A.O. Smith GDVH manual

1 Thank you for buying this energy efficient water heater from A.O. Smith Water Product s Comp any . We appreciate your confidence in our products. Y ou should thoroughly read this manual before inst allation and/or operation of this water heater . Please pay particular attention to the important safety and operating instructions as well as the WAR[...]

2 CERT AIN MODELS ARE EQUIPPED WITH SIDE PLUMBING CONNECTIONS FOR SP ACE HEA TING . THE HOT AND COLD FITTING ASSEMBLIES (P ART #900126-2) CAN BE ORDERED THROUGH THE MANUFACTURER. REPLACEMENT P ARTS Replacement parts may be ordered through authorized servicers or distributors. Refer to the Y ellow Pages for where to call or cont act A. O. Smith W at[...]

3 GENERAL SAFETY INFORMA TION EXTERNAL DAMAGE Do not operate the water heater until it has been fully checked out by a qualified technician, if the water heater: • Has been exposed to fire or damage. • Displays evidence of sooting. • Produces steam or unusually hot water . If the water heater has been flooded it must be replaced. CHEMICAL V A[...]

4 inches 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 Product s Compan y , 500 T ennessee Waltz Parkway , Ashland City , TN 37055. Cont act us at our website: www .aosmithwaterheaters.com,phone: 800.433.2545, or fax: 1.800.[...]

5 Make sure that the outside vents on the supply regulators and the safety vent valves are protected against blockage. These are part s of the gas supply system not the heater. V ent blockage may occur during ice storms. IT IS IMPOR T ANT T O GUARD AGAINST CONTROL FOULING FROM CONT AMINANTS IN THE GAS W A YS. SUCH FOULING MA Y CAUSE IMPROPER OPERA [...]

6 FIGURE 4 W ARNING V ent termination must not be within 4 feet of any items such as gas meters, gas valves or other gas regulating equipment. OPTIONAL WIRE GRILL When the water heater vent cap is low enough to be touched accident ally , or is accessible to small children, inst allation of a protective vent cover is recommended. Some local codes ma[...]

7 FLUE EXTENSIONS There are three optional extension kits available. Any combination of the three kit s can be chosen; however , only one kit can be used vertically and/or horizont ally , see Figures 10 and 1 1. W ARNING At no time can more than one V ertical and/or one Horizontal V ent Kit be used. Unless otherwise specified at the time of orderin[...]

8 VERTICAL (EXTENSION KIT) HEIGHT It is simple to determine which kit is needed for vertical height. T ake the total height (to the top of the flue) required and comparing that to “F DIMENSION” in T ABLE 1, it can be determined which kit needs to be used vertically . W ARNING Obstructions and deteriorated vent systems may present serious health[...]

9 W A TER HEA TER A TTITUDE There is a certain amount of variation permissible with regard to the direction the water heater faces. S tanding in front of the water heater (gas control facing you), set the 3” diameter elbow (slotted end) on the flue. This will give you a better understanding of the relation of the vent assembly to the opening in t[...]

10 8. Slide the vent collar (to be installed later) over the 6” vent elbow . FIGURE 22 9. Place the water heater at the opening in the wall, at the predetermined clearance. FIGURE 23 10 . Move outdoors with all the remaining vent parts. Using the tube of sealant supplied, run an ample amount on the inside surface of the collar assembly that will [...]

11 16. Go back indoors to attach inside collar to the inside wall. Place the collar against the wall. Secure to wall by using 4 long sheet metal screws. FIGURE 30 NOTE: Screws are supplied; however , substitution may be necessary depending on the interior wall material. 17. Using the tube of sealant supplied, run an ample amount of sealant around t[...]

12 4. Using the tube of sealant supplied, run an ample amount around the oval flare of the jacket. FIGURE 37 5. Place the 6” vent section over the 3” flue section. Subtract 3/4” from the X dimension used earlier and this gives the length of the 6” vent extension. Slide the 6” vent extension apart to this dimension and lock it together usi[...]

