I've manually placed coal into these logistic chests so that my stone/steel furnaces get powered by coal, and one time i've noticed my steel/stone furnaces ran out of coal, and i looked into the logistic chests and noticed there was no coal to recieve from anymore, but kept the smeltables in. Is there a way to prevent this from happening upon global refreshing?

Thanks for pointing this out! It seems the issue arises because furnaces don't automatically request fuel from logistic chests, and refreshing might clear out manually placed coal. Since there are different fuels available, I need to tread carefully to avoid limiting flexibility for other users. Here are a few ideas I’m considering to address this—let me know what you think or if you have another preference:

Enable/Disable Coal as Default Fuel:
I could add a setting to automatically set coal as the requested fuel when a furnace is refreshed. This would make things simpler but could restrict the use of alternative fuels like wood or solid fuel.

Configurable Fuel Setting:
A more flexible option could be a setting where you specify the fuel type (e.g., coal, wood, etc.). This way, it suits users who rely on fuels other than coal.

Preserve Existing Fuel During Refresh:
If coal (or another fuel) is already in the furnace or logistic chest, I could ensure it doesn’t get removed during a global refresh. While this minimizes disruption, it might complicate the logic and could cause unexpected behavior in some setups.

Each of these has pros and cons, so I’d love to hear your thoughts or preferences before moving forward. Thanks again for your feedback!

I personally use coal for furnaces, but I could see the configurable fuel setting be used for other mods that uses different custom forms of fuel.

I'm not quite sure, but I'll try a little later, perhaps the chest can be asked to feed coal through a permanent combinator, for this you will need to connect the chests into a single chain with a wire, and ask it on the combinator, in this case any user will be able to variably set any type of fuel, not only the furnace, but also any building that consumes different fuel.

Yes, everything works fine.
The combinator is installed, a signal is sent to it, in this case I indicated 10 coal, and the chest is connected to the combinator, after which you need to select "create requests" in the chest itself, and the drones will bring the required amount.
In this case, it is even simpler, since the user himself specifies the amount of fuel needed, so as not to clog the extra cells of the chest with excess fuel.

This is implemented with version 2.0.0. I decided to go with a modular approach that completely replaces the old integration settings and allows for custom user configuration.

To enable your desired behavior—such as having requests for furnaces also include coal—you can now add the following entry to the Ingredient Integrations map setting:

furnace=coal

For more information on the new format, refer to the Integration Format section in the mod description.

Please let me know if this works for you or if you encounter any other issues!