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Modeling electric resistance heater in CBECC

asked 2024-09-21 18:08:32 -0600

Abdul1236's avatar

updated 2024-09-22 11:54:45 -0600

Aaron Boranian's avatar

I am trying to model electric unit heater for a stairwell in CBECC Non-Res 2022 but for some reason when I use 'furnace' as my zone system and create a heating coil(electric resistance) with a fan, the output report spits out that there is a no cooling system for that stairwell and assigns it a random cooling coil capacity. It seems that the software is thinking that there should be a cooling happening although there is none. I have tried unchecking the box where it says 'add cooling system to meet the load' but no luck. Please guide if you have any idea.

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answered 2024-09-23 10:03:31 -0600

LukeInCali's avatar

In general, all conditioned spaces are evaluated in both heating and cooling for compliance purposes. So yes, your stairwell will have a dummy cooling system added to it even though there's nothing installed in reality. I don't have this part of the ACM memorized, but it's going to be an autosized cooling system matching the Standard Design system type and ratings.

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Thanks for the insights. I see. So it’s fine to leave it as auto sized as is right now? I was wondering if I needed to get rid of it but seems I cant. It’s not bothering in terms of overall compliance results or UMLH.

Abdul1236's avatar Abdul1236  ( 2024-09-23 13:32:01 -0600 )edit
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Asked: 2024-09-21 17:02:46 -0600

Seen: 83 times

Last updated: Sep 23

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