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  1. pwschiller

    Building a house, want a gasser, advice needed

    Below is what Noah described, again: ihookem, you don't seem to go into much detail other than to say "... the best insulation job a guy could get..." Just so we are comparing apples to apples, is your house around 2200 sf of heated space? How did you insulate your walls to an effective R30+...
  2. pwschiller

    Building a house, want a gasser, advice needed

    This whole thread started out with someone who is planning on building a new 2200 sf house and heating it with a gasification boiler. Many figures have been thrown around regarding insulation and energy savings, but you have taken exaggeration to a whole new level. 200-300 manhours? That's 5 to...
  3. pwschiller

    Building a house, want a gasser, advice needed

    Absolutely. The 1998-1999 New Hampshire Forest Products Market Report shows split cordwood, delivered going for $80-120, so the price has roughly doubled since then. Many of us, including the OP, have wood lots and we cut and split our own firewood. The amount of labor involved to process the...
  4. pwschiller

    Building a house, want a gasser, advice needed

    I've seen 0.33 air exchanges per hour as a recommended minimum for a house to be healthy to live in. It's not an exact science I'm sure. It will depend on what you use for building materials (and how much they outgas), how many people and pets live in the house, what type of cooking you do, etc...
  5. pwschiller

    Building a house, want a gasser, advice needed

    Every additional $5000 that gets rolled into a 30 year mortgage at 5% interest amounts to roughly an additional $320 in annual payments. Where I live (which is close to where Woody lives), a cord of green, split hardwood delivered is about $160, so two cords is roughly equal to the cost of...
  6. pwschiller

    Building a house, want a gasser, advice needed

    Hi Woody, I timber framed my house in Freedom, NH about eight years ago. The frame is wrapped with SIPS (structural insulated panels). We have a southern exposure with a high proportion of windows facing south. Most years the heat doesn't even come on until November, because of the solar gain...
  7. pwschiller

    Laddomat 21 Presentation

    You can get the Laddomat 21-60 and the 21-100 (up to 120kW model) from Brian Crawford, http://www.upnorthenergy.com I have a Laddomat 21-100 that I'll soon be installing with my Effecta 60 kW boiler.
  8. pwschiller

    EKO 80 overheating

    I'm by no means an expert, but I did borrow a 1st edition of John Seigenthaler's Modern Hydronic Heating through interlibrary loan. Even the 1st edition was incredibly helpful. I think that the worse place to connect the expansion tank would be close to the pump outlet. I had to return the...
  9. pwschiller

    EKO 80 overheating

    From Modern Hydronic Heating: For example, a Taco 008 pump curve crosses the following points: 0 GPM @ 15.2 Feet, 10 GPM @ 8 Feet, and 14.6 GPM @ 0 Feet. The pump curve for two 008's in series would cross through 0 GPM @ 30.4 Feet, 10 GPM @ 16 Feet, and 14.6 GPM @ 0 Feet. Where your system...
  10. pwschiller

    Anybody Heat A Small Greenhouse?

    It's something I'm considering down the road. I plugged values into a heat loss calculator: http://www.builditsolar.com/References/Calculators/HeatLoss/HeatLoss.htm so that I would have a general idea of the heat required. For a 12x16 greenhouse using R=1.43 for twin-wall polycarbonate for the...
  11. pwschiller

    Anyone Seen/Heard of the Taco Bumblebee Pump?

    Thanks Eliot. I'm pretty sure I understand your diagram and I like the simplicity of it. In my case, I think that it would make more sense for me to have the buffer tank in my workshop. Half of my heat load will be the shop itself and I won't have any high temp emitters in the house, the DHW...
  12. pwschiller

    Anyone Seen/Heard of the Taco Bumblebee Pump?

    I don't know anything about the Bumblebee, but I've been trying to come up with a good way to pull only as much hot water off the top of the tanks as is needed to get the job done. That would minimize mixing in the tanks and it would also minimize water temp and heat losses in my underground PEX...
  13. pwschiller

    EKO 80 overheating

    Where are your expansion tank(s) attached? From Modern Hydronic Heating:
  14. pwschiller

    Why is everyone down on non gassers?

    Even the generalization of all non-gasification OWB as "smoke dragons" isn't necessarily fair. I thought that the picture that I posted answered the "Why is everyone down on non gassers" question pretty simply, at least from the viewpoint of the general public. There are lots of OWB owners who...
  15. pwschiller

    Insulating Below-Deck Dry Radiant

    I'm wondering what the best methods are for insulating between or underneath the floor joists when you have radiant tubing below the subfloor to heat the floor above? Is it important to have a reflective layer (such as on foil faced foam sheathing) and would that be even more important when...
  16. pwschiller

    Why is everyone down on non gassers?

