install:To invest with an office or dignity by seating in a stall or official seat, as the choir-stall of a canon in a cathedral, or that of a Knight of the Garter or Bath in the chapel of his order, the throne of a bishop, etc. Hence, To instate in an office, rank, etc. with the customary ceremonies or formalities. Often with object or adverbial complement.——Oxford English Dictionary

install:to put a piece of equipment somewhere and connect it so that it is ready to be used.——Longman Dictionary of Contemporary English  @en