Entrance condition:

{
  "comeInWithDoorStuckSetup": {}
}

Requires:

"canPrepareForNextRoom"
{
  "heatFrames": 55
}
{
  "doorUnlockedAtNode": 1
}

Unlocks doors:

{"types":["ammo"],"requires":[]}

Dev note: This would technically clear A, but depending on what is being done here, there will likely be too much acid to cross the room.