Best Of
Re: Sizing a New Steam Boiler
The 33% is built into that spec already and 33% is too much anyway.
The 288 is what you want.
ChrisJ
Re: Viessmann cast iron boiler replacement.
The boilers last forever. The controls don’t.
I’d be tempted to install a Vitocrossal CU3A. Old school, high water volume.
Re: Swapping out an older wall mounted utility faucet
Chicago Faucet is my go-to for utility faucets. Worth the cake, as they say.
Re: Updating mechanicals in 100+ year old house
Hi @sgb9809 , It does sound like insulation is out for now. Still, the low hanging fruit is air leakage. Using a blower door is best, but one can just use a box fan also. Once you have some slight air pressure, you can use a relatively inexpensive IR camera, like Flir One, and/or incense sticks to track down leaks. Often, taking care of air leaks can do as much as adding insulation to add comfort and reduce the energy bill.
Yours, Larry
Re: Troubleshooting Rheem water heater with Honeywell control valve
Can you post a pic of the valve? Piot is on, but no main burner?
HVACNUT
Re: Hydrostat 3250
Tankless Coil DHW MUST always have a mixing valve. It is just something the installer does not always do because they don't understand how a tankless coil works. There is always that possibility the boiler water WILL get to 200°F during the course of a normal central heating cycle. If no hot water is being used durning that cycle, the DHW inside that coil will get close to that 200°. If that water is then allowed to exit a tap without going thru a mixing valve, then the person that is near that tap will get some room temperature water for a few seconds until that 200° water reaches the tap. The elderly, or a small child that does not have the necessary reaction time will surly get burned by 200° tap water.
So to answer your question @Big Ed_4, YES, you can increase the low limit to 160° and the high limit to 180° or higher in order to get more DHW capacity. My default settings on a tankless triple aquastat is 160° LO. 180° HI. 10 DIF.
If you ever find an operating tankless coil on a boiler that is also used for central heating, I would tell the customer that it is unsafe to operate the boiler the way it is piped and they need to have a plumber install a mixing valve. if they indicate that they are not going to do that, I turn off the switch and leave a note on the work order "Scalding Hazard. Left Switch Off. Operate at your own risk"
And tell them to turn the switch on at their own risk after you leave.
Re: Swapping out an older wall mounted utility faucet
I mean the gaskets in the faucet, the bib washers and the stem packing or o-rings and the packing or o-ring for the spout.
if you do replace it i would go with a compression faucet, it will be a lot easier to find a bib washer in 20 years when it leaks than a proprietary cartridge.
mattmia2
Re: Sizing radiators in a 2200 sq ft colonial/victorian
There is no need for the differential on the pressuretrol to be that much — dial that back to 1, and then set the cutin at 0.5. Much better range. However — there is no guarantee that either the pressuretrol or the gauge is all that accurate. Might get a nice low pressure (0 to 3 psi) gauge to verify what is happening.
Piping doesn't look that bad.
