Best Of
Re: AO smith ECC code
This long thread points out what i posted a couple of years ago:
For the most part these units are not repairable. They are treated like a throw away appliance.
The MFGs put these out in the field without proper testing and they know they will fail and build that into the price. They don't care.
@iamknotdot just run it on electric.
With two people and your water uses is low a 40 or 50 gallon electric is more than enough
Re: New, unused Peerless 63-04 Brooklyn/Queens area
I see that you/the boiler job is in Queens/ Brooklyn area. Contact me if you are leery about reassembling it yourself but would still like to use it. There isn't a Peerless or any manufacturer (oil or gas)for that matter that we haven't had to split and reassemble for NYC installations at some point .
jimmac
Re: Coal to Gas Burner Conversion?
Regarding coal conversions, I did not do many of them in my rookie years, but I did remove old oil burners from coal conversions in order to build a new combustion chamber out of fire brick and install new oil burners like the Carlin CRD100 in the 1970s.
The first step is to remove the grates that hold the solid fuel (coal/wood) which was already done when I "modernized" the boilers I worked on. Next thing is to build the combustion chamber floor with insulated fire brick. After that you would build the rear wall and side walls as you might build a wall by staggering the bricks so all the vertical lines were not lined up. At the corner you would also stagger the bricks until you were at the front of the chamber where you would use a piece of 4" vent pipe to leave an opening for the burner's fire tube. Once that was in place you would finish the chamber walls so the chamber was just above the lowest part of the water jacket of the boiler. That part of the boiler was called the mud legs.
With the chamber wall slightly above the mud legs of the boiler you then take vermiculite to backfill the hollow space between the chamber and the boiler base. This is where you find that sealing up the front clean out doors and ash pit openings are important. the vermiculite would insulate the fire chamber from the exterior walls of the boiler base. It would also add a little support for the chamber so it would not fall apart after the fire cured the mortar between the fire bricks. A well built chamber was like an archway where the pressure from the backfill would hold the bricks from collapsing out and wedging the bricks together would keep the chamber from collapsing inward. Some mechanics were better at this than others. Once the fire chamber was completed and the backfill was pressed into place, you would cap off the chamber's backfill insulation with some high temperature retort cement. That would cover the loose insulation at the top of the backfill with a seal between the top of the fire brick and the side wall of the boiler's wet jacket, high enough above the mud leg to protect the mud legs from the intense heat of the burner flame.
Here is a video of how one might build a round combustion chamber by hand
With today's precast ceramic fiber combustion chamber kits, you can cut the time from 2 days to 2 hours to build a combustion chamber in an old coal conversion.
Re: Vent placement in home 2-pipe steam heat system
Looks like the radiator in the diagram was installed in the basement- maybe an indirect rad that fed ducts going to main living areas?
Re: Makeup air inlet
Is this the thing about various pieces of process equipment adding humidity and heat to the air in your shop?
mattmia2
Re: Electric Steam Boiler
Back when, Princeton University built a new library. Modern lighting, climate control, the works. During a tour, one of the trustees complained that 'It doesn't smell like a library.' The librarian leading the tour answered 'That, sir, is the smell of books decaying.'
It sounds like the visible steam is a result of the mineral deposits that come from heating and boiling impure water. These same mineral deposits build up and destroy the boiler. Your customer is complaining that they don't see signs of the boiler destroying itself.
winnie
Re: Trane Air Handler Fan Constantly Running
The Quick fix is to remove the Red wire from the Coil on the relay. just cap that off.
If the PCB time delay was in place, then that would use the 24 VAC Red wire for constant power for the PCB. Without the PCB in place there is nothing to interrupt the common side for the relay coil from completing the circuit. Since that PCB part of the R8222 relay is no longer available, someone just removed it to get the system operating temporarily. Probably 10 years ago temporarily This system without the 24 VAC red wire to the R8222 relay ust means there is no time delay on start or on finish for the fan to use all the energy stored in the refrigerant coil when the thermostat is satisfied. Probably time to look at new equipment a piece at a time over the next few years.
Re: What is your longest running Combi Boiler without ever needing Service - excluding maintenance.
GB 142 isn't a combi as far as I know. Nut then I could becerong
Re: can I raise the wet return from floor?
OK. Step back a square or two here.
We have a critical question which, I think, has not been clearly answered.
Do we have a wet return serving only drips from a steam main? Such as might be found on a one pipe system?
Do we have a "dre return" which is, in fact, a continuation of a steam main back to a boiler?
Or do we have a true dry return up there somewhere, which would be found on a two pipe system?
The rules for connecting them to each other, venting them, and the elevations they run at aren't made up old timers rules. They are basic physics, and getting it wrong is one of the more common reasons why systems don't work well.
Re: New refrigerants Epa 608
What's the point?
When you've got equipment being engineered / manufactured poorly that dumps how many thousands of pounds? of refrigerant into the atmosphere per year, why does it matter? I've got a feeling it's thousands of pounds per month……….but I really don't know.
Now, some will argue the equipment leaks because it's made so thin to meet efficiency requirements. If that's the case, then those requirements are wrong and need to change.
/Rant.
ChrisJ