A.O. Smith 185363-001 manual

1 Instruction Manual PRINTED IN THE U.S.A 0905 P AR T NO. 185363-001 KEEP THIS MANUAL IN THE POCKET ON HEA TER FOR FUTURE REFERENCE WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE 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 LOCAL[...]

2 SAFE INST ALLA TION, USE AND SERVICE Y our safety and the safety of others is extremely important in the inst allation, 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 [...]

3 GENERAL SAFETY[...]

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

5 TYPICAL INST ALLA TION GET T O KNOW YOUR W A TER HEA TER - GAS MODELS A V ent Pipe–Exhaust B V ent T erminal C V ent Adapter-Rubber Boot D Blower Assembly E Cold Water Inlet F Inlet Water Shut-off V alve G Union H Inlet Dip T ube J Anode** FIGURE 1. K Hot Water Outlet L Outlet Receptacle (1 15 V AC) M T emperature-Pressure Relief V alve N Flue [...]

6 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 tandard for water heaters and is considered suitable for: W ater (Potable) Heating and Sp ace Heating: All models are considered suitable for water (potable) heating and space heating. HOTTER W A TER C[...]

7 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 installation. Whet[...]

8 and 12" (30.5 cm) from the top. (S tandard clearance.) If clearances stated on the heater differ from standard clearances, install water heater according to clearances stated on the heater . Adequate clearance for servicing this appliance should be considered before installation, such as changing the anodes, etc. A minimum clearance of 5&quo[...]

9 Chemical vapor corrosion of the flue, blower assembly and vent system may occur if air for combustion contains certain chemical vapors. S pray can propellants, cleaning solvents, refrigerator and air conditioner refrigerants, swimming pool chemicals, calcium and sodium chloride, waxes, bleach and process chemicals are typical compounds which are [...]

10 The water within the water heater tank expands as it is heated and increases the pressure of the water system. If the relieving point of the water heater’s temperature-pressure relief valve is reached, the valve will relieve the excess pressure. The temperature-pressure relief valve is not intended for the constant relief of thermal expansion.[...]

11 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 attaching the adapter to the cold water inlet connection. Do not solder the cold water supply line directly to the cold water inlet. It[...]

12 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[...]

13 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 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 c[...]

14 VENT CONNECTIONS TO BLOWER ASSEMBL Y Figure 15 shows the optimal placement of the 2" to 3" or 3" to 4" reducer; however , the vent can be reduced at any point in the vent system as long as the maximum and minimum vent length requirements are met. FIGURE 15. VENTING AND INST ALLA TION Plan the layout of the vent system from th[...]

15 The unit may be vented horizontally through a wall or vertically through the roof. Pipe runs must be adequately supported along both vertical and horizontal runs as follows: • For Schedule 40, 2" PVC, ABS, Coex Cellular Core vent pipe: Every 3 feet (0.9 m). • For Schedule 40, 3" PVC, ABS, Coex Cellular Core vent pipe: Every 3.5 fee[...]

16 For 4" V enting, the maximum equivalent feet of pipe allowed is 160 feet (48.8 m). This does not include the V ent T ermination (supplied locally) for the water heater. For the 4" venting, one 90° elbow is approximately equal to 8 feet (2.4 m). One 45° elbow is approximately equal to 4 feet (1.2 m). It is recommended that at least 2 [...]

17 FIGURE 16. This unit can vent through 2", 3" or 4" nonmetallic pipe and fittings. The vent pipe installation can be started from either the blower discharge or the termination wall. Keep in mind the total vent system (pipe and elbows) when installing the vent system, see VENTING AND INST ALLA TION, pages 14 - 16. FIGURE 17. The ve[...]

18 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 t[...]

19 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. Fai[...]

20 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.[...]

21 Due to the nature of the typical gas water heater , the water temperature in certain situations may vary up to 30°F (16.7°C) higher or lower at the point of use such as, bathtubs, showers, sink, etc. Any water heater’s intended purpose is to heat water. Hot water is needed for cleansing, cleaning, and sanitizing (bodies, dishes, clothing). U[...]

22 FOR YOUR INFORMA TION ST ART UP CONDITIONS CONDENSA TE Whenever the water heater is filled with cold water , some condensate will form while the burner is on. A water heater may appear to be leaking when in fact the water is condensate. This usually happens when: a . A new water heater is filled with cold water for the first time. b . Burning ga[...]

23 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[...]

24 INST ALLED IN SUIT ABLE AREA: T o insure suf ficient ventilation and combustion air supply , proper clearances from the water heater must be maintained. 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 heater[...]

25 LEAKAGE CHECKPOINTS Read this manual first. Then before checking the water heater make sure the gas supply has been turned “OFF”, and never turn the gas “ON” before the tank is completely full of water . 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 wa[...]

26 Key No. Part Description 1 Burner Assembly 2 Burner Head 3 Burner Orifice 4 Burner T ube 5 HSI Ignition Assembly 6 Inner Door 7 Inner Door Gasket 8 Flue Baffle 9 Flue Restrictor 1 0 Blower Assembly 11 Air Intake Screen - Base Pan 1 2 Inlet T ube 1 3 Gas Control Valve 1 4 Drain V alve 1 5 Drain V alve Washer 1 6 Outer Door (may appear different t[...]

27 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. PROBLEM SOLUTION An open earth ground circuit to the 1. Check that the earth ground connecti[...]

28 These guidelines should be utilized by a qualified service agent. When calling for service notify the service agent that this is a “Flammable V apor Ignition Resistant” Product. TROUBLESHOOTING GUIDELINES TROUBLESHOOTING GUIDELINES[...]

29 NOTES:[...]

30 NOTES:[...]

31 THIS WARRANTY IS APPLICABLE TO 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 o[...]

32 5621 W . 1 15TH STREET , ALSIP , IL 60803 PHONE: 1-800-433-2545 F AX: 1-800-433-2515 w w w .hotwater .com E-mail: part s@hotwater .com[...]