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A.O. Smith GDVT manual

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Table of contents for the manual

  • Page 1

    Instruction Manual PRINTED IN CANADA 1 107 P AR T NO. 186138-000 KEEP THIS MANUAL IN THE POCKET ON HEA TER FOR FUTURE REFERENCE WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED. DIRECT VENT GAS MODELS GDV/GDVT NOT FOR USE IN MANUF ACTURED (MOBILE) HOMES RESIDENTIAL GAS W A TER HEA TERS • For Y our Safety • AN ODORANT IS ADDED TO THE GAS U[...]

  • Page 2

    2 SAFE INST ALLA TION, USE AND SERVICE Y our 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 all safety m[...]

  • Page 3

    3 GENERAL SAFETY[...]

  • Page 4

    4 SAFE INST ALLA TION, USE AND SERVICE . . . . . . . . . . . . . 2 GENERAL SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 T ABLE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Preparing for the installation . . . .[...]

  • Page 5

    5 For all side wall terminated, horizontally vented power vent, direct vent, and power direct vent gas fueled water heaters insta lled in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven ([...]

  • Page 6

    6 GET TO KNOW YOUR W A TER HEA TER REPLACEMENT P ARTS 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 be purchased locally . ALL PIPING MA TERIALS TO[...]

  • Page 7

    7 FIGURE 2 MIXING V AL VE USAGE This appliance has been design certi fi ed as complying with American National Standard/CSA Standard for water heaters and is considered suitable for: W ater (Potable) Heating and Space Heating: All models are considered suitable for water (potable) heating and space heat- ing. HOTTER W A TER CAN SCALD: W ater heate[...]

  • Page 8

    8 F ACTS TO CONSIDER ABOUT THE LOCA TION 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 manufactured (mobile) homes or outdoor installation. W[...]

  • Page 9

    9 INSULA TION 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. Y our Water heater meets or exceeds the National Appliance Energy Conser- vation Ac[...]

  • Page 10

    10 REQUIRED ABILITY INST ALLA TION OR SERVICE OF THIS W A TER HEA TER REQUIRES ABILITY EQUIV ALENT TO THA T OF A LICENSED TRADESMAN IN THE FIELD INVOL VED. PLUMBING, AIR SUPPL Y , VENTING AND GAS SUPPL Y ARE REQUIRED. INSPECT SHIPMENT There may be hidden damage caused in transit. Check to be certain all parts of the venting system, as listed below [...]

  • Page 11

    11 HOT W A TER OUTLET COLD W A TER INTLET DRAIN V AL VE DISCHARGE PIPE (DO NOT CAP OR PLUG) DRAIN P AN 3/4” SWEA T FITTING UNION SHUTOFF VA LV E FLOOR DRAIN 3/4” SWEA T FITTING TEMPERA TURE AND PRESSURE RELIEF V AL VE UNION 6” MAXIMUM AIR GAP FIGURE 5 Figure 5 shows the typical attachment of the water piping to the water heater . The water he[...]

  • Page 12

    12 distance below the structural fl oor . Be certain that no contact is made with any live electrical part. The discharge opening must not be blocked or reduced in size under any circumstances. Excessive length, over 30 ft. (9.14m), or use of more than four elbows can cause restriction and reduce the discharge capacity of the valve, see Figures 5 [...]

  • Page 13

    13 minimum inlet gas pressure shown on the rating plate is that which will permit fi ring at rated input. All gas piping must comply with local codes and ordinances or with the National Fuel Gas Code ANSI Z223.1/NFP A 54 which- ever applies. Copper and brass tubing and fi ttings (except tin lined copper tubing) shall not be used. If the gas contr[...]

  • Page 14

    14 SEDIMENT TRAPS A sediment trap shall be installed as close to the inlet of the water heater as practical at the time of water heater installation. The sediment trap shall be either a tee fi tting with a capped nipple in the bottom outlet or other device recognized as an ef- fective sediment trap. If a tee fi tting is used, it shall be installe[...]

  • Page 15

    15 COMBUSTION AIR AND VENTILA TION When determining the installation location for a direct vent water heater , snow accumulation and drifting should be considered in areas where applicable. VENT TERMINAL CLEARANCES The vent system must terminate so that proper clearances are maintained as cited in local codes or the current edition of the National [...]

  • Page 16

    16 FIGURE 12 Be sure venting is properly connected to prevent escape of dan- gerous fl ue gases which could cause deadly asphyxiation. FIGURE 13 VENT CONNECTIONS After the location for the vent terminal has been selected as outlined in Figures 3, 4 & 1 1, use the following illustrations for installation: FIGURE 14 LOCA TING CLEARANCE HOLE FOR [...]

