Joined on May 31, 2005
Last Post on March 2, 2014
@ March 2, 2014 3:03 PM in Bell and Gossett 100 mystery soundsInstead of wrestling with the old pump you could just take it out and replace it with a modern wet rotor design.
A BnG NRF22 or Taco 007 are nearly direct replacements from a hydronic standpoint and the flange dimensions are identical.
In a Grundfos you could select a 15-58 3 speed or a 15-55 Alpha variable speed which will use 60-80% less power and will auto adapt to your systems flow characteristics.
A Wilo 21 series 3 speed will do the same as the Grundfos 15-58.
All of these will use less power than the BnG 100 by at least 25%.
Just a thought.
@ March 2, 2014 12:16 PM in New Home, Which heat source????Cost per million btu with an air source heat pump would be around $19.
With a good pellet boiler running radiant floor (much higher comfort level than ASHP) you would be looking at about $13 so about 40% less cost with the pellet boiler system plus much better "feel" in the home.
We have installed 15 Windhager BioWin pellet boilers to date, beginning November of 2012, and found them to be an excellent product. There have been no issues or problems of any kind with them and two of the installations are heavy duty commercial use with multiple boilers.
One pair which was fired up in September of 2013 now has over 30 tons of pellets consumed between them. 0 problems. Just clean them every 600-800 operating hours and keep them filled. They are a fantastic product.
@ March 2, 2014 11:55 AM in Emergency contact info for Viessmann?I find this difficult to believe Paul but I have been told by the distributor contact that we will not receive technical assistance with this until Monday. Status update......
From what my guys are telling me (I'm about 1,300 miles away) the heat exchangers have not failed. That was info from the building superintendent and was not accurate.
What they have going on is 2 out of 4 boilers on the rack that will not fire or even make an attempt to do so. They are trying to determine if the issue is in the cascade control or in the individual boilers.
The boilers in question do not fire even on a burner test. Pump energizes but not the inducer.
@ March 1, 2014 8:30 PM in Emergency contact info for Viessmann?Tried every number I have from old contacts but apparently Viessmann does not maintain tech service staff on weekends and nights like they used to.
The thing that is rather disconcerting for me is that there is no local support from the new rep agency or the distributor either.
This is a huge change, a seismic change, from the way Viessmann used to do business and it's not acceptable. Period.
Makes me wonder what is going on........
@ March 1, 2014 12:12 PM in Emergency contact info for Viessmann?Why do worst case events always happen on weekends.........?
Looking for any number to call at Viessmann that I can get help with 3 failed heat exchangers ASAP.
Our old rep company had 24 hour contact #'s but the recently hired people apparently do not.
Anyone have a personal phone # for someone/anyone at Viessmann?
@ November 26, 2013 1:00 PM in Condensing gas boiler you installI avoid anything with a Giannoni heat exchanger like the plague.
Viessmann and TT all the way.
That being said, all M/C boiler require regular maintenance, as in religious regular maintenance. Double the emphasis on that if the boiler is running LP gas.
@ April 7, 2011 11:41 PM in Getting the wild ones this yearAnd where else do you go but to "The Wall"
My last post was inquiring about tubing the grade below a freezer. Now I have a customer who has a 32x 60 greenhouse under construction and wants to do root zone heating. Anyone ever done that?
My questions are:
Do you insulate the sub strata, like down about 2-3 feet? He wants to grow tropical fruit like bananas and citrus and hopes to keep the trees in pots to move outside in the summer. (These will be very large pots, i.e. fork lift movable)
I know the edge insulation would be critical as usual, but then, if you insulate the "floor" at a depth of 2-3 feet you are basically creating a "tub" which I would assume could create saturation problems. Should provision be made for drainage?
The heat loss calc for the building itself is no problem but I'm struggling with how to account for heating up 40-50 tons of dirt to 55* Talk about flywheel effect.........
Any input from the resident guru's?
@ March 31, 2011 7:14 AM in Heating the ground under a commercial freezer......I would have to agree on the weight. In this particular job, which is small in comparison to many commercial freezers, the calculated load for each section of pallet rack is near 40,000#. That's each section 42" x 120". The racks are going to be 24' tall with a ceiling height of 30'. Pretty hard to suspend that much weight without some serious support underneath........like mother earth herself.
Hat tip to Paul for some excellent documentation and pictures sent my way. Thanks bro.
@ March 29, 2011 10:48 PM in Heating the ground under a commercial freezer......If you would be so kind, please send me the pictures you referred to along with any other info or notes about that project.
Thanks in advance!!
@ March 18, 2011 10:14 PM in Heating the ground under a commercial freezer......Talking with the architect, his concern was that eventually, no matter how much insulation you put on the ground under the freezer, it will freeze up and possibly cause the floor to heave, buckle or crack.
@ March 18, 2011 10:02 PM in Japan Nuke plants"Things are getting worse - and at least 3 of the
reactors are done for life - and have partial meltdowns; but,
containment is holding (as of last reports) so there will not be
anything approaching Chernobyl. The question is can they save the
other 4 (and those have not yet hit the news).
key item is that the plants were designed for either 7.9 or 8.2
earthquake and they got hit with a 8.9 The difference between 7.9 and
8.9 is a factor of 10 (its a logarithmic scale).
