Corrigendum - Annual Maintenance Contract For Hvac ( Vrf ) System Installed In Auditorium-Rli Of Ntpc Solapur , Amc Of Hvac System At Auditorium , Pkg Ac ( <=10-06Tr ) 12W Chks , Pkg Ac ( <=30-16Tr ) 12W Chks , Pkg Ac ( <=15-11Tr ) 12W Chks