AFN and Heating - Excessive ventilation volume triggers Heating Setpoint

asked 2019-02-07 07:43:08 -0500

updated 2019-02-07 12:52:10 -0500

Hi all,

I´m running into a problem of coordiation between the AFN and an Ideal Loads Heating system. While in the past I´ve always controlled it by setting the setpoint for window operation 3-5 degrees higher that the Heating setpoint, in this case it becomes problematic even with +7-8ºC.

In a more detailed way, when the temperature inside reaches the Window opening setpoint (27ºC), the intermediatte windows open slightly which causes the temperature inside to drop by more than 4ºC, activating the heating system (23ºC setpoint). I´ve also tried to - unrealistically - set the window opening at 30ºC, but doesn´t really improve the situation.

Probably a graph is worth a thousand words:

image description

Both the living room and kitchen are heated, whereas the Wintergarden is not:

image description

I´m also attaching the simulation folder here, in case it helps solving the problem.

I´m aware the issue is opened in Github by Aaron Boranian, hopefully someone has a work around in the meantime.

Thanks! Rafael

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If addressing that GitHub issue would help you out (and it sounds like it would), please go upvote it so that it'll be addressed sooner.

Jason DeGraw's avatar Jason DeGraw  ( 2019-02-07 11:37:23 -0500 )edit

Thanks for the suggestion Jason. I can't find how to upvote it, so I've added a reaction to the Github issue from the company's account. Hopefully there is an alternative meanwhile.

rafael.alonso's avatar rafael.alonso  ( 2019-02-07 12:59:56 -0500 )edit

Sorry, the thumbs up reaction is what I meant, I should have been more specific. I am not aware of a workaround, but that does not mean that there is not one.

Jason DeGraw's avatar Jason DeGraw  ( 2019-02-07 16:02:14 -0500 )edit