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SERVICE HANDBOOK 

FOR 

STANDARD RESIDENTIAL 

 GAS WATER HEATERS 

(NON POWER VENTED MODELS)

 

 

 

 

 
 
Printed in the USA 0604 

 

   Part 

Number 

STC-080 

$15.00 

This service handbook addresses service issues associated with Standard Residential Gas  
Water Heaters. Includes C-3 Flammable Vapor Technology. 

Содержание STC-080

Страница 1: ...IAL GAS WATER HEATERS NON POWER VENTED MODELS Printed in the USA 0604 Part Number STC 080 15 00 This service handbook addresses service issues associated with Standard Residential Gas Water Heaters In...

Страница 2: ...the express written authorization of the manufacturer The following text and illustrations will provide you with a step by step procedure to verify proper installation operation and troubleshooting p...

Страница 3: ...ermal efficiency and standby efficiency of a water heater The higher the energy factor the more efficient the water heater will be Recovery rate is the amount of water that is heated to a set temperat...

Страница 4: ...y 3 413 Kilowatts To convert from Fahrenheit to Centigrade F 32 times 5 9 or 556 equals degrees C One gallon of 120 F 49 C water weighs approximately 8 25 pounds Pounds X 45359 Kilogram Gallons X 3 78...

Страница 5: ...of a glass lining bonded to the steel This prevents water to metal contact and rusting of the tank An anode rod will be installed within the tank The hex head plug end of the anode is visible on the t...

Страница 6: ...surize to Equal Supply Water Pressure Water Shut Off Valve Temperature and pressure relief valve tube piped to within 6 of drain Thermostat recommended starting point 120 F Safety Pan Piped to Drain D...

Страница 7: ...ng of Residential Gas Tank Type Water Heaters which are vented atmospherically and use a thermocouple as their electrical source Control There is one control on this style of water heater The control...

Страница 8: ...e tank reaches set temperature then the thermostat interrupts this main gas flow AFTER HAVING CONFIRMED THAT THE WATER HEATER HAS BEEN INSTALLED PER THE INSTALLATION MANUAL INSTRUCTIONS Normal Operati...

Страница 9: ...d the probe cools and heats As the rod expands it pushes against a lever actuated gas valve If the regulator is pushed sufficiently gas flow is interrupted to the main burner Adjusting the temperature...

Страница 10: ...y 120 degrees F The heater may shut off at 110 to 130 F The heater will consistently shut off at this same temperature For this same reason water temperature may drop 15 25 F around the temperature pr...

Страница 11: ...lution air for flue products Do not forget that your gas or oil furnace and gas clothes dryer also require a like amount of air When calculating air supply provisions also consider the presence of who...

Страница 12: ...er heater with match or smoke source to verify Manifold Gas Pressure Test Gas pressure checks are done with flowing gas Supply gas pressure checks are taken ahead of the gas control and as close to th...

Страница 13: ...s own electrical generating system When two dissimilar metals are joined together and this joint is heated a small electrical current will be produced A thermocouple uses this science Thermocouple out...

Страница 14: ...uple cools If then internal safety does not activate between 1 and 3 mV you will hear a click inside the valve replace the control valve internal safety does activate between 1 and 3 mV valve is withi...

Страница 15: ...are small black or red granules on the main burner or top of the heater or corroded jacket or vent piping is noted If then any of the above conditions exist raise the supply air temperature or increa...

Страница 16: ...remain the same as discussed in the primary handbook The FVIR acronym stands for Flammable Vapor Ignition Resistant The State products are based on Corderite Combustion Containment known as C3 Techno...

Страница 17: ...these products might be a vacuum cleaner with both blowing and vacuuming capabilities Also include the long narrow crevice accessory LDO SCREEN LINT DUST OIL SCREEN S An easy to clean screen designed...

Страница 18: ...ccidentally into the combustion chamber the flame arrestor is designed so any flames burn off the top surface of the arrestor and cannot escape down through the arrestor The arrestor works somewhat li...

Страница 19: ...fied service agent COMBUSTION CHAMBER TEMPERATURE SENSOR The C3 Technology water heaters will come equipped with a thermal cutoff TCO device that is integral with the thermocouple Temperature cutoff p...

Страница 20: ...ed With the different cutoff temperature set points of TCO devices for different model water heaters it is important that the correct part is used when replacement of the pilot burner assembly is nece...

Страница 21: ...w pilot assembly into back side of inner door Wetting the orange gasket may help in securing the gasket into place 9 Reattach the new pilot assembly to the pilot mounting bracket 10 Inspect replace th...

Страница 22: ...not bent at an angle close to the surface of the seal as it passes through the pilot assembly seal A five point inner door seal inspection is outlined below Five point inner door seal inspection 1 In...

Страница 23: ...having a low NOx nitrous oxide burner which meets SCAQMD rule 1121 All C3 TECHNOLOGY models will have a brass drain valve standard See the Technical Bulletins Section of this manual for explanations...

Страница 24: ...e drop during usage Store water at a higher temperature install a mixing valve to reduce danger of scalding Contaminated Air Bleaches floor waxes detergents salt and many other household products cont...

Страница 25: ...and off The metal or weld joints crack Flush the sand from the tank every 6 months Delime the tank interior yearly Install a water softener in hard water areas These should be adjusted according to m...

Страница 26: ...ly related to the intensity of the surge pressure EFFECTS The damage from water hammer can manifest itself in a number of ways The most common are Expanded Tank Shell This can be demonstrated by measu...

Страница 27: ...ptoms often include a popping of water trapped under lime deposits or the sizzling of water trapped next to elements boiling it to steam THE FIX Treatment of a limed up heater is relatively simple Sin...

Страница 28: ...to any degree 1 Turn off the heater 2 Remove the anode 3 Flush the tank thoroughly with water 4 Replace the aluminum anode identifiable by smooth surface on plug with magnesium anode identifiable by...

Страница 29: ...orable Soluble iron in the water provides food for the bacteria Rusty discolored water is the end result of the bacteria feeding process Water heaters and storage tanks usually require new anode rods...

Страница 30: ...sulfur in the water b activated hydrogen from cathodic reactions within the tank c water with little or no dissolved oxygen d and temperatures below 138 F Items that can increase the potential for the...

Страница 31: ...e opening add one gallon of household chlorine bleach e g Clorox or Purex for every 25 gallons of tank capacity STEP 7 Reinstall anode rod s after inspecting and replacing as needed STEP 8 Open cold w...

Страница 32: ...P 1 At the faucet nearest to the water heater time in seconds how long it takes to fill a 1 gallon bucket flow rate Gallon per minute gpm 60 seconds seconds to fill a 1 gallon bucket If the bucket fil...

Страница 33: ...erve a useful purpose Do not remove them The use of pressure reducing valves PRV is another cause PRVs are designed to conserve water and prolong fixture life Many PRVs also act as very effective chec...

Страница 34: ...nufacturers instructions for installing the expansion tank Run the thermal expansion check again The pressure should increase only slightly then hold steady throughout the recovery cycle The expanded...

Страница 35: ...is below its reset temperature The pressure rating on the relief valve should be the same or less than the certified working pressure of the tank generally 150 psi and be below the lowest pressure rat...

Страница 36: ...s Telephone 1 800 821 2017 Fax number 800 644 9306 or visit our web site at www statewaterheaters com For additional information or assistance in servicing you re State water heater visit our web site...

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