Make sure your remote Machine enabled PSRemoting by running follwing command in powershell
Enable-PSRemoting –Force
From the client computer run following command to establish the connection.
net use "\\{RemoteIP}\c$" "{Password}" /USER:"{Username}" /persistent:no
Here after you can use Copy-Item, Delete-Item over the network.
Copy-Item [PACKAGEPATH]\* \\[COMPUTER]\c$\installers -recurse