Heat Delivery Issue
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So, its -12 * (the pucker star) and my radiant zone cant keep up. I have a 6" circ running three 200'
loops. If I put a three speed pump(on high) in its place will that push more heat into the slab? The water temp in is 120 and return 80 so Im assuming until I get 120deg water back there is room for more btu/hr in the slab. Is this sound reasoning? I should mention that the efm is cycling on at about 30% of the time so its not a production issue.Thanx in advance for the input.....
Waldo
loops. If I put a three speed pump(on high) in its place will that push more heat into the slab? The water temp in is 120 and return 80 so Im assuming until I get 120deg water back there is room for more btu/hr in the slab. Is this sound reasoning? I should mention that the efm is cycling on at about 30% of the time so its not a production issue.Thanx in advance for the input.....
Waldo
- freetown fred
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Can't help with all that fancy stuff, but ya know if push comes to shove, ya can always come out to Freetown with the tribe. Good luck with all that wl
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Thanx Fred, but there isnt any school today ,and I wouldnt subject you or the tribe to my kids.Im thinkin I got plumbing to do today...
- Sting
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Supply and return temps should be with-in 12% + or - 2 or 3% -- it depends
yes - maybe - if you push more volume out to your radiation you will return warmer liquid
you don't want supply and return temps close - that only means your radiation is not as productive as it could be and your wasting circulation and energy
Kind Regards
Sting
yes - maybe - if you push more volume out to your radiation you will return warmer liquid
you don't want supply and return temps close - that only means your radiation is not as productive as it could be and your wasting circulation and energy
Kind Regards
Sting
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Sting
Tried the turning up the temp thing,unfortunately Ive never used it in 13 ys and it is seized. And I don't think this is a good time to tear the damn thing apart . This day is shaping up to be a beaut already, thankfully I did get beer last night
Tried the turning up the temp thing,unfortunately Ive never used it in 13 ys and it is seized. And I don't think this is a good time to tear the damn thing apart . This day is shaping up to be a beaut already, thankfully I did get beer last night
- Sting
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if you have an thermal reacting tempering valve in the line - can it be bypassed? - yes now is not the time for pipe wrenches -- baby its cold outside
well --- hummmm -- can you up the temp on the boiler -- if indeed the "thing" is stuck --- then it will exponentially send more energy to the loop if hotter water is available
well --- hummmm -- can you up the temp on the boiler -- if indeed the "thing" is stuck --- then it will exponentially send more energy to the loop if hotter water is available
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Honeywell Sparcomix valve is seized. Im gonna try loosening the cartridge and see if that works. Trouble is, the wrench is in the truck and Im a *censored* when it comes to cold. That wrench weighs ten pounds and at -12 ,thats alot of cold
- Sting
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I agree - I walk in my "shop" these days and the 9/16 wrench sticks to my hand - like licking an aluminum flag polewaldo lemieux wrote: the wrench is in the truck and Im a *censored* when it comes to cold. That wrench weighs ten pounds and at -12 ,thats alot of cold
those pesky valves shoud be installed like circ pumps --- with isolation valves because you know anything with tits - wheels - or springs are going to give you trouble
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from where I sit,We were always looking for a 20 deg split between supply and return temps,If it was my place I think that I would go for the 3 speed pump and try to get your delta t a little closer to 20 deg instead of the 40 deg split that you are now seeing.If you have a tempering valve raising the boiler water temp will not increase the temp of the water entering the radiant system,besides if the floor is too warm you have a chance at damaging your floor covering.I did a radiant retrofit in my own home,before installing the radiant, I had hot water baseboard that I left in place and have on a separate tstat set 2 deg cooler than the radiant and on these bitter cold nights here in rural Schuylkill county I need that extra bit of baseboard heat to keep the house at a nice comfy 74 deg.Hope that this info helps and makes sense.
- Lightning
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Can you increase the temperature supplying the zone while maintaining flow volume? That should increase BTU output from the zone, shouldn't it?
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So ,the mixing valve adjustment knob is seized and wont allow me to raise the water temp. I think that probably getting a three speed pump will push the 120 deg water further into the system and when I can get the valve freed up ill be able to increase water temp to the floor as well. I just don't dare to tear the valve apart right at the moment. Though it did make it to 0* this afternoon The temps in the house started climbing , and made it to 67 . Just not the toasty Im used to
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Rob,
bell and gossett nrf-22
bell and gossett nrf-22