Pump and Chiller advice

[IAReefer]

So I just hooked a chiller and mag drive pump to push water through it. So my question is, do I let the pump run the whole time, or do I only run it when the chiller is going to be ran?

I have the chiller setup to turn on at 79 and turn off at 78. So should I just have the pump turn on at 79.1 and turn off at 77.9?

Thanks in advance for your help and advice.

 

[aquamanic]

I run my chiller pump 7x24 and cycle the chiller based on temp. I didn't want water stagnating in the tubing.

 

[schwaggs]

I only run my chiller pump when my chiller runs and for an additional couple minutes after the chiller stops. In addition, I use an OSC command to run the pump for a minute every day to flush the chiller and plumbing just in case the chiller doesn't come on in a day (never actually happens with my system). If you are using an Apex, the pump commands would look like this:

Fallback OFF
OSC 700:00/001:00/739:00 Then ON
If Outlet Chiller = ON Then ON
Defer 002:00 Then OFF

 

[IAReefer]

Thanks for the response guys, I guess I am reading this a little late. I will add the OSC command to my pump, but even in the dead of winter here, my chiller is turning on daily.

 

[IAReefer]

I only run my chiller pump when my chiller runs and for an additional couple minutes after the chiller stops. In addition, I use an OSC command to run the pump for a minute every day to flush the chiller and plumbing just in case the chiller doesn't come on in a day (never actually happens with my system). If you are using an Apex, the pump commands would look like this:

Fallback OFF
OSC 700:00/001:00/739:00 Then ON
If Outlet Chiller = ON Then ON
Defer 002:00 Then OFF

Could you post your programming for both the chiller and the pump outlet?

 

[schwaggs]

Could you post your programming for both the chiller and the pump outlet?

Sure:

Pump
Fallback OFF
OSC 700:00/001:00/739:00 Then ON
If Outlet Chiller = ON Then ON
Defer 001:00 Then OFF

Chiller
Fallback OFF
If Temp_S > RT+0.5 Then ON
If Temp_S < RT+0.2 Then OFF
Min Time 010:00 Then ON