I am not overly familiar with your Beaver model but I believe, generally, all Beavers have a basement heater (radiator/fan) that gets its heat from the heated coolant provided by the Aquahot or Hurricane heating systems. This basement heater is located on the front wall of the basement compartment housing the waste tanks... inside the basement access door on the streetside just ahead of the dual axle.
Our coach is a 2004 Beaver Marquis with a diesel-burning Aquahot. Our coach has four heating zones, each with one or several heaters (radiator/fans). Our living room/kitchen (zone 1) has three separate heaters, the bathroom (zone 2) has one heater, the bedroom (zone 3) has one heater, and the basement (zone 4) has one heater in the area of the waste tanks. The basement heater has a non-adjustable thermostat and all the heaters get their heat from the Aquahot. But, of course, the Aquahot must have either the diesel/propane burner ON, and/or the 120vac electric element ON, and/or the coach engine must be ON.
Again, the heat is not generated at these heaters. Their heat is provided by coolant hoses coming from and returning to the Aquahot where the coolant is heated.