Viessmann meets NASCAR-PGP

Paul Pollets

Some clients prefer German equipment. This took 2 years to complete and the owners moved in last week! They sponsor a NASCAR (they have 5) and own a large commercial electrical firm. The sytem in their new residence heats both the main residence (8500SF) and the offices (5000SF) The office is 200 feet from the main residence and we used Eccoflex Twin to connect the buildings. The boiler is a Vitogas100-60 with a 92g V300 indirect. The Vitotronic 300 computer manages the 2 motorized 4 way mixing valves, one for each building, each with a remote control TStat and sensor. Yes, I would have used the Vitodens wall-hung condensing boiler, had it been available at the time. Oh well....Room telestats were used sparingly. Wirsbo hePEX was installed on all levels. The Master bath WC and Entry feature custom etched glass that's unusual, to say the least. The home is in the shadow of Mt. Rainier, hence the glass theme. The floors of both structures make use of lots of tile or cement, making this a "radiant natural". The garage shop space is over 4000SF with 18ft ceilings. (HR would be drooling) I would have never figured this client to buy "Euro". When I asked him how he made his decision on purchasing the upgraded system, he replied "quality, ease of maintainence and longevity go a long way....". As a racecar mechanic, he particularly appreciated the advanced combustion system and its stainless gas trane. The best thing about living in the USA is the choices we get to make...eh?

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jackchips_2

Looks like

that baby could take Jr. out in the 500 although the Intimidator probably would have knocked it off the track in turn three. What car does he sponsor Paul?

Pretty, good work.

Paul Pollets

Car

TransTech

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Steve Ebels

Nice, real nice!

> Some clients prefer German equipment. This took 2

> years to complete and the owners moved in last

> week! They sponsor a NASCAR (they have 5) and

> own a large commercial electrical firm. The sytem

> in their new residence heats both the main

> residence (8500SF) and the offices (5000SF) The

> office is 200 feet from the main residence and we

> used Eccoflex Twin to connect the buildings. The

> boiler is a Vitogas100-60 with a 92g V300

> indirect. The Vitotronic 300 computer manages the

> 2 motorized 4 way mixing valves, one for each

> building, each with a remote control TStat and

> sensor. Yes, I would have used the Vitodens

> wall-hung condensing boiler, had it been

> available at the time. Oh well....Room telestats

> were used sparingly. Wirsbo hePEX was installed

> on all levels. The Master bath WC and Entry

> feature custom etched glass that's unusual, to

> say the least. The home is in the shadow of Mt.

> Rainier, hence the glass theme. The floors of

> both structures make use of lots of tile or

> cement, making this a "radiant natural". The

> garage shop space is over 4000SF with 18ft

> ceilings. (HR would be drooling) I would have

> never figured this client to buy "Euro". When I

> asked him how he made his decision on purchasing

> the upgraded system, he replied "quality, ease of

> maintainence and longevity go a long way....". As

> a racecar mechanic, he particularly appreciated

> the advanced combustion system and its stainless

> gas trane. The best thing about living in the USA

> is the choices we get to make...eh?

>

> _A

> HREF="http://www.heatinghelp.com/getListed.cfm?id=

> 104&Step=30"_To Learn More About This

> Professional, Click Here to Visit Their Ad in

> "Find A Professional"_/A_

Steve Ebels

Nice, real nice!

How many zones are running off the main piping in the pics of the boiler room? Additional pumps or zone valves downstream? Room feedback? I love to see a simple, well thought out design in the mechanical room. I was just in a log home that's approx. 4,800 sq. ft and counted 21 circulators in the mech room. Some of these loops had 3-4 zone valves on them. Talk about a waste of electricity and un-needed complexity. The owner said his electric bill ran over $200/month and he wondered why.

Robert O'Connor_7

Nice Job!

