this post was submitted on 05 Feb 2026
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I'm the installer lmao. We got a system with an high power pump cycles every loop multiple times and dumps it in an open container before we connect the heat pump
Is there anything a guy can do about a system like this that gets loud as hell whenever a certain loop is active?
Flushing it helps, try closing the return side to the system and drain water from the manifold while also filling it from your heater, hope you got a drain nearby tho because you gone flush every loop by its on for bit after and presumably you did it right and long enough the air should be gone and it's as quiet as it gets
Awesome. Thank you for sharing!
Thank you for actually doing your job!
What is the final fill liquid? Is there an anti bio/anti corrosion agent?
Just desalted water from our osmosis machine
Not worried about anything growing in there?
I mean it's an "airless" closed loop with 95% clean h2o. The water may gets darker after time from bacteria dieing but there will probably never grow anything concerning
Is there any reason you won't add an anti microbial additive, like antifreeze or something? We usually add stuff in computer water cooling loops, but I'll grant that microfin heatsinks are much easier to gum up, but still, not sure there's a downside.
I build a few water-cooled systems in my life and I know where you're coming from but this is a bit different, instead of fins a heat pump uses a plate heat exchanger and all pipes are at least 22mm wide, a thin bacteria film would do basically nothing in the grand scheme also because it's desalted water there are just a few bacteria colonies left that gone die in an "airless" (in quation because it's in an engineering sense airless not in an physical sense) system without any food in a few weeks to days. Also an anti microbial agent could be aggressive against some materials in the loop and one that isn't should be rather expensive. Especially in that volume of water. We're talking about an office building with an attached workshop. Together with the buffers it should add up to 3000l of water in circulation. Having roughly 10% of an agent that is probably expensive and really doesn't do anything would be not that efficient.
TL:Dr: cost/efficiency factor isn't there to begin with
So, dumping it into an open container is a way to remove bubbles from the line? You wait for the water to come out without bubbles, and that means the line is full? How do you connect the pump without introducing bubbles? Is it submerged in the open container? Then you pull the line down into the water as it's running and connect it?
It's an open container and a submittable pump (usually used for lifting ground water from 100m) that pumps it from the bottrem of the container into the loop and when it comes back from the loop it gets dumped on top of the water line, since the pump transport around 3500l/h we let a single loop with roughly 5-15l circulate for roughly 15mins before we switch to the next (English is my second language so please ignore the grammar mistakes)
Submersible pump, I think you mean. Good on you learning English, it's hard.