 Exercise the warranty !! Review Marathon water heater |
Marathon
water heater elements/ Elements are weakest point of this water heater Marathon has exact same energy factor as regular steel metal tank.... there is not a greater insulation valve with Marathon: Read review Marathon water heater Search waterheatertimer.org /
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 Larger 1-7/8" element gives larger opening for cleaning out sediment. Use element wrench SP610070, or buy 1-7/8" socket at local auto parts. The SP610070 is ordinary cheapo element wrench, while auto parts socket will grab elements better Buy: 1-7/8" socket |
Elements
burn out frequently? Use lower wattage ... 3800 volt. Use low density (foldback) elements. Typical shower bath is 104°F. Turn down thermostats a bit... say 118°F. Higher thermostat percolates more chemicals out of water, and the sediments affect water heater element. Lower thermostat will reduce first hour deliver, but tank can be rewired for simultaneous to increase delivery: Calculate first hour How to rewire for simultaneous operation Hard water, acidic water, and other water conditions contribute to the issue of burn-out. Turn up the water softener, have water tested, install good filter on incoming water. Element advisory: Marathon elements burn out more frequently in some cases. Homes with hard water should install 3800 watt element to reduce sediment, and to reduce problem with elements burning out frequently. Rheem Marathon parts list Removal of sediment is easier with Marathon water heater, because element opening is larger. Full efficiency is restored to all tank-type electric water heaters when sediment removed. Unlike gas water heater, remaining sediment will not affect efficiency on electric since the element sits several inches above tank bottom. Remove Marathon elements using 1-7/8" socket All gas and electric water heaters that are exposed to hard water will form sediment deposits. Calcium-based sediments are not harmful, but must be removed periodically. All water heaters should be flushed every 6 months to prevent problems. Read about sediment and flushing |
 Rheem
marathon element wrenchBuy: 1-7/8" water heater element wrench/ Use screwdriver for handle Professional 1-7/8" sockets Buy socket: 1-7/8" socket with 3/4" drive 1-7/8 sockets at Amazon 24" breaker bar with 3/4" drive |
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Upper
element has a fuse to help prevent dry fire, but Marathon elements are
interchangeable as long as length of element does not conflict with
tank
diameter. Use 1-7/8 element wrench 1.5" UNF straight fine thread not 1" NPSM straight// 12-14 threads per inch vrs 11.5 Read parts .pdf before buying Buy: SP610160/ 4500 watt copper/ Best value SP213670/ 4500 watt SP210197/ 3800 watt SP210201/ 3000 watt SP210198/ 3800 watt SP213480/ 3000 watt SP213540/ 2000 watt SP610130/ 3800 watt SP213820/ 3800 watt SP610140/ 5500 watt SP610150/ 3000 watt Resources Marathon parts sheet/ pdf Regular water heater elements/ identify and replace |
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does marathon water heater have fused
upper elements? Question: Do I really need fused upper element if I am smart enough to never dry fire the upper element? Seems to me its just another part to fail.  Answer 1: Fused upper element is NOT required for tank to operate normally. Fuse is not ordinary fuse that you can reset... it is a resistor that is added inside head of element. Upper element dry fires.. but lower element rarely does. What is dry fire? Element must be covered with water when power is applied, or upper element will burn out. Why only the upper element dry fires? Because 30 amp residential water heaters are non-simultaneous, which means upper element receives power first... so it is first to burn out. With non-simultaneous water heater, the lower part of tank does not receive power until upper element heats first... but if upper element dry fired, the top of tank never gets heated, so lower element never receives power... and tank is cold. Resource: How electric water heaters work Same answer different words: Marathon upper elements are fused to help prevent dry fire. Not 100% prevention... just resistance to dry fire. Elements will instantly burn out if they are not fully immersed in water. Upper element will dry fire, but usually not the lower element. Reason: Marathon is ordinary non simultaneous water heater: Upper element is ON, lower element is ON, or both elements are OFF When tank is empty, the upper thermostat is cold. Thermostats are mechanical bi-metal switches. [They require no electricity. They work with any AC voltage.] When upper thermostat is cold, the bi-metal switch