Setting up the Thermal Engine

Wait what? Where does the hot plasma gas go in?
It doesn't, the Thermal Engine on the NSS Nostromus is powered by lava. Don't try to wrap your head around how there's lava in space. Someone thought it was a great idea to power the station off of a burning hot ball of molten mineral.

The Engine is located east of Engineering on the Nostromus.

How do I actually set it up?
It's pretty simple to set it up once you've wrapped your head around it, but if you do something out of order or forget a step, the ship will be flooded in molten goo that destroys everything. It's also a very volatile engine, so pray to god that nobody sabotages it to call the shuttle early. The first step is actually getting there. You can access the engine by exiting Engineering through the north Maintenance Tunnel and taking a left into the Power Monitor room. There should be plenty of hardsuits left for you, so you put one on, turn your internals on and click on the button next to the airlock. Once you stand inside the airlock, click on the panel on the inside and select "Cycle to External". After a little bit of waiting, the air will be sucked out of the airlock and you can step out for a brief spacewalk. Make your way across the catwalk and repeat the procedure with the next airlock.

Okay, I'm in there, now what?
The first thing you always want to do is push the turquoise canisters labelled Coolant onto the connector ports in the small room south of you. Wrench them in place and open the valve to put the gas into the coolant loop. This setup isn't really ideal, as when the gas inevitably heats up again, it will burst the canister and fill the room with freezing gas. Keep your spacesuit on at all times when tending to the engine! Once you've done this, cycle through the airlock into the main containment.

First, make sure the lava tanks are on the injection ports. You can grab replacements from the control room. Wrench them in place and click on them to turn the valve to output. Nothing will happen.

The liquidpipes in the engine transfer any chemical reagent (yes, lava is a reagent too), but they use a suction system, so they'll always flow from many sources to one destination. By clicking on the pump to turn it on you'll apply suction in the pipesystem, this will quickly fill the engine with lava. You'll want to make sure that the containment around the engine never breaks. While it's cooled below room temperature, that shouldn't be too big of an issue, once you start running out of coolant and nobody on the station can make more for you, you should probably call the shuttle. Quickly.

Before the engine will actually produce power, you'll have to inject the CO2 (any other gas works just as well if you want to fuck around with atmos) into the heating loop. There's two valves, one blocking flow into the engine and one blocking flow out of the engine, they're north and south of the inner engine containment, don't forget to toggle them. Congratulations!

If the boilers are blinking their lights, you've set up everything correctly and should now be producing more than enough power for the station.