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Author Topic: how to eliminate water hammer  (Read 926 times)

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Offline stratford 50

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how to eliminate water hammer
« on: February 10, 2010, 06:56:42 am »
Installed e- classic fall of 2008 tied into system 2000 oil furnace, seem to have lots of water hammer on all 5 zones, changed  1 zone valve and installed a variable speed circulator but still hammering.  Any suggestions would be helpful.

Thanks,
Stratford 50


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Offline beenthere

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Re: how to eliminate water hammer
« Reply #1 on: February 10, 2010, 10:47:21 am »
Have to get the air out.
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south central Wisconsin
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Offline zopi

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Re: how to eliminate water hammer
« Reply #2 on: February 10, 2010, 11:38:17 am »
get the air out and maybe add an expansion/surge tank...
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Offline Jasperfield

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Re: how to eliminate water hammer
« Reply #3 on: February 10, 2010, 09:35:41 pm »
I'd add an expansion tank. You'll need it time & time again.
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Offline coyotebait

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Re: how to eliminate water hammer
« Reply #4 on: February 13, 2010, 04:51:44 pm »
elbows with bleaders at highest area of each zone . Or at each register. When they start hammering crack them a little till water comes out then close ,when done add water to the system to make up room for the lost air.
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Offline slowzuki

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Re: how to eliminate water hammer
« Reply #5 on: August 16, 2010, 08:42:04 am »
If the zone valves open or close too fast with a high flow pump you will get hammer too.
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