pump suggestion

[abcha0s]

I think the closed loop principal would apply.

I think a 1262 would be enough. I don't think it's critical that the flow through the chiller is exact. I think they specify the optimal flow for maximum efficiency, but it would be difficult to match it exactly.

The other thought that I had is that the recommended flow through the chiller probably has something to do with the internal temperature sensor. If you configure the set point a little lower on the chiller and use your Ranco, it might be fine to run with a lower flow rate.

- Brad

[lastlight]

I think I will try and acquire another 1262 to at least give it a shot.

What does the set point do exactly? I haven't had a chance to read through the booklet yet lol. I want the thing to come on at 80 and cool until the tank is 79. Is 80 the set point?

I think I also read about people blowing fuses like crazy when the flow through the unit was not sufficient?

[abcha0s]

That is the set point I am referring to. I forget the details, but you also set the variance. The chiller is more efficient with a larger variance. I don't think it likes the constant on/off duty. They do explain it in the manual.

If your using an external temp controller, I would make sure that you don't set it to turn on and off too frequently. With the apex you can control temp to within +/- 0.2F - However I think that would be a bad idea. I think the minimum the chiller permits is +/- 0.5F

[lastlight]

Oh yeah I see. The ranco works with 1 degree F increments for the sensitivity.