrical signal is sent to the ignition system in the controller within 30 seconds: • ignition system is powered and • lights the pilo...

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    Vi) maintenance the installation and maintenance of the water heater must comply with all of the instructions described in sections i to ix of this manual. Water heater failure that is a result of the heating system is not covered by warranty. Periodic cleaning of the wrap-around filter 1. If inspec...

  • Page 23

    Temperature and pressure relief valve manually operate the temperature and pressure relief valve at least once a year to make sure it is working properly. To prevent water damage, the valve must be properly connect- ed to a discharge line which terminates at an adequate drain. Standing clear of the ...

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    24 volt honeywell control service some heaters covered by this manual come equipped with a 24 volt vent damper and a modular honeywell gas control. Both the electronic control module and the valve module of this control may be changed without the need to disconnect the threaded control fitting from ...

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    Temperature sensor and cable replacement do not remove the entire gas control assembly from the water heater. To remove the temperature sensor and cable: 1. Remove the electronic control module as outlined above. Note: when removing the control module from the gas con- trol assembly, care is require...

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    Vii) combo heating this section serves as a guide for the installation and use of “combo” heating systems utilizing a domestic water heater which has been specifically approved for such use (see figure 32). It is written for those knowledgeable in the required trades and professionals involved in th...

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    Viii) troubleshooting guide note: troubleshooting must be done by qualified service personnel familiar with the start up and check out procedure. Note: the latest version of the installation and operating instructions manual can be found at www.Johnwoodwater- heaters.Com – 27 – problem possible caus...

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    – 28 – problem possible cause(s) correction combustion odours 1. Insufficient secondary air 2. Flue clogged 3. Heater installed in a confined area 1. Provide ventilation to water heater. Check flue way, flue baffle, burner 2. Clean, locate source and correct 3. Provide fresh air ventilation smoking ...

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    – 29 – 1. Nipple-hot outlet 2. Nipple-cold inlet 3. Drafthood 4. Temperature & pressure relief valve 5. Reducer ring 6. Anode 7. Dip tube 8. Flue baffle 9. Drain valve 10. Burner/manifold assembly 11. Gas control/thermostat 12. Outer door 13. Igniter 14. Tco switch 15. Flexible manifold tube 16. Hea...

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    – 30 – 14. Tco switch 15. Flexible manifold tube 17. Pilot assembly 18. Viewport 19. Two piece grommet with clip 20. Manifold door 21. Gas manifold 22. Pilot tube 23. Gas orifice 24. Manifold door gasket 25. Burner figure 37 manifold/door assembly (24v) 25 14 17 18 19 20 22 23 24 14. Tco switch 15. ...

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    – 31 – this page intentionally left blank. May be used for notes or to record other installation information..

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    599 hill street west fergus, on canada n1m 2x1 phone: 1-888-479-8324 www.Hotwatercanada.Ca / email: techsupport@hotwater.Com.