Heating Help

on the smith G8 boiler

@ March 19, 2012 12:04 PM in Latest Smith G-8 Steamer

just out of curiosity guys, does the smith G8S-3H 350 sq.ft. steam boiler have
two  2" supplies or only one?
thank you all

we've all done it

@ January 20, 2012 11:03 AM in I did, yes I did...

just relax.  use a couple wraps of wicking on the male threads & you'll be fine.

help identifying burnham boiler

@ November 17, 2011 11:52 AM in need help identifying burnham boiler

rod,
right you were.  spoke with beckett this morning and learned that  the set-ups for the mst-288 and the 396 are identical  except that the 288 uses a lower gph nozzle and a "low fire baffle plate" 
thanks

help identifying burnham boiler

@ November 17, 2011 11:52 AM in need help identifying burnham boiler

rod,
right you were.  spoke with beckett this morning and learned that  the set-ups for the mst-288 and the 396 are identical  except that the 288 uses a lower gph nozzle and a "low fire baffle plate" 
thanks

need help identifying burnham boiler

@ November 15, 2011 1:29 PM in need help identifying burnham boiler

i have a chance to pick up a two year old mega-steam for a very good price.  the homeowner had it pulled out to go with fhw. (?)  as he lives a ways away i haven't been there yet to check it out yet.  problem is, he doesn't know what boiler it is.  according to him there's no tag of any kind on it with the model number.  there's the tag that lists all the Mega-steams and the section count but that's it.  he removed the top section and says it has three sections but according t his reading of the tag the 288 and 396 both have three sections (?).  i can use a 396.  so, how can we tell which boiler it is.  he called burnham but they were not of any help according to him.
as always, thanks for reading and thanks for the help.

exit velocity

@ September 18, 2011 1:54 PM in exit velocity question

nice work those jobs.  appreciate it,  if it wasn't you or dan or a couple of certain others on the wall telling me that it will work ok for a mst-396 to supply 330 sq. ft, of radiation through a 2" counter-flow main i'd be concerned. 

exit velocity question

@ September 17, 2011 12:13 PM in exit velocity question

what boiler?  well, i was originally going to use an mst-396 because of the burnham technology but decided against it because the measured edr is only 330 sq. ft. so i was considering a smith g-8 (8S-3H) rated at 350 sq.ft.

exit velocity question

@ September 17, 2011 10:39 AM in exit velocity question

as it says in my original  question,that was my thinking,to come out of the 3" drop header with a full-size 3" supply up about 3' into the 2" main.  i was even considering going to a 4" drop header and supply  and probably would if i didn't have a bunch of 3" fittings left over from a prior job.  the main is a 2" counter-flow and i'm very concerned about new-boiler steam velocity causing a problem.

exit velocity question

@ September 16, 2011 11:29 AM in exit velocity question

thanks to all for the explanations.

exit velocity question

@ September 14, 2011 9:07 PM in exit velocity question

just out of curiosity...let's say we have a boiler here, could be any boiler, and this boiler we have here has a 2" supply tapping.  so we go up about 3' with a 2" supply then down into a 3" drop header.  then, we come out of this drop header with a full-size 3" supply up about 3' into the 2" main.
so,my question is; is the EFFECTIVE exit velocity of our steam measured at the 2" supply tapping at the boiler section or is it taken at the 3" supply out of the header.
i was just curious.
thanks,guys

drop headers and the 28 inches

@ August 12, 2011 1:17 PM in drop headers and the 28 inches

i get it,  thanks very much.

drop headers and the 28 inches

@ August 12, 2011 1:17 PM in drop headers and the 28 inches

i get it,  thanks very much.

