is there any advantage in using a small buffer tank instead of a low loss header?

john123

anyone guide me here--please.

GroundUp

Both could create hydraulic separation, as could a hydraulic separator or even closely spaced tees, but unless there is a need for added mass, a buffer serves no purpose beyond hydraulic separation.

clammy

I have used boiler buddy buffer tanks on one or two mod con that where mirco zoned to prevent short cycling which it did . I ll always look at the job and the output of each zone and the lowest modulation of the boiler when thinking about buffer tanks or if doing mix temps where there is mirco zoned radiant then having a buffer tank really makes sense .
Peace and good luck clammy

hot_rod

Any amount of added volume will lengthen the on cycle. You can use a formula to determine the “time”
with a mod con, compare the lowest turndown to the btu of the smallest zone or load

Tank can be much smaller for modulating type devices, heat pumps and boilers

Ive done a few 6 gallon electric he tanks as buffers to get me over a 10 minute run time with micro loads like bathroom zones

It just depends on your goals