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Old 06-08-2004, 03:41 PM   #1
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pump chiller set up

below is a rough drawing on an idea to set up a pump & chiller. Can/should it be done this way?

All thoughts/suggestions are welcome
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Old 06-08-2004, 03:44 PM   #2
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is the tank drilled as sketched? If so then your plan should work ok. What kind of chiller are you using? is it a DIY?
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Old 06-08-2004, 04:01 PM   #3
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it's a 60g tank, Mag 7 pump & an Aqua Logic DS2 chiller. the tank is sketched in the upper right w/ the outlet/drain on the far left & inlet/return to the right.
Water direction arrows are as shown, of course.

Would it be OK to put a ball valve after the pump before it goes back into the tank to control water flow or would that be too much preassure for the pump?
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Old 06-08-2004, 04:39 PM   #4
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I would think a Mag7 would be way too much pump for that unless there was some serious head height to contend with. Remember, a chiller needs to contact the water as long as possible to cool effectively. If the flow is too fast the water will not get cooled efficently and the cooler will be a wasted effort.
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Old 06-08-2004, 05:25 PM   #5
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as far as flow rate, you want a happy medium. You want it to be in the chiller long enough to be cooled, but you don't want it getting chilled too much. (it would be like adding cold water directly to your tank) Of course, perhaps you chiller has safeguards against that. A good one probably will. I ball valve is never a bad idea, for maintenace if nothing else. And as far as back preasure on the pump, it depends on how far closed you think you'll have it. How much head height is there going to be between the pump and the top of the tank where the water returns to the tank?
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Old 06-08-2004, 06:01 PM   #6
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Billy, the head height is approx 4 feet.
We'll probably get a Mag 5 & see how that works for flow. The ball valve is always going to be an option depending on the water flow.

Thanks for all the suggestions!
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Old 06-09-2004, 10:12 AM   #7
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There is a chart out there somewhere that gives the flow rate for the mag pumps based on head height.... [googling]... Ding. Gotta love google heh... we need a "i'm currently googling" emote

so, back on topic, a mag 5 @ 4' will give you apx 310 gph. Thats with an optimum flow, bends, elbows etc will slow that down a little, but I think 300gph is a good estimate to work with. Does your chiller have a "recommended flow rate" ?
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Old 06-09-2004, 03:05 PM   #8
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Accroding to Marine Depot, they give a flow of 6 GPM minimum and DFS (Doctors Foster/Smith) website, they give a flow of 360 GPH minimum. That being said, it looks like the Mag 5 is on the low end of this minimum?
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