I just finished my first refrigeration course at the local tech school and will be taking my EPA test next week. We were taught to braze with an acetylene torch. I am going to install a Goodman AC (410) at our house. I was at Johnston supply picking up a 15% silver brazing stick. The guy at the counter said I need a 2 tank system to braze the copper lines. I do have an acetylene tank, but I think my tip may be too small.
Can I braze the lines with just the acetylene and what size tip do I need?