Heaton said: "It's brilliant. I'm very proud of that and honoured, it's a responsibility I'm looking forward to.
"I'm pleased the manager's given it to me. He only mentioned it to me on Friday and I said 'yes' straight away.
"It's a first for me and I'm looking forward to it. All you can do is give it your all and I'm certainly looking forward to doing that. It was a little bit of a surprise having not had it during the season, but I'm absolutely made up and I'll try to do the job some justice."
Heaton guided the Clarets to a 1-1 draw with Leeds at Elland Road in their first game of the new Championship season.