dual steam and hot water

Tom M.

Weil McLain has provided a 1" supply tapping, a 3/4" control tapping and a return tapping. You should read the boiler instructions first but I would recommend having a pro look at your particular situation (sizing etc.). There is also an opening for a tankless water heater which can be used along with a circulator, expansion tank, relief valve etc. to give you a pressurized closed system that will be much kinder to the circulator.

Tom M.

AL_8

is a dual system possible with one boiler

I have a one pipe steam system, with a new weil mclane sg04 steam boiler, steam pipes that are probaly 70 yrs old, and 10 cast iron radiators. The boiler that was replaced 2 yrs ago was an old GE downfire which was quite large (to me it was a 25 gallon bath tub of hot water which kept the basement quite warm in winter, it barely heated the house with all the sludge packed in it, but I kind of miss it to be honest). Anyway for the most part the current system works well (suggestions from this site helped in the fine tuning). But my question is this, I am renovating my home and would like to have the controlablity and flexablity of hot water for the first floor of my home (unlimited access from the basement and six radiators). On the second floor I would like to keep with steam (no access to pipes behind walls plus less mess, four radiators). Is it possible to keep the current boiler and get both steam and hot water out of one system. If not what suggestions can you guys recomend. I would be grateful for answers that will lead me in the right direction. My home is located in Westchester County NY. Thank you for your answers.

Unknown

Read this first, it'll help a lot.

http://www.heatinghelp.com/newsletter.cfm?Id=29

Steamhead

If a steam system is working properly

it's just as flexible and controllable as hot water. And it won't freeze.

Also, you may find you have to replace the first floor radiators since they may not be big enough when used with hot water. One square foot of steam radiation will give you 240 BTUH (BTUs per hour) whereas one square foot of hot-water radiation is good for only 150 BTUH.

It may make more sense to keep the steam system and zone it using thermostatic radiator vent valves on the second floor.

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steve_6

you might want to check this out also

http://www.heatinghelp.com/newsletter.cfm?Id=22