Heating zones for front and back heaters
I plan on using the webasto heater and the front and rear heating coils as a heating source for the bus. The idea is to put two 3 way valves in line and create a closed loop for just heating the bus (with an expansion tank) or flick a switch to also heat the motor as originally designed, bypassing the small closed loop expansion tank. My question is for those that have done anything like this: Did you use one zone or two for this ( ie control the front and back heater independently)? If you used only one zone where there any issues with running the webasto on a single heating coil?