how hot should the air comeing out of this unit be?. i have the setting at 9 pellet feed and 9 blower speed and its only luke warm. i ran it for 2 days straight and 3 bags of wood pellets and the only thing hot on it is the door and glass window. any help on getting heat out of this unit is apreciated. this is the first time operateing a pellet stove for me and im clueless. thanks..