Converting old cast iron boiler maintaining existing radiation

oldpool

Have an old boiler with cast iron radiators. Would like to use a low mass boiler, however I fear clogging the heat exchanger. Understand Dan's apprecation of this combination. Are their in-line filters that can be addeded? Any thoughts?



Thanks 2

kcopp

lots of ....

options.

http://www.youtube.com/watch?v=4zT74nJoi3g

http://www.spirotherm.com/products/combination-air-dirt

Don't forget to clean it w/ a good cleaner before...



 http://www.rhomarwater.com/products/residential-hydronic-radiant/

Steamfitter66

what I do is

flush with diluted muriatic acid prior to demo if possible. Then add a strainer on the return side pipping.

Most larger systems have side stream filters which filter a percentage of the water down around 50 microns or so. I have installed these on Mod con retrofits but that is site evaluated.

I would highly recommend a Triangle Tube Prestige boiler as it is almost impossible to plug and is as good as anything on the market.

Make sure you use a company that knows boilers and is not a forced air or plumbing contractor that once in a while puts in a boiler. I've fixed a lot of those.

A heat loss calculation should be done prior to any contract being signed. If a contractor goes by rule of thumb or seat of pants stay away.

Ive been doing this for over 25 years and can guess pretty close to what a house will be but I still do a complete load calc every time.

Eric