Overall I'd say the plants have stood up well given what they were hit with.
far as the US reactors. We have about 30 similar reactors here (GE
Boiling Water Reactors - BWR) - and many with the same vintage
containment. Key is that very few of these are on an ocean where
they could be hit with a tsunami an hour after the earthquake (and it
was the tsunami that took out the diesel generators).
other 70+ reactors are Pressurized Water Reactors - and I believe that
design is inherently more capable of dealing with a total loss of power
than a BWR.
The new Generation III reactors
(for example the AP-1000 which will start construction later this year
in the US) are designed to handle a total loss of power - and have
enough passive cooling to prevent a meltdown."
I haven't heard anything in the last couple days because they are in the middle of refueling the plant he works in. ...makes him a wee bit busy.
@ March 18, 2011 9:51 PM in Heating the ground under a commercial freezer......There's a chance I might get involved (sucked into) a commercial project this summer that has 28x36 freezer area which will be maintained at -20*. The architect suggested to the builder that he get in touch with someone who can give both of them some guidance. So guess who got the phone call......
I've done enough reading on the subject to be dangerous but I really feel like the one eyed man in the land of the blind. Not enough knowledge about it to be confident in what I recommend.
So I'm wondering if any of you guys have done sub-grade heating under a commercial freezer. What did you use for control? What type of substrate did you place the tubing in? etc etc.
@ December 17, 2010 10:35 AM in How's your weather?Left Wednesday afternoon about 4:30 and made it to Wausau Wis by about 3:00AM. Crashed in the back seat of the truck. (Left the truck running because it was -13* outside). Hit the road at 8AM and drove in to the twin Cities picked up the 2 wood boilers I was after and had lunch with Martin Lunde and Jim Saufferer at Broadway pizza just west of the dome....or what's left of it. There is a LOT of snow in Minneapolis that's for sure. Had dry roads across the UP of Mich and through Wisconsin out and back but Martin had called me and advised not to go around through Chicago. Glad I didn't as I would have been pulling 5 tons of weight through slop all the way back.
Last weekends big blow left us with about a foot of white stuff. One of my guys was snowed in so bad he didn't make it to work until the county came and scooped out his road with a payloader. The plows got stuck in it.
@ December 15, 2010 11:56 AM in Buderus G124x leakingDrew just called from a customers house and relayed that the return elbow on the bottom left of the block is perforated/rusted through. On the parts diagram (p/n 05407352) it appears that the elbow is secured to the block with a jam nut and gasket behind it. On the boiler in the home, it looks like it's a bushing. Things are so corroded it's hard to tell what we are looking at.
If anyone here has had one of these apart and could tell us what the configuration actually is please call Drew at 231-920-7471 . Tech service call center @ Buderus was no help in determining how this piece is actually put together. We don't want to try and take that bushing/jam nut out unless we have to. Going to try and clean up the threads and seal up with some thread cord.
@ October 13, 2010 5:03 PM in Calculating heating costs/math problemI'm asking these questions mainly for my own information/education as I don't get a chance very often to really look hard at these ICF buildings. As is the case on this job, and most in the economic armpit of the USA, commonly called Michigan, the first cost is the only thing that is considered.
Cd factors that reduce heating equipment input will be scarce for this building because of its largely uninhabited nature, so the only tangible difference would be the building mass. Other than that, the difference in R-value and AC/H are the only things that would really influence the building performance. Correct?
I looked up some records of propane prices locally since 2000 and found that they have increased an average of a little over 7-1/2% per year. I don't know if that rate will continue or what difference it would make in your model but I think that it's safe to say no fuel costs are going to go down. I listened to a webinar featuring an oil industry CEO a couple weeks ago and his position was that it is very likely we will see prices back at 2007 levels by the end of next year. Scary thought.
Thanks again my good man.
@ October 13, 2010 3:06 PM in Calculating heating costs/math problemYou wouldn't assume any difference in Cd factor for the high mass/low mass buildings?
@ October 13, 2010 8:48 AM in Calculating heating costs/math problemDesign delta T is 76* for our area. Those are the numbers from HVAC-CALC.
I used an efficiency of 95% for the Vitodens that will be running the system. I'm curious as to what factors would reduce that? My experience with those boilers applied to a low temp system shows that if parasitic losses are minimized it will easily hit that.
Of course dear sir, I will yield to your expertise in this area. I'm just a humble pipe fitter.........:)
@ October 13, 2010 8:35 AM in Calculating heating costs/math problemLocal cost of propane is running about $1.70/gl on a prebuy program. Our heating degree days are listed as 7800. I used a Cd factor of .85 for the steel building and .70 for the ICF.
Does your program factor in annual increases in fuel costs? 10 years ago propane was selling for $.59 here.
@ October 13, 2010 8:15 AM in Calculating heating costs/math problemI don't want to spout knowledge I know nothing about.......know what I mean?
I'll be out and about but we'll see if the Blackberry works in the basement of the day.
@ October 13, 2010 6:32 AM in Calculating heating costs/math problemThat would be sweet. The cost difference between the two buildings is near $110,000. Not all of which is simply attributable to the ICF part of the building.
The main source of the difference in the heat loss is the air infiltration factor between the two and then the R-value of the walls and ceiling.
The ICF proposal has a higher value in the walls of course and the ceiling will be under a ventilated attic at R-44 rather than R-19.
Heat loss came to 233K for the steel and 162K for the ICF construction.
Fuel source will be propane.
@ October 12, 2010 10:58 PM in Calculating heating costs/math problemI ran the numbers for the two building types and they are eye opening to say the least. Using the numbers I described above there's about 40% difference in heating costs alone.