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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 1
1 Instruction Manual PRINTED IN THE U.S.A 0606 P ART NO. 1 97 423 -0 01 KEEP THIS MANUAL IN THE POCKET ON HEA TER FOR FUTURE REFERENCE WHENEVER MAINTENANCE ADJUSTMENT OR SER VICE IS REQUIRED. POWER VENTED GAS MODELS W / HOT SURF ACE IGNITION NOT FOR USE IN MANUF ACTURED (MOBILE) HOMES ALL TECHNICAL AND W ARRANTY QUESTIONS: SHOULD BE DIRECTED TO THE ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - 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 ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 3
3 GENERAL SAFETY ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 4
4 GENERAL SAFETY ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 5
5 Thank Y ou for purchasing this water heater . Properly inst alled 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 • NFP A - National Fire Protection Association • ASME - American Society o ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 6
6 TYPICAL INST ALLA TION * CAUTION HARNESS HAS 120 V AC. IN OPERA TION. ** See "PLANNING THE VENT SYSTEM", "CONDENSA TE" and "BLOWER ASSEMBL Y INST ALLA TION " f or more information. ***The side recirculation loop connections may not be used as the primary water inlet and outlet connections. For your convenience, plugs ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 7
7 TYPICAL INST ALLA TION CONDENSA TE HOSE AND DRAIN P AN FIGURE 1 (continued). * Note: Condensate T rap Loop s must be oriented in a vertical plane as shown. The traps also must be primed by filling half of the loop with water prior to operating the water heater . Carefully plan the location of the loops and straight sections of hose prior to cutti ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 8
8 TYPICAL INST ALLA TION FIGURE 2. MIXING V AL VE USAGE This appliance has been design certified as complying with American National S tandard/CSA S t andard for water heaters and is considered suitable for: W ater (Potable) Heating and S p ace Heating: All models are considered suitable for water (potable) heating and space heating. HOTTER WA TER ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 9
9 FACTS 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 economical use of the appliance. This water heater is not for use in manufactured (mobile) homes or outdoor inst allation. Whe ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 10
10 in an alcove or closet, the entire floor must be covered by the panel. Failure to heed this warning may result in a fire hazard. Minimum clearances between the water heater and combustible co nst r uc t i on are 0 inch at the s i de s and r ear, 5 . 5" (14.0 cm) from t he f r ont and 12" (30.5 cm) from the top. (S tandard clearance.) I ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 11
11 a free area of one square inch per 1000 Btu/hr (22 cm 2 /kW) of th e total input of all appliances in the enclosure, but not less than 100 square inches (645 cm 2 ). If the confined space is within a building of tight construction, air for combustion and ventilation must be obtained from outdoors. When directly communicating with the outdoors or ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 12
12 W ater supply systems may , because of such events as high line pressure, frequent cut-of fs, the ef fects of water hammer among others, have installed devices such as pressure reducing valves, check valves, back flow preventers, etc. to control these types of problems. When these devices are not equipped with an internal by-pass, and no other m ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 13
13 Figure 10 shows the typical attachment of the water piping to the water heater . The water heater is equipped with 3/4 inch NPT water connections. NOTE: If using copper tubing, solder tubing to an adapter before att aching the adapter to the water heater connections. Do not solder the water lines directly to the water heater connections. It will ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - 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 firing at rated input. All gas piping must comply with local codes a ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 15
15 SEDIMENT TRAPS A sediment trap shall be inst alled 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 fitting with a capped nipple in the bottom outlet or other device recognized as an effective sediment trap. If a tee fitting is used, it shall be installed in ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 16
16 VENT PIPE TERMINA TION The first step is to determine where the vent pipe will terminate. See Figures 15, 20 and 21. The vent may terminate through a sidewall as shown in Figure 20 or through the roof as shown in Figure 21. The vent system must terminate so that proper clearances are maintained as cited in local codes or the current edition of t ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 17
17 PLANNING THE VENT SYSTEM Plan the route of the vent system from the discharge of the blower to the planned location of the vent terminal. 1. La yout total ven t s ystem to use a minimum of v ent pipe a n d el bo ws. 2. This water heater is cap able of venting flue gases equivalent to 25' (7.6 m) of 2" pipe, 65' (19.8 m) of 3" ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 18
18 The condensate trap may be primed by filling the CONDENSA TE U-ASSEMBL Y with t ap water using the supplied hose while the water heater is not operating. The system is fully primed when the hose is lowered below the hose clamp on the side of the water heater and water begins to flow out of the hose. In most installations the water heater will se ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 19
19 CAUTION LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SER VICING CONTROLS. WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS OPERA TION. VERIFY PROPER OPERA TION AFTER SERVICING . POWER VENT WIRING SCHEMA TIC - FIGURE 19. 2. If the Vent T erminal is being inst alled on the outside of a finished wall, it may be easier to mark both the inside and outsi ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 20
