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Running a simulation over the New Year

I'm trying to run a simulation for 14 days and gather the results from the final day as a representative day. My problem is that in some cases I want to collect results for a day in the first week of January.

The reason I'm running for two weeks is that I'm interested in the effect of storage, in particular how much I can undersize a boiler for a given storage set-up. The problem is that EnergyPlus finishes the warm-up period with all storage tanks at their target temperature. I have some very large storage tanks in some of my models which distorts the amount of fuel used on my representative day if I don't use this additional run-in period to let them reach their real operating profile.

Is there any way to do this?