Adding Hydronic run to existing system
Hello i just moved into a house that has Hydronic heating for basement and main floor but the garage only has the lines run and not hooked up. Here is what it all has which is 8 runs and need to know how to plumb in the garage so that I can have heat this winter. What all do I need for the simplest way to make it function.
Th last photo is the 4 lines coming from garage that are cut off at the drywall and not plumbed into the system. I've never had Hydronic heating so this is why I'm asking what is needed to hook it up seeing as the manifold has 8 runs already I didn't know if I can by a 2 run and add
Comments
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Looks like you will need to add another pump after the air eliminator and pipe it to the garage manifold as long as that's 1" pipe and not 3/4".
While you're at it, you want to properly support that expansion tank and insulate all the bare pipe.
Let's see what your boiler and boiler piping look like.
8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour
Two btu per sq ft for degree difference for a slab0 -
Those 4 lines go to the garage? If so pressurize them first to be sure they do not have any leaks.
Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream
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I Will take more pics when I get home but yes those 4 pipes coming through drywall go to the garage slab.
Hhydronic heating is new to me so have no idea what would be needed to make functional as there is no extra spots left on the manifold for heating zone. I will take better pics of everything coming from Boiler through the system to current manifold
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The garage needs a seperate zone with a seperate 2 loop manifold. It doesn't need the actuators because its one zone. You plan on doing this yourself?
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II've done all my own Pex systems in previous house but never had a boiler system just regular DTWT. But yes if it's something I can do then 100% will do just don't know where to tie in and what would need. I've installed all my own Heat Pump minisplits and pretty much nothing would seem to overwhelm me so once I take some full wall pics someone can hopefully tell me where to tie in the new manifold and whatever else needed.
Also would I need another small pressure tank or would the one there supply it as well?
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Can this garage get below freezing?
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yes live in Northern Ontario so rooghly 5 monthes of the year is below freezing. System already has Glycol in it for the rest of the house so i would need to add more Glycol to garage runs after doing the volume math and presume is Propylene Glycol and 25-30%
IIn the winter wont be opening garage car door cause this is for my Golf Simulator so want to keep floor from being freezing cold
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Here Are pics from the Boiler to the basement floor run and the upstairs run pictured with the 2 transparent hoses going up to main floor. The pipes coming from garage are 1/2" ID from what i measured and the recirc pump to basement pad is set to low and the pump for upstairs run is set to High. I have no faith in previous owners from all the maintenance I already had to fix so should they be set to Low, med or high recirc once winter comes back around and I turn on?
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it is possible to likely that they are disconnected because they froze.
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do i need anything fancy to test the lines for pressure? Blow out first with airlines to see if I have airmovement then somehow pressurize and see if holds pressure?
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You just need fittings to connect to the pex and a pressure gauge and some way to fill and pressurizer it. It is safer to do it with water because air stores energy but i'm not going to tell you not to do it with air.
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quick and easy, reusable test setup.
Air pressure is fine for pex, actually required for testing pex in winter or freezing conditions.
Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0
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