Carrier 50EY, 50EJ, 50EW, 50EK installation instructions Ccn, Com, Sio

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		LEGEND
CCN	Ð Carrier Comfort Network		R	Ð Relay
COM	Ð Common		SIO	Ð Serial Input/Output
D	Ð Diode		SW	Ð Switch
N.C.	Ð	Normally Closed	T	Ð Terminal
N.O.	Ð	Normally Open

*Where X is the unit control software version (1 or 2).

Fig. 12 Ð Control Board Diagram