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A.O. Smith GDV Instruction Manual

Other manuals for GDV: Instruction Manual
Manual is about: A.O. Smith Residental Gas Water Heater Owner's Manual

Summary of GDV

  • Page 1

    Instruction manual 1212 part no. 321348-001 keep this manual in the pocket on heater for future reference whenever maintenance adjustment or service is required. Direct vent gas models gdv/gdvt not for use in manufactured (mobile) homes residential gas water heaters • for your safety • an odorant is...

  • Page 2: Caution

    2 your safety and the safety of others is extremely important in the installation, use and servicing of this water heater. Many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and others of a potential injury hazard. Read and obey a...

  • Page 3

    3 general safety.

  • Page 4

    4 table of contents safe installation, use and service 2 important definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . 2 general safety 3 table of contents 4 introduction 5 preparing for the installation . . . . . . . . . . . . . . . . . . . . . . 5 installation requirements for the com...

  • Page 5

    5 thank you for purchasing this water heater. Properly installed and maintained, it should give you years of trouble free service. Abbreviations found in this instruction manual: csa - canadian standards association ansi - american national standards institute nfpa - national fire protection associa...

  • Page 6

    6 installation requirements for the commonwealth of massachusetts for all side wall terminated, horizontally vented power vent, direct vent, and power direct vent gas fueled water heaters installed in every dwelling, building or structure used in whole or in part for residential purposes, including ...

  • Page 7

    7 get to know your water heater replacement parts replacement parts may be ordered through authorized servicers or distributors. When ordering parts, provide complete model and serial numbers (see rating plate), quantity and name of part desired (as listed in figure 1). Standard hardware items may b...

  • Page 8

    8 figure 2 mixing valve usage this water heater has been design certifi ed as complying with american national standard/csa standard for water heaters and is considered suitable for: water (potable) heating and space heating: all models are considered suitable for water (potable) heating and space h...

  • Page 9

    9 facts to consider about the location carefully choose an indoor location for the new water heater, because the placement is a very important consideration for the safety of the occupants in the building and for the most eco- nomical use of the appliance. This water heater is not for use in manufac...

  • Page 10

    10 insulation blankets insulation blankets available to the general public for external use on gas water heaters are not necessary with this product. The purpose of an insulation blanket is to reduce the standby heat loss encountered with storage tank water heaters. Your wa- ter heater meets or exce...

  • Page 11

    11 required ability installation or service of this water heater requires ability equivalent to that of a licensed tradesman in the field involved. Plumbing, air supply, venting and gas supply are required. Inspect shipment there may be hidden damage caused in transit. Check to be cer- tain all part...

  • Page 12

    12 hot water outlet cold water intlet drain valve discharge pipe (do not cap or plug) metal drain pan 3/4” sweat fitting union shutoff valve floor drain 3/4” sweat fitting temperature and pressure relief valve union 6” maximum air gap figure 4 figure 4 shows the typical attachment of the water pipin...

  • Page 13

    13 the temperature-pressure relief valve must be installed directly into the fi tting of the water heater designed for the relief valve. Position the valve downward and provide tubing so that any dis- charge will exit only within 6 in. Above, or at any distance below the structural fl oor. Be certai...

  • Page 14

    14 gas piping make sure the gas supplied is the same type listed on the model rating plate. The inlet gas pressure must not exceed 14 inch water column (3.5 kpa) for natural and propane gas (l.P.). The minimum inlet gas pressure shown on the rating plate is that which will permit fi ring at rated in...

  • Page 15

    15 gas piping with fl exible connector. Figure 7 gas piping with all black iron pipe to gas control. Figure 8 sediment traps a sediment trap (dirt leg) shall be installed as close to the inlet of the water heater as practical at the time of water heater installa- tion. The sediment trap (dirt leg) s...

  • Page 16

    16 ventilating air. Adequate air for combustion and ventilation must be provided for safe operation. High altitude installations installations above 7,700 ft. Require replacement of the burner orifi ce in accordance with the current edition of the national fuel gas code ansi z223.1/nfpa 54. Failure ...

  • Page 17

    17 vent connections after the location for the vent terminal has been selected as outlined in figures 3 & 15, use the following illustrations for installation: figure 12 locating clearance hole for vent cut a clearance hole, approximately 7 in. In diameter, through the exterior wall for the vent ass...

  • Page 18

    18 standard vent arrangement 2.6 in. 3.6 in. 2.1 in. Wall 17 in. Min.,* 80 in. Max. Figure 16 * if the horizontal distance is less than 30 in., the restricter plate must be installed (see figure 21). Note: the length of “unstretched” corrugated tube could cause the length of the vent run to exceed t...

