NORTON — A large appliance store planning to move into the town’s new business park is getting a tax break. Residents at a special town meeting Monday night overwhelmingly approved the break for Yale Appliance, which had been located in the industrial park in Mansfield before moving to Stoughton. Eighty-one residents turned out for the rare summer town meeting held in the high school auditorium, and masks were required. Acting on the recommendation of local health officials, select board members voted Thursday night to require masks in all town buildings. Under the so-called Tax Increment Financing agreement, Yale Appliance and Condyne, the owner of Blue Star Business Park on Leonard…