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Connection Server Installation Manual
3.2.3. Connection of air conditioning units
Connection of air conditioning units
There are two ways of connecting air conditioning units in iMM system:
a) Direct
b) Indirect
a) Direct connection means that the air conditioning unit control protocol is implemented directly in
iMM. Currently air conditioning units of LG brand are supported; others have been worked on. We
support communication of LG air conditioning units which is marked as PI485. Any LG unit supports
that interface; it can be interconnected to application iTP via iMM.
b) Indirect connection means utilization of communication unit CoolMaster which can communicate
with different types and makers of air conditioning units (http://www.inels.cz/media/PDF-
export/download/Coolmaster_compatibility.pdf). CoolMaster is then controlled from iMM.
Interconnection is performed by means of 485/ETHERNET converter. Steps for communication
setting:
1. Connect the converter to communication interface of air conditioning unit and to ethernet.