  • Page 19

    19 figure 22 apply hi-temp red silicone (included) around the collar on air manifold box. Pull corrugated vent tube all the way on to collar and secure with one sheet metal screw (approx. 3/4 in. Up from edge of vent tube. Pull gear clamp past screw and tighten. Figure 23 offset vent arrangement con...

  • Page 20

    20 1. Turn the gas control/temperature knob counterclockwise to the "off" position. The status light will stop blinking and stay on for a short time after the water heater is turned off. See figure ‘a’. To turn off gas to appliance 321346-000 1. Stop! It is imperative that you read all safety warnin...

  • Page 21

    21 temperature regulation temperature adjustment valves for reducing the point-of-use temperature by mixing cold and hot water are available (see figure 2). Also available are inexpensive devices that attach to faucets to limit hot water temperatures. Contact a licensed plumber or the local plumbing...

  • Page 22

    22 external damage do not operate the water heater until it has been fully checked out by a qualifi ed technician, if the water heater: has been exposed to fi re or damage. Displays evidence of sooting. Produces steam or unusually hot water. If the water heater has been fl ooded it must be replaced....

  • Page 23

    23 operational conditions smelly water in each water heater there is installed at least one anode rod (see parts section) for corrosion protection of the tank. Certain water conditions will cause a reaction between this rod and the water. The most common complaint associated with the anode rod is on...

  • Page 24

    24 for your safety and satisfactory operation, it is recommended that this heater be checked once a year by a competent service person. Users of this water heater should be aware that gas components wear out over a period of time. The gas carrying components of this water heat- er should be inspecte...

  • Page 25: Warning

    25 soot build-up indicates a problem that requires correction before further use. Consult with a qualified service technician. Should the main burner or burner air openings require cleaning, turn the gas control knob to “off” position and allow the burner to cool. Remove the burner and clean with a ...

  • Page 26

    26 turn off the gas at the manual shut-off valve on the gas sup- ply pipe (figure 3). Drain the water heater. Refer to the section of “draining and flushing” and follow the procedure. Disconnect the igniter wire from the igniter lead wire. Use nee- dle nose pliers to disconnect the red (+) and white...

  • Page 27

    27 removing the burner from the manifold/ burner assembly natural gas (low nox) & l.P. Gas burner take off the burner by removing the two (2) screws located underneath the burner. Check the burner to see if it is dirty or clogged. The burner may be cleaned with soap and hot water (figure 24).Importa...

  • Page 28

    28 temperature & pressure relief valve at least once a year, the temperature and pressure relief valve, figure 1, must be checked to ensure that it is in operating condi- tion. Lift the lever at the top of the valve several times until the valve seats properly and operates freely. If water does not ...

  • Page 29

    29 anode rod maintenance each water heater contains at least one anode rod, which will slowly deplete (due to electrolysis) prolonging the life of the water heater by protecting the glass-lined tank from corrosion. Adverse water quality, hotter water temperatures, high hot water usage, hydronic heat...

  • Page 30

    30 service if a condition persists or you are uncertain about the operation of the water heater contact a service agency. Use this guide to check a “leaking” water heater. Many sus- pected “leakers” are not leaking tanks. Often the source of the water can be found and corrected. If you are not thoro...

  • Page 31

    31 problem possible cause(s) correction burner will not ignite pilot not lit thermostat set too low no gas dirt in the gas lines pilot line clogged main burner line clogged defective thermopile defective gas control/thermostat 1. 2. 3. 4. 5. 6. 7. 8. Light pilot turn temp. Dial to desired temperatur...

  • Page 32

    32 problem possible cause(s) correction drip from relief valve excessive water pressure heater stacking closed water system temperature setting too high 1. 2. 3. 4. Use a pressure reducing valve and relief valve lower the thermostat setting see “closed system/thermal expansion” decrease the temperat...

  • Page 33

    33 notes.

  • Page 34: Residential Gas Warranty

    34 residential gas warranty this warranty is applicable to the original owner only in accordance with the warranty terms and conditions specifi ed below. The warrantor will furnish the original owner, 1) a replacement water heater of equivalent size and cur- rent model if the glass-lined tank in thi...

  • Page 35

    35 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: a. Labor charges for service, removal, or reinstallation of the wa...

  • Page 36

    36 500 tennessee waltz parkway ashland city, tn 37015 phone: 1-800-433-2545 fax: 1-800-433-2515 www.Aosmithwaterheaters.Com / email: parts@hotwater.Com.