I just installed a new S244 Hayward sand filter. I put the recommended 300 pounds of sand in the filter. Running 1 1/2 inch pvc on the whole system. I just started the pump today. I think the pressure is too high. Running around 14-16 PSI. I replaced this filter because I hated cleaning the old cartridge filter. The cartridge filter ran at 8-10 when a new cartridge was in. Does this seem too high for startup of a new sand filter or do they run that high?

Rick