An installer sets up a zoned distribution system as shown below. To keep it simple, he uses the same size piping for the headers and all the distribution circuits. The heat source is a low-mass, copper-tube boiler with high-flow resistance.
Falsken Water Systems’ the Heater Treater (celebrating its 20th year) was originally designed for protecting tankless water heaters from hard water scaling, but it has proven effective on all water heating devices.