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Search took 0.01 seconds. Search: Posts Made By: Vlad
Forum: Renovations & New Construction 02-28-14, 01:50 AM
Replies: 588
Views: 515,829
Posted By Vlad
My walls are R22 Roxul insulation and roof is...

My walls are R22 Roxul insulation and roof is R40. As I said before my crawl space has no insulation and first floor is exposed to this cool place.



Here are some gas info coldest Feb 2013 11...
Forum: Renovations & New Construction 02-27-14, 01:49 PM
Replies: 588
Views: 515,829
Posted By Vlad
The design I used is very simple and cheap and...

The design I used is very simple and cheap and you can buy most components right at your closest lumber yard.

I see people are trying too hard to make tube part more efficient by using some...
Forum: Renovations & New Construction 02-27-14, 01:40 PM
Replies: 588
Views: 515,829
Posted By Vlad
Here are more details: 1. Heat source is...

Here are more details:

1. Heat source is DHWT regular power vented 65% efficient 24000BTU net

2. Floor coverings 20-25% tiles rest hardwood no carpet

3. Max water temperature at manifold...
Forum: Renovations & New Construction 02-27-14, 01:24 AM
Replies: 588
Views: 515,829
Posted By Vlad
Just a quick follow up after years of using my floors....

Here is an original post:
http://ecorenovator.org/forum/renovations-new-construction/728-diy-hydronic-floor-heating-21.html

After a few years of using my floors I can say only one thing...
Forum: Renovations & New Construction 09-16-12, 04:17 PM
Replies: 588
Views: 515,829
Posted By Vlad
I used 2 way taco valve. It does have tiny hole...

I used 2 way taco valve. It does have tiny hole when fully opened but I only add hot water trough it and rest of flow goes through bypass. Here is my set up:
...
Forum: Renovations & New Construction 09-16-12, 02:07 AM
Replies: 588
Views: 515,829
Posted By Vlad
I used this valve and pump works well. You have...

I used this valve and pump works well. You have to have bypass. And this is not a full flow valve but mixing valve. It just adds extra hot/warm water when needed.



In my case I live in warm...
Forum: Renovations & New Construction 09-16-12, 01:46 AM
Replies: 588
Views: 515,829
Posted By Vlad
This valve is a part of my control loop. If you...

This valve is a part of my control loop. If you look at parts list I posted you can find it there.

I used taco 2 way outdoor reset valve and I love it. It works like thermostat in my system. The...
Forum: Renovations & New Construction 09-01-12, 08:52 PM
Replies: 588
Views: 515,829
Posted By Vlad
But there is one more question. You do have a...

But there is one more question. You do have a very sophisticated exhaust system with recovery benefits, but do you have an air delivery system distributing air in every room?
Forum: Renovations & New Construction 08-31-12, 01:50 AM
Replies: 588
Views: 515,829
Posted By Vlad
What about your ventilation system? Do you have...

What about your ventilation system? Do you have any? The problem with radiant floor heating is you still have to bring fresh air because there is no air circulation.

This was the main reason for...
Forum: Renovations & New Construction 08-28-12, 02:40 AM
Replies: 588
Views: 515,829
Posted By Vlad
"Heat doesn't just disappear because you have...

"Heat doesn't just disappear because you have insulation from layers of subfloor above the pex. It has to go some where."

It can go back to pump leaving your place cold.

Also randen mentioned...
Forum: Renovations & New Construction 08-22-12, 03:19 PM
Replies: 588
Views: 515,829
Posted By Vlad
I think first of all you have to determine your...

I think first of all you have to determine your heat source.

If the source is high temperature boiler or DHWT or wood burning boiler higher temperature in the underfloor loop doesn't matter. The...
Forum: Renovations & New Construction 08-21-12, 07:48 PM
Replies: 588
Views: 515,829
Posted By Vlad
I just want to remind where all discussion is...

I just want to remind where all discussion is coming from. Radiant hydroponic heating system is low or even very low temperature heating system. This makes possible using heat pump for heating water....
Forum: Renovations & New Construction 05-22-12, 02:13 AM
Replies: 588
Views: 515,829
Posted By Vlad
No, I didn't. I think foil is too thin to...

