Class 2 control for hvac interlock circuits

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I need to know if there are issues with running discreet controls on hvac at 24v ac in the same conduit as my rooftop 120v power circuits to interlock an exhaust fan with an airhandler
Take note they are powered by a class 2 transformer in the air handler. I would be pulling 600v rated thwn for all conductors
 
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I need to know if there are issues with running discreet controls on hvac at 24v ac in the same conduit as my rooftop 120v power circuits to interlock an exhaust fan with an airhandler
Take note they are powered by a class 2 transformer in the air handler. I would be pulling 600v rated thwn for all conductors

take a look at 725.136.
 
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