Patent ID: 7370486

Claim:
A machine, comprising: an operator cabin; and an air-treatment system including: a cooling circuit; a first heat exchanger in thermal communication with the cooling circuit; a secondary circuit in thermal communication with the first heat exchanger, the secondary circuit operable to selectively transfer heat between the operator cabin of the machine and at least one of the cooling circuit and the first heat exchanger; at least one first heating circuit in fluid communication with the secondary circuit; a second heating circuit connected to the at least one first heating circuit, the second heating circuit having an engine, and the fluid from the at least one first heating circuit being selectively allowed to flow through the second heating circuit to impart heat to the engine; and a controller in communication with at least one of the cooling circuit, the first heat exchanger, and the secondary circuit, the controller operable to receive at least one input indicative of a desired ambient condition of the operator cabin, a current ambient condition of the operator cabin, and of at least one of a cooling circuit operation and a secondary circuit operation, and operable to change the operation of at least one of the cooling circuit and the secondary circuit when the current ambient condition of the operator cabin is outside of a desired ambient condition range.