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GAS WATER HEATERS
RESIDENTIAL OWNER'S MANUAL
DIRECT VENT
GAS MODELS
Thank you for buying this energy efficient water heater from
A.O. Smith Water Products Company. We appreciate your
confidence in our products.
FDV/FDVT/SDV
You should thoroughly read this manual before installation
and/or operation of this water heater. Please pay particular
attention to the important safety and operating instructions
as well as the WARNINGS and CAUTIONS.
TABLE OF CONTENTS
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GET TO KNOW YOUR WATER HEATER REPLACEMENT PARTS TYPICAL INSTALLATION Replacement parts may be ordered through authorized WARNING servicers or distributors. Refer to the Yellow Pages for where to DO NOT ATTEMPT TO OPERATE WATER HEATER WITH COLD call or contact A. O. Smith Water Products Company, 5621 W. WATER INLET VALVE CLOSED. 115th Street, Alsip, IL 60803, 1-800-433-2545. When ordering parts, provide complete model and serial numbers (see rating plate), quantity and name of part desired (as
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these instructions can restrict the air flow required for proper GENERAL SAFETY combustion, resulting in fire, asphyxiation, serious personal injury or death. INFORMATION • Do not cover the outer door, thermostat or temperature & EXTERNAL DAMAGE pressure relief valve. Do not cover the instruction manual. Keep it on the side of the Do not operate the water heater until it has been fully checked out water heater or nearby for future reference. by a qualified technician, if t
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the heater. Such pans should have a minimum length and width of at least 2 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 Products Company, 5621 W. 115th Street, Alsip, IL 60803. Contact us at our website: www.hotwater.com, phone: 800.433.2545, or fax: 1.800.433.2515. Under no circumstances is the manufacturer to be held liable for any water damage in connection w
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torque when attaching gas supply pipe to thermostat gas inlet. VENT PIPE TERMINATION The thermostat inlet has a pad for use with a backup wrench. Before installing water heater determine placement of vent pipe Apply joint compounds (pipe dope) sparingly and only to the male termination. threads of pipe joints. Do not apply compound to the first two threads. Use compounds resistant to the action of liquefied MAKE CERTAIN TO OBSERVE VENT LOCATION LIMITATION, petroleum gases. Do not use teflon t
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VENTING CLEARANCES 18” minimum in all directions from any obstruction that may interfere. 18” minimum from the ground and 12” from ceiling overhangs. Figure 4. The direct vent terminal shall terminate at least 3 feet above any forced air inlet located within 10 feet. Figure 5. 9” minimum horizontally from or above any door, window or gravity air inlet into the building (50,000 BtuH input or less.) 12” minimum horizontally from or above any door, window or gravity air inlet into the bu
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WARNING At no time can more than one Vertical and/or one Horizontal Vent Kit be used. VERTICAL (EXTENSION KIT) HEIGHT It is simple to determine which kit is needed for vertical height. Take the total height (to the top of the flue) required and comparing that to “F DIMENSION” in TABLE 1, it can be determined which kit needs to be used vertically. WARNING Obstructions and deteriorated vent systems may present FIGURE 9 serious health risk or asphyxiation. Unless otherwise specified at the time
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TABLE 2. WATER HEATER ATTITUDE E DIMENSIONS 40-50 Gal. 75 Gal. There is a certain amount of variance with regard to the VENT KITS MIN. MAX. MIN. MAX. direction the water heater faces. 900068-7-STD. 3-1/2 10 7/8 7-3/8 Standing in front of the water heater (gas control facing you), 900124-6 10 15-1/2 7-3/8 12-7/8 set the 3” diameter elbow (slotted end) on the flue. This will 900124-7 15-1/2 26-1/2 12-7/8 23-7/8 give you a better understanding of the relation of the vent 900124-8 26-1/2 48 23-7/8
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4. First remove the 3” horizontal extension from the elbow. 8. Slide the vent collar (to be installed later) over the 6” vent Starting with the long end (with four securing holes), place elbow. the 6” diameter vent elbow over the 3” diameter elbow. Bend the round end “oval” to fit the flared oval end of the jacket top. FIGURE 22 9. Place the water heater at the opening in the wall, at the FIGURE 18 predetermined clearance. 5. Making sure the 6” diameter elbow is centered around the 3” diameter f
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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 26 12. Four wood screws are supplied to temporarily attach the collar to the exterior wall of the building. However, other types of screws may have to be substituted depending on the FIGURE 30 material used in the construction of the exterior wall. NOTE: Screws are supplied; however, substitution may be necessary depending on the interior
