Best Of
Re: How to set valve on expansion-tank loop
I can't wrap my head around the piping of the mixing valve right near the boiler.
Re: How to pitch this beast radiator
I would do as @delcrossv recommended.
Take the vent off the radiator. Turn the vent on the radiator above it upside down and make sure the valve on the lower radiator is open.
You want to find out if the radiator will heat. Once you find out it will actually heat then you will be able to troubleshoot further. Be ready to screw the vent back on before steam comes out.
If it does not heat, then I would investigate the radiator valve.
Re: Lennox Heat Pump "Mystery" issue.
2 "contractors" are baffled by this and nobody has checked for codes yet?
Re: Two pipe vapor system with vapor stat: to cycle or not to cycle?
No, boiler too big pressuretrol short cycles the boiler.(at least that's how it's supposed to work)
Re: How to pitch this beast radiator
The only way a radiator can go bad is to leak. It's an empty vessel that allows steam in with a vent to let air out. The problem is not the radiator, especially if you can feel air coming out with the vent removed.
How big are the vents on the other radiators? They may need slowed down. One can only speed up so much before the venting, potentially, exceeds the steam supply. At that point control becomes very difficult. Given that you mentioned having a D vent on that one (huge BTW), I'm curious about the other radiators.
KC_Jones
Re: 2 pipe with traps on rads. Where to set metering valve?
The work fine on a conventional two pipe system. Just adjust the metering section to suit the system working pressure, that's all.
Re: Paint on inside of fireplace box
Find a restoration company that sand blasts with walnut shell to remove the paint then get a mason to install a damper and inspect the chimney. Changing the size of the firebox by relining with firebrick could change the drafting up the chimney .
gunn308
Re: How to pitch this beast radiator
Make sure that the valve is fully open. If you still cannot get heat I would take the top of the valve off to make sure that there is no restriction in it. These valves will sometimes break and the parts inside will restrict the opening.
Re: 2 pipe with traps on rads. Where to set metering valve?
I am going to chime in here late regarding the TRVs. We have a 2 pipe vapor system and I have been thinking about the same thing as OP, installing Adjustable Orifice valves from Mepco (currently have Steam Radiator Inlet Orifice Plates only since all but one of the original adjustable valves have been replaced sometime over the last 100 years )
I was considering TRVs as a more comfortable solution but started thinking about it.
Using a TRV with a vapor system with our water "traps" could allow too much steam into the radiator.
So fixed orifice plates set to 80% of the radiator capacity must be installed along with TRVs to avoid steam passing thru the radiator.