No, I didn't. I think foil is too thin to transfer heat.

I used foil under tubes as a reflector. If you look at my pictures closer you will see that tubes are suspended and don't touch the...
Forum: Renovations & New Construction 05-20-12, 04:50 AM
Replies: 588
Views: 515,829
Posted By Vlad
I didn't make my own plates I bought them @ ...

I didn't make my own plates I bought them @

PEX Heat Transfer Plates (Aluminum), 2ft long (http://www.pexuniverse.com/store/product/pex-heat-transfer-plates-htp122100)

They cost 68.5c a foot +...
Forum: Renovations & New Construction 05-03-12, 05:21 PM
Replies: 588
Views: 515,829
Posted By Vlad
Diagram

Here is the plumbing diagram and very basic electric diagram. If you have any questions ask them I will post more details.

http://img805.imageshack.us/img805/3540/20120504215503.th.jpg...
Forum: Renovations & New Construction 05-03-12, 04:09 PM
Replies: 588
Views: 515,829
Posted By Vlad
I used pex with oxybarier. If you look at parts...

I used pex with oxybarier. If you look at parts list you can see cast iron pumps, so oxybarier a must be.



No glue, no silicone. Omega shape heat plates is what helped to hold tubes in place....
Forum: Renovations & New Construction 05-03-12, 03:34 PM
Replies: 588
Views: 515,829
Posted By Vlad
Sorry, I meant effectiveness. In my language this...

Sorry, I meant effectiveness. In my language this two words are interchangeable.
Forum: Renovations & New Construction 05-03-12, 03:28 AM
Replies: 588
Views: 515,829
Posted By Vlad
I ordered 1000 plates and still have about 200...

I ordered 1000 plates and still have about 200 left. 800 plates was enough for 3000sft. You don't need to bend them. You only use them on straight runs. Why would you bend them?

If I set loop...
Forum: Renovations & New Construction 05-03-12, 01:51 AM
Replies: 588
Views: 515,829
Posted By Vlad
berniebenz, As I said before, unfortunately...

berniebenz,

As I said before, unfortunately I don't have extra time to test and compare concrete VS sandwich installation.

I don't claim this set up as my design. I just didn't want to deal...
Forum: Renovations & New Construction 05-02-12, 06:49 PM
Replies: 588
Views: 515,829
Posted By Vlad
1. Yes pex is spaced 12" apart. 6" spacing is...

1. Yes pex is spaced 12" apart. 6" spacing is impossible in my case because it will make pex loops too long. Plywood is 5/8" and not 3/4".

2. Read this first: Physics of Foil: Radiant Barrier...
Forum: Renovations & New Construction 05-02-12, 12:37 AM
Replies: 588
Views: 515,829
Posted By Vlad
I forgot to mention there is no insulation under...

I forgot to mention there is no insulation under pex tubes and there is no insulation under subfloor. The only "insulation" I have is aluminum foil that covers subfloor and air gap under pex tubes. ...
Forum: Renovations & New Construction 05-02-12, 12:28 AM
Replies: 588
Views: 515,829
Posted By Vlad
I still don't get it. But if you mean...

I still don't get it. But if you mean supply-return then control tries to keep TD @ 6F by modulating pump speed.

If you mean floor area where I have tubes and where there is nothing then yes you...
Forum: Renovations & New Construction 05-01-12, 12:58 PM
Replies: 588
Views: 515,829
Posted By Vlad
Can you give more info what pipes?

Can you give more info what pipes?
Forum: Renovations & New Construction 05-01-12, 11:16 AM
Replies: 588
Views: 515,829
Posted By Vlad
Main parts list:

I bought most of components from 2 web sites and eBay.....

Variable speed control for main underfloor loop circulator
157 - Tekmar 157 - Difference Setpoint Control - Variable Speed...
Forum: Renovations & New Construction 05-01-12, 11:09 AM
Replies: 588
Views: 515,829
Posted By Vlad
Performance

Now when winter is over I can say that floors performed perfect. My original heat loss calculation required 50k BTU for heating. This winter I used my HWT as heat source. My HWT is 34000BTU input...
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