Best Of
Re: HTP ELU system sensor install
The system sensor is for multiple boilers in a cascade system.
As mentioned, you need to adjust the ODR curve.
Ironman
Re: potential for gas leak in enclosed area
Gas piping is pressure tested so all those inaccessible joints are tested at 5x the max. working pressure x 10 min. per IFGC/NFGC.
Hogwash about the spontaneous ignition. If that was a real problem, believe me the authorities would be ripping it out of buildings.
Go back to sleep and stop fretting over things that go bump in the night.
Re: Main vents near boiler
Those things are ancient anyway. A couple of new Gorton vents are faster and will last another 60 years. A good investment and regular service.
Re: Silly Question
Hospitals, Universities, PowerPoint, manufacturing & food production. Mad Dog
Re: Bathroom Radiator - The Wrong Way
whoever moved it didn't want to swap the tapings for the vent and for the valve
mattmia2
Re: Positive over fire draft help needed
Installed in 2019. Was it manufactured in 2019 or 2018?
"Combustion analysis is always perfect." Can we see, or is it a secret?
You ran a temp flue out a door an up the side of the structure to 3 ft above the peak within 10 ft? That must've been a party. While you were up on the roof, did you happen to peer down the chimney with a light?
Did you have the furnace running (burner and blower) in the driveway? Did you put it up on blocks first?
HVACNUT
Re: Should a properly sized steam boiler run flat out at design temp?
I wonder if there is an actual industry standard for heating equipment duty cycle running at design day temperatures.
With my small residential system, at more than 5 degrees below design day temperature, my boiler runs at about 65 to 70 % duty cycle. My boiler (300 Sq. Ft.) is undersized for my 347 EDR. I bet the house did not need 347 EDR, but that's how they did things almost 100 years ago. 100 years ago, did they even use design day temperatures as a reference ? BTW I have no idea what the size of the original boiler was.
109A_5
Re: Bosch vs. Viessmann Condensing Boiler for old home
No contest..Viessman...Laars are very good too above the rest out there. Mad Dog
Re: Bosch vs. Viessmann Condensing Boiler for old home
@GW makes one exceedingly good point: whichever boiler you might buy, it is the installer that makes the difference in the install and subsequent service — which all of these things require. You need to be quite certain that the installer you select likes and is familiar with the boiler you select — or that the boiler you select comes with an installer who is thoroughly familiar with it and will be around to service it. Not every one is as comfortable or capable with various makes as Gary is!
You also need to be sure that whoever it is has actually evaluated the heat loss of the house and not just casually selected a boiler to replace the one that was there.
Now. You mention single pane windows. One thing which can really make a difference, both in terms of energy usage and comfort, is to install storm windows. I'm a bit of a nut on this, I admit, but I strongly advocate removable storm windows which install from the inside of the house. There are several people who make these; I happen to like these people:
Interior Storm Windows For Older Homes, Churches & Buildings
but there are others. Don't be misled by folks peddling replacement windows. Unless you get the very top of the line replacements, they won't be any better than the storms — and won't last anywhere near as long.
