Joined on January 3, 2009
Last Post on December 9, 2013
@ December 9, 2013 7:52 PM in Single Pipe VacuumI think the problem is the air that doesn't get vented expands to fill the vacuum and the air checks are closed because the system is under vacuum. When the boiler fires back up the air can't vent out because the vents are closed and because the air can't get out the steam doesn't move.
@ December 8, 2013 10:54 AM in advice on boiler/header replacement?Looking at your pictures and diagram, it would seem that header 1 has no swing joints and the take off to riser 2 is between the risers from the boiler. Having no swing joints might have caused the boiler to crack. Without swing joints the expansion of the header will act like a pry bar on the boiler sections. Have the new boiler repiped properly.
@ December 8, 2013 9:53 AM in Burnham Question and Oil - Gas Steam ConversionAccording to "Greening Steam" the suburbs south of Boston are prone to problems with high chlorides in the water. You might want to consider having your water tested.
@ December 8, 2013 9:10 AM in Clarification on steam boiler sizingYes, the pickup is the difference between the Net EDR and the Gross Output of the boiler.
@ December 8, 2013 9:07 AM in Burnham Question and Oil - Gas Steam ConversionThis is caused by the boiler taking on too much feed water. The feed water brings with it oxygen and in some places chlorides. This causes the boiler to rot out at the water line. Make sure all the leaks in your system are fixed. If you have buried returns they could be leaking. Do you have to add water manually or do you have an auto feeder? If you add manually how often were you adding water before the hole developed?
@ December 7, 2013 12:59 PM in Probably a question you are asked alot..Tom have you ever considered attending Dan Holohan's "Dead Men's Steam School"? Give it a try if you're in this area, also purchasing the "The Lost Art of Steam Heat" would be a wise investment in your business if you have customers with steam heat. Also there are other places on this web site for info other than the Wall. Under the Resources tab above check out the Library and under the Systems tab check out steam.
@ December 6, 2013 3:44 PM in finished basement= trapped vent and cold radiator?Looking over your diagram you probably only have 1 main vent. It looks as if you only have 1 main that makes a loop around your basement. There is a vent located at the end of that main.
@ December 1, 2013 5:09 PM in Vent Spitting & Water Hammer in CondoThe radiator should be sized to meet the heat loss for the room on the design day. That very cold day is the day the rad should heat completely across. It sounds as if the rad might be undersized for the heat loss of the room. If the rad heats half way across on a 20 to 30 minute cycle that should be plenty.
@ December 1, 2013 4:08 PM in Vent Spitting & Water Hammer in CondoIf you vent a rad to fast the condensate might not be able to drain out again the steam entering the radiator. Check the hand valve make sure it is all the way open.
@ December 1, 2013 8:01 AM in Do I need a main vent that opens soon after pressuretrol cuts off burner?Why are you cycling on pressure? Does the boiler cycle on pressure every time it runs or only when recovering from a setback? Are you actually cycling on pressure or do you have a cyclegard LWCO? This will cut off the boiler to check the water level.
@ November 27, 2013 7:29 PM in Tankless Coil HeatingMannu go to the top of this page choose Systems, then Hot Water, then Condensate Hot Water Heating. Give the article a read. It explains how it works.
@ November 27, 2013 6:57 PM in interestingI wonder which page of the installation manual shows that piping diagram?. Maybe the manufacturer should put a sticker with the piping diagram right on top of the boiler that way the installer might actually see it. Its obvious very few open the manual.
@ November 27, 2013 6:13 PM in Oil to Gas conversion 2 pipe steam system low heatDave, thanks for correcting my error. This system can be very efficient once all the knuckle heading is corrected.
@ November 27, 2013 4:14 PM in Oil to Gas conversion 2 pipe steam system low heatThe boiler should be rotated 90 degrees and properly repiped. This is a 2 pipe system there should be no vents on the rads. The vent is on top of the return trap. From the picture is looks to be mounted sideways. The wet returns should be cleaned out or replaced. All the pipes in the basement should be insulated. Uninsulated pipes are radiators, this can cause the boiler to be undersized. Where are you located? Hopefully there is a pro nearby that can fix this. Also, all the thermostatic radiator traps should be checked and repaired if bad. Buy the "Lost Art of Steam Heat" to learn how these system work.
@ November 25, 2013 6:25 AM in Gorton Water FountainsLet me get this straight you have vents designed to be placed on rads on your main and there spitting water. The Gorton D has a 1/8" 90 degree shank and the Hoffman 76 has a 1/2" opening and is straight shank. The Gorton most likely can't drain through that small opening on a main.
@ November 23, 2013 12:34 PM in Looking for confirmation on main vent sizing (check my math)It looks a if you may have used the wrong factor to determine the sq. ft. of EDR. The column rads you have I think should be 5sq.ft. per section not 7.5.
@ November 22, 2013 6:31 AM in Steam trapPut the vent in the correct spot. It belongs half way down the last section not mounted at the top of the last section. There should be a boss on the last section that can be drilled and tapped for the vent.
@ November 18, 2013 10:18 PM in Looking for confirmation on main vent sizing (check my math)An IN 7 is rated for 542 sq ft of steam. As for your what you are calling columns are actually sections. Each section contains either columns(each section only connected at bottom) or tubes(each section connected at top and bottom). Count the number of tubes or columns in each section and the number of section and it's height. There is a PDF, I think it is on the Burnham site to help figure EDR for sizing a boiler. You seem to have a collection of different types of rads. Once you know the total EDR it will be easy to determine if the IN 7 is properly sized for you system.
@ November 18, 2013 8:25 PM in Looking for confirmation on main vent sizing (check my math)The conventional wisdom with steam is to set the thermostat to 1 temp and leave it alone.
Chose a temp that you find comfortable and let it be. An oversized boiler can cause whistling vents. What boiler do you have? How many radiators do you have and are you able to calculate how many square feet of EDR they have? Is the thermostat set to 1 cph?
@ November 17, 2013 9:13 AM in Looking for confirmation on main vent sizing (check my math)Are you using a Honeywell thermostat with intelligent recovery? If it is a Honeywell is it set up properly for steam? it should be set to 1 CPH(cycle per hour). This morning might not have been the best to see how things work. It was very warm here in New Jersey. Was it cold where you're located? If it was warm the temp in your house might not have dropped much over night.
@ November 16, 2013 8:57 AM in Looking for confirmation on main vent sizing (check my math)How long does the boiler run coming out of set back? Cold pipes make excessive condensate. Excessive condensate and steam cause water hammer. Excessive condensate from rads and steam cause spitting vents. Long run times recovering from set back can cause the pressure to rise as rad vents start to close. Long run time will cause over heating. How hot does the house actually get when the recovery is done?
@ November 16, 2013 8:22 AM in Looking for confirmation on main vent sizing (check my math)That set back you are using is causing your problems. I've had steam heat for 25 years and I've learned it is best to leave it at one temp setting and leave it alone. I only set it back if we will be away for a few days and when I bring the house back up to temp I only raise the thermostat 2 degrees at a time. I would just leave it at 65 all the time.