In summary, the total time needed to complete the design, installation, and testing at a facility with one ACI unit is about 15 months, at a facility with two ACI units is approximately 16 months.
It will take fifteen months to complete the design, installation and testing at a facility with one ACI unit.  
mnli hypothesis: It will take fifteen months to complete the design, installation and testing at a facility with one ACI unit.   premise: In summary, the total time needed to complete the design, installation, and testing at a facility with one ACI unit is about 15 months, at a facility with two ACI units is approximately 16 months.