... stage automatic anti-freezing, built-in self-diagnosable system, and is controlled by microcomputer.Application to hotels, ... the technical manufacture.The unit is suit for installing in outspace such as roof, floor and ... VMN(A)068U,VMN(A)068M,VMN(A)088M,VMN(A)108M,VMN(A)180M,VMN(A)250M,VMN(A)320M,VMN(A)380M ... the reliability for a less time of turning on/off than a single compressor system It can decrease ...