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New Garage Radiant Floor Heat system only getting air temp up to 55F
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Comments
The coefficient of linear expansion formula usually works as per 100' per 10 degrees rise, or fall from a given starting temp.
Is that a lot? I don't know, but it has to overcome the pressure losses in your system. If a company did the design, I would think that they did computer modeling and that it is correct. I always want the lowest pressure losses vs cost as possible because you can use a smaller pump which equates to less electrical cost to run that pump which over the system lifespan can be considerable. It was nice that you used 3/4" pex instead of 1/2" pex. The heat delivery isn't much different, but the pressure loss is very different.
I think that pulling the wire mesh up with a rake while standing on it left it at the lower depths of the slab and it will take a lot more time to bring the slab up to temperature and may require a higher supply temperature.
Also, I don't like high loops without there being some method to bleed entrapped air out of these high loops like either a coin air vent or auto vent.
Better add up your pressure losses because I see a lot of them in your boiler installation.
Albert Einstein
Langans Plumbing & Heating LLC
732-751-1560
Serving most of New Jersey, Eastern Pa .
Consultation, Design & Installation anywhere
Rich McGrath 732-581-3833