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Junyuan 02-14-2012 02:32 PM

How to drain the hot water every 60 days to get rid of the lime deposit
I have a gas heater and it is required to drain at least a pail of water from the drain valve once a month to get rid of the deposit. I haven't done it since I moved in the house in 2008. I turned off the gas and opened the drain valve. But the cold water was running out from the drain valve, not the hot water ! strange to me. I am the first time to do this kind of job. Thanks for any suggestions.

TarheelTerp 02-14-2012 05:55 PM

One of these is bound to help:

user1007 02-15-2012 02:39 PM

Remember heat, including hot water rises. Your system may have safety mechanisms so you do not get hurt flushing the system.

You may need to add chemicals to get rid of the deposits. They are dangerous and even if you get them, you might want to call a pro. Or make sure you have gloves and protective clothing.

Generally you flush any system until the water runs clear or close to it. I have never heard of one that suggested a single bucket could do the trick.

If you have water with heavy mineral deposits, you might want to think of some sort of filtering or conversion device on the front end of your water heater or heat boiler. I used to plow through water heaters every couple of years until I modified things.

spinfisher 03-16-2012 01:08 PM

Usually it only takes a few minutes to flush whatever might be in the bottom. When I do mine I just open the drain (after I hooked up the hose), run it, close the drain and roll up hose.
I've replaced the drain valve with a ballcock valve so I get a good full flush, I'm thinking about plumbing the drain to my planter out front because I'm getting tired of rolling in and out the hose.

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