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Constantin

Simple, minimalist, and easy to follow.

Thanks for sharing!

Paul Pollets

Wirin' & Firing

Ripped out the furnace and ductwork last week and ready to commission a system using a Vitodens 6/24 and 10 wall panel rads. The system design had a flowrate under 6gpm so we were able to use the smart pump built-in to the Vitodens, and not have to add the low loss header. The radiators were designed for 140deg water temps so the boiler should be in condensation mode 80% of the time. The exposed distribution piping will be soffited by the owner.

The specialty sump pump is for the condensate drain and relief drains, as the basement had no floor drain. We pump the condensate into a 5g pail of marble chips, with holes drilled into the bottom of the pail. Sort of like a Condensate Collander.

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Ted_9

Nice

Nice install and keeping it simple. I like it.

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Perry_2

Sweet

If I was starting from scratch.... I too could eliminate the LLH and the secondary pump.

However, keeping the existing monoflo T system and cast iron baseboard resulted in too much head for the flow needed.

Perry

Brad White_143

Inspiring

Love the simplicity, Paul.

I do like the LLH principle by the way, when you need it, but if no need, why do it?

And I bet you can beat 80% condensing time- let us know how she tracks if you can?

One caveat about the marble chips in a drywall bucket and forgive me for repeating: My HDPE drywall bucket turned as brittle as glass in a couple of years. Not sure if it was the acidic condensate or the reaction process, but it began to leak.... Now I use a PVC drum trap but other devices can be cobbled together of course.

Still- fantastic installation. Sorry the owner is going to cover the piping!

GW

no llh

we just did a job that the viessmann pump acted as the primary, system pumps are the secondaries.

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GW

just wondering

How did you determine that? Guesstimate or measurement?

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Perry_2

Estimate based on...

I measured the supply and return boiler temperature. Then looking at the pump curve for my pump (Series 100) and calculating possible heat loads at different flows (Delta T * Flow = Btu/Hr) - it only made sense that I was operating at about the dead head region of the pump curve. That indicated that system head was about 8 ft. Too much for the built in pump on the 6-24.

Perry

Ted_9

Install

Looks good Gary. What's the pex for? Staple up? Are the first sets of tees for rads?
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GW

tees

The first set goes to the existing second floor baseboard system. There was an old boiler with circs up in the ceiling and a taco SR control, so we just took the high temp pipes over to the prevoius hi temp heating system.

So after the temp gets knocked down a but from the high temp, it goes to the low temp, making for a nicer, wider delta T, letting the boiler run longer.

The pex is for a climate panel system, about 800 sq ft.

Gary

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GW

temp

basing off of temp is just guessing, there are a few variables that could cause the delta t to fluctuate, like how hot the water is, and how warm the house is, and if the heat emmiters have crud on them. I suppose the LLh doesn't hurt, just adds some bucks to the job.

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