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Re: Gas boiler heating house without call for heat
Thanks, Ed! I’ll go down and post some photos right now. I can make a video too and upload it to my YouTube and post the link
Re: Gas boiler heating house without call for heat
@FrankMaraschino, So, I just looked at the wiring diagram for the Williamson GWA series 1
and the GWA series 2 boilers
There is no provision for maintaining any temperature, 140° or 180° or any other temperature, in either diagram. I think it is a good thing that you found your home like a sauna and that caused you to come here for some advise. You would not have found out that you are wasting fuel by maintaining 180° in the heating season. During the fringe seasons when the call for heat may only last a few minutes, your burner may not even allow the water temperature to reach 150° before being satisfied.
Every minute your boiler is operating at 180° without a call for heat, you are venting lots of heat up the chimney… even with a vent damper closed while the burner is off by the high limit, because that damper does not have a 100% closure. there is always some leakage past the closed damper, and the damper is open more that it is closed whet the weather outside is very cold.
Can you find out why the boiler is maintaining 180° all the time? If you open up the control compartment and post some pictures of the wires inside there, like this:
I can usually see what was done incorrectly and maybe even get you back to a more efficient cold start design as the manufacturer intended. Please try to make the photo as clear as possible by not moving the camera when taking still photos. A video can also help however, there is more involved to post a video and not everyone has the ability to do so.
Also, tank more than one angle so I can see behind stuff that may be blocked in the first pic you take
I understand that wiring diagram can be intimidating to a layman. (and some of the professionals too) But take my word for it, you can fix this with just a minor adjustment and your utility bill will drop by 15% or more.
Yours Truly,
Mr.ED
Re: Gas boiler heating house without call for heat
i burned myself on that water heater vent just looking at that picture
mattmia2
Re: Gas boiler heating house without call for heat
Your fuel bills may go down (even during the heating season) if the warm start is disabled.
IMO Extrol wants the vertical position so air is not trapped on the water side of the diaphragm. Air on the water side of the diaphragm against the steel housing may lead to premature failure and property damage.
109A_5
Re: Gas boiler heating house without call for heat
When there's time and you have someone who knows what they're doing, the thermostat/pump/boiler can be wired in series so that the boiler will only come on when the thermostat calls for heat. As it is currently wired, only the pump responds to the thermostat.
Re: Azimuth, Solar Elevation, And Solar Irradiance
Interesting query. Does anything in the engineering toolbox help with that? Here's the link:
Just type in Solar Radiation in the search bar.
Re: Azimuth, Solar Elevation, And Solar Irradiance
What you need is the angle between the perpendicular to the panel and the sun. Given that angle — which, of course, changes with the time of day and the season — then the effective area of the panel is equal the the gross area time the cosine of that angle (not the cosine squared). Using that effective area you can calculate the gross solar radiation.
A useful reference for the math for the angle to the sun is here;
zenith-angle-calculation-Guoyuan-Li.pdf
Now.. That is not.. Repeat NOT related the the efficiency of a solar collector. The efficiency of the collector is, simply, the usable power output from the collecter divided by the net effective area of the panel and the instantaneous solar power — which, of course, varies with atmospheric condition. This efficiency varies with the design of the collector, and may — or may not — also be influenced by the angle between the perpendicular and the direction to the sun. This may be closely related to the cosine of that angle, in the case of collectors with flat glass surfaces or some (but not all) types of photovoltaic arrays. Or it may not…
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