Joined on September 24, 2009
Last Post on November 24, 2013
@ November 24, 2013 1:43 PM in Gorton Water FountainsDon't shoot the messenger. Air vents are not designed to hold back water. There is an underlying problem that needs addressing.
@ November 20, 2013 9:57 AM in Combustion airGood morning. I am going to look at a job soon. Customer says that he is burning 407 mbtuh. He says that the boiler room is enclosed. There is a 5" pipe running from outside into the boiler room. The 5" pipe is the only sorce of outside air. The customer would like add a fan to the 5" pipe to ensure adequate combustion air. Is there a formula for determining what size fan etc to use? Obviously too small is no good and too big is no good. Again, I haven't seen the actual job yet.
Thanks in advance for the advice.
@ October 19, 2013 9:06 PM in adding to 1 pipe steamThere are a few issues to consider.
1. Will the boiler be able to handle the extra load?
2. Will the steam main and return be able to handle the extra load?
3. Will the vertical riser be able to handle the extra load?
4. Will the horizontal runout from the main be able to handle the extra load?
There is no one answer fits all for these questions.
Every radiator puts out a certain amount of BTU's. Every part of the system has a certain amount of btu's that it can handle. If you overload the boiler,then there may not be enough steam to go around. If you overload any oft the pipes then you might have issues with banging and spitting air vents.
I would humbly suggest purchasing a copy of "Lost art of steam heating". it's a fairly easy to read book that will give you all the info that you need for most steam jobs
@ October 17, 2013 9:16 AM in riser vents to help heat our coldest line?Good morning. Are the rooms cold or are the radiators cold? The radiators should all get hot at relatively the same time. If thats happening and the rooms are still cold, then there are probably issues not directly related to the heating system
@ October 16, 2013 11:15 AM in Vapor returnThanks Dave and Joe for the links. Real eye opener! If I do remove it there is no way in the world that I would sell it. Going into my collection. You are always welcome to come visit. I don't mind sharing my toys.
@ October 16, 2013 9:45 AM in Vapor returnOne pipe goes from the header into the return trap. The other pipe goes from the return trap directly into the dry return. There is a Hoffman 74 vent at the end of the dry return(looks a lot like the Hoffman#75).
@ October 15, 2013 11:30 PM in Vapor returnThere is no valve on the piping leading to or from the return trap.
@ October 15, 2013 11:27 PM in Weird radiator valves on vapor systemThe only thing that I saw was the pressure control in the basement ( two of them actually). Some of these valves have been replaced with standard radiator valves. The copper tubing is still sticking out of the floor. I am assuming that there are no hidden pressure tanks. If there were then something should be coming out of the copper tubing(unless of course they were capped off somewhere). Is there any reason not to replace them with standard radiator valves?
@ October 15, 2013 11:02 PM in Found Main Vents!Those are not main vents.They are radiator vents on the main!
@ October 15, 2013 9:32 PM in Weird radiator valves on vapor systemYes. The controls in basement are mergold. The valves on radiators are Power(I think,not sure).
@ October 15, 2013 9:02 PM in Vapor returnIs it possible that it will pass steam into return when it shouldn't? Also, any info on rad valves in my other post?
@ October 15, 2013 8:51 PM in Vapor returnAre there any drawback to leaving it in? If I take it out, I will be adding it to my collection. You are always welcome to come visit.
@ October 15, 2013 8:47 PM in Vapor returnDo these things go bad? Is there a possibility that it wont let steam into the return when it should or that it will let steam into the return when it shouldn't?
@ October 15, 2013 8:44 PM in Vapor returnFound one of these on a vapor system. There is a pipe running from the header into this device and another pipe running from the device to the return. I have to crack out my copy of lost art. I am assuming that this device allows steam into the return when there is a build up off boiler pressure. The idea would be to turn the B dimension into an A dimension. Any info (i.e. names, mechanical details) would be greatly appreciated. If I want,can I install a vaporstat and remove this device? With the lower boiler pressure, this device should not be needed.
@ October 15, 2013 8:37 PM in Weird radiator valves on vapor systemCan these valves be replaced with conventional radiator valves? The customer is having balancing issues. Adjustable valves would give the customer an ability to limit/increase steam inlet. Some of the valves have already been replaced with conventional radiator supply valves
@ October 15, 2013 8:29 PM in Weird radiator valves on vapor systemThere is a thin copper tube that runs from the rad valves to the pressure controls in the basement. Probably to sense pressure and "communicate" with controls.
@ October 15, 2013 8:27 PM in Weird radiator valves on vapor systemGood evening. Came across these radiator valves on a job today. Apparently they are controls by the devices in the basement. The devices seem to be some sort of pressure control.I would imagine that the idea is for the radiator supply valves to shut off when the pressure gets to the setpoint. There is some sort of spring in the body of the radiator valve. Has anyone come across one of these? Is there anything to know about them? Proper settings, adjustability, historical info etc.
@ October 14, 2013 8:15 PM in Dirty Water in Sight GlassStart off by filling and draining from bottom 2 or 3 times. This is something you should do before the beginning of every heating season anyway. Fire up the boiler after the final fill and watch water line
@ October 14, 2013 12:59 PM in Hartford loop questionThank you for you response ,Rod(homeowner or not,you do have a rather impressive understanding of steam).
1. I am not really proposing to move the equalizer. I am proposing to move the loop part of the Hartford loop. The equalizer will stay put. In many installs, the equalizer is a "good" distance from the boiler anyway. Also, I am not sure that I understand the issue with the steam condensing. The steam will always condense when it hits the water in the return. Also, I am not quite sure that there is steam in the equalizer. How would steam get from the header into the equalizer if the equalizer is unvented? The way i understand it is that the pressurized steam in the header will pressurize the air in the unvented part of the header and the equalizer and that in return will pressurize the wet return and keep water from being pushed out of the boiler.
Got to run. Will try to thing about point number two and respond.
@ October 14, 2013 9:32 AM in Hartford loop questionCome out of the boiler return tapping with a short nipple.Elbow pointed up. Vertical Nipple. Elbow between 2 and 4 inches below normal water line. Close horizontal nipple. Elbow pointed down. Vertical nipple. Elbow at level of wet return. Tee in wet return,connected to equalizer. Basicly, hartford loop is up against the boiler and equalizer is connected to wet return.
@ October 13, 2013 10:46 PM in Hartford loop questionAnother benefit would be the ease of installation. The above mentioned setup gives more installation options, very helpful when there is limited space or give in pipes.
@ October 13, 2013 10:42 PM in Hartford loop questionGood evening to all. Is there any functional benefit to connecting the equalizer and the Hartford loop? In my mind there are two drawbacks to the conventional Hartford loop connection. The first is that the piping between the loop and the boiler is unprotected. The second potential drawback is that steam could potentially leave the boiler from the return tapping and go up the equalizer into the header. This would obviously cause all sorts of problems. Wouldn't the best option be to make the actual loop at the return tapping of the boiler. The equalizer would be connected a bit further away,directly into the wet return. The Hartford loop would double as a sort of heat trap. Any steam bubbles leaving the boiler would get trapped at the top of the loop. I dont think that it is possible for steam bubbles to go downwards in water. Any thoughts would be greatly appreciated.Thanks