noun (n)

• the act of installing something (as equipment)(noun.act)

  Example:
  The telephone installation took only a few minutes.
  

  Synonym:
  installing, installment, instalment
  

  source: wordnet30
• a building or place that provides a particular service or is used for a particular industry(noun.artifact)

  Synonym:
  facility
  

  source: wordnet30
• a formal entry into an organization or position or office(noun.event)

  Example:
  He gave a speech as part of his installation into the hall of fame.
  

  Synonym:
  induction, initiation
  

  source: wordnet30
• The act of installing or giving possession of an office, rank, or order, with the usual rites or ceremonies; as, the installation of an ordained minister in a parish.(noun)

  source: webster1913