Langford, from the West Midlands, last refereed us in January when we drew 0-0 at home against Brighton.
It was his fourth Burnley game but for Harrington, from Cleveland, it will be a first Burnley league game in what is his second season as a Football League referee. However, he was the man in charge when we won 4-0 at Bootham Crescent against York in the 1st round of this season's Capital One Cup.
There will be more on both referees ahead of the respective fixtures.