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Author Topic: What water temp if only doing in-floor heat?  (Read 14112 times)

ffbare

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Re: What water temp if only doing in-floor heat?
« Reply #15 on: March 03, 2014, 05:22:06 PM »
Jim so what your sayin is not having it touch the underside of the floor would be better than touching? It's a different type of heat right convection and radiant?
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agriffinjd

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Re: What water temp if only doing in-floor heat?
« Reply #16 on: March 03, 2014, 06:41:28 PM »
Quote from: ffbare on March 03, 2014, 12:07:22 PM
Griffin I plan on doing the same thing your going to do it sounds. What kinda heat plates under the floor do you plan to use?

I'm just doing forced air.  I only started the topic out of curiosity.  I like the idea of in-floor, but not enough to give up ducted A/C and a propane furnace for backup that can keep the water in the OWB from freezing if necessary...
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ITO

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Re: What water temp if only doing in-floor heat?
« Reply #17 on: March 03, 2014, 08:02:55 PM »
 I'm just doing forced air.  I only started the topic out of curiosity.  I like the idea of in-floor, but not enough to give up ducted A/C and a propane furnace for backup that can keep the water in the OWB from freezing if necessary...
[/quote]
 The water to water HX can also have your indoor boiler keep your outdoor boiler loop from freezing. For me radiant in-floor heat is so constant temp, quiet, clean and comfortable I wouldn't go back to forced air unless kicking and screaming.
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ffbare

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Re: What water temp if only doing in-floor heat?
« Reply #18 on: March 03, 2014, 08:07:09 PM »
 :post: I'm excited to do a system I keep reminding myself of how nice my old bosses house was. (He had an indoor gas boiler with in floor heat)  it was so comfortable
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lindnova

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Re: What water temp if only doing in-floor heat?
« Reply #19 on: March 04, 2014, 11:46:18 AM »
I wouldn't put boiler hot water straight in to floor pipes either.  Should use a bypass, mixing valve or heat exchanger.

I have a heat exchanger to separate the systems as I have hot water and air furnace also.  I used a 60 flat plate and a mixing valve on the 'house' side of it to get the water down to around 100-110°.  I originally was running the 180 temps in the floor and got hot and cold spots with temp fluctuation as the pump did not run long enough to get an even heat.
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fryedaddy

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Re: What water temp if only doing in-floor heat?
« Reply #20 on: March 04, 2014, 02:15:15 PM »
I'd do in floor heating any day over forced air.

The heat is even and doesn't blow dust around.
If your power goes out you would only have to power your stove and (1) pump to run the heat.

My setup has (1) loop through the forced air then to the floors. My floors have seen 150+ degree
heat for well over (20) years with no issues.

Its hard to describe the heat but it feels like it comes from within.
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Marktk

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Re: What water temp if only doing in-floor heat?
« Reply #21 on: March 04, 2014, 03:51:30 PM »
I have staple up on 1by2the spacers running at boiler temp 178 8 degree diff i have not noticed any hot spots per say but as of now there is no ceiling in the basemnt so it tracks temp with upstairs which is nice. I did notice my return to the boiler when my main zone kicks in can dip as low as 148you ish for a breif time any body see a problem with that
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slimjim

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Re: What water temp if only doing in-floor heat?
« Reply #22 on: March 04, 2014, 04:44:33 PM »
Not if it's brief!
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LittleJohn

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Re: What water temp if only doing in-floor heat?
« Reply #23 on: March 07, 2014, 09:47:18 AM »
Quote from: Marktk on March 04, 2014, 03:51:30 PM
I have staple up on 1by2the spacers running at boiler temp 178 8 degree diff i have not noticed any hot spots per say but as of now there is no ceiling in the basemnt so it tracks temp with upstairs which is nice. I did notice my return to the boiler when my main zone kicks in can dip as low as 148you ish for a breif time any body see a problem with that

Like Slim eluded to a short term drop in return temp is OK, if its for a BRIEF amount of time.  You have to realize you probably have some water (several gallons) in the ceiling panels thats about 70F (room temperature) and you are simply evacutating that into the OWB.  If your return temp, does not stabilize somewhere above 160 after say 5-10 minutes, look at turning up pump, as you are potentially losing more that 20f across the system - potentially bad (uneven heat).

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browncty

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Re: What water temp if only doing in-floor heat?
« Reply #24 on: March 09, 2014, 07:31:11 AM »
I have in floor heat installed in my basement and garage. Its set at 115-120 degrees. I was advised by the concrete person and the professional who installed my system that it should not go above 120 either. Now my stove was set at 200 degrees preset by the manufacturer. I have had friends, employees and read here that 180 is what most keep there stove at. I have no issue with what its set at and I love the really hot water we get even after its gone through the mixing valve. I really think my blower comes on the stove around 185 or 190 degrees at least it seems it does when I look at the temp gauge. Maybe in the spring I might turn down the temp ad friend of mine does that and is happy how things run.
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slimjim

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Re: What water temp if only doing in-floor heat?
« Reply #25 on: March 09, 2014, 07:57:26 AM »
Browncty, as long as you don't overheat and steam off from your vent, we believe the hotter the better for the boiler, what you are doing now should be fine.
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browncty

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Re: What water temp if only doing in-floor heat?
« Reply #26 on: March 09, 2014, 09:52:53 AM »
Slimjim thanks! I have the boiler plumbed so I can fill it from inside the house. All I need to do is have the wife tell me the gauge says its full or that its coming out the top of the stove.
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Marktk

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Re: What water temp if only doing in-floor heat?
« Reply #27 on: March 10, 2014, 05:55:19 PM »
I did not mention that i have a 40 gal mxing tank in the house boiler goes in and out and interior zones go in and out all on diff 3/4. Oitlets
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slimjim

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Re: What water temp if only doing in-floor heat?
« Reply #28 on: March 10, 2014, 06:39:33 PM »
That's called a buffering tank and is used to stabilize the temps, it balances out the zone temps
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Marktk

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Re: What water temp if only doing in-floor heat?
« Reply #29 on: March 12, 2014, 11:16:35 AM »
Thats why i oiped it in i figured a little more storage and a lot less shock to boile
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