기술정보
http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=21&cad=rja&uact=8&ved=2ahUKEwimgZDP0cjfAhVGU98KHbL1C3IQFjAUegQICRAC&url=http%3A%2F%2Ffiles.danfoss.com%2Ftechnicalinfo%2Fdila%2F01%2FDKRCC.PI.RS0.B4.39_EKE1A_az.pdf&usg=AOvVaw3J3ilzWPdwEOdglAFrQ-01