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Re: Azimuth, Solar Elevation, And Solar Irradiance
Hi, Being more of a hands-on type, I'd be tempted to get or build a collector that fits what you're looking for and set it up. Data-log temperatures and you'll know with more certainty than any calculation can give you, just how well it performs. Feed it with warmer and warmer water to see how performance drops off. You'll be able to graph it, and get a clear idea of what sort of temps you can expect from a system using that collector. It certainly is some work to make happen, but you'll get results you can trust.
Yours, Larry
Re: Cost to clean a heat exchanger?
a motorcycle mirror is good forlooking up into the boiler, the convex shape gives you a wide view
hot_rod
Re: Cost to clean a heat exchanger?
@HVACNUT The company doing the fall inspection is not the company that installed the boiler. My thought was to call the original installer and ask them to do a combustion test and Im not even going to mention the results of the first test and see what the 2nd test gets. That will inform my decision to move forward.
Evan0307
Re: Cost to clean a heat exchanger?
I would get it checked by another tech only because of the CO readings. It's probably BS, but better to be sure.
Drilling a hole in the flue pipe is NOT where the combustion analyzer probe goes on your particular boiler. The box that the flue connects to at the back of the boiler is open at the bottom. The probe needs to go up through that box to reach the undiluted flue gasses directly coming from the boiler block.
You mentioned this was part of your annual fall inspection. Have you been using the same company? Is it the same company that installed the boiler 3 years ago? Ask for a senior tech, and a copy of the combustion report. At no charge of course.
HVACNUT
Re: Gas boiler heating house without call for heat
Thanks, everyone. I'll keep the boiler shut down during non-heating season.
Re: Flash light and batteries
For AA and AAA batteries that don't ever leak, have a 20+ year shelf life and around 20% higher maH capacity than alkalines, I spend the extra cash for Energizer Ultimate Lithium. They're particularly good in applications that place higher current demand on them.
Re: Gas boiler heating house without call for heat
Yes, with the flow control manually opened the hot water will circulate by gravity. Closing the valve should solve this problem.
You shouldn't need warm start as you have a separate water heater.
Re: Gas boiler heating house without call for heat
Circulation will occur withou pump running if flow control valve is open.
Since you don’t use this boiler for domestic hot water, I recommend shutting g boiler off during non-heating season. No reason to keep heat all that water and dumping heat into the house during summer cooling season.
PC7060
Re: Gas boiler heating house without call for heat
From the other thread;
" We have a three story duplex right outside Philadelphia thats heated by a gas boiler and convectors. Separate gas water heater and gas boiler (Williamson GWA 140N-S, 140K BTU) "
Why is it warm start ?
Also…
109A_5
Re: Azimuth, Solar Elevation, And Solar Irradiance
you need a solar simulation software to make it quick and easy to do those calculations and comparisons.
RET Screen out if Canada had a powerful, free program with solar calcs
Possibly some freebie at the NREL site also
hot_rod