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Search: Posts Made By: Mobile Master Tech
Forum: Renovations & New Construction 03-02-16, 03:27 PM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
Yep, those are good for 230F instead of the usual...

Yep, those are good for 230F instead of the usual LLDPE at 150F. Any pointers on how to tell one from the other on quick visual inspection?
Forum: Renovations & New Construction 03-02-16, 10:45 AM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
HERE...

HERE (http://ecorenovator.org/forum/21847-post1232.html) is a description of a lot of my system and house. The more detailed thread about annualized storage of heat for floors and DHW is HERE.
...
Forum: Renovations & New Construction 03-02-16, 09:56 AM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
I have hydronic floors and A/C too. I wanted the...

I have hydronic floors and A/C too. I wanted the floors to be the heat source for efficiency, comfort and the ability to use solar heat stored geothermally. You can't cool building surfaces for AC...
Forum: Renovations & New Construction 03-01-16, 06:02 PM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
I understand about the noise, but I don't find...

I understand about the noise, but I don't find mine very obtrusive. I think silicone plumbers grease would lick that problem. If I do or redo any plates with it, I will post.

I found that 2-4ft...
Forum: Renovations & New Construction 03-01-16, 02:44 PM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
BBP, yes-weird we have some of the same...

BBP, yes-weird we have some of the same heatsource problems.

Do you have any heat transfer plates on your pex? HUUUUUGE difference compared to staple up/suspended. I call straight staple up...
Forum: Renovations & New Construction 03-01-16, 01:18 PM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
My Eternal also "foghorns" sometimes, but at it's...

My Eternal also "foghorns" sometimes, but at it's lowest modulation while on, around 26kbtu. Spooky and comical low hoot sound-almost as if the flamefront has resonant pulsation. Ignition is...
Forum: Renovations & New Construction 03-01-16, 10:41 AM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
BBP, His weather forecast shouldn't show...

BBP,

His weather forecast shouldn't show the temp in degrees, instead just the acronym "TDC!"

Of course, you must design for the demand of the building and climate. An awful lot of the...
Forum: Renovations & New Construction 02-27-16, 12:04 PM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
Talking Jeff, add that upon any news of frozen water in...

Jeff, add that upon any news of frozen water in the forecast, the majority of the population here rushes to the stores picking the aisles clean, stocking a month's worth of perishables that will go...
Forum: Renovations & New Construction 02-26-16, 09:41 AM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
Yes it is difficult for a heatpump system to be...

Yes it is difficult for a heatpump system to be designed for 12million btu/month, hence the storage buffer tank with PCM described in my other thread. It can run during the day while the PV panels...
Forum: Renovations & New Construction 02-26-16, 09:37 AM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
Mike, I beg to differ on a few. I am not...

Mike, I beg to differ on a few.

I am not knocking slab or advocating "staple up" per se, but rather systems with heat plates holding up the pipes and using a bead of heat transfer compound. I...
Forum: Renovations & New Construction 02-25-16, 06:22 PM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
No-the incoming cold water goes through the loops...

No-the incoming cold water goes through the loops before getting to the water heater. They aren't heated unless a circulator pumps hot water through them. The only disadvantage to an open system is...
Forum: Renovations & New Construction 02-25-16, 02:08 PM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
Steve, I'm not familiar with the bumblebee, but...

Steve, I'm not familiar with the bumblebee, but it seems that all the pump manufacturers are now coming out with ECM pumps which save tons of energy. It seems the Laing design still wins out to me...
Forum: Renovations & New Construction 02-25-16, 11:01 AM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
BBP, I agree about traditional circulators and...

BBP, I agree about traditional circulators and zone valves. I read of some systems in a typical house that were too noisy to sleep and the electrical draw is 800-1200W! At what point is that...
Forum: Renovations & New Construction 02-24-16, 04:34 PM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
I've been away a while! Here are some updates and...

I've been away a while! Here are some updates and thoughts after having my system a few years and reading recent posts:

I see a great deal of back and forth over pipe diameter, insulation/radiant...
Forum: Renovations & New Construction 06-05-13, 09:47 PM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
It's there, just not described as PEX-C on that...

It's there, just not described as PEX-C on that page. The one that lists "electron beam processing" is what I used, and once you click on it the description shows PEX-C (the most environmentally...
Forum: Renovations & New Construction 06-04-13, 03:36 PM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
Forgot to say that my piping choices are for...

Forgot to say that my piping choices are for non-buried use. For underground, I wouldn't use PVC/CPVC-it cracks with ground settling as it gets brittle. Use copper, PE, PEX, etc. If you can just...
Forum: Renovations & New Construction 06-04-13, 09:01 AM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
New projects? Yup-firing my energy utilities!...

New projects? Yup-firing my energy utilities! Even with 4 people, 2 businesses, electric clothes dryer, and shop equipment in the house, I've gotten my daily KWH use down to 17-21 without AC and...
Forum: Renovations & New Construction 06-04-13, 08:50 AM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
Concerning thermal transfer compounds, I saw a...

Concerning thermal transfer compounds, I saw a computer forum where a guy tested various kinds, from high dollar to toothpaste! The toothpaste performed nearly as well as the most expensive for quite...
Forum: Renovations & New Construction 06-04-13, 12:33 AM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
Been away from the forum a few months-both my...

Been away from the forum a few months-both my daughters married within 6 months of each other, 1 son graduated, the other moved, now grandbaby on the way! Oh, and there's regular life, too! And my...
Forum: Renovations & New Construction 05-20-12, 11:19 AM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
Great find, Vlad! I saw those but got the ones...

Great find, Vlad! I saw those but got the ones from Gehman because they were cheaper including shipping and I didn't know the pexuniverse ones were omega-they don't describe them as such. Gehman...
Forum: Renovations & New Construction 05-18-12, 09:36 AM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
I have used up to 350 therms of natural gas...

I have used up to 350 therms of natural gas previously in Jan without heating the basement. Using 150 while heating the basement is a big relief! I sealed up lots of leaks, added the floors, added...
Forum: Renovations & New Construction 05-18-12, 09:16 AM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
I have builder-stock R30 blown in insulation in...

I have builder-stock R30 blown in insulation in the attic and R13 in the walls/floors. I did a manual J for the master BR since it has a high window to floor area ratio (pretty accurate) and did some...
Forum: Renovations & New Construction 05-17-12, 01:38 PM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
The pumps are virtually silent-an average whisper...

The pumps are virtually silent-an average whisper would drown their noise out from a few feet away. I do have a couple of places in our master BR that creak as the pipes expand when coming on from...
Forum: Renovations & New Construction 05-16-12, 08:32 PM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
Concerning Legionella, that is why I am designing...

Concerning Legionella, that is why I am designing for minimum 130F supply temp, preferably 135F. I plan on having a small electric instant water heater at the exit of my 30 meter 1" dia corrugated...
Forum: Renovations & New Construction 05-16-12, 06:23 PM
Replies: 588
Views: 501,927
Posted By Mobile Master Tech
To retrofit an existing floor with staple up,...

To retrofit an existing floor with staple up, picture the joist bays you want to heat running left/right for their longest direction, in my case 14'. With a circular saw set for 1/8” deeper than your...
Showing results 1 to 25 of 26

 
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