Joined on November 26, 2011
Last Post on December 5, 2013
@ October 29, 2012 1:43 PM in Unheated basement, cold main floor, hot 2nd floorIf all the floors are uninsulated, your HOA should probably undertake to insulate the whole place. Get an insulation contractor to quote you on wet-spray cellulose or foam or something that can properly fill all the voids and your comfort level will increase quite a bit.
You may still have balance issues afterwards but you need to insulate first.
@ October 29, 2012 2:43 AM in Keeping Steam System Completely Off in Chicago WinterVewwwwwwy interesting. What era?
@ October 29, 2012 2:40 AM in Inspector comes to his sensesUnfortunate, because a few feet of CPVC on the hot side can really take the stress off.
@ October 29, 2012 2:37 AM in Navien CC210 natural gas.With you 100% there - a proper room-by-room heat loss will get the boiler, pipe, and emitter sizing close enough that the system will balance. Tuning the reset curve(s) can take awhile.
@ October 28, 2012 7:42 PM in Navien CC210 natural gas.Just bump the curve up a few degrees and the TRVs will move out of full open position during normal operation.
@ October 28, 2012 7:36 PM in replace analog with digital thermostatThat looks like a rebadged Honeywell http://www.honeywell-thermostat.com/line-voltage.html
@ October 28, 2012 5:46 PM in Using an indirect tank as a heat exchanger.Is there something in particular about this boiler that made you choose it over other designs? A pressurized boiler will simplify the system and reduce or eliminate chemical requirements.
What kind of radiation do you currently have? What design temp is/was it sized for?
You really need to work through the entire system design before you purchase anything. Outdoor reset, zoning, and other factors can change your piping layout; getting it right the first time will save you both time and money. If you have budget constraints, deciding what to buy now versus later should follow a complete design.
@ October 28, 2012 11:51 AM in Using an indirect tank as a heat exchanger.Whose gasifier? Open or closed system? Most gasifiers require a large buffer thank in order to operate safely at maximum efficiency.
Read this http://www.caleffi.us/en_US/caleffi/Details/Magazines/pdf/idronics_10_us.pdf before you start buying parts.
@ October 28, 2012 11:45 AM in Help - my pipes sank!If it's not big enough, a nipple wrench may do the trick.
@ October 28, 2012 1:41 AM in Navien CC210 natural gas.actually a proportional, modulating thermostat.
@ October 27, 2012 1:25 AM in Navien CC210 natural gas.Assuming there's no indoor sensor and associated controls logic, an indoor tstat is still useful as a high limit control Set it a couple degrees higher than the desired indoor temp and it will prevent the boiler from firing when there is heat gain from some other source (wood stove, solar gain, cooking heat, etc.)
@ October 24, 2012 3:32 PM in Failed steam boiler and chimney too small to ventor at least having some drawings and a few photos, one other option comes to mind:
Install a steam boiler that comes factory configured for power venting (Burnham Independence PV comes to mind, which works with 3” AL29-4C) plus an indirect water heater. This will simplify the venting and may allow you to use the existing chimney. It will also give you more hot water at better efficiency than most tank heaters.
@ October 23, 2012 11:50 PM in Ok to put Stainless Tubing in concrete?A couple years back, Wilo told me they were going to build the potable version of one of their new pumps in stainless rather than bronze -- because it was cheaper.
Viega rep told a few months back that thinwall stainless ProPress pipe & fittings frequently cost less than the copper equivalents.
@ October 23, 2012 8:48 PM in Header SizeI'm envisioning a street 90 threaded into a standard 90 to create the U-turn feeding the drop header. That configuration actually removes one threaded joint from the chain (as compared with two standard 90s joined by a close nipple.)
@ October 23, 2012 6:23 PM in Series ECM BlowersGiven that these are EC motors, the question is really about controls.
@ October 23, 2012 11:31 AM in New Mini tube installationI look forward to seeing what kind of numbers you get from the MegaSteam / EZ-Gas combo.
@ October 22, 2012 6:56 PM in Pop quiz... what is it?But this looks like them http://goo.gl/Anx2p
@ October 22, 2012 6:06 PM in Pop quiz... what is it?from an old vapor/vacuum system, perhaps?
@ October 21, 2012 8:49 PM in Other zones heating upIs the Point of No Pressure Change -- usually where the expansion tank joins the piping.
It would really help if we could see a photo or at least a diagram.
@ October 21, 2012 11:52 AM in Teflon tape/paste and steam.Does anyone make PTFE tape in 3/8" width? It'd sure be useful on smaller fittings...
@ October 21, 2012 11:11 AM in If you were to build today...A tight envelope with proper siting and passive solar design can cover 80% or more of a building's annual energy requirements. After that:
Radiant floors/walls/ceilings (depending on the architectural design) with active solar thermal as the primary heat source and night sky cooling for the summer season.
100% MUA with an ERV, tempered by massively oversized coils (to make use of the same distribution temperature as the radiant system does.)
@ October 21, 2012 9:57 AM in Other zones heating upZone pumps are on the returns? Where is the PoNPC?