Lunos in a home with a basement
kerrar
| Posted in Mechanicals on
All,
It seems that many here love the Lunos products and I’m leaning toward them, as well, for a new 1200sq ft build.
While it all makes sense in my head for a house on a slab, what about a concrete basement? It it really feasible to put a 6″ hole in the sill plate to provide for air in the basement? Or would 2 pairs on the main level adequately move air in the basement? (I figure not.) Or would I need to add another system to work along side the main level Lunos pairs to service the basement?
Any thoughts? Thanks in advance!
Jason
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Replies
Having retrofitted a pair of Lunos e2 in a poured concrete basement a few years ago...
Putting a Lunos e2 through the band joist or between floor joists would violate the ~12" minimum ceiling & sidewall clearance requirements for the unit. It has to be installed low enough below the basement ceiling to meet those requirement, which for most basements means there also has to be sufficient above-grade foundation wall, and making the hole in the foundation.
Coring concrete is expensive. In new construction building a form of the correct diameter and pouring around it will be a less expensive method. The diameter is 6-5/16" , not 6.0", and there needs to be sufficient slope, or an oversizing factor sufficient to provide the 3mm (~1/8") slope specified in the instruction manual for drainage. A 6.50" hole would be the minimum size to fit comfortably, 7" is easier, and it can then be grouted-in or latex-foamed into place in the correct position/orientation when it's time to install the unit.
Thanks for the feedback! I'll keep that in mind and might have to talk to the concrete company before the pour, once the plans are finalized.