Joined on February 27, 2010
Last Post on July 27, 2014
@ June 25, 2014 5:56 PM in One Pipe Steam - What Is This?How high is the normal water line in that picture? It was probably acting as a steam trap to keep steam out of the returns.
@ June 23, 2014 10:39 PM in Need to replace big old galvanized pipe with pexPoint being...if you guess, you'll likely guess wrong. Proper calculations and design prevent a lot of wasted time/money/energy.
@ June 23, 2014 10:19 PM in Need help rating these radiators.1. Upgrade the steam system
2. Save 30-50% on the fuel bill
3. Put that $400K towards something useful like feeding the hungry, or building shelter for the homeless.
@ June 23, 2014 9:32 PM in Need to replace big old galvanized pipe with pexHere's the one answer that everybody hates hearing...It depends.
It depends on the heat loss of each room, and the ratings of the heat emitters. With those numbers, you'll need to calculate the required flow to each run. And then, after that, you'll be able to determine pipe size.
@ June 23, 2014 4:02 PM in SalesA mod/con with a firetube HX is the ideal boiler for this application. You'll most likely be able to avoid primary/secondary piping and really simplify the entire system. Install it like a normal boiler, pumping away, and you'll be fine.
@ June 23, 2014 4:00 PM in Need help rating these radiators.Why not keep the steam and add A/C separately?
@ June 23, 2014 8:49 AM in STEAM BOILER W/ INDIRECT help !!!!I would be cautious about adding any BTUH's to the steam boiler. You'd be surprised at just how effective an indirect tank will be, even at lower input BTUH's.
At 14 showers, I would look for a First Hour Rating of 240. If your total BTUH's are close to 200K, you'll be fine not adding any extra.
@ June 19, 2014 9:01 PM in Adding a Radiator to an existing one pipe steam systemYou should consult a steam pro. Where are you located? We may know somebody nearby.
@ June 19, 2014 5:01 PM in Oil to Gas conversionA lot of bad information here.
I take care of some boilers that are 90+ years old and still operating. Is that long enough?
Not every chimney requires a metal liner. You DO NEED a qualified professional to inspect the chimney. You can't file permits without that certificate.
@ June 11, 2014 7:49 PM in Mega Steam conversionSince this boiler has more back pressure in the chamber, you may need to go with one orifice size bigger than expected. The air adjustment will be determined by your combustion numbers. That's all I've found to be special about converting these. We converted one last month with good results. I don't see what the fuss is all about coming from Burnham.
@ June 11, 2014 12:45 PM in PresidentWhew, that's cutting it close. A drop header is essential here. I would use an oversized header and maybe even oversized boiler risers to accommodate the extra water in the piping. The drop header can be any height above the water line, but I wouldn't go any less than 10".
@ June 11, 2014 12:39 PM in Radiator identification needed to get EDR.That looks like a SunRad or something similar behind a cabinet. It's probably close to 50 EDR. If you can count the sections, multiply that number by 2.25 for the rating. Any chance of getting the cover off for a picture?
@ June 11, 2014 6:19 AM in Adding on to existing Monoflo systemI would imagine that the distance of piping will lead to the greatest restriction. I would add a small circulator to the supply line to overcome that friction. You just need to calculate the flow vs. head for the circulator.
@ June 10, 2014 2:03 PM in Lochinvar ignition troubleVerify the proper spark gap. Even if it sparks, the airflow may blow the arc off of the ignitor. You can also adjust the venturi ratio but will need an analyzer to verify the results.
Is this direct vent or Category IV?
@ June 10, 2014 2:00 PM in Home OwnerWe use PEERLESS a lot. They have 3" boiler tappings and decent efficiency ratings. They also offer BTUH sizes down to 88K, which is close to the smallest size available. Never had any problems with them as long as the maintenance is done properly.
@ June 10, 2014 7:33 AM in Any commentsI would have gone to a 5" header. My charts show 3" as good for up to 140,000 BTUH. For the 5007B DOE output, a 3" header has the steam moving at over 56 ft/sec. A 5" header, at 20 ft/sec. My charts assume a 1PSI maximum cut-out.
Might not make a difference, but something to keep in mind for the next one.
@ June 10, 2014 6:38 AM in steam in the summer!You should also set the tank temperature above at 140F to kill off any bacteria and the chance of Legionella. 115F is a breeding ground for harmful water pests.
@ June 10, 2014 6:15 AM in Two Pipe Steam System with Air VentsThe return piping definitely forms a water-seal trap. The air vents on the radiators will now act as the only means of air release from the radiators, so it's critical that they are sized and working properly. This piping arrangement should not be a problem as long as the water seal is low enough to hold bback the pressure from the steam main. Definitely install a Vaporstat on this job to make sure that this will be guaranteed.
@ June 7, 2014 8:58 AM in Boiler replaced - Boiler trap removedA Boiler Return Trap and a F&T Trap are not the same thing! Right now, there is no way for air to leave the system/radiators. Get rid of that F&T trap, and install a heav dose of main vents. Then fix that horrible mess of piping, getting rid of the copper at the same time.
@ June 6, 2014 6:06 AM in Gas forr a Vaccum Vapor SystemWe could certainly work on the system but not do any work involving permits. Best bet is to find someone local.
@ May 31, 2014 12:21 PM in Rinnai boiler corroded in less than two yearsOne thing that catches my eye is that the drain line is not made with a hard connection. I wonder if the condensate is vaporizing or being sucked into the cabinet by the blower. The acid in the condensate may be causing this corrosion.
That's just an observation, and I have no proof or experience to back it up.