?air space between staple up with plates and insulation

Ron Schroeder

Hi Mark,

Hi Mark,

Sorry, no pictures were taken. The FLIR that I used then was just before they added storage on memory cards.

I lean the opposite way on the gaps. I would try to have some gap even if it is inconsistant unless the joists were 2X6 or smaller. Just about any gap is more than R1, probably as much as R3 for downward flow of heat and air is free but fiberglass isn't.

Ron

radiant_4

> OK, It does look like a flow problem. It could

> be airbound in the desuperheater or some

> restriction or even a controls

> problem.

>

> Usually a lockout is sensed by over

> preassure not over temperature but over

> temperature of the freom causes the overpressure.

> The main hot water output should have enough

> capacity to extract all of the heat from the

> freon if it has enough water flow even if nothing

> is coming out of the desuperheater.

>

> Low flow

> in the ground loop can also cause the problem but

> it is less likely. If you have low flow in the

> ground loop, you probably would have had problems

> in the A/C season.

>

> What kind of pump do you

> have for the radiant loop?



> Each zone (8) has individual Taco 007-F5-IFC pump.


>
Are the buffer

> tanks plumbed so the water goes from the heatpump

> to the tanks and then back to the heat pump? And

> is the radiant loop from the tank to the floor

> and then back to the tank (primary/secondary

> loops)?


> I am guessing yes.


> What pump goes in the loop from the

> heatpump to the buffer tanks?

>

Only Grundfos from tanks back to heatpump as far as I can tell. I know 5 Grundfos pumps for loop field outside.

> The flow from

> the heatpump to the tanks is more likely the

> cause than the flow from the tanks to the radiant

> if it is plumbed like I think it is.

>

> Do you

> know how hot the buffer tanks got when the 5 ton

> heat pump locked out?

>

We were making frequent checks of the system and didn't see the buffer tanks above 125 maybe.

> Not directly related,

> but is the A/C using cold water from the heat

> pump thru a water coil in an air handler or is it

> cold freon to an evaporator in the air

> handler?

>

AC used cold water from the hp thru water coil
>
Ron

Mark Eatherton1

So...

tell us more about yourself Ron? Where do you hail from, what do you do, how long you been doing it?

Your talking about changing the way things have been taught around here. Got any FEA's to back up what your saying? What you say holds some merit. Dead air IS an insulator, but if its so good, why when it's say 9" deep, I.E. the typical uninsulated main floor/basement ceiling, does it not work so well... If dead air has an R value of 1 to 3 per inch as you say it does, the 9" dead air space should equal an R 18. Is it???

I can't tell you HOW many billion dollar mansions that I get called to who didn't have ANY insulation in the floor joists, whose basement has a temperature of 80 degrees F, and the main floor will not go above 64. I try explaining to these billionaires that "heat DOESN'T rise" and figure out how to insulate their ceilings in the basement. They think they can change the laws of thermal dynamics with their check books...but they can't, and then I change the volume of their wallets, to make it right.

But I digress. Tells us about yourself:-)

Maybe Siggy can generate an FEA of what you'r talking about.

ME

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

Mark Eatherton1

Bump

Didn't want it to fall off the wall...

ME

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

hr

Some of my IR

in my tesying I was looking for the output differences between various installation methods. These show rubber staple, suspended tube, Warmboard and copper in ThermoFin. Same temperature, same flow rate, insulated with foil faced under rubber, regular batts under plates.

Notice on plate pic I had pulled the plates down at two ends to crimp my pex connection. I forgot to put the dozen or so screws back in and you can see the contact power! Or lack of

The Flir we used had a jack to plug my Sony video camera into. Then my sons Mac software allowed me to pull still shots off the video camera tapes.

Otherwise you are tied into the Flir propritary software to play with the pics.

The set up I used was closer to 70 grand. It had a telephoto lens and a mount arrangment in the roof of a van for the utility company to shoot power lined and pole mounted transformers. Neat stuff. www.flir.com

hot rod

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"