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Old 09/13/2017, 12:31 PM   #1
StinkinTuna
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Chiller pump plumbed to 'outline' of chiller ok?

Planning on chiller plumbing and had a question if this is ok or not:

Is it allright to have the chiller pump suck water through the chiller instead of pumping water into it? In other words chiller pump hooked up to the outline of chiller?

My thoughts are to have the inlet of the chiller come from a split from the inlet to the sump. This would feed directly to the chiller and then put the chiller pump into the sump return chamber. The main return would then pump the chilled water back to main tank along with regular sump return water.

Doable, recommended or aint gonna work?


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Old 09/13/2017, 01:24 PM   #2
scuzy
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Not sure might run into problems I just never seen it setup like that.


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Old 09/13/2017, 01:47 PM   #3
ca1ore
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Pprobably not recommended. Most pump manufacturers advise against having 'friction' on the suction side.


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Old 09/13/2017, 04:05 PM   #4
der_wille_zur_macht
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Also generally a bad idea to hard plumb to drain lines.

I like your theory but it should not matter. The tank water will be circulating quickly enough through the sump in a typical system that the temp will be well equalized. Plus it might not be a good idea to have the coldest water dumping right on your livestock anyways, every time the chiller kicks on or off. You want stability in the display.


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Old 09/13/2017, 05:44 PM   #5
thegrun
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That's a big no! Cavitation will ruin your pump.


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Old 09/13/2017, 06:46 PM   #6
StinkinTuna
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Ok thanks everyone, ill plumb it a more traditional way. Sounds like using the pump to suck water through the chiller is a no go. Thx!


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Old 09/14/2017, 01:50 PM   #7
windlasher
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Quote:
Originally Posted by StinkinTuna View Post
Planning on chiller plumbing and had a question if this is ok or not:

Is it allright to have the chiller pump suck water through the chiller instead of pumping water into it? In other words chiller pump hooked up to the outline of chiller?

My thoughts are to have the inlet of the chiller come from a split from the inlet to the sump. This would feed directly to the chiller and then put the chiller pump into the sump return chamber. The main return would then pump the chilled water back to main tank along with regular sump return water.

Doable, recommended or aint gonna work?
I wouldn't. Most pumps are not self-priming which means if air gets in there you will have a pump and a chiller running dry probably destroying both. You always want the chamber in a chiller full of water before it is turned on.


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