The Party Grill 400 CV is designed to use Campingaz's compact CV300+ and CV470+ gas cartridges, which are high-pressure systems. Connecting it to a larger gas bottle would require a different setup, as the burner is designed for high-pressure gas directly from the canister. Typically, larger gas bottles require a regulator to reduce the pressure, which is not compatible with the high-pressure burner in this model.

If you want to use a larger gas bottle, you would need a different type of grill or stove that is compatible with low-pressure systems and includes a regulator.