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Common Household Remedies Request

I'm going to go through my annual ritual of pricing a new boiler -- this time, I'm sure I'll have success! -- so I'm hoping somebody else with steam can answer this question.

The system was, of course, designed and sized by "A Dead Man", so in order to figure out how much boiler capacity I need, I need to figure out how much metal the boiler must heat.* This includes the risers (the pipes to the boiler) and the (cast iron) radiators. The risers I can measure, and I know how to do the radiators: Get the dimensions of the radiator pipes, count them, get the model of the radiator, check a chart that lists model and capacity. Do that for each radiator (14, IIRC), add that subtotal to the pipe subtotal, and voila.

But I don't have the chart. Do any of you steam people have a link?

NOTE * I love the rugged simplicity of steam and the quality of the heat. And I can't afford to change anyhow.

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twonine's picture
Submitted by twonine on

There are some radiator sizes/ratings in this chart:
http://www.heatinghelp.com/files/posts/3688/Boiler%20Sizing%20Chart.pdf

Sounds like you have most of this down but pay particular attention to near-boiler-piping as new boilers typically don't have the head space inside and need a big external pipe header.
http://www.heatinghelp.com/files/posts/16104/Sizing%20a%20replacement%20...

I love Dan Holohan's humor and his respect for the Dead Men. I can think of at least 549 people who could take a lesson from him.

Submitted by lambert on

I don't know why I didn't think to go to Heating Help in the first place, but that is the one!

Bryan's picture
Submitted by Bryan on

This PDF guide provides more information than you probably need, but it is straight-forward.

twonine's picture
Submitted by twonine on

There is a lot of high efficiency condensing boiler hype lately but unless the system is configured to consistently bring return water significantly below 135 degrees back to the boiler, they are no more efficient than conventional boilers.

Submitted by lambert on

I'll pay a few more bucks to avoid any possibility of mechanical breakdown.

"The most reliable parts are the ones that aren't there.:"