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120 year old steam/hot water combination
In live in an historic 120+ year old house with steam heat. Some years ago the previous owners converted the ground floor heating to hot water, but left the upstairs single pipe steam. There is only one boiler, with a recirculating pump for the hot water attached. The system seems to work fine, but i was wondering if I should upgrade to a newer, more efficient boiler, and if I should make other changes.
The boiler is a Utica Low Pressure Gas Boiler (PEG 300AS) with a 300K BTU rating. I would appreciate any opinions.
Thanks.
The boiler is a Utica Low Pressure Gas Boiler (PEG 300AS) with a 300K BTU rating. I would appreciate any opinions.
Thanks.
johng_2
0
Cracked Boiler - Warranty Claim?
Hi Heating Help!
I just bought my first home this past June. It has an oil fired Smith Series 8 steam boiler that is used for heat and DHW. Yesterday I noticed a sudden drop in the water level. I slowly added water and it all leaked out on the floor so I shut it down and pulled off the jacket and it looks like the flange between the boiler and tankless coil has cracked.
http://imgur.com/HEp6h98
http://imgur.com/CwRymJT
The boiler is still under warranty for the next 3 months. I contacted Smith and they told me this is not covered due to the corrosion.
Is this worth appealing?
Thanks!
I just bought my first home this past June. It has an oil fired Smith Series 8 steam boiler that is used for heat and DHW. Yesterday I noticed a sudden drop in the water level. I slowly added water and it all leaked out on the floor so I shut it down and pulled off the jacket and it looks like the flange between the boiler and tankless coil has cracked.
http://imgur.com/HEp6h98
http://imgur.com/CwRymJT
The boiler is still under warranty for the next 3 months. I contacted Smith and they told me this is not covered due to the corrosion.
Is this worth appealing?
Thanks!
Re: Theory time.
20 Hg is only 72% of a full vacuum, leaving 38% of the air in the piping.
On a 2 pipe system the steam could push the air out through the return side and you can control the balance with an orifice, but only a single pipe system , the steam is going to be pushing the air into the top of the radiators. That's why the Paul system had them at every radiator.
Job cost was always a concern for these guys and if they could have done it with 1 vacuum line, I think they would have.
On a 2 pipe system the steam could push the air out through the return side and you can control the balance with an orifice, but only a single pipe system , the steam is going to be pushing the air into the top of the radiators. That's why the Paul system had them at every radiator.
Job cost was always a concern for these guys and if they could have done it with 1 vacuum line, I think they would have.
Re: SUPER PRO Solderless Bonding
Have not tried it, would have to have absolutely no other alternative to try it.
Call me old fashioned I guess, soldering is tried and true, press is tired and (so far) true, properly sized no-hubs on Cu waste lines work just fine for me.
Can't imagine trying to explain this to an inspector.
I cannot imagine trusting it on anything as high pressure as a refrigeration line.
Call me old fashioned I guess, soldering is tried and true, press is tired and (so far) true, properly sized no-hubs on Cu waste lines work just fine for me.
Can't imagine trying to explain this to an inspector.
I cannot imagine trusting it on anything as high pressure as a refrigeration line.
delta T
0
Re: Pickup Factor...
@BobC I thought it was Obama who was born in Africa, those guys were born in 'MericA.
Re: Sizing a Two Pipe Steam Boiler
Bob,
Here's an easy way to look at it.
You have 44,400 btu/h worth of radiation.
You are looking at installing a boiler with an output of 93,000 btu/h
Do you think that piping will waste 48,600 btu/h worth of heat? More than the installed radiation?
You're creating steam which needs to be condensed back into water at a certain rate, anything slower will build pressure. Some guys like some pressure, but too much is too much.
Go with the PEG075EID. That's even oversized in my opinion if all of the piping is to be decently insulated.
Vent your radiators reasonably slow and vent all of the mains fast. You'll be fine.
My opinion is the theory that you have to heat all of the piping and radiators at once when cold is false. You first heat your boiler, next the header, then it slowly heats all of the mains and run outs, once that's done, it starts filling the radiators, section, by section. By the time any radiator gets steam, all of the piping should already be heated and only losing what it looses through the insulation, nothing more.
I'm currently running a 10% pickup factor. 120,000 btu/h input, 104,000 btu/h output connected to 392 sqft of radiation (94,080btu/h). I'm not suggesting you should do this, just trying to put it into perspective.
Here's an easy way to look at it.
You have 44,400 btu/h worth of radiation.
You are looking at installing a boiler with an output of 93,000 btu/h
Do you think that piping will waste 48,600 btu/h worth of heat? More than the installed radiation?
You're creating steam which needs to be condensed back into water at a certain rate, anything slower will build pressure. Some guys like some pressure, but too much is too much.
Go with the PEG075EID. That's even oversized in my opinion if all of the piping is to be decently insulated.
Vent your radiators reasonably slow and vent all of the mains fast. You'll be fine.
My opinion is the theory that you have to heat all of the piping and radiators at once when cold is false. You first heat your boiler, next the header, then it slowly heats all of the mains and run outs, once that's done, it starts filling the radiators, section, by section. By the time any radiator gets steam, all of the piping should already be heated and only losing what it looses through the insulation, nothing more.
I'm currently running a 10% pickup factor. 120,000 btu/h input, 104,000 btu/h output connected to 392 sqft of radiation (94,080btu/h). I'm not suggesting you should do this, just trying to put it into perspective.
ChrisJ
1
Re: Getting Ready for Gas in Central CT
My customers are quite happy with my installations. When you take away options sight unseen you are wrong. When this is a job and not a hobby for you let me know.