If you would be so kind and explain to me what the bypass? is directly above the pumps. I'm not a novice, although you guys seem to have your sights set. I'm really not in a market where i see too many like that. The red box? (below) is the four way valve w/motor attached,(Right?) so whats the additional bypass for?? Inquiring minds want to know. boc ps looks real good!

Unknown

The Viessmann \"system approach\"

I just got back from a meeting in downtown Boston. Over $21,000 in Viessmann equipment alone. 2-Vitodens w/ cascade and 120 Vitocell.

(Jaws dropped.)

Won't know if I got the job for 2 weeks. My first Viessmann sales pitch.

Nice job Paul.

Gary

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Paul Pollets

The bypass

uses an Oventrop pressure bypass differential valve. The PBD prevents the pumps from dead-heading and allows adjustment of the pump curve. The orange motors cover the mixing valves.

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Paul Pollets

Zones

The system uses 2 pumps and 2 mixing valves, one for each building. The main residence has 7 zones with TStats and telestats, the office uses 1 zoned manifold, with 2 running "wild". Setpoint is 70 degrees with 1 degree accuracy. 21 circ pumps in a 4800SF residence? Someone needs some design help. Heating 13,000SF with a 4 amp draw makes sense...Heating 1/3 the space with over a 40 amp draw does not. Just my opinion....

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Robert O'Connor_7

PBD

The PBD? Does that mean the system is continuous circulation? If not, then if the zone, T-stat, or outdoor reset control turns off the circulator, then why would it become neccessary. Something in your design keeps the pump on? or when the mixing valve creates the deadheading situation. I'm very interested & would like to know more of how your race car works... boc

Dave DeFord

Looks like..

an Indy Lights car or maybe an Indy car by the picture on the trailer. It is definitely not a Winst..er... Nextel Cup car or any other sort of full bodied stock car.

S Ebels

The European

Design criteria or method if you will is to establish constant circulation as much as possible. To regulate temperature they modulate the water temp of the zone and/or the system. The Viessmann control on the boiler runs the primary circs and the mix valves plus the circ for the indirect tank. If you have constant circ in a zoned system that is capable of shuting completely off, then you need a PBD valve.

Constant circ is the way to go especially in high mass systems such as Paul is dealing with here. The heat is always "on", the amount of btu's being transfered is what changes with this type of system control due to the "floating" water temp. Doing it this way eliminates the up down cycle of the room temp. Much more comfortable and efficient.

Paul Pollets

Thanks...

for answering the question. the heating curves are set at .6 and .7 respectively. They could be turned down further, but the Mrs. likes it a tad warmer.

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Art_3

Beautiful Job!!

I really like the work that was done here. You should be very proud of yourself. However, I do have one question. Why is it that it seems that whenever I see pictures on the Wall of the tubing install before the gypcrete pour, it seems that the spacing is always 12"? 12" centres on tubing with tile or slate floors will guarantee you warm and cooler spots on your finished floors - you will actually be able to determine where the tubing is just by the temperature of the floor. Especially with a project of this magnitude (and budget), why not tighten up the spacing to 6" centres? Tubing is probably the least costly component in radiant, and this way you are guaranteed to have even temperatures across the floor.

Just a thought.

Paul Pollets

Loop centers

The loop center is dependant upon length, flow, floor covering and surface panel temp desired. Many of the rooms in this project use 6" and 9" centers. The Wirsbo ADS software allows "What If?" loop sizing scenarios. I design for low flow,low head (circ pump sizing) and low water temps. I trust the software and it always works. Last week, I measured the floors with a digital infra red thermometer. The floor surface panel temps were plus or minus 1 degree within any part of the floor. There was no "stripping" effet.

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Art_3

Thanks for clearing

that up for me. I realize that with pictures, its not always easy to try and determine the actual spacing. It is also very heartening to see contractors like yourself that take the time to design the radiant properly and then abide by the design that the software spits out.

Again, beautiful job!!

Dan Foley

Nice.....

looking job, Paul. We've been getting into some Viessmann stuff as well. See you in a couple of weeks. -DF

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