Gabe Posted May 5, 2011 Share Posted May 5, 2011 I'm getting ready to hook up my chiller for the first time. I was thinking about turning on the circ. pump at say 80 with my controller and setting the chiller at 80.5 . This would keep the circ. pump from running when not needed, but still provide enough flow before and after chiller setpoint to avoid any freez-up issues. Anybody see any problems with this? Let me know if there is a better way. Thanks Gabe Link to comment Share on other sites More sharing options...
Gabe Posted May 5, 2011 Author Share Posted May 5, 2011 Calling all chiller experts...... Anyone:) Link to comment Share on other sites More sharing options...
impur Posted May 5, 2011 Share Posted May 5, 2011 I don't run a chiller but i'll try to help. If the pump turns off at 80 and the chiller at 80.5, wouldn't the chiller still be running with no water going thru it? Link to comment Share on other sites More sharing options...
Gabe Posted May 6, 2011 Author Share Posted May 6, 2011 My idea is as the temp ramps up the pump turns on at 80, putting water in the chiller. At 80.5 the chillers thermostat turns on the compressor. When the temp drops below 80.5 the compressor shuts off. The pump will continue to run untill the temp drops below 80. I know I may have to experiment with temps, since the two thermometers may not match exactly. Just looking for anybody who has done something like this before to learn from. Thanks Gabe Link to comment Share on other sites More sharing options...
MVPaquatics Posted May 6, 2011 Share Posted May 6, 2011 I think you are on the right track but I would probably go a bigger difference than .5 degrees to avoid possible issues...like you said they might not match exactly Link to comment Share on other sites More sharing options...
Lowman Posted May 6, 2011 Share Posted May 6, 2011 it is best to keep flow running through the chiller, that way if it doesn't run for a while, the water doesn't turn stagnant and mess up your system, or worse yet, damage your chiller. I have my chiller come on at 79 degrees and go off at 77.5. heater goes on at 75 degrees and off at 76.5 Link to comment Share on other sites More sharing options...
Harold B Posted May 6, 2011 Share Posted May 6, 2011 + one Make sure that water is flowing long enough (after it shuts off) for the coils to get back to ambient temp. And remember if you don't have some sort of failsafe you are risking ruining your chiller, in the event somthing for some reason doesn't do what it's supposed to. Lord knows it happens to us all. Link to comment Share on other sites More sharing options...
Gabe Posted May 6, 2011 Author Share Posted May 6, 2011 Good point... hadn't thought about the water just sitting in there. The more I think about it, the chiller will be in the garage and could reach a higher temp without the water flowing. Not good. All this to try and save 37 watts/hr. Probably not worth it. Thanks again, Gabe Link to comment Share on other sites More sharing options...
reefboy Posted May 6, 2011 Share Posted May 6, 2011 I agree with above dont shut the pump off Link to comment Share on other sites More sharing options...
racefan Posted May 8, 2011 Share Posted May 8, 2011 I agree with above dont shut the pump off X2, I keep my water running through my chiller all the time. Link to comment Share on other sites More sharing options...
Algae Posted May 17, 2011 Share Posted May 17, 2011 X3 with circ. pump on all the time. Depending on your controller you do not want the on/off cycle to not have a vaience in temperature. A set point o( 80.5 will have the chiller cycling to much. You need an on/off difference in temps. Please forgive me if you are already aware of this. Sent from Tapatalk while sitting on a commode Link to comment Share on other sites More sharing options...
Bicyclebill Posted May 24, 2011 Share Posted May 24, 2011 I've got mine in series with my GFO reactor, so the pump is going all the time. It's just a maxijet 1200 so power isn't crazy. I run it direct without being controlled by my reefkeeper. Link to comment Share on other sites More sharing options...
Gabe Posted May 25, 2011 Author Share Posted May 25, 2011 Thanks guys. I hooked it up with its own pump independent of the controller. Chiller is set at 81. Gabe Link to comment Share on other sites More sharing options...
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