Iran will play Germany in Pool B on Tuesday in its last preliminary round match.
Team Melli started the campaign with a 3-0 win over Ukraine on Friday.
Volleyball has a rich Paralympic history. It was added to the program in 1976, with standing volleyball taking place and sitting volleyball as a demonstration sport.
From 1980 to 2000, both standing and sitting events were contested for men, with sitting volleyball added for women in 1980.