We consider an exclusion process with long jumps in the box $Λ\_N=\{1, \ldots,N-1\}$, for $N \ge 2$, in contact with infinitely extended reservoirs on its left and on its right. The jump rate is described by a transition probability $p(\cdot)$ which is symmetric, with infinite support but with finite variance. The reservoirs add or remove particles with rate proportional to $κN^{-θ}$, where $κ>0$ and $θ\in\mathbb R$. If $θ>0$ (resp. $θ<0$) the reservoirs add and fastly remove (resp. slowly remove) particles in the bulk. According to the value of $θ$ we prove that the time evolution of the spatial density of particles is described by some reaction-diffusion equations with various boundary conditions.