A solution to those nagging 1,000 foot loops of 1/2" PEX...

Mark Eatherton

And you won't need a boiler if you wrap some copper pipe around the motor serving the pump. As Siggy said, might be an issue finding the right flanges to adapt to 1/2" PEX, but I assured him that Viega has bushings and ProPress fittings to make it work. Happy Friday friends.

Steve Minnich

"Well ya wonder why I always dress in black..."

icesailor

What's the head pressure?

Mark Eatherton

Chris, I honestly don't know, and wouldn't advise that anyone attempt to install a pump of this size in a residential setting. It was just the biggest friggin' pump I'd ever seen at a trade show. I tried to get Siggy to stand in front of it so I could take his picture, but he thought better... This was a 480 V, 3 phase pump typically used for cooling tower applications.

ME

DanHolohan

We videotaped at Armstrong and I also enjoyed standing near that big boy (the pump, not Mark).

icesailor

ME, you just don't understand human nature.

Someone, somewhere, is planning out a way to use that pump in a 3,000 square foot radiant floor with one loop.

With a mixer.

That's just a fact.

Gordy

Dead heading would be quite spectacular.

hot_rod

I saw a guy taking a nap inside that volute Or maybe it was an elf.

Mark Eatherton

Kirk Vigil of Grundfos said they make one that you can actually stand fully upright in the flanges. Now THAT'S a pump...

ME

Jack

Ice, I was on a gardening site yesterday and a fellow who listed himself as the ultimate diy'er is going to put radiant in his 1200 sq ft home with a tankless. He felt that in spite of what he had read on some sites that he could do it with up to 1000' loops. It's like Monty Python where the knight goes into the cave and the rabbits kill the knights. "Run away, Run away!"

Gordy

Jack said:

Ice, I was on a gardening site yesterday and a fellow who listed himself as the ultimate diy'er is going to put radiant in his 1200 sq ft home with a tankless. He felt that in spite of what he had read on some sites that he could do it with up to 1000' loops. It's like Monty Python where the knight goes into the cave and the rabbits kill the knights. "Run away, Run away!"

The outcome will be acceptable because he did it himself, and doesnt know what is acceptable. OR you will never hear the outcome. Well you might because he will end up here looking for that 4 way reversing valve set up.

SWEI

Gordy said:

he will end up here looking for that 4 way reversing valve set up.

I'm wondering if I should put together a little package for that and advertise it online...

Gordy

SWEI said:

Gordy said:

he will end up here looking for that 4 way reversing valve set up.

I'm wondering if I should put together a little package for that and advertise it online...

Might be a money maker. Explicit instructions to throw away before you begin would be required. Use toilet paper to maximize profits.

hot_rod

I've built a few of those reverses, the last with a tekmar 4 way and heavy duty Belimo actuator. Remember they also need a high head circ included. A reverser on a 1000 foot loop with a 15-58 size circ would not do much.

With a 26-99 size circ and a reverser you can get some fairly good results.

A lot depends on the loop layout as with reversers you warm both ends of the loop, but the middle 1/3rd still sees low supply temperatures, you just sneak up on the load from two different directions

icesailor

Fear not. The DIY will use a iron body 007 because it is cheap.

And someone on the Internets told him that the 007 "Might work for you. I've never seen it ever work for anyone else, but it might work for you". Not understanding the context of the encouragement, he went right ahead.

It reminds me of something my mother used to tell me when I was really little. About the person who wanted to do things.

There once was a thing,
That couldn't be done.
They said no one could do it.
So he tackled the thing,
That couldn't be done,
And by God, he couldn't do it.

archibald tuttle

every once and a while the poem comes out different for me . . .

but 'seriously', that pump is a real help for those of us who prefer 3/8" loops.

SWEI

archibald tuttle said:

but 'seriously', that pump is a real help for those of us who prefer 3/8" loops.

Seven hundred of them in parallel across an airport hanger slab?

archibald tuttle

with that pump maybe i could do series . . . not

Harvey Ramer

That pump could put a golf ball through a garden hose.

Gordy

null

Ouch!

archibald tuttle

Gordy said:

Ouch!

only if you're the garden hose

Ken Mac

Maybe he was going to use 3/4" or 1"... or maybe not!

Jack said:

Ice, I was on a gardening site yesterday and a fellow who listed himself as the ultimate diy'er is going to put radiant in his 1200 sq ft home with a tankless. He felt that in spite of what he had read on some sites that he could do it with up to 1000' loops. It's like Monty Python where the knight goes into the cave and the rabbits kill the knights. "Run away, Run away!"

Gordy

null

Good luck to him he could be on animal planet wrestling anacondas on the Amazon.

Weezbo

Nice! No longer will there be a problem with which circ wins the battle. A wall of them and you are "Golden" .

lol... It is as Mark said , "no need for a boiler" . No more short cycling in shoulder seasons , lash it up primary secondary to a LLH . Shut down the boilers and move wire to water.
Sweet!