In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
overcome excess edr. See attachment. Steam guy doesn't want to replace pipes with larger pipes, feels it's too invloved, suggests re-routing lateral B off branch to new branch off main. Connected EDR to current branch(A) is 82, the laterals are 3/4" except for C which is 1". By doing so connected EDR to A would be reduced to 44, with 38 connected to propose piping. Reason for seeking a fix is that only rad off C heats well at all times, other 3 will heat together if valves on rads off B are opened slightly, and rad on D opened all the way, however, rads off B will heat minimally, and D slightly better. If the rad off B are opened more, then D doesn't heat. Any feedback appreciated.