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Just looked at an old Smith 340 Mills boiler. The system has both radiator air vents and steam traps on other radiators. The boiler is set in a pit to maintain the "A" dimension.
The owner does not want to pay for the old boiler removal.
I'd like to install a new steam boiler higher then the old using a simplex condensate return pump and receiver.
? Do I need a steam trap before the receiver tank?
? Should the return piping remain at its current elevation? (in the pit)