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Old 11/12/2005, 01:17 PM   #1
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Join Date: Sep 2003
Location: New Hampshire
Posts: 50
ACIII programming question

I have a pump that feeds my chiller. Obviously, I need the pump to be on whenever the chiller is on. Right now, I have the pump turn on if my temp exceeds 79.7. The chiller then turns on at 80.1. They both turn off together when the temp drops to 79.5.

Is there a way to (in addition to what I've done above) have the pump osc on for 30 mins every 4 hours BUT to over-ride that depending on what the temp in the tank is?

Basically, I want it to run for 30 mins every 4 hours UNLESS the chiller is going to be on, in which case the pump needs to be on.

How would I code something like this?

Thanks in advance.

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Old 11/14/2005, 11:51 AM   #2
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Join Date: Aug 2001
Location: San Jose, CA
Posts: 4,311
I'd do something like this:

OSC 60/180 ON/OFF Then PMP ON
If Timer COL = ON Then PMP ON


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