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The ratio is 4 to 1. so if the prop band is 4 the integral is 1. I usually put a division block in and divide by 4 so that I just need to adjust the prop band.

I agree, This is Exactly what Trane recommends. Use the Plot function in TGP to help you, also add the feedback input into the PID.

 

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Integral you mean? Just Take whatever your "P" is (hopefully an AV) and run that into a divide block, Divide by 4. Take the output of the math block and run it into the "I". Then adjust your "P" as necessary. to add the feedback input open the PID block properties and check the "Allow Feedback" box. This will open a new slot on the PID called Feedback. Take an Output Status block of whatever AO your using and link that into the feedback.

 

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Make sure that in Rover configuration your Supply temperature is indeed setup to "fail at end of range". There is a little checkbox in the config that needs to be checked otherwise the fail logic in TGP wont work.