Joined on June 4, 2011
Last Post on December 7, 2013
@ November 5, 2013 4:36 PM in does everything look Okay?I've been waiting for someone to point this out but can hold my tongue no longer.
There is no way that system can be flowing correctly. It is pulling both supply and return water. Although I would pipe it primary secondary because of those 1/2" pex lines. The only way this can work is if that tee coming off the supply is changed out for a 90 degree elbow. That way the pumps are isolated to the supply.
Just my opinion,
@ November 5, 2013 3:39 PM in Final Boiler Decision: Peerless PF vs Weil McLain GV 90Did your contractor do a comprehensive heat-loss on your home?
@ November 3, 2013 1:48 PM in CO GeneratorAnybody interested in a beautiful carbon monoxide generator, only 50 bucks!
@ November 1, 2013 11:27 AM in Bosch Greenstar Combi 100 / Not sufficiently heating three zonesThis is happening because the pump inside the boiler is pushing past the zone pump due to the pumps being piped in series. What did your installer say about re-piping the boiler correctly?
@ October 29, 2013 1:40 PM in code man says my DHW tank has to go as a heat source What now?I still think that the vented space heater is the best way to go.
1. You will never freeze to death if your solar power goes out.
2. You can still use the water heater as your heat source with non-O2 barrier tubing. Remember, a water heater is glass lined to operate using oxygenated domestic water. All you have to add to the existing piping is a bronze pump and mixing valve.
3. It should last as long as any standard water heater and the vented gas room heater will get you through inspection.
4. When smaller mod-cons come out (which they will) you can get one that is properly sized.
5. Back-up heat is a necessity where you live, and the mod-con will break down someday and you might have to wait a few days for parts for a technician
@ October 27, 2013 3:24 PM in code man says my DHW tank has to go as a heat source What now?I think everyone agrees that what you are doing is operating safely and doing so in the best way possible for your situation. Until the manufactures catch up with the low BTU's required for these new highly insulated homes you are stuck (the power needs of your home are a whole different issue) The codes for your area just do not take into account for your unique situation. Using a water heater as heat source is commonly done here in the U.S. , many jurisdictions still allow open systems doing both domestic and space heating.
That said, how about using a vented gas wall heater and call that your main heat source for inspection. Try leaving the radiant hooked up for the inspection and tell him that it is just a project you are working on. He may make you disconnect the water heater but a couple of pex couplings to reconnect the radiant is a cheap price to pay. When boilers finally catch up with the lower BTU needs of many, you can always replace the water heater. As a bonus, the direct vent units will work with no power. If your solar ever goes down you have an alternate heat source and freeze protection.
Just a thought.
Just do a search on Google under "vented gas space heater" and you will find plenty.
@ October 27, 2013 1:07 PM in mod-con boiler as back upYou are looking at 20 to 30k or more in materials alone. At that price paying to have a designer come in and do a layout for you (including a heat loss :) would be well worth the time and money. Trying to return items (especially from Internet vendors is a pain in the butt and supply houses aren't much better (especially when dealing with a homeowner (if they will sell to you at all). Better to have an itemized list and not have to worry about it.
P.S. Do not use one of the Internet designer / suppliers. You can work with someone over the phone and through e-mail until you get the right design for you. If you need a name, come here and we can recommend several people.
@ October 24, 2013 12:08 PM in Bosch Greenstar Combi 100 / Not sufficiently heating three zonesIf you still have 50% of the contract you should first speak with the original installer and give him the option of making it right. If that does not work use the money for hiring a qualified installer to do it right.
Does the PEX on any of the pipes say "for potable water only" ?
Make sure that the slab gets some sort of mixing device. If you continue to put 170deg water through it you will destroy the slab and the piping in it.
@ October 23, 2013 3:44 PM in Bosch Greenstar Combi 100 / Not sufficiently heating three zonesIt looks like the piping to the manifolds is too small. You are not piped primary / secondary. That unit has an internal pump to handle the primary side. You are pumping into your expansion tank. I would suggest that you have all of your near boiler piping re-done per the instruction manual (which is very hard to follow). Get rid of the PEX for the primary loop and use the proper size copper or black iron.
Just my opinion. As well, you have no means of controlling the temperatures for the different zones.
@ October 19, 2013 2:48 PM in code man says my DHW tank has to go as a heat source What now?I don't think that the Takagi units have the H stamp. Take a look at the Navian units, they offer boiler only models. Not sure about the pricing. It has an internal pump, I didn't look at the piping diagram but I think it has to be piped primary secondary so two pumps are required. Its max electrical usage is 137 watts. That and a Bumblebee for the secondary might be a good match. They also offer a pre-fab low loss header which would make piping a snap. Here's a link.
@ October 19, 2013 11:59 AM in Need advice pleaseTake J-Star up on his offer. The people who quoted you previously without doing a heat loss should be shown to the door. Those boiler sizes they quoted you on are insane. I would be surprised if the boiler size (after a heat loss is done) even with the future addition comes out to 100,000 BTU,s. One of the biggest problems people come to this site for is over-sized short cycling boilers. Don't get sucked in because your in a hurry. Have it done once and have it done right.
Just my 2 cents,
P.S. keep us posted, I would love to hear what your actual heat loss is.
@ October 18, 2013 1:04 PM in Mono-flo or Parallel piping is small home?An easier way to do the reverse return piping would be to start at boilers supply and connect to BR1 then BR2 then MasterBR and end at Office. that way you avoid looping all the way back around the systerm. hope this helps.
@ October 18, 2013 12:13 PM in why use primary/secondary if not needed?Are there any other gas appliances in the home?
@ October 16, 2013 1:22 PM in code man says my DHW tank has to go as a heat source What now?How about using the smallest cast iron boiler available and an electric water heater as a buffer tank? You might be able to find the electric water heater and maybe even a boiler on Craigslist. Just a thought.
@ October 4, 2013 1:12 PM in First high efficiency boiler on my own...short cycling! Help!http://www.heatinghelp.com/forum-thread/147188/Great-Article
Read this artical and your problems may be solved.
(credit given to Chris as original poster)
@ July 20, 2013 11:51 AM in I know now why I quite coming to the wallIf you are going to quit The Wall, you might want to spend your free time taking grammar and spelling courses.
The Wall is a tool for all to use.
@ July 19, 2013 1:29 PM in Faucet IDHow did you all figure it out? Nick Nolte by day and Rob G, PHCC by night? I must retreat now to my man cave above Gotham City. Alfred has a cold beer waiting.
@ July 19, 2013 1:00 PM in Faucet IDWhy not just replace it with a Chicago faucet? I know restaurant owners are cheap, but with the time you take identifying it you may as well replace it
@ July 19, 2013 11:53 AM in Concrete Slab, pavers or bricks under Mod/Con BoilerI prefer pavers or solid blocks that way if one appliance ever leaks (and it will) only the base of that individual unit gets wet. With a solid slab they will all get wet
@ July 11, 2013 3:50 PM in Signing In?I can't stay signed in even if I leave the window open. I just had to sign back in after leaning my last post? And I have also timed out? in the middle of a post.