yes, the suction side. I am not sure what your "kit" is. The easiest is to un-attach the hose on the suction side of the pump (goes to your tank) Attach a tube about 18 inches long to where you just removed the tank tube. Put the end of this tube into you anti freeze jug (NON TOXIC Antifreeze), open a spigot to get pump to pum...when you see pink, close spigot. do same for shower, toilet, bathroom faucet...whatever. should use about 2 gallons of anti freeze. Pour a lil down each sink trap.