Pump height V res height

Dirk Diggler · 30 Jul 2015 at 11:27

I'm doing a new build and the pump is lower than the res, but only by around 30mm from water level to pump inlet.

I take it once the system is full and bled, the issue of res above pump is irrelevant? Just asking in case I'm missing something obvious.

Also, how much air should we have at the top of the res, as a rule of thumb.

Deathjester · 30 Jul 2015 at 11:33

My pumps are all below my res.

As a preference the water circulation should not go through the air.

I use the BitsPower multi-Z res with the down pipe, and the liquid covers the end of the down pipe to reduce the amount of air mixing into the coolant.

A picture of your setup would be useful to judge it.

BattFink · 30 Jul 2015 at 11:38

You just need to stop the pump from running dry. The rule about placing the res above the pump, just allows mavity to assist

You can have as much air as you want (as long as there's sufficient coolant to maintain the loop). I typically run the res about half full when I'm filling the loop, I then top it up to the brim when the loop is completely bled

Dirk Diggler · 30 Jul 2015 at 11:53

The pump is actually lower than that as it's sitting on top of the PSU. And it isn't upside down any more either!

I mentioned air in res as I always t thought we had to allow some for expansion?

Deathjester · 30 Jul 2015 at 12:42

That looks fine to me!

Dirk Diggler · 30 Jul 2015 at 14:09

Cool, just wanted a second opinion.

Cheers.

paulstung · 30 Jul 2015 at 14:30

looks fine mate, as long as the flow, from the res, can get to the pump, all is golden mate.