A few operational questions about the new design:
I don't see any ports on the fusion module where a second unit can be networked. How do I network an additional unit in the future?
How do you shutdown the unit when you want to stop the reaction and let the fire go out without burning up the remaining fuel? With the new air/water inlet jet, I don't see how to cap off the inlet to starve the unit of air.
What is the small port & bolt for to the right of the ignition port (see below photo)?
What are your thoughts on draining the water tank when it's not in use during the freezing temperatures of the winter months in order to prevent ice damage?
Ok every time you run the unit you will need to open the needle valve to allow the water to flow. This is generally just a 1/4 turn open. When you conclude the run you want to shut this valve prior to shutting down the engine. I usually give it a minute to make sure all the water is evaporated.
There is no port cap to shut down the unit. When the engine has stopped the gas inside the unit is static, so air can not get in so there is no need to cap this intake off and a charcoal gasifier does not sit and smolder like a wood gasifier does. It will shut down and generally there is minimal smoke if any.
The larger port with the tee bar welded to it, is your ignition port; this is how you light the unit. The other port is for a temperature sensor for when we automate the units if this is needed. I added this revision in case we need it later.
For the Fusion you will note there are four button head screws on each side. These holes are to mount flanges if you want to network more units. You simply mount these NPT flanges and bang a hole saw through the center. The hole saw you would need is a 1 1/4". This made more sense as this way we can add ports and keep the units clean for RTR versions that are stand alone. Otherwise we would have to add those port flanges and then install plugs in them. This simply makes them ugly, adds more component cost when its not necessary and then time and labor. Running a 5 dollar hole saw to punch those holes out made more sense and we can provide that with flanges, your valves, couplings and the stand when you purchase an additional module.
If you look at your ammo box filter, those are the flanges we use now and this is exactly how I build them. I mount that flange on first and punch that hole out using a hole saw. piece of cake. However your Fusion has the four hole so I will need to know this if you ever do order an on module as I have changed to the smaller three hole version as they work better on the ammo boxes and I only want to stock on versions of the flanges.