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Thanks for your kind comment!!

That is a very good question. This depends on the performance of the equipment under certain conditions. Refer to the performance tables of the outdoor unit. Please let me know hoe it goes and if you find it. Otherwise depending on the location we assume 0.7 or 0.8...

Thanks for your comment. The link for importing floor plan pdf as follows: ruclips.net/video/YGJByMT5kGI/видео.html.

I cant even select it, i can drag a box over it to "select" it, but i can do nothing with it after that.

@@builderman912 there are some glitches that happen from time to time in wrightsoft. Try closing the file, or restarting your computer. If nothing works you will have to start a new project and transfer your floor layout (right draw) through creating catalogs. I made a video about this process. Link: ruclips.net/video/TsuAdLxpuJs/видео.htmlsi=VXJoCCW0BTO7rrXz. I hope this helps

I am currently out of the USA, but I’ll be back by next week. We can chat through my email hvaceasymath@gmail.com

nevermind i see this question has been asked.

No worries. Thanks you 👍

I agree. You can add an annotation at each door to represent “undercut” otherwise there should be Transfer Grilles. Usually we assume undercuts, however, in AutoCAD mechanical drawings the undercut symbol should be put for the mechanical floor plans.

@ undercut at least 2 inches for air transfer so not the way to do.

​​⁠yup, I agree. 3/4 or 1 in max to allow no more than 100 cfm or 75 recommended. In this case transfer grilles would be better or better yet jump ducts.

Thanks for your kind comment!!

Yup, it is always a good idea to have double stage or modulating for energy efficiency, however they are more expensive.

Thanks for the input.

Thanks for the comment, could you elaborate on that please?

@@hvaceasymath i was just commenting on your joke around the 4 minute mark

lol gotcha, thanks!!

Thanks for your kind comment!

Thanks for your input 👍

Great question. You can directly add a line under annotations with a damper symbol (L shape) and text indicating ZN1 and ZN2. I don’t see Wrightsoft adds this automatically.

Thanks for your comment. You can add fresh air on the zone information under central vent. The same way we add ventilation overall (you can see this video as reference: ruclips.net/video/fxSSDpOkZwQ/видео.htmlsi=wdjc-dHsGTapHjUT). We have there options: Outside Air, HRV, and ERV. Hope this helps. Regarding to zoning, On Monday I will post a new video 👍.

Thanks for your comment. The table is something I created in excel and took a screen shot to explain the internal loads. Unfortunately it is not part of the program. Every home builder has their own tables and requirement for internal loads. However most of them refer to Manual J guidelines.

Thanks!

I saw this glitch before. I usually use the keyboard to adjust this when this happens (not dragging it). Otherwise. Close the program and open it back again to see if this works. Let me know if it helps

Thank you for your kind words! Will do.

Absolutely. My best suggestion is to watch my playlist of different house type, like condos, 1 story home and so on.

That is a great suggestion. I’ll make the video for next week.

@@hvaceasymath Thanks. Not really sure how to show dump zone/bypass damper for the extra air. I enjoy your videos.

Thanks for your kind comment!

Thanks!

Thanks for your kind comment

Thanks for your comment! Could you elaborate more…? Thanks

Thanks for your kind comment. That is a great suggestion for future videos!

Thanks but now I stuck in this situation where my basement height is 8 feet and out of which 2.7 feet below grade . Below grade it's concrete with 4 inch furred out wall and above grade it's 2x6 wood . How to put those .

@@asfanjagirdar1553 that is a very good question. I would suggest to reach out to helpdesk (link: www.energycodes.gov/technical-assistance/help-desk). They are very helpful but at times they take 1 or two days to respond. Let me know how it goes!

Great question. The volume is in ft3, and sensible heat in BTU. However, since we are taking about airflow we take into account time (which is in Hr or Min) and also sensible heat rate which is BTU/ h. As you can see, if we divide heat by time (Hr) then we need to divide the volume by time (min after a conversion factor of 60). Hope this helps.

Thanks for your kind comment!

Thanks for the comment. Could you elaborate a bit more..? Thanks!

@@hvaceasymath for house plans that have double line walls, how do i draw over the pdf to get the same width?

@@RamSalinas-v6p ​​⁠sometimes that is a bit tricky, especially in the basements where the foundation is and the walls are concrete thick. Generally, I try to draw in the middle of the wall between the two lines. However I tried to maintain the overall dimension of the perimeter of the house which is exterior of the wall dimension. Keep in mind, we are safe, being conservative, so taking the exterior wall (the exterior line not interior line of the wall) of the perimeter works best. If you only take the interior side of the wall you would end up with smaller overall area.

Thanks for your comment! I will make a video in the future about Zone Air distribution Effectiveness. This basically indicates how efficiently a system delivers air to the breathing zone. There are different configurations depending on the diffuser locations.

@@hvaceasymath Thank you so much for your kind responses.

Great question. Diffuser are generally better for air distribution and energy efficiency.

Thanks for your kind comment! I will make a note of that.

Glad it helped!

Thank you! I’m glad!

Thank you!

Thank you!!

@@ICEEFRENCHKISSES thank you! I’ll keep on making more.

@@Karf5544 thank you so much for your kind comments!

Thank you!

Thank you!

Absolutely. This is for ASHRAE handbook Fundamentals 2021, chapter 18, table 1. Let me know if this helps.

Thank you!

Thank you so much!

Thanks for your kind comment! To reference the Loads it is a great resource to check on the RIGHT-J WORKSHEET in wrightsoft. This is pretty much the ACCA Manual J Worksheet which doesn't account for lights in residential. In commercial projects (ACCA Manual N), lighting is very important measured in W/SF depending on the location. Refer for example to the Table C405.3.2.1 from the IECC-2018 to find LPD values (lighting power density) codes.iccsafe.org/s/IECC2018P5/chapter-4-ce-commercial-energy-efficiency/IECC2018P5-CE-Ch04-SecC405.3.2 Hope this helps.

@@hvaceasymath Does this mean that light loads just don't really matter in residential loads mostly?

Yup, not so much. Mainly in semi commercial and definitely in commercial building.

I can see that latest is in this link. Hope this helps. static1.squarespace.com/static/6320b844c3820725e4d5688f/t/6372af076022e56f815dc7f5/1668460297956/ASHRAE+62.1-2022+%281%29.pdf

Thanks for the kind comments. Let me see I’ll get back to you.

We only select one wall because the software automatically will account for exterior walls. Interior walls don’t take part in the calculation. Technically, the software takes the expose walls in the perimeter of the house. In this case it takes the plan North wall and plan east wall since they are exposed. Because both walls are one type, we only put one type of wall (envelope properties are the same for both walls)

We only select one wall because the software automatically will account for exterior walls. Interior walls don’t take part in the calculation. Technically, the software takes the expose walls in the perimeter of the house. In this case it takes the plan North wall and plan east wall since they are exposed. Because both walls are one type, we only put one type of wall (envelope properties are the same for both walls)

Thank you!

Thanks for watching my videos.

So happy to hear my videos are helpful!