weil mclain howt water boiler pump location

Unknown

Get the book '' Pumping away" from this site. It'll explain everything and more why the pump SHOULD be on the supply side.. Thanks to Dan for making this happens.

ajchvac

weil mclain circulator pump location issues

why is it that Weil Mclain insists that the circulator pump on new cast iron boiler (CG series) installs be mounted on the supply? shouldnt pumps be on the return? these small pumps cant take the heat of 180 plus degree supply water, nor are they designed to pump up. on top of that, if the expansion tank is not on below the pump, the pump just pushes the water directly into the expansion tank. i only ask this because i have run across a few set ups like this where the customer has never gotten heat to their radiators because its all trapped at the boiler due to MFG stated pump location. am i incorrect on this? please let me know.

kpc_73

actually...

the new small pumps can take the heat of 180F water... up to over 200F... pump should be on the supply side pumping away from the expansion tank... to better deal w/ the air.

Unknown

Check the manual online

It shows 2 circ locations . On the supply or return pipe . With both setups the expansion tank is piped in before the circ .

I'm not sure which brand circ they send with the boiler , but the one we use is rated up to 230 or 240 degree water .

Paul Fredricks_9

You beat me to it. Dan's "Pumping Away" book it terrific. He really lays it all out. After you read it you can't believe you did it the other way for so long. Great book. It's available in the online store listed above.