Replacing anode rod
kookoo2
14 years ago
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14 years agokookoo2
14 years agoRelated Discussions
How long should a water heater last?
Comments (13)According to the report in the Consumers Reports Magazine the average lifespan of a water heater is 12yrs. Code requires that whenever a water heater is installed over a floor or flooring materials that can be damaged by water the water heater must have an approved pan with a 3/4" drain line terminated into an approved "indirect waste receptor". The TPRV must also have a full bore line drain line which will drain by gravity flow to an approved indirect waste receptor. (The TPRV may not terminate into the pan). The preferred method of installing a water heater is to place it near an outside wall on the ground floor and both the Pan drain & TPRV drain lines are extended through the outside wall and terminate on the ground outside in a conspicuous place. The end of the drain lines must point downwards and there can be no fittings or threads on the end of the line. (The drains may not be concealed behind shrubbery.) Solid, liquid or gasseous fired water heaters may not be installed in a bathroom, bedroom or any room which opens directly into a bathroom or bedroom. In a situation where a water heater is installed in a basement and the house main drain exits the structure above the basement floor where a gravity flow floor drain cannot be achieved we remove the TPRV valve. For electric water heaters the opening is plugged and for gas water heaters we install a WATT's 210 gas cutoff valve. A Pressure relief valve is then installed at any convenient location on the first floor and it is discharged through the wall outdoors. When a water heater is installed in an attic space there is a long, long list of additional requirements...See MoreHot Water Heater Noise, Plumber Missed-diagnosis
Comments (1)Do you have an expansion tank? And do you have a Pressure Reducing Valve (PRV). Both the tanks and the valves often give out after about 10 years. I started getting weird noises in my water system after my house was about 8 years old. I checked the water pressure downstream of my PRV and it was high, and couldn't be adjusted downward. I got a PRV rebuild kit and was once again able to adjust the pressure. I then checked the expansion tank, and that wasn't functioning properly either, so I replaced it. The result was proper water pressure in the house and no more strange noises. I don't know if this is a fix for you, but it's one possibility....See MoreReplace Sacrificial Anode Rod in 11 year old water heater or not?
Comments (4)If you have a softener that is giving you zero hardness water and you've been draining your WH annually don't mess with the anode rod. My WH is 18 years old and no problems....See MoreDisolving water heater anode rod
Comments (14)"Electrolosys is a result of an electro-chemical reaction between to dissimilar metals and it takes place solely at that point of contact." Yes and no. Ions must flow in the water to carry the current. Either breaking the conductive path in the pipe (dielectric union) or in the fluid (usually impossible) will greatly slow it. Ships use large zinc anodes, or even a low DC voltage to counteract the couple generated with the water (and the salt supplies all the ions needed). It only takes a few volts to cancel the induced couple. "It does not in any way generate a current through the piping system nor is it a result of a current from another source passing through the piping system therefore adding or removing grounding wires from the piping system will have absolutely no effect on electrolosys reaction." The current is usually localized, but depending on how many ions are available in the fluid and the couple you can have weak currents generated or even some pretty hefty ones, think car battery in a strong electrolyte. Acids, bases, and salts acan all make a strong electrolyte solution. AC voltages and currents typically have very little net effect. The constant reversing of the current direction puts back what left in the previous portion of the cycle. It can make for very interesting joints though as the process is not exactly perfect. DC voltages and currents can accelerate corrosion. Back to the ship example. Good anti-corrosion equipment adjusts the voltage until the current from the electrode is very small. This prevents either the hull or the electrode from loosing much mass, but errors should go towards eating away the electrode. And yes, when you are moving things start to change and the devices are less effective....See Moretim45z10
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