Joined on November 26, 2011
Last Post on March 9, 2014
@ February 17, 2014 12:40 PM in Adding automatic vent damper to old cast iron boiler?If the burner is not running, how much air will actually go up the stack?
@ February 17, 2014 12:24 PM in Waterlogged Compression tanksare these bladder tanks, or air-over-water? If less than gallon of water has been added, what happened to the system pressure?
@ February 16, 2014 2:08 PM in Viega press sleevesIt's Rehau that uses F2080, not Viega.
I really prefer the flow rates on F1960 & F2080.
@ February 16, 2014 12:34 PM in Single stage, two-stage and multi-stage, which oneI have seen quieter and more comfortable results from two-stage FWA systems by far.
When I did some research for a customer last fall, I found out that Rheem eliminated their full modulation residential FWA furnaces. They still have fully-modulating fans in their highest end models, but those now have two-stage burners.
I'm willing to be educated here, but how can a single stage burner and single speed fan deliver real comfort?
@ February 15, 2014 1:21 AM in Viega press sleeveshttp://www.siouxchief.com/products/supply/powerpex-systems/astm-f2080/sleeves
@ February 15, 2014 1:05 AM in Meet The Cozyinto your onboard controls? Once they're 'net connected, they could easily be configured to query a nearby station or PWS in order to anticipate demand.
@ February 14, 2014 11:08 AM in Cold daysince he first posted the diagram http://www.heatinghelp.com/forum-thread/149618/Boiler-Bypass#p1326676
@ February 14, 2014 10:27 AM in Floor drain tank and condensate tank/lifthere's a new one from Liberty http://www.libertypumps.com/Products/Category/SubCategory/Product/?p=81&s=28&c=14
@ February 13, 2014 6:21 PM in New Hot Water Heatera standard boiler drain will work OK in most places. If you have the kind of hard water we do, a brass nipple and a full port ball valve will let more of the rocks out.
@ February 12, 2014 11:47 AM in Heat gain in computer server roomNormally everything in a data center is redundant, either 2N or N+1 depending on budget and size. What about future growth? Blade servers can spew phenomenal amounts of heat -- I've worked on data centers designed to 900 BTU/sq ft. I'd probably recommend three 12k units or perhaps two 20-24k ones.
@ February 12, 2014 9:55 AM in heat loss calculatorsDaikin Altherma?
You can install radiators where you replace baseboard. If you size them for 140ºF water and then add a TRV, they will behave well at the higher temps you need for the existing baseboard. As you replace more and more of the BB, you can turn down the system temp and raise your efficiency.
@ February 11, 2014 9:26 PM in heat loss calculatorsReally? There are so many wonderful options that work better. Do yourself a favor and design the system for a lower water temperature, ditch the zones, and install thermostatic radiator valves (TRVs) on each radiator.
Edit: See you are looking at a Biasi B-3, which seems to indicate you are planning to use oil. Assuming you have no NG availability, and looking at the volatility of both fuel oil and LPG markets, I'd give some serious consideration to a VRF air source heat pump.
@ February 11, 2014 8:32 PM in Logamatic 2107 or Tekmar 260 ?as well as a few small UPS models with built-in power conditioning. Generally speaking quality is proportional to weight (exclusive of batteries in the case of a UPS.) A true double conversion online UPS can break these rules, but even those need some burly inductors in order to keep their internal electronics safe.
The prevalence of BS marketing-speak using the term "power conditioner" is truly unfortunate. A few minutes with a 'scope in the hands of a competent electronics tech or engineer will clearly separate the wheat from the chaff, and there is a LOT of big-name chaff out there.
@ February 11, 2014 8:21 PM in delta TA transparent PV panel excited by low level infrared? Many, many millions.
@ February 11, 2014 8:14 PM in Logamatic 2107 or Tekmar 260 ?The overwhelming majority of UPS systems smaller than about 15 kVA do NOT provide any real power conditioning. Garbage in = garbage out, generators definitely included.
Real power conditioning for an AC line requires a minimum of several pounds of iron and copper -- stuff that is not inexpensive to make or ship, and therefore not something you will find at your local consumer electronics or computer shop. The good news is that they don't wear out and are widely available on the secondary market for a fraction of their original purchase price. e.g. http://www.ebay.com/sch/?_nkw=oneac+power+conditioner
@ February 11, 2014 6:51 PM in heat loss calculatorshttp://www.slantfin.com/index.php/homeowners/ipadapp
@ February 11, 2014 10:54 AM in Does a drop-ceiling in the basement help with heating the main floor?http://www.eia.gov/neic/experts/heatcalc.xls is worth a few minutes of your time. Be sure to update the fuel costs and appliance efficiencies to match your situation.
If your house is neither sealed nor insulated, I'd ask the landlord to address those issues first. Doing so will allow a smaller furnace and potentially smaller ducts to be installed, which will save him a few bucks and perhaps mangle the interior sightlines a bit less.
@ February 11, 2014 10:38 AM in Does a drop-ceiling in the basement help with heating the main floor?Electric, hot water, or steam? If either of the latter, what kind of boiler and what fuel?
@ February 11, 2014 10:35 AM in Balancing ValvesAre useful no matter what the piping topology. In a properly configured reverse return design (which includes properly sized emitters) they will need less adjustment, and can usually be specified as simple balancing valves rather than the (more expensive and complex) pressure compensated type.
@ February 11, 2014 10:07 AM in Tn2 vs Tn4TN4 is an older bus, but supports both controller to controller interconnection as well as controller to thermostat. It requires 4 wires.
TN2 is new, and (so far) is only used for controller to thermostat connections. It requires only 2 wires. This can sometimes save a lot of work on retrofits.
@ February 10, 2014 12:11 PM in DHW Indirect Air Eliminationcome with an air vent. Both diagrams and instructions cover installation.