20 INST ALLA TION OF VENT SYSTEM, SIDEW ALL With the route of the venting system and selection of materials completed, as discussed in the section of this manual titled PLANNING THE VENT SYSTEM, the through the wall vent terminal in place and the first section of piping, up to first elbow , installed at the blower it is time to complete the install ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 21
21 VENT A TTENU A T I O N ASSEMBL Y I N S T ALL A T I O N I NSTR UC T I ON S The V ent Attenuation Assembly (V AA) is designed to provide a reduction in fan noise created in the blower wheel. This installation of this V AA is optional. Review directions thoroughly prior to installing the new V AA. Please cont act the manufacturer of the water heate ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 22
22 8. T ake the end of the tube at the bottom of the floor and route it to a suitable drain. This will provide an area where the condensate can drain without affecting the area around the appliance. 9. Once inst alled along with the rest of the vent configuration, make sure to operate the unit through at least one heat up cycle to ensure there is n ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 23
23 VENT PIPE PREP ARA TION 1. INITIAL PREP ARA TION A. Make sure the solvent cement you are planning to use is designed for the specific application you are attempting. B. Know the physical and chemical characteristics and limitations of the PVC and CPVC piping materials that you are about to use. C. Know the reputation of your manufacturer and the ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 24
24 B. Deburring Use a knife, plastic pipe deburring tool, or file to remove burrs from the end of small diameter pipe. Be sure to remove all burrs from around the inside as well as the outside of the pipe. A slight chamfer (bevel) of about 10°-15° should be added to the end to permit easier insertion of the pipe into the end of the fitting. Failu ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 25
25 FOR YOUR SAFETY READ BEFORE OPERA TING 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 does not have a pilot. It is equipped with an ignition device which automatically lights the burner . Do NOT try to light the burner by hand. ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 26
26 Any water heater’s intended purpose is to heat water . Hot water is needed for cleansing, cleaning, and sanitizing (bodies, dishes, clothing). Untempered hot water can present a scald hazard. Depending on the time element, and the people involved (adults, children, elderly , infirm, etc.) scalding may occur at different temperatures. It is rec ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 27
27 FOR YOUR INFORMA TION ST ART UP CONDITIONS SMOKE/ODOR It is not uncommon to experience a small amount of smoke and odor during the initial start-up. This is due to burning off of oil from metal parts, and will disappear in a short while. THERMAL EXP ANSION W ater supply systems may , because of such events as high line pressure, frequent cut-of ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 28
28 VENTING SYSTEM INSPECTION At least once a year a visual inspection should be made of the venting system. Y ou should look for: 1 . Obstructions which could cause improper venting. The combustion and ventilation air flow must not be obstructed. 2. Damage or deterioration which could cause improper venting or leakage of combustion products. Be sur ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 29
29 INST ALLED IN SUIT ABLE AREA: T o insure suf ficient ventilation and combustion air supply , proper clearances from the water heater must be maint ained. See “Locating the New Water Heater” section. Combustible materials such as clothing, cleaning materials, or flammable liquids, etc. must not be placed against or adjacent to the water heate ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 30
30 LEAKAGE CHECKPOINTS Never use this water heater unless it is completely filled with water . T o prevent damage to the tank, the tank must be filled with water . W ater must flow from the hot water faucet before turning “ON” gas to the water heater . A *Condensation may be seen on pipes in humid weather or pipe connections may be leaking. B. ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 31
31 Key No. Part Description 1 Outer Door 2 Aluminum Anode 3 Intellivent Control 4 Plastic T op 5 Blower Assembly 6 Switch and Harness Assembly 7 T&P V alve 8 Drain V alve 9 Wiring Harness 10 Aluminum Anode Outlet 1 1 V ent Pipe Assembly #1 12 V ent Pipe Assembly #2 13 V ent Pipe Assembly #3 14 Inlet T ube 15 Pipe Nipple 16 Burner T ube Assembly ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 32
32 TROUBLESHOOTING GUIDELINES TROUBLESHOOTING GUIDELINES TROUBLE SHOOTING Please check guidelines below . For your safety , water heater service should be performed only by a qualified service technicia n. Read the GENERAL SAFETY INFORMA TION section first. INTELLI-VENT TROUBLESHOOTING CHART - RESIDENTIAL CONTROL PROBLEM SOLUTION Inadequate or no e ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 33
33 TROUBLESHOOTING GUIDELINES TROUBLE SHOOTING Please check guidelines below . For your safety , water heater service should be performed only by a qualified service technicia n. Read the GENERAL SAFETY INFORMA TION section first. INTELLI-VENT TROUBLESHOOTING CHAR T - RESIDENTIAL CONTROL PROBLEM SOLUTION Ignition/flame failure. 1. Gas supply is tur ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 34
34 These guidelines should be utilized by a qualified service agent. TROUBLESHOOTING GUIDELINES TROUBLESHOOTING GUIDELINES PROBL EM CA USE SOL UTION 1. ) Bl ow er wi l l not run. a. “ON/ OF F” co nt r ol sw i tch tu r ne d o ff. Tur n sw i tch to the “ O N” po si tion . b. B l ow er un plugge d. Plug b lo we r b ack int o 1 15 VAC o u tlet ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 35
35 THIS W ARRANTY IS APPLICABLE T O THE ORIGINAL OWNER ONL Y . If the glass lined tank in this water heater shall prove upon examination by (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 replacement water heater ...
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A.O. Smith RESIDENTIAL GAS WATER HEATER - page 36
36 ...
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