oversized boiler????

T_3

I am not sure i did the math like five times measured the rads thought i did it all right.

HOWEVER... I can hear the air pushing out of the vents like crazy. the old boiler you only heard a wisper. vents are noisy...

getting hammer every five days continuing to skim every couple of days. I hear a wave of water going down the steam main a day before the hammer starts.

Skimmed and put brand new $20 a piece vents on helped for five days then returned. Boiler water oily and filthy againtonight.Skimmed it tonight.

Guy at work thinks I need to plug a orifice or two in the gas burner tubes any ever do this before? is it safe ? will it help? PICS attached can anyone see anything wrong?

Pressurtrol at two with a diff of 1 going to turn down however I havent seen pressure on the guage?

does 140,000 btu sound way to big for a 1100 square foot home I know It goes by square foot of steam but does that sound crazy to anyone? it is insulated with new windows and doors...

LOST DEPRESSED AND LOSING PATIENCE

PLEASE HELP!!!!

tim smith

140mbh does sound plenty big or too big but your system is still

dirty and causing the majority of problem, flush and skim, skim skim. Tim

ttekushan_3

What tim said but also

Tim is right. Your system is being steam cleaned vigorously, violently even. No way around it.

How did you measure the radiators? Did you use a good chart that shows photos or diagrams of the style of radiator you have? I've seen sizing going wrong in both the too big and too small directions when the "column radiator" column gets switched with the "tube type" column.

Even if you are heating at 45 btus a square foot, the radiators being sized for that heat loss, you would need in the neighborhood of 60,000 btus and by the time we account for efficiency loss and pick up factor, you're still at around 90,000 btus input.

So yeah, its large, which brings to mind another thing. I see by the return arrangement that you likely have a one story house and the system is COUNTERFLOW. Meaning that the condensate rolls back in the opposite direction of the steam flow. Thats what those two lines dropping into the return are.

My guess is that the old boiler had large steam outlets and no Hartford loop. What kind of vents did you put on the radiators?

The only practical thing you might do at this point is use the smallest vents possible to slow the steam velocity so the condensate can get back to those drains on the steam main.

Ted Robinson

Boiler too large

I had to convince my Contractor that I would accept the responsibility for 'right sizing' the exact same size boiler for our 2100 sq ft house.
I have to skim & skim, but when the water isn't very dirty, the system is pleasingly quiet.
Would the writer's situation be helped by a though pipe insulation job?
Keyspan doesn't charge more for a larger boiler, but I wanted to have a calmer, more efficient system.

nicholas bonham-carter

oversized boiler?

if it is oversized, would the addition of a dhw coil help things?-nbc

scott k_3

I doubt this has anything to do with the original issue but aren't pigtails suposed to be horizontal?