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What is this object?

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[#1] Posted: 03/20/2012 - 9:10:04 PM
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This is a water source heat pump in a high rise condo unit.

What is the white-plastic-clad cylindrical object on the lower (inlet) water line? The plastic sheath covers an impenetrable foam cylinder.

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Jim Katen, Oregon
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What is this object?
[#2] Posted: 03/21/2012 - 05:28:20 AM
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Expansion tank? Obviously, that's a guess.
John Dirks Jr - Arundel Home Inspection LLC - MD license: 29827
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What is this object?
[#3] Posted: 03/23/2012 - 02:31:44 AM
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It might be some type of water filter to prevent scale build up on the heat exchanger.

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What is this object?
[#4] Posted: 03/23/2012 - 03:36:40 AM
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It doesn't look like water actually touches the device- it looks like the piping passes through it.

I couldn't find a photo of the exact unit but a few that were similar returned when I searched "magnetic boiler descaler"

Chad Fabry
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What is this object?
[#5] Posted: 03/23/2012 - 07:16:00 AM
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I looked like the water pipe passed right through this object.

The outer white shell was styrene plastic and held on by velcro. When I removed it, I saw a cylinder of dense, hard foam and no obvious way of dismantling it further.

A small multi-conductor cable passed from the heat pump into this foam.

If it's a descaler, why encase it in foam?

My hunch is that the foam is there to provide thermal insulation. But if so, why?

Jim Katen, Oregon
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What is this object?
[#6] Posted: 03/23/2012 - 07:46:26 AM
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Maybe there's a temperature sensor in there being insulated by the foam?
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What is this object?
[#7] Posted: 03/23/2012 - 12:24:14 PM
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Quote: Originally posted by David Meiland

Maybe there's a temperature sensor in there being insulated by the foam?


Possibly. But if they wanted to know the temperature of the incoming water, why not just put an internal sensor in the unit? Why measure it a foot outside the unit? And why the monster foam insulation?

Jim Katen, Oregon
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