  • Page 17

    17 ST ANDARD VENT ARRANGEMENT 2.6 in. (67mm) 3.6 in. (91mm) 2.1 in. (54.5mm) WALL 17 in. (432mm) MIN.,* 80 in. (2.03m) MAX. FIGURE 17 * If the horizontal distance is less than 30 in. (760mm), the restricter plate must be installed (see Figure 22). VENT ASSEMBL Y The vent tube and terminal are assembled by the manufacturer as shown in Figure 18. The[...]

  • Page 18

    18 Pull and connect the 3-1/8 in. (80mm) corrugated tube to the water heater ’s fl ue tube reducer with hi-temp red silicone (included) and gear clamp. Make sure this connection is tight and leak proof. *The sealant between 3-1/8 in. (80mm) corrugated tube and water heater ’s fl ue tube reducer must be hi-temp red silicone or other material s[...]

  • Page 19

    19 1 . T urn the t hermo stat dial to lowest setting (PILOT LIG HTI NG). 2. Push gas c ontro l knob dow n slightly and tur n cl ock-wis e to 'O FF' . D o not forc e. SEE FIGUR E ' A ' . T O TURN OFF GAS TO APPLIANCE 186271-000 1. STOP! Read the safet y information ab ove on this label . 2. Set th e ther most at to lowest set tin[...]

  • Page 20

    20 TEMPERA TURE REGULA TION TEMPERA TURE REGULA TION HOT W A TER CAN SCALD: W ater 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 you upon contact. Some people are more likely to be permanently injur[...]

  • Page 21

    21 EXTERNAL DAMAGE Do not operate the water heater until it has been fully checked out by a quali fi 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. ST ART UP CONDITIONS NEVER OPERA[...]

  • Page 22

    22 lines. Contact the local water heater supplier or service agency for further information concerning an Anode Replacement Kit and this chlorination treatment. If the smelly water persists after the anode replacement and chlorination treatment, we can only suggest that chlorination or aeration of the water supply be considered to eliminate the wat[...]

  • Page 23

    23 FOR YOUR SAFETY AND SA TISF ACTOR Y OPERA TION, IT IS RECOMMENDED THA T THIS HEA TER BE CHECKED ONCE A YEAR BY A COMPETENT SER VICE PERSON. USERS OF THIS APPLIANCE SHOULD BE AWARE THAT GAS COMPONENTS WEAR OUT OVER A PERIOD OF TIME. THE GAS CARRYING COMPONENTS OF THIS APPLIANCE SHOULD BE INSPECTED FOR PROPER OPERA TION PERI- ODICALL Y BY A QUALIF[...]

  • Page 24

    24 TEMPERA TURE & PRESSURE RELIEF V AL VE 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 fl ow , remove the valve and inspect for[...]

  • Page 25

    25 Before removing the anode: 1) the tank water should be cool, 2) the cold water shut off valve must be closed, and 3) water pres- sure must be relieved by opening a nearby faucet. DRAIN V AL VE W ASHER REPLACEMENT (See Figure 30) 1. Turn “OFF” gas supply to water heater . 2. Follow “Draining” instructions. 3. Turning counterclockwise ( ),[...]

  • Page 26

    26 LEAKAGE CHECKPOINTS 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 thoroughly familiar with [...]

  • Page 27

    27 TROUBLESHOOTING GUIDELINES PROBLEM POSSIBLE CA USE(S) CORRECTION BURNER WILL NOT IGNITE 1. Pilot not lit 2. Thermostat set too low 3. No gas 4. Dirt in the gas lines 5. Pilot line clogged 6. Main burner line clogged 7. Defective thermocouple 8. Defective gas control/thermostat 9. Heater installed in a con fi ned area 1. Light pilot 2. Turn temp[...]

  • Page 28

    28 PROBLEM POSSIBLE CA USE(S) CORRECTION SLOW HOT W A TER RECOV - ERY 1. Insuf fi cient secondary air 2. Flue clogged 3. Low gas pressure 4. Improper calibration 5. Gas control/thermostat set too low 6. Water heater too small 7. Wrong piping connections 8. Wasted hot water 1. Provide ventilation to water heater . Check fl ue way , fl ue baf fl [...]

  • Page 29

    29 NOTES[...]

  • Page 30

    30 RESIDENTIAL GAS W ARRANTY THIS W ARRANTY IS APPLICABLE TO THE ORIGINAL OWNER ONL Y in accordance with the warranty terms and conditions speci fi 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 this water heater leaks and, 2) a replacement p[...]

  • Page 31

    31 SERVICE AND LABOR RESPONSIBILITY UNDER THIS LIMITED W ARRANTY , THE W ARRANTOR WILL PROVIDE ONL Y A REPLACEMENT W A TER HEA TER OR P ART 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 water heater or part thereof. b. Shipping a[...]

  • Page 32

    32 500 TENNESSEE W AL TZ P ARKW A Y ASHLAND CITY , TN 37015 PHONE: 1-800-433-2545 F AX: 1-800-433-2515 www .aosmithwaterheaters.com / email: parts@hotwater .com[...]