drop headers and the 28 inches

@ August 12, 2011 10:55 AM in drop headers and the 28 inches

just want to be clear on something recently discussed here...and the question is about a boiler install i've got to do. i can run the supplies up to a height of 46" from the nwl before i make the 90 down into the drop header.
my question is; can i drop the drop header to a point below 28" above the nwl?  Does the drop header become the "lowest steam carrying pipe" from which the A dimension is taken?  i always thought that the critical thing was to give the supplys all the height you could and you could position the dropheader as low as possible to give you a good lead out of its top up into the main giving the steam a second chance to shed water.
thanks for straightening me out here.

main venting

@ July 23, 2011 2:56 PM in main venting

thanks again for all the feedback.

no, they didn't get blown up by pressure.  they all worked for a while and then they would intermittently stick open.  like i said i boiled them in vinegar, they'd work for a while, then sometimes stick open and not close on steam,  and this happened on two different systems.  the gortons are bullet proof.  i still have one of the 75's because i can't bear to toss after what it cost.  tell me what "CLR" is and i'll try boiling it in that and whacking it a couple of times.  i was so ticked off about that one #75 that i wanted to send it back to hoffman to test but it proved to be too much of a hassle.  and to the author of the venting book, thanks.

and thanks to everyone who knows his steam stuff, who reads these threads and takes the time write to help the rest of us hackers out.  its a beautiful thing.

main venting

@ July 22, 2011 1:46 PM in main venting

yes,they were all properly installed and not damaged by water hamer.  it really irked me because those 75's , they don't give 'em away.

main venting

@ July 20, 2011 10:54 AM in main venting

thanks to everyone for all the feedback.  think i'll go with the two smaller as opposed to the single larger because of the failure/replacement considreation that was raised.  i've had to replace several hoffman 4A's and two hoffman 75's that refused to close and they were all fairly new units.  tried boiling them in vinegar and they worked for a little while but then got stuck open again.  just out of curiousity, anyone knew what  the venting rate for a 4A?. 
thanks again to all.

main venting

@ July 20, 2011 10:54 AM in main venting

thanks to everyone for all the feedback.  think i'll go with the two smaller as opposed to the single larger because of the failure/replacement considreation that was raised.  i've had to replace several hoffman 4A's and two hoffman 75's that refused to close and they were all fairly new units.  tried boiling them in vinegar and they worked for a little while but then got stuck open again.  just out of curiousity, anyone knew what  the venting rate for a 4A?. 
thanks again to all.

main vents

@ July 18, 2011 1:25 PM in main venting

yes sir thats the only main in the system,  would you use the 2 #1's or a single #2?

main venting

@ July 18, 2011 12:28 PM in main venting

i have a 2 inch main that is 22 feet long.  for a main vent is one Gorton #2 enough or do i need more?
thanks guys

main venting

@ July 18, 2011 12:28 PM in main venting

i have a 2 inch main that is 22 feet long.  for a main vent is one Gorton #2 enough or do i need more?
thanks guys

boiler sizing

@ June 15, 2011 9:32 AM in boiler sizeing on counter-flow system

got it. thanks dave.

boiler sizeing on counter-flow system

@ June 14, 2011 11:56 AM in boiler sizeing on counter-flow system

i'm going to replace one of the boilers in my two family house, the one that heats the top floor.  the connected load is 320 sq. ft.. the system is a counter-flow with  a two inch  main 20' long.  i have a gorton #2 on the main and its wrapped in 2". 
i want to use a burnham mst series because of their effiency ratings.  the boiler in there now is an arcoliner rated at 360 sq. ft. of steam which has heated the place fine except that it drinks oil.  thanks to dan's seminars and TLAOSH i've taken care of the fine details in the system and it runs well.  even heat and not one bit of noise.
so, 320sq.ft. of connected load X 1.33 pickup factor=425.6 sq. ft. of steam
my question is; will the mst396 (396 sq.ft.steam) be adequate or should i go to the mst513.  even with a 3" drop header i' concerned about putting too much steam into that 2" counter-flow main.  i've read about how touchy the counter-flow systems are to oversized replacement boilers.
what would you guys recommend?
thanks in advance for reading this