Piping of cooling towers:
                          
                        
                        
                           Piping  should be adequately sized in accordance with accepted standard practices.
                        
                            • Gravity  drain to indoor storage sump requires proper head differential and piping  design considerations.
   Allowance  must be made for flow, pipe size, piping layout and distance of cooling tower  from the indoor
   Storage  sump.
  
   • On multiple  tower installations, valving and/or pipe sizing should balance pressure drops  to provide equal
   Inlet pressures. Equalizing lines can be installed between  cooling tower sumps and are available as an option