In the thread about variable speed and fixed speed circulators overpumping through the boiler was mentioned. I understand that it will run a burner type boiler (gas, oil) more efficiently by having longer burner on time. The question is is it harmful or make any difference in a solid fuel boiler? I overpumped on purpose, thinking inherrant return protection. The boiler loop is the primary loop with 1-1/4" copper about 30' total and a 0010. The secondary loops dump low temp water into the fast-flowing high them for return protection. I monitor the return temp and use it as an imput to my injection mixing controller for the radiant slab. Most of the time I have a 10-12 degree delta due to this large flow of water through the primary loop and smaller flow from the slab which is usually in the range of 120F.
It has been working well and return temps are always high, but would slowing the flow through the boiler help anything?
Thoughts?
TS
It has been working well and return temps are always high, but would slowing the flow through the boiler help anything?
Thoughts?
TS