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Re: Oil Burner Wont Work Without Return Line
The burner has to be reconfigured for one line operation — best left to someone who really knows how to do that.
Re: Correct Venting for faster Radiator heat up??
You may not want to use a C on the attic radiator. The radiator takeoff and riser, at 3/4", are below the 1" minimum size for one pipe steam. If you vent that quickly, the steam and condensate may interfere with each other, causing gurgling and spitting from the air vent. Slower venting may be needed to prevent this.
I believe the attic radiator is not heating because of water trapped in the sagging pipe, not because of a venting issue.
Re: Pneumatic zone valve controlling heated water into coil
Sounds like a normally open valve and it is stuck closed. Or it is air bound.
Re: Heat load calculation for replacement boiler - double-check my work?
Did you subtract out your other propane use? Won't change the answers much but get you more accurate numbers.
Quick look at the calcs, it looks fine. Most people miss the fact that if you actually needed a 150k boiler, you would not be able to afford the heating bill.
The 1.4 sizing factor is actually the MAX recommened oversizing but that is for furnace and heat pumps. For a boiler especially with decent turndown, you can oversize as long as you are not micro zoned. The turndown on the Triangle tube is not that great, the 5.5:1 on the 110k means min modulations of about 20k which is pretty much heat load at design temp. I would try to find something with a 10:1 turndown.
Heck, if that propane use included DWH/dryer/stove, so your heat loss is even less, you can tap your water tank with a plate HX or Taco X block and easily heat your place.
Re: Electrical - heating question
A dedicated circuit? Yes.
Cord and plug? Yes. Many mod/cons come with a cord.
Other ancillary components? Yes.
Re: Pneumatic zone valve controlling heated water into coil
heating valves should fail Open with no air.
Re: Pneumatic zone valve controlling heated water into coil
Since it looks like it is leaking the valve should be repaired either way.
Re: dunkirk gas boiler issues
Even if it is a faulty inducer, is it just a faulty inducer, or was there another cause for the fault? The only way to know for sure is with safety checks and a combustion test. Almost anyone could physically replace it. It's quite easy. But it doesn’t stop there. There's more to it than 4 nuts and a hose clamp.