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Recent hospital jobs we've done they've insisted on virtually no deadlegs, taking the return from right next to the basin/sink/whatever isolating valve. How far are the basins off the hot main and are they regularly used? If not far there could be a case for doing away with the individual returns. Depends on the authority.
I'm assuming the pipe insulation is okay and you're not losing too much heat from the pipes. I'd look at (1) pump rating, make sure you've plenty of flow/head in reserve, (2) sorting out the l/s valves on each return from the basins and perhaps put in a ballofix or similar next to them so anyone doing work on the circuit isn't hopefully tempted to use the l/s for isolation.
I'm assuming the pipe insulation is okay and you're not losing too much heat from the pipes. I'd look at (1) pump rating, make sure you've plenty of flow/head in reserve, (2) sorting out the l/s valves on each return from the basins and perhaps put in a ballofix or similar next to them so anyone doing work on the circuit isn't hopefully tempted to use the l/s for isolation.
