A.O. Smith 186589-004, Instruction Manual

Page 1: ...fety AN ODORANT IS ADDED TO THE GAS USED BY THIS WATER HEATER GAMA certification applies to all residential gas water heat ers with capacities of 20 to 100 gallons with input rating of 75 000 BTU Hr o...

Page 2: ...it relates to the installation of gas fired water heaters The qualified installer must also be familiar with the design features and use of flammable vapor ignition resistant water heaters and have a...

Page 3: ...3 GENERAL SAFETY...

Page 4: ...iation ANSI American National Standards Institute NFPA National Fire Protection Association ASME American Society of Mechanical Engineers GAMA Gas Appliance Manufacturer s Association UL Underwriters...

Page 5: ...TALL PER LOCAL CODES THERMAL EXPANSION TANK INSTALLTHERMALEXPANSION TANK IF WATER HEATER IS INSTALLED IN A CLOSED SYSTEM GAS CONTROL GAS PILOT MAIN BURNER PILOT PIEZO ELECTRODE THERMOCOUPLE FLUE BAFFL...

Page 6: ...a certain temperature water at the hot water tap then you must take special precautions In addition to using the lowest possible temperature setting that satisfies your hot water needs a means such as...

Page 7: ...environment in which the water heater is installed Wa ter heaters are sometimes installed in locations where leakage may result in property damage even with the use of a drain pan piped to a drain Th...

Page 8: ...a space whose volume is less than 50 cubic feet per 1 000 Btu per hour 4 8 cm per kW of the aggregate input rating of all appliances installed in that space VENT TERMINATION Before installing water h...

Page 9: ...ny heating systems or component s used with a non potable water heating appli ance All piping components connected to this unit for space heating applications shall be suitable for use with potable wa...

Page 10: ...TEMPERATURE PRESSURE RELIEF VALVE This heater is provided with a properly certified combination temperature pressure relief valve by the manufacturer The valve is certified by a nationally recognized...

Page 11: ...and continues to release water immediately close the cold water inlet to the water heater follow the draining instructions and re place the temperature pressure relief valve with a new one WATER POTAB...

Page 12: ...ution and wipe dry Wheninstalledatelevationsabove7 700feet 2 347meters input rating should be reduced at the rate of 4 percent for each 1 000 feet 305 meters above sea level which requires replacement...

Page 13: ...ank must be filled with water Water must flow from the hot water faucet before turning ON gas to the water heater To fill the water heater with water 1 Close the water heater drain valve by turning th...

Page 14: ...1 cm above if within 10 ft 3 m horizontally to a mechanical air supply inlet Minimum 12 in 30 cm from sides above or below a permanently closed window or door Minimum 7 ft 2 3 m above public sidewalk...

Page 15: ...72m 68 in for 40 gal models and 1 93m 76 in for 50 gal 50 gal Hi Input and 75 gal models The maximum distance recommended is 2 03m 80 in or in compliance with Figure 16 Where the wall is combustible a...

Page 16: ...junction of the outer corrugated tube and the trim plate inside with suitable sealant SEALANT TRIM PLATE INSIDE TRIM PLATE OUTSIDE FIGURE 19 UNCOMPRESSING THE CORRUGATED TUBING 1 Pull the inner corrug...

Page 17: ...corrugated tube TOP VIEW 90 MAXIMUM BEND FIGURE 26 CONDITION 2 Where floor joists impede venting a rise or drop to complete the vent termination is possible All installations require 25mm 1 in clearan...

Page 18: ...r door 12 Set thermostat to desired setting 13 If the pilot will not stay lit after several tries turn the gas control knob clock wise to OFF see Figure A If the appliance will not operate follow the...

Page 19: ...ter uses can cause temperatures at the point of use to exceed the thermostat setting by up to 17 C 30 F If you experience this type of use you should consider using lower temperature settings to reduc...

Page 20: ...effects 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 equipp...

Page 21: ...ssibility of injury under these conditions we recommend the hot water faucet located farthest away be opened for several minutes before any electri cal appliances which are connected to the hot water...

Page 22: ...er heater will create dangerous conditions which can cause DEATH SERIOUS BODILY INJURY OR PROPERTY DAM AGE Contact a qualified installer or service agency to replace a flooded water heater Do not atte...

Page 23: ...ater to run until it flows clean This will help prevent sediment build up in the tank It is normal for lime and scale deposits to form within the tank Such deposits will not be removed by periodic dra...

Page 24: ...er heater 2 Follow Draining instructions 3 Turning counterclockwise remove the hex cap below the screw handle 4 Remove the washer and put the new one in place 5 Screw the handle and cap assembly back...

Page 25: ...er from temperature pressure relief valve may be due to thermal expansion or high water pres sure in your area D The temperature pressure relief valve may be leaking at the tank fitting E Water from a...

Page 26: ...gas utility company 3 Notify utility install dirt trap in gas line 4 Clean locate source and correct 5 Finger tighten then 1 4 turn with wrench 6 Replace thermocouple 7 Locate source and correct 8 Re...

Page 27: ...3 Heater installed in a confined area 1 Provide ventilation to water heater Check flue way flue baffle burner 2 Clean locate source and correct 3 Provide fresh air ventilation SMOKING AND CARBON FORM...

Page 28: ...28 NOTES...

Page 29: ...used at water pressure not exceeding the working pressure shown on the heater filled with potable water free to circulate at all times and with the tank free of damaging water sediment or scale depos...

Page 30: ...nt 125 Southeast Parkway Franklin TN 37068 phone 1 800 433 2545 The warrantor will only honor replacement with identical or similar water heater or parts thereof which are manufactured or distributed...

Page 31: ...31 500 TENNESSEE WALTZ PARKWAY ASHLAND CITY TN 37015 PHONE 1 800 433 2545 FAX 1 800 433 2515 www aosmithwaterheaters com email parts hotwater com...