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Old 02-01-2011, 11:28 AM   #1
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Hydronic Floor Heating ??'s


I'm planning on installing hydronic floor heat in an overall rehab I'm working on. I have a working knowledge, and recognize the complexities. Would like to use a company that oversees the design, but allows me to do most if not all the hands on. In my research, one company that looks promising is - Radiantec
My questions are these.
1) Has anyone had any experience, good or bad, with this company?
2)Can anyone recommend others?
3) Any additional info that might be helpful?

As it stands now, I'm planning to install a direct, open system with 2 to 4 zones using a water heater as my heat source. That may change based on what the permitting/codes office has to say.

Any and all help greatly appreciated.
Regards,
Jules

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Old 02-02-2011, 11:05 AM   #2
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Hydronic Floor Heating ??'s


No code recognizes "open" heating systems. No licensed professional will install or service them...why would you.
I design approved systems for DIYers every day.

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Old 02-02-2011, 11:29 AM   #3
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Hydronic Floor Heating ??'s


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As it stands now, I'm planning to install a direct, open system with 2 to 4 zones using a water heater as my heat source.
3) Any additional info that might be helpful?
Ayuh,... What do you mean by Open,..??
You can't/shouldn't/ Don't want to run the Dhw through the heating....

Where about's is Home,..?? Climate wise,..??

I just designed, built, 'n installed my own in-floor radiant in my rental in the last few months,...

I found all kinds of resourses for tubing lay-outs in various flooring alternatives, on-line, 'n at various merchants peddlin' the stuff,...
Those, 'n the particalities of workin' on a 100 year old cottage dictated where everything Actually layed out...

I went with an oil boiler in a primary/ secondary loop system, with manifolds splittin' up the loops/ zones...
All run on pumps, rather than zone valves...

Spoke to the tenant yesterday,.... He's still Smilin' ear to ear,... even with the -30 days we had last week...

Good Luck with your's,...

Last edited by Bondo; 02-02-2011 at 11:31 AM.
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Old 02-02-2011, 11:40 AM   #4
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You can save a lot of money on pumps by getting professional design help.
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Old 02-02-2011, 11:48 AM   #5
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Hydronic Floor Heating ??'s


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Originally Posted by BadgerBoilerMN View Post
You can save a lot of money on pumps by getting professional design help.
Ayuh,... No Doubt,...
But at $70. a pop,... pumps ain't so bad...

The other thing I learned from all my research is,...
There's Waay more than 1 way to do the job Right....

3 Designers will lay out 3 Different ways, 'n they'll All be Right....
1 way or another,....

Besides,....
I really like sayin', "I did it, Myself".....
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Old 02-02-2011, 03:29 PM   #6
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Hydronic Floor Heating ??'s


Quote:
Originally Posted by Bondo View Post
Ayuh,... What do you mean by Open,..??
You can't/shouldn't/ Don't want to run the Dhw through the heating....

Where about's is Home,..?? Climate wise,..??


Good Luck with your's,...

Please recognize that I'm not affiliated in anyway with this site. It's simply the first company I've interacted with.
This should answer your question regarding the use of the word "open".

http://www.radiantec.com/pdf/Direct_...ing_System.pdf

Home is Kansas City, Mo.

Thanks for showing interest in my post.
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Old 02-02-2011, 03:41 PM   #7
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Hydronic Floor Heating ??'s


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In the domestic hot water mode
When domestic hot water is wanted,
warm water comes out of the
tank and goes to the fixtures. Cold
water must replace the hot water
that was used. The cold water
goes through heating tubes within
the floor on its way to the water
heater
(an important safety detail!).

This flow pattern provides limited
free cooling and other benefits.
Stagnation is prevented and
priority is given to the domestic hot water use over the space heating use. A small amount of free
cooling is realized in the summer.
Ayuh,... That's exactly what ya Don't wanta do...

Heating water, 'n Domestic water should Not be mixed....
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Old 02-02-2011, 03:46 PM   #8
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Hydronic Floor Heating ??'s


A little more detail........

My initial plans were to use a condensating boiler system. However, initial costs appear to be prohibitive. That's what led me to the site I spoke of. They specialize in using water heaters in their systems. An internet search provided several references to such. Most preferred the use of a heat exchanger, which I may end up doing. Either by choice, or due to code restrictions.

I haven't landed on any particular setup yet. Just feeling it out. Thus this thread.
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Old 02-02-2011, 03:49 PM   #9
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Ayuh,... That's exactly what ya Don't wanta do...

Heating water, 'n Domestic water should Not be mixed....

Bondo,
I'm sure the owners of the company would argue with you, based on my research at their site. They said they've installed, or designed 1000's of systems.
I'm not attempting to arguing with you. It just seems there's a lot of info out there to argue their approach.
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Old 02-02-2011, 04:03 PM   #10
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Hydronic Floor Heating ??'s


One of my initial questions regarded the cold water entering into and through the system during the winter. It seemed to me, that would be counterproductive to money spent on heating the water in the first place. Their response was, it would take a hot water tap left on for one full hour to drop the floor temp by 1 degree. I didn't ask if they'd tested this in a controlled enviroment measuring the results, but it's on my list of questions for them.
I did like the idea of running it through the sytem during the summer. Seemed like a win/win. Cool the house, and enter the tank slightly higher in temp.
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Old 02-02-2011, 05:10 PM   #11
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It is true they have been arguing their approach for a long time, funny they don't have any competition or code compliance documentation.

But they are cheaper, thus the attraction.
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Old 02-02-2011, 06:29 PM   #12
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Originally Posted by BadgerBoilerMN View Post
It is true they have been arguing their approach for a long time, funny they don't have any competition or code compliance documentation.

But they are cheaper, thus the attraction.
When I posed the question of codes issues, they referred me to this page:

http://www.radiantec.com/codes-approval/


Claimed to be ICC approved, and would go to bat against local coding if need be. Once again. I'm not endorsing, just sharing what I've learned thus far.
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Old 02-02-2011, 07:28 PM   #13
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Ayuh,... I ain't no Hvac expert, but I hear running the Dw through the heating pipe sets up some nasty bacterial issues...
I can't tell ya about the codes, but it makes sense to Me that it's outa code...

Repeatedly heated, 'n cooled water tends to Stink, I would imagine it wouldn't taste to good either...
Even a bit of a splash in the face, in the shower would suck...

For what your doing, Another water heater, Not tied to the Dhw would work..
Course, then ya got 2 heating units...
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Old 02-02-2011, 07:31 PM   #14
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It would be wise to have them "go to bat" before you send funds.

The document you refer to is a "report" and otherwise meaningless. It does not sight any ICC code.

Further, note the disclaimer at the bottom of each page.

But open heating/domestic hot water systems are easy and cheap.

If you buy one, keep my number I redesign a lot of them.

Last edited by BadgerBoilerMN; 02-02-2011 at 07:34 PM. Reason: truth
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Old 02-02-2011, 07:55 PM   #15
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What's with all the Ayuh's?

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