    I just went to the Hawken website and found no mention of the GX10 being a gassifier. In fact, under the "How it Works" tab it has the following description: If the GX10 does have a secondary chamber, it certainly couldn't gassify for very long after coming out of smolder mode, since it only...
  17. pwschiller

    UPS Battery Backup Problem

    Mine was not inexpensive. The APC Smart-UPS 700XL that I have specifies "Waveform type = Sine wave" in the tech specs: http://www.apc.com/resource/include/techspec_index.cfm?base_sku=SU700XL The APC Back-UPS XS 800VA has no mention of waveform type, crest factor, or even output frequency in the...
  18. pwschiller

    UPS Battery Backup Problem

    Jim, I'm curious what make and model your UPS is? I have one that I am planning to use, which got me wondering whether it would work. It claims to produce a "sine wave": http://www.apc.com/resource/include/techspec_index.cfm?base_sku=SU700XL The following page...
  19. pwschiller

    Efficiency misconceptions........

    That was my thinking as well. An efficiency rating difference of 3-5% didn't matter to me so much, it came down to ease of use. Also important to me was having a negative draft boiler to minimize or eliminate smoke escaping indoors and a sensor to automatically shut down the fan near the end of...
  20. pwschiller

    Just ordered an Effecta, boy the wife is gonna be mad

    I've spoken to two Effecta owners who have their systems running, one with a 35kW in Michigan and the other a 60kW in New Hampshire. Both of them had nothing but great things to say about their systems. I don't know whether they spend time on Hearth. Hopefully someone will chime in, but if...
  21. pwschiller

    Just ordered an Effecta, boy the wife is gonna be mad

    My comment wasn't implying a need to communicate directly with Effecta, but the fact that I could if I had to. Brian Crawford has been able to answer all of my questions. Also, the fact that Effecta has an English language website: www.effecta.us and has invested the time to produce English...
  22. pwschiller

    Just ordered an Effecta, boy the wife is gonna be mad

    Price certainly was a large part of my decision. Also, my understanding was that if I purchased a Froling from TarmBiomass, that it had to be installed by one of their certified installers if they were to warranty it. That would have pushed the overall cost well out of my reach. I also didn't...
  23. pwschiller

    Just ordered an Effecta, boy the wife is gonna be mad

    That is, in the U.S. and Canada. I think they've got something like 40% market share for cordwood boilers in Sweden and they are exporting to other countries as well. My Effecta 60 kW shipped from Michigan last Thursday. I'm waiting to hear from the freight carrier. I'm really excited to get...
  24. pwschiller

    Has anyone ever wired a....

    The ControlByWeb X300 looks like a great way to go and the prices seem reasonable. It appears as though the Dallas/Maxim DS18B20 sensors that they use would probably not fit in a standard aquastat well though, but would have to be surface mounted instead. I haven't found any physical dimensions...
  25. pwschiller

    Has anyone ever wired a....

    The temp sensors come with 1' leads, but can be extended. If you click on the "Support" tab you can see user manuals. This is from the Temperature Module Users Manual: "In general, the more sensors you have connected to the temperature module, the less distance there can be between them and the...
  26. pwschiller

    Has anyone ever wired a....

    The sensors on the Azel dual digital temperature gauge can supposedly be extended by several hundred feet: http://www.azeltec.com/catalog.0.html.0.html#DIGIT-STAT The units come with two sensors and a dual display for around $75. Not as slick as jebatty's or nofossil's systems and not as cheap...
  27. pwschiller

    Expansion Tank Volume

    You're welcome. I wasn't insulted by you. Yes, they should come set properly, although you could have gotten one that was not. Then you definitely shouldn't try the pressure reducing "trick" that Maple1 and I were discussing. Yes, that was what I meant. @...
  28. pwschiller

    Expansion Tank Volume

    What Maple1 and I were discussing related to draining some water from the system at say 120°F, in order to bring the pressure back down to 10-12 psi, could be done to reduce your normal operating pressure range, but I wasn't implying that anyone should purposely undersize their expansion...
  29. pwschiller

    Expansion Tank Volume

    No, I don't think that there have been. Several of us have recommended checking the pre-charge pressure in your expansion tank bladders. That needs to be done when there is no water pressure pushing on the bladders. Your system should have been piped in such a way that you can close a valve to...
  30. pwschiller

    Expansion Tank Volume

    I think that it depends on how you use your system. For some people there is no off-season; they use their wood boiler and storage year-round for DHW and rarely if ever let the temp get below 130°. It's also assuming the following: In other words, you have your domestic water supply connected...