| Location | Pittsburgh, PA, USA |
| twitter.com/dave_andersen | |
| cohost | cohost.org/dga |
| github | github.com/dave-andersen |
Today the NIH announced the launch of http://makemytestcount.org, the first national website for Americans to self-report at-home COVID-19 test results. These data will be shared with local public health systems and researchers.
@smolix This is the house hydronic heating boiler, not a hot water heater. Radiators.
(When we have to replace the HW heater I'm probably going to use this existing boiler to provide DHW as well. It will likely require a storage tank but then I have only one boiler and a very efficient one at that.)
@kisonecat Nope - it has a little embedded computer and you just scroll through an LCD. Poor image - it's hard to photograph with a digital camera.
The firing rate is calculated based on a curve determined by the outdoor temp, a min supply temp, and a max.
(For mine, when outdoor temp = -20, supply temp = 148F. When outdoor temp = 65F, supply temp = 86F. And it ramps between.)
Due to a change in my home heating needs, I have spent the last week trying to optimize my hot water radiator system. If there's one thing to know if you have a modern condensing boiler, it's this graph: efficiency is higher at lower return water temps + running at low % of max.
My boiler was poorly configured and ran way too hot, leading to frequent on/off cycles.
Now it runs for hours at 20% of max and the house is incredibly uniform in temp with far less gas used. Yay!
Twitter was special. But it's time to leave
https://www.pwnallthethings.com/p/twitter-was-special-but-its-time
Dr. Stephanie
Pwnallthethings