Micro boiler lay out

Patrick Linhardt, \"Linhardt's Field Guide to Ste

Hi J.,

The position of the pump is relative to the expansion tank location, not the boiler. When the expansion tank is on the suction side of the pump, the pump's differential pressure is added to the discharge side of the pump. That's a good thing, especially for air control. When the expansion tank is on the discharge, the pump's differential pressure is subtracted from the suction side of the pump. That could be a bad thing, it decreases the pressure on the radiation, allowing air to come out of solution to form big enough bubbles to block circulation.

Best regards, Pat

J Remer

Micro boiler lay out

I have seen an electric micro boiler with the pump pushing through the boiler, and I have seen others with the pump sucking through the boiler, I'm not sure of the proper lay out of a system. any help, coments. Thanks

ALH_4

or

use a Laing EPR with its built in pump. I love these things.