13 12. Place the water heater at the opening in the wall, at the predetermined clearance. FIGURE 45 13 . Move outdoors with all the remaining vent parts. Using the tube of sealant supplied, run an ample amount on the inside surface of the collar assembly that will contact the exterior wall and also fill the bead on the end of the 6” diameter vent[...]

14 OPTIONAL HORIZONT AL VENT KIT #900124-7 INST ALLA TION #3 * Each part is stamped with a p art number . FIGURE 53 The opening through the wall should be cut at this time. If it hasn ’ t been, refer back to that section. 1. Lock the elbow to the straight 3” flue pipe. Set the assembly in place on the end of the water heater’s flue collar . F[...]

15 9. Slide the 6” telescoping vent section apart to reveal the beads. NOTE: The section of 6” pipe with beads will connect to the elbow . Using the caulking supplied, fill the beads. FIGURE 62 10. Insert the 6” telescoping vent section into the wall. FIGURE 63 1 1 . Move outdoors with all the remaining vent parts. Using the tube of sealant s[...]

16 FIGURE 70 19. Now the 6” vent extension pipes can be expanded to connect at the vent elbow . FIGURE 71 20. Pull the vent collar from the elbow to be against the wall and secure it using the screws provided. FIGURE 72 21. Lock the 6” vent extension to the vent elbow by using two screws provided, placing them 180 ° apart. OPTIONAL VERTICAL AN[...]

17 FIGURE 77 4. Using the tube of sealant supplied, run an ample amount around the oval flare of the jacket. FIGURE 78 5. Place the 6” vent section over the 3” flue section. Subtract 3/4” from the X dimension used earlier and this gives the length of the 3” vent extension. Slide the 6” vent extension apart to this dimension and lock it to[...]

18 FIGURE 86 14. Move outdoors with all the remaining vent parts. Using the tube of sealant supplied, run an ample amount on the inside surface of the collar assembly that will contact the exterior wall and also fill the bead on the end of the 6” diameter vent collar . FIGURE 87 15. Install the vent collar assembly through the wall, connecting it[...]

19 23. Pull the vent collar from the elbow to be against the wall and secure it using the screws provided. FIGURE 96 24. Lock the 6” vent extension to the vent elbow by using two screws provided, placing them 180 ° apart. FIGURE 97 T & P V A L VE AND PIPE INSULA TION Remove insulation for T & P valve and pipe connections from carton. Fit[...]

20 W ARNING If you do not follow these instructions exactly , a fire or explosion may result causing property damage, personal injury or loss of life. A . This appliance has a pilot which is lit by a piezo-electric spark gas ignition system. Do not remove the access doors of the appliance and try to light the pilot by hand. B . BEFORE LIGHTING smel[...]

21 It is recommended that lower water temperatures be used to avoid the risk of scalding. It is further recommended, in all cases, that the water temperature dial, Figure 99, be set for the lowest temperature which satisfies your hot water needs. This will also provide the most energy efficient operation of the water heater . The water temperature [...]

22 • Turn off the gas and cold water inlet valve to the heater , fig. 1. • Open a nearby hot water faucet and the heater drain valve. • BE CAREFUL TO GRASP THE DRAIN V AL VE HANDLE SO THA T THE HAND IS NOT EXPOSED T O HOT W A TER. IF DESIRED, A HOSE MA Y BE CONNECTED T O THE DRAIN V AL VE TO CARRY THE WA TER A WA Y . DANGER The water CAN BE H[...]

23 TROUBLESHOOTING Please check guidelines below . For your safety , water heater service should be performed only by a qualified service technician. Read the GENERAL SAFETY INFORMA TION section first. PROBLEM POSSIBLE MALFUNCTION SERVICE TO BE PERFORMED POSSIBLE SOLUTION NO HOT W ATER 1) No pilot A. No gas to pilot Check gas supply Turn on, check [...]

24 THIS WARRANTY IS APPLICABLE TO THE ORIGINAL OWNER ONL Y . 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 re[...]

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28 500 TENNESSEE W AL TZ P ARKWA Y , ASHLAND CITY , TN 37015 PHONE: 1-800-433-2545 F AX: 1-800-433-2515 w w w.aosmithwaterheaters.com / email: p art s@hotwater.com[...]