How to replace hot water tank anode?
Cut the water supply off and relieve system supply pressure. Unscrew the anode and replace it with the new one and a samll amount of plumbung sealent.(as if you didn't know that - sorry)
7 people found this useful
How can you eliminate a hydrogen sulfide odor in the water from a new hot water heater even after the anode has been replaced with an aluminum one?
You need to replace the aluminum anode with a zinc/aluminum alloy anode. ANS 2 - If a hydrogen sulfide (or rotten egg) odour exists around your water, it's often an indic…ator of excess iron in the water supply. This can be bad for your plumbing. I would advise taking a water sample(in a sterilised bottle) to a lab and have it analysed. If the iron content is very high you may well have to fit a softener or an iron filter. BTW - changing the anode is an excellent idea anyway. Just may not be the solution.
By use of an automatic bleeder valves using nonferrous metals and approved fro the higher working pressures
\nYou probably haven't re-opened the cold water inlet valve.
What type of hot water tank? Is it vertical or horizontal, roof or wall mounted? brand and size? electric or solar? Replacing a Hot Water Heater is not recommended. A qualifi…ed and registered plumber should always be called when replacing such a unit, taking a chance and doing it yourself, puts your life and the people in the home at risk, a Hot Water Heater can explode and kill people if connected incorrectly. Please be very careful.
Is it switched on? is the filter clean? is the element and thermostat working properly?
It is the "sacrifice" part of a corrosion protection system:. When two different metals are connected between them and are contacted by a electrolyte (water with dissolved io…ns), a small electric current is generated by them (thats how an electric battery is constructed) and one of the two metals corrodes (the anode or less noble of the metal pair). To protect an iron tank from corrosion you can connect to it a magnesium anode, in this metal pair the magnesium will corrode, thus protecting the iron from corrosion.. If a copper pipe is soldered to the iron tank will produce the opposite effect, that is, as copper is more noble than iron, the anode will be the iron and it will corrode
current= area of surface x current density required / 1000 , weight of zinc anode = current x life of anode (4yrs) x 8766 / 780
Aluminum and zinc are close enough not to cause too much trouble. In highly electrolytic solutions there will be a voltage potential between them. Different metals should… be avoided if at all possible when in contact with water or solutions.
Zinc anodes can help protect buried water tanks or any buried steel structure from external corrosion. The use of zinc anodes protect a structure from corrosion by a principle… is known as cathodic protection. Corrosion is an electrochemical reaction where the reaction can be separated into two halves (two half-cell reactions): the anodic and the cathodic reactions. Deterioration (or corrosion) of the metal occurs at the anode. When zinc is in electrical contact with the steel and immersed in the same liquid, the zinc become the anode and the steel structure becomes the cathode. The zine is preferentially corroded, leaving the steel structure protected. To protect a steel tank, the anodes should be buried and evenly distributed around the tank. Deep anodes are sometimes needed to protect tanks with large flat bottoms. The holes around the anode are often filled with carbon to ensure good electrical contact with the ground water. Electric cables need to connect the zinc anodes to the steel. The anodes do not protect against internal corrosion of the tank.
About 2-3 hours labour involved. Figure out from your local plumbing rates.
To prevent the heat dissipating.
No, they are rigid.
it is a tank that preheats water and holds until you use it
It is posible to buy a replacement stainless steel hot water tank. There are many retailers available online with competative prices to suit your needs.
All hot water tanks have rust after 4-5 years. If you are a sensible homeowner, drain and clean it every 3-4 years. You first turn OFF the power to tank, now remove the anode… rod, ( a large bolt head on top of the tank, attached to what may remain of your rod) . then attach a hose pipe to the bottom fitting, lead it outside or to any drain, turn on the valve by it, turn OFF your inlet valve and open the relief valve so air can enter the H/W tank. Let the whole tank empty -takes about 30 -40 minutes. Next, when empty turn ON the inlet valve and let cold water run through the tank and out the hose, now you will see the sludge coming out. Let this run 5-7 minutes or until water is coming through clean. Now you are done . Let it fill, and fit new anode rod as it fills ( weight of the water helps) then turn on power when full.