is positioned to send power to upper element. When tank is cold, no power will flow to lower part of tank, until upper thermostat reaches set point. When power is applied to cold tank, power flows to upper element. If tank is not full of water, then upper element dry fires. Lower element is unaffected. When upper element is not working, then tank will not heat any water because lower element will never receives power unless upper part of tank is heated to set point. If upper element is burned out with dry fire, the water heater heats no water. Marathon elements are expensive by comparison to ordinary elements. If you dry fire ordinary element, the replacement cost is $10-20 from local hardware store. Marathon elements are not available at local hardware. Resources: How to wire thermostats How thermostats work |
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says: I think I will get the marathon titanium element for the upper because of the way I use my water heater as a solar energy battery, the upper does come on a lot. Much more so than in a standard instantaneous grid install. Better value? SP610160/ 4500 watt copper/ non-fused/ Best value |
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brands of thermostats are interchangeable $48 for 2 low density 240 Volt 4500 watt elements/ + Upper and lower thermostat  Buy:LOW density kit: Apcom plumbers pack Amazon 110°-160° Resource How to replace elements How to replace thermostats |
$35 for 2 high density 240 volt 4500 watt elements + Upper and lower thermostat  Buy:HIGH density kit: Apcom plumbers pack Amazon Resource How to replace elements How to replace thermostats 110°-160° New water heaters have high density elements. Low density elements might last longer |
$45 for 2
low density 240 Volt 4500 watt elements/+ Upper and
lower thermostat Buy:LOW density kit: Therm-O-disc low density plumbers pack 90°-150° Resource How to replace elements How to replace thermostats |
$45 for 2 high
density 240 Volt 4500 watt elements/ + Upper and lower
thermostat Buy:HIGH density kit: Therm-O-disc high density plumbers pack Therm-O-disc high density Therm-o-disc high density / copper element 90°-150° Resource How to replace elements How to replace thermostats |
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Marathon bushing ... convert to regular element Resource: Marathon bushing |
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Marathon
is ordinary
non-simultaneous residential water heater... except with limited
lifetime tank
warranty for standard duty/ and 10 year warranty for heavy-duty Review Marathon water heater Marathon Upper thermostat Rheem SP310230 Rheem SP210245 30 gallon and larger Marathon Lower thermostat Rheem SP310020 Rheem SP210239 30 gallon and larger Resource Marathon parts sheet/ pdf |
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High
temperature thermostats: Rheem heavy-duty marathon is rated for 170 ℉/
10 year tank warranty These are generic commercial grade thermostats Buy: high temperature thermostat: Upper thermostat Rheem SP8293 thermostat 110° to 170° Camco 120°F to 180°F Lower thermostat Rheem SP8295 lower 110° to 170° Camco 120° to 180°F lower Rheem SP210246 High temperature Marathon heavy-duty comes with 10 year tank and 5 year parts warranty |
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Buy residential
upper and lower
thermostats/ rated 150 ℉/ fits any Marathon 120-240 Volt water
heater Thermostats are interchangeable/ Each works with Marathon water heater 89T is discontinued/ replace with Apcom or Therm-o-disc Buy: 90-150 degree F for residential tank: Rheem UV11698 Rheem SP11698 Camco 08163 Aprom / 110-160° Water heater thermostats at Amazon Camco thermostats at Amazon More thermostats |
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Thermostat protectors fit any therm-o-disc thermostat Protectors cover the electric terminals. When you adjust temperature, or push reset button, covers with protect you from electric shock Buy: SP310040 upper protector SP310010 lower protector |
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Resource: Compare box timers DPDT timers Intermatic Control water heater w/ Z-wave |
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Resource: Intermatic control centers: and parts Digital control centers and parts Tork control centers and parts Subpanels All control centers and parts Enclosures |
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Resource: Programmable timers Countdown timers Off delay timers On delay timers Timer modules Din rail Twin & one-shot Woods Intermatic Tork |
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Recirculation systems |
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