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Re: Is a high efficiency boiler worth it?
And we barely talk about the difference in environmental impact.
JStar
4
Re: Is a high efficiency boiler worth it?
What type material do you prefer to use going up an existing chimney...For high efficiently?I use centrotherm polypropylene chimney liners. Then go in fairly easily less then an hour in most cases. The kit makes the chimney a air intake as well.
Re: Is a high efficiency boiler worth it?
All the above comments are correct. My experience with a Knight 80 that is about 7 or 8 years old is that savings are about 30% from the old weil mclain 133,000 btu unit. However, because of the way modern high efficiency boilers operate, the comfort in my home is noticeably better. We have a 1960's house with about the same amount of baseboard as you and about 3000 sq. ft. of space. Temp swings are non-existent and it is very, very quiet. As far as maintenance, I do my own annual cleaning and it takes a few hours. The newer wall mount Knights may require less frequent attention, but others may have opinions about that. I have not had to replace any parts since the install. There are a couple of gaskets that get replaced during normal cleaning but that's been it.
Re: Is a high efficiency boiler worth it?
The maintenance on a high eff. boiler is identical to every other boiler. Sure, some of the parts are more expensive, but 80% systems have expensive parts, too.
Not only do you save on thermal efficiency, but you can look at another 20-30% savings from burner modulation.
Not only do you save on thermal efficiency, but you can look at another 20-30% savings from burner modulation.
JStar
5
Re: Is a high efficiency boiler worth it?
Why would it have to work harder? That makes absolutely no sense to anybody who understands heating equipment. We only install high-efficiency boilers and will never go back.
JStar
6
Re: Lack of variety in residential ECM circulators is very poor
bmwpowere36m3 et all... I've been watching this post with great interest (no kidding).
Being this is a public forum we can't say what we're working on (as much as I want to) but if you think the VR 1816 and VT 2218 are our last entries into the ECM world...
I can assure all of you there are a lot of us at Taco that monitor "The Wall". Keep telling us what you need - we're listening.
Being this is a public forum we can't say what we're working on (as much as I want to) but if you think the VR 1816 and VT 2218 are our last entries into the ECM world...
I can assure all of you there are a lot of us at Taco that monitor "The Wall". Keep telling us what you need - we're listening.
Update on Judy McElwain
First of all thank you for all the prayer, it certainly worked. She had a nasty bacterial stomach and intestine infection. She is on anti-biotics and has been sent to a nursing home for some rehab as she is very weak. Thanks again for caring she is on her way to recovery.
Re: He got the Pumping Away right,
You guys just don't understand what the original artist was trying to convey. I think the tree of life on the middle and it's fight to stay safe from dragon on the left and the serpents on the right is really beautiful. The copper branches are trying to protect the circulators from being replaced.
How could you destroy a fine work of art and replace it with something so, well, lineal?
Oh I'm sorry, I just re read the post and realized the customer wanted to heat a house. The "after" picture should do a much better job of that. Never mind.
How could you destroy a fine work of art and replace it with something so, well, lineal?
Oh I'm sorry, I just re read the post and realized the customer wanted to heat a house. The "after" picture should do a much better job of that. Never mind.
Zman
6
82 years old and back in business
I posted about this a while ago and just wanted to update the few that were interested.
My 1933 fridge is finally complete and back in use as of July 4th 2015.
Current cycle times are approximately 6 minutes on 13 minutes off with a cabinet temp of around 31F. Power consumption is 170W for a few seconds dropping down to around 168W which then continues to slow drop until the machine shuts off at around 153W. This is including the 12W crank case heater's consumption. Power factor is around 0.6. The 12W crank case heater is required because the compressor dome is the highside and the refrigerant likes to condense and lay under the oil.
Refrigerant is methyl formate. Oil is around 2 quarts of highly refined "Nujol" mineral oil according to the service manual. The oil floats on top of the refrigerant and is removed from the evaporator via a skimmer.
When running hard such as freezing ice the condenser runs in the high 90s and the top of the compressor around 104F which gives a high side pressure of around 3 PSI. The evaporator runs between 8F and 14F which gives a lowside pressure of between 25" and 26" HG although it has no issue pulling it below 27" HG if it runs long enough.
I had to convert this from a highside float to a capillary tube as the valve seat was badly damaged. I'm told, with a float valve the cycle times are typically slightly better than I'm seeing but I guess it is what it is.
82 years old and still pumping like the day it was made. Isn't it amazing what can be made if a company engineers it to last?
This has a rotary compressor that according to GE was "machined to a few ten-thousandths of an inch". So far, I've yet to see another and I expect it's due to the tolerances required for it to work. It has a centrifugal type unloader as well as some how supplies the bearings with oil under pressure. There's a fan on top which I assume is to help cool the windings.
Here are two short videos of a compressor someone removed from a unit because it was seized. After removing it he was able to free it up by hand.
Compressor running exposed
https://youtu.be/bfkNLHy9nkw
Compressor turned by hand to show how it pumps
https://youtu.be/gn0u7dFBCTk
@Techman
My 1933 fridge is finally complete and back in use as of July 4th 2015.
Current cycle times are approximately 6 minutes on 13 minutes off with a cabinet temp of around 31F. Power consumption is 170W for a few seconds dropping down to around 168W which then continues to slow drop until the machine shuts off at around 153W. This is including the 12W crank case heater's consumption. Power factor is around 0.6. The 12W crank case heater is required because the compressor dome is the highside and the refrigerant likes to condense and lay under the oil.
Refrigerant is methyl formate. Oil is around 2 quarts of highly refined "Nujol" mineral oil according to the service manual. The oil floats on top of the refrigerant and is removed from the evaporator via a skimmer.
When running hard such as freezing ice the condenser runs in the high 90s and the top of the compressor around 104F which gives a high side pressure of around 3 PSI. The evaporator runs between 8F and 14F which gives a lowside pressure of between 25" and 26" HG although it has no issue pulling it below 27" HG if it runs long enough.
I had to convert this from a highside float to a capillary tube as the valve seat was badly damaged. I'm told, with a float valve the cycle times are typically slightly better than I'm seeing but I guess it is what it is.
82 years old and still pumping like the day it was made. Isn't it amazing what can be made if a company engineers it to last?
This has a rotary compressor that according to GE was "machined to a few ten-thousandths of an inch". So far, I've yet to see another and I expect it's due to the tolerances required for it to work. It has a centrifugal type unloader as well as some how supplies the bearings with oil under pressure. There's a fan on top which I assume is to help cool the windings.
Here are two short videos of a compressor someone removed from a unit because it was seized. After removing it he was able to free it up by hand.
Compressor running exposed
https://youtu.be/bfkNLHy9nkwCompressor turned by hand to show how it pumps
https://youtu.be/gn0u7dFBCTk@Techman
ChrisJ
6
Re: What happened to Icesailor
He had a cantankerous style, that would grow on you once you understood his MO, I rather enjoyed it.
He is a wealth of knowledge, and that all knowingness is slipping away from this industry.
I hope he returns.
He is a wealth of knowledge, and that all knowingness is slipping away from this industry.
I hope he returns.
hot_rod
5