Gravity system

Ryan Metivier

I need to replace a 104 year old gravity boiler in a 2 story house with a demand of 72k demand acording to the radiator sizes. The system is split with 2 3" supplies and 2 3" returns for close piping. I can not find any boilers with that size and amount of tappings. The Utica boiler has 2 2" supply tappings and one return. Can I use this configuration and tee the return and still have enough flow? Circulators are unfortunately not an option.

Unknown

Ryan

circs not an option?, ever considered this? , it may have the tapping sizes you`re looking for.
Always try not to use a standing count though, HL calc is the best method.

Dave

scrook_2

boiler sizing

Use total radiation (radiator size/count) for steam, but use structure heat loss for hot water systems.

Why isn't a circulator an option?

Al Roethlisberger

My overhead gravity system was converted


Not a pro here, but my old overhead gravity system uses a 6 inch(I think) riser and return, but were reduced to 1.5" to connect to the boiler and circulator sometime around 1991.

And this reduction was original to the system.

Since I assume you would be converting to a closed circulated system, why can't you use circulators since convection isn't going to be the vehicle anymore?

More than anything else, I am just curious what the barrier is for this application.


Al

Unknown

Al & scrook,

maybe he`s Amish?, just a thought, but could be?

Dave

Al Corelli_2

Gravity

The Weil McLain EG series is a good choice here.

It is the ONLY WM boiler I will install.

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