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Use the simple equation below, chart and drawing 4. Using the tube of sealant supplied, run an ample amount to find the length of expansion of the telescoping flue sections. around the oval flare of the jacket. Because of manufacturing tolerances, place the telescoping extension on the water heater and adjust the height (“X” Dimension) and mark the point. Once the length has been determined, lock the two sections together by drilling two holes (180° apart) in the pipe and securing with the scre
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8. Making sure the 6” diameter elbow is centered around the 3” diameter flue, secure the 6” diameter vent pipe using two sheet metal screws at the connection of the elbow and 6” vertical extension. FIGURE 41 9. The standard vent kit includes a 6” diameter extension pipe FIGURE 45 which is used when “E” dimension over 6 1/2”. 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
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17. Connect the vent cap by sliding its end over the 3” diameter OPTIONAL HORIZONTAL VENT KIT #900124-7 extension pipe and O-ring. INSTALLATION #3 NOTE: To facilitate ease of assembly of the vent cap to the 3” pipe, a soap solution can be applied to the O-ring gasket. * Each part is stamped with a part number. FIGURE 50 FIGURE 53 18. The vent cap has 4 holes around the outer edge. Remove the 4 screws used to temporarily attach the collar to the The opening through the wall should be cut at this
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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 57 5. Making sure the 6” diameter elbow is centered around the 3” diameter flue, secure the 6” diameter vent pipe using four sheet metal screws at the connection of the jacket top. FIGURE 62 10. Insert the 6” telescoping vent section into the wall. FIGURE 58 6. The standard kit includes a single piece of 3” flu
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14. Place the vent cap in the vent collar assembly. FIGURE 70 19. Now the 6” vent extension pipes can be expanded to connect at the vent elbow. FIGURE 67 15. The vent cap has 4 holes around the outer edge. Remove the 4 screws used to temporarily attach the collar to the exterior wall. Then secure the vent cap assembly with the vent collar assembly to the exterior wall using the same 4 screws. NOTE: Screws are supplied; however, substitution may be FIGURE 71 necessary depending on the exterior
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FIGURE 77 FIGURE 74 4. Using the tube of sealant supplied, run an ample amount around the oval flare of the jacket. Use the simple equation below, chart and drawing to find the length of expansion of the telescoping flue sections. Because of manufacturing tolerances, place the telescoping extension on the water heater and adjust the height (“X” Dimension) and mark the point. Once the length has been determined, lock the two sections together by drilling two holes (180° apart) in the pipe and se
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8. The standard kit includes a single piece of 3” flue and 6” vent pipe which will not be used in conjunction with the optional horizontal kit. FIGURE 82 9. Making sure the 6” diameter elbow is centered around the FIGURE 86 3” diameter flue, secure the 6” diameter vent pipe using two sheet metal screws at the connection of the elbow and 14. Move outdoors with all the remaining vent parts. Using the 6” vertical extension. tube of sealant supplied, run an ample amount on the inside surface of the
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4 screws used to temporarily attach the collar to the exterior 23. Pull the vent collar from the elbow to be against the wall wall. Then secure the vent cap assembly with the vent collar and secure it using the screws provided. assembly to the exterior wall using the same 4 screws. NOTE: Screws are supplied; however, substitution may be necessary depending on the exterior wall material. FIGURE 96 24. Lock the 6” vent extension to the vent elbow by using two FIGURE 91 screws provided, placing th
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FOR YOUR SAFETY READ BEFORE LIGHTING WARNING 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 must be lighted by hand. When If you cannot reach your gas supplier, call the fire lighting the pilot, follow these instructions exactly. department. B.BEFORE LIGHTING smell all around the appliance area for gas. C.Use only your hand to push in or turn the gas control Be sure to
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Temperature Time to Produce 2nd & 3rd Setting Degree Burns on Adult Skin VERY HOT= approx. 160°F About 1/2 second C = approx. 150°F About 1-1/2 seconds B = approx. 140°F Less than 5 seconds A = approx. 130°F About 30 seconds = approx. 120°F More than 5 minutes LOW = approx. 80°F TEMPERATURE REGULATION FIGURE 98 DANGER THIS WATER HEATER IS EQUIPPED WITH AN ADJUSTABLE Valves for reducing point-of-use temperature by mixing cold and THERMOSTAT TO CONTROL WATER TEMP
