Documentation states that each of the three kinds of Enterprise page caching can be enabled individually:
All three caches work independently from each other. Depending on an implementation project’s exact requirements, only those caches that are needed can be enabled.
This, however, does not make it 100% clear whether this extends to the “open source” First Level Page Caching.
Can I use Enterprise Page Caching mechanisms without enabling the First Level Page Caching?