gurgling in riser

neilc

for giggles,
on your pressuretrol, (I don't know heat timers),
raise your differential to 3/4,
and lower the cut out just a smidge more, another 1/2 #,
every time you lowered your pressure you got a little happier,
and when you read enough around here you'll find you're saving fuel and money by running the lower lbs also.

that said, you may still have issues elsewhere as others have suggested,

Fred

neilc said:

for giggles,
on your pressuretrol, (I don't know heat timers),
raise your differential to 3/4,
and lower the cut out just a smidge more, another 1/2 #,
every time you lowered your pressure you got a little happier,
and when you read enough around here you'll find you're saving fuel and money by running the lower lbs also.

that said, you may still have issues elsewhere as others have suggested,

The problem with lowering Pressuretrols too low is sometimes they don't want to cut back on. Cut-in of around .5PSI (1 on the Differential scale) and Cut-out of 1.5PSI on the Main Scale is about as low as you can go with any degree of repeatability. A Vaporstat is the way to go if lower is desired.

gramcynyc

The pressuretrol is not well defined below 2psi. There isn't any settings below in fact.

I'm content with the progress I've made. I have to also meet the heat requirements of the other tenants.

gramcynyc

But I appreciate your push. You got me down to 1.5psi with a difference of 1.
As Fred mentioned I fear it may not come on again if too low. In fact I had to tweek it up once cause it didn't.

gcp13

If you did shorten the on cycle on the timer that could have shut the boiler off before the pressure climbed too high
But may not run Long enough to heat all the radIators
The boiler should be cycling off on the pressuretrol rather than the heat timer unless the boiler is sized correctly and never builds pressure
You should try one thing at a time

gramcynyc

Nope.....been 4 cycles since new settings and all risers have been hot. "On" cycle should get longer automatically as the temperature drops tonight.

Metalguy

Hi, I'm also in NYC, years ago I was in an apartment with steam heat, one radiator in one room was always gurgling, till I finally removed the vent and found a small chunk of paint, cleaned the vent and the small threaded hole it screwed into, reinstalled the vent, gurgling was gone, It's supply pipe would also clang when going from cold to hot and than hot to cold, I fixed that by shoving a piece of auto heater hose down around the supply pipe into the hole in the floor. Just a suggestion. Hope you solve your issue... DJ

vaporvac

Those are good suggestions, @Metalguy. BTW, lowering the Ptrol doesn't result in less heat, but actually FASTER heat delivery. You're probably as low as you can get without a Vaporstat. Change the other safety to 5lb; Why not, really. That's too much as it is.
This post just emphasizes that these configurations of pipes, boilers and valves make up a system; change one thing and be prepared for changes elsewhere (and not always good).