Cold Radiators -- Short Cycling

Bill Crites

I have a 2-pipe steam system installed in the 30's on a coal
boiler with an automatic stoker/shaker. The namplates are for the Webster Co. The old boiler was removed (60's?) and replaced with a 440,000 btu Bryant gas unit. I have been here 5 yrs and its performened very well. It was serviced annually until last year (retired?-no answer) by a simple cleaning and the addition of Silver Queen's "Squick"
This morning I awoke to a cold house; the boiler was making steam but short cyling. I observed the pressures had begun a small leak from the Webster Dirt Straineer (024) mounted above the Webster 0024 F 7 T Trap. Walking the house I found two warm radiators in one of the two return circuits, the other circuit of returns seemed all cold. On the circuit with some heat there was (steam) against the inlet side of the third floor radiator -- it was stone cold and some warmth in the 2 radiators (convector style) below it.
Need help --- might be a blocked radiator ?
-- blocked main vents in basement 723H1 (Webster?)
-- problems with the Webster 0023 F&T Trap?
--- or? All thoughts are welcome! Bill Crites

clammy

cleaning

Check your main vents and clean the dirt strainer ,i would also recommend cleaning the water passes on the boiler and check the condintion of the returns for signs of mud ,mud in the boiler will increase your running time and produce less steam then a clean boiler as for the additve your adding every year i personally see no need for these products if it's to stop surging maybe the boiler may not be piped correctly ,i would look to replace the webster vent with a large gorton #1 and check your traps for sediment build up sounds like your not venting enough air out of the system peace and good luck clammy ps have some one check your pressuretrol the pig tail may be clogged these are things that are done durning a water side cleaning of your system and should be checked yearly by a heating professinal

g fisher

electric heating at home

allradiators are stone cold .electric heater working fine .if i could get some kind of diagram i could easily fix. thanks g fisher