series loop to free standing radiators

dhghm

the job calls out to remove the existing series loop system with fin on tube basebaard and replace it with free standing cast iron radiators.the equal heat loss will be three 10,200 btu output cast iron free standing radiator.one room will remain fin on tube.I would change the loop which is know 3/4 copper series loop to a monoflow piping to each radiator with a 3/4 x 1/2 monoflow tee(existing boiler piping/8-3/4 x 1/2 monoflows-supply and return 1/2 to radiators) will i have flow problems ? larger circulator needed? or no problems with flow or heat output? thanks for your help

Unknown

head loss

Find out the head loss rating of each tee (like 10' for some, and it varies)and calculate that into your pump sizing.

Then keep your branches (including the radiation) under that number, you'll be OK. This is where pulling a radiator out and inserting baseboard usually doesn't work, because of the increased length and head loss.

It certainly demands that you do the math, when you choose to go monoflow. It's good that you brought it up.

Noel