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Old 10-06-2011, 02:41 PM   #1
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replacing hot/cold water lines ontop of hot water heater tank


dose anyone know how to change the hot/cold water lines on top of a hot water tank....my brother in-law put them in an they are getting all corroded with calcium deposit and turning green rusty color ...the tank is only a few years old... on the out side pipes are copper going into black pipe on top of hot water tank i thought i would get new lines an replace them, but do not know how do i need to shut it off the gas and drain the tank?... any help would be thankful...
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Last edited by rickwest59; 10-11-2011 at 12:27 PM. Reason: have pictures
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Old 10-06-2011, 02:51 PM   #2
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replacing hot/cold water lines ontop of hot water heater tank


A picture would help----If flexible lines are permitted this is a fairly simple job---turn the dial to vacation or off--no need to turn pilot off---

Drain only a little out of the tank so that the water doesn't run out on top of the tank---

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Old 10-06-2011, 08:24 PM   #3
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replacing hot/cold water lines ontop of hot water heater tank


yes I agree with oh mike...if local code permits flexible supply easy job...make sure of this 1st.. and remember to shut off water valve

Last edited by ben's plumbing; 10-06-2011 at 09:06 PM.
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Old 10-06-2011, 08:29 PM   #4
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replacing hot/cold water lines ontop of hot water heater tank


Usually you don't have to turn the gas off & drain the tank. Just shut the main water off or the gate valve off if you have one, should be on the in side. You can drain some of the water from the tank, to relieve pressure. Don't relieve the pressure by using pressure relieve valve, you might have to replace it afterwards.
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Old 10-06-2011, 09:01 PM   #5
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replacing hot/cold water lines ontop of hot water heater tank


like said you don't have to drain the tank...put the knob on the gas valve to PILOT positon then shut the cold water feed to it,and then place a bucket under the relief and blow off the pressure leave the pin (on the relief) in the horizontal open postion till your done.copper will turn green might consider just wire brush the other crap off nothing is leaking is it..
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Old 10-11-2011, 07:58 PM   #6
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replacing hot/cold water lines ontop of hot water heater tank


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Originally Posted by oh'mike View Post
A picture would help----If flexible lines are permitted this is a fairly simple job---turn the dial to vacation or off--no need to turn pilot off---

Drain only a little out of the tank so that the water doesn't run out on top of the tank---
i sent some pic's today....sorry for the delay... can i change the copper lines out with the stainless flex lines or do i have to go bak to copper you can see how corroded the got..... the black pipe going into the tank is pretty nasty 2 its only been about 4 or 5 years we must have some very hard water...! i know ther is to be a nylon spacer between the line connection that's what i heard...
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Old 10-11-2011, 08:11 PM   #7
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replacing hot/cold water lines ontop of hot water heater tank


the cold on the right looks mint you can see what heated water will do to the left one...remove it clean up the male female teflon,leak lock it and you good unless you want to hard copper them...if you remove that hot water one check into the heater opening wher you unthread the hot out of...might have mineral deposits retricting the hot hater out.the fittings on the tanl are steel copper and other metal types cause electolosis as seen coming down the copper one.
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Old 10-11-2011, 08:28 PM   #8
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replacing hot/cold water lines ontop of hot water heater tank


anyone ever run CLR threw the tank to clean deposit from inside the tank and lines....Tank has a 10 or 15 year warranty ..it only 5 years if that...can i put a stainless line on it or do i have to stick with copper line?
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Old 10-11-2011, 08:37 PM   #9
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replacing hot/cold water lines ontop of hot water heater tank


Your stainless line will be fine----

Don't add any cleaners to the tank----you'll dislodge enough bit of crud to ruin your toilet guts and faucets.
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Old 10-11-2011, 09:05 PM   #10
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replacing hot/cold water lines ontop of hot water heater tank


you have been a great help..... bathroom is next slow drain in tube we are going to remodel bathroom this winter..... roof is going on Thursday just me an the wife live here guess we are going to kick the bucket here.... kids are are all grown up.... cheaper to fix this old house now than move... since we are under water with the mortgage..... which i do not believe .... cause of our great government financial system... the say we lost equity hahahahh! again thanks for the help....
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Old 10-11-2011, 09:09 PM   #11
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replacing hot/cold water lines ontop of hot water heater tank


Welcome to 2011-----Make the place nice for your own enjoyment -----What else is there to do?

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