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Old 07-15-2008, 06:32 PM
mathew stouffer mathew stouffer is offline
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Expansion Tanks On Cold Water Lines
I thought water heater expansion tanks had to be on the Hot water line. I found two installations today with the tank on the cold water line. The first photo, the tank was connected to the main water line for the home. Any thoughts?

Mat
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Old 07-15-2008, 06:35 PM
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Gunnar Alquist Gunnar Alquist is offline
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Re: Expansion Tanks On Cold Water Lines
I can't imagine that it would really matter. I guess you could refer to the manufacturer's installation instructions.
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Old 07-15-2008, 06:39 PM
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Billy Stephens Billy Stephens is offline
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Re: Expansion Tanks On Cold Water Lines
Quote:
Originally Posted by mathew stouffer View Post
-- installations today with the tank on the cold water line.

Any thoughts?

Mat
.
Both Installation manuals I have show expansion tank on inlet side.

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Old 07-15-2008, 06:53 PM
David Banks David Banks is offline
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Re: Expansion Tanks On Cold Water Lines
This was addressed recently.
Expansion Tank on Hot side
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Old 07-15-2008, 07:58 PM
Jerry Peck Jerry Peck is offline
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Re: Expansion Tanks On Cold Water Lines
They say cold water side, a few may allow on hot water side, however, they also state shorter life if on the hot side, however ...

They should not be mounted with their weight off a tee like that.
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Old 07-15-2008, 10:04 PM
Paul Kondzich Paul Kondzich is offline
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Re: Expansion Tanks On Cold Water Lines
Is that home made connection to the draft hood acceptable?
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Old 07-16-2008, 05:55 AM
mathew stouffer mathew stouffer is offline
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Re: Expansion Tanks On Cold Water Lines
Paul,
The back of that connection was leaking CO.
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Old 07-16-2008, 06:08 AM
Nick Ostrowski Nick Ostrowski is offline
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Re: Expansion Tanks On Cold Water Lines
Leaking because of lack of proper support on the tank or leaking because of all the polybutylene piping?
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Old 07-16-2008, 06:41 AM
John Arnold John Arnold is offline
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Re: Expansion Tanks On Cold Water Lines
Quote:
Originally Posted by Paul Kondzich View Post
Is that home made connection to the draft hood acceptable?
Not even close.
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Old 07-16-2008, 06:55 AM
Nick Ostrowski Nick Ostrowski is offline
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Re: Expansion Tanks On Cold Water Lines
You're such an elitist John.
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Old 07-16-2008, 07:07 AM
John Arnold John Arnold is offline
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Re: Expansion Tanks On Cold Water Lines
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You're such an elitist John.
Yes, but I'm a bitter elitist.
Very, very bitter.
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Old 07-16-2008, 08:17 PM
mathew stouffer mathew stouffer is offline
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Re: Expansion Tanks On Cold Water Lines
What is not even close, I am lost. Yes the PB is in bad shape, even with the copper fittings. The manifold was corroded.
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