Is a fire-resistant door necessary for a basement room with gas heating?

Hello, the "heating room" in our house will be tackled soon. Can one of you tell me if a fire protection door is necessary for a basement room with a gas heating system? Are there any regulations regarding this, or can I use any random door for it? I hope you can help me. Regards, Dieter

Call your district chimney sweep ... He has to inspect the system. We have our heating (gas boiler) on the ground floor in a timber frame house and do not have a fire protection door.