Not enough heat during Night Cycle

asked 2026-05-28 17:47:45 -0500

I have 2 AHUs in a school which are heated by night cycling instead of perimeter baseboards. I've been experimenting with the gym system (was a multizone and I've cut those off for testing purposes to make it a single zone system). The night cycling manager is on to help the AHU turn on when it gets below the 18C setback. Even following through on this link (https://unmethours.com/question/44877...), I can't get the lack of heating after school hours to work. I think that the fans are having trouble increasing to a level which will supply enough air at night. The natural gas heating from the coils is running.

Does anyone know of a way to 'increase the heat flow' at night? Apologies as I don't have enough karma to drop an image into the question.

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