Carrier 48EJ Gas Heater User Manual


 
LEGEND
CCN Carrier Comfort Network
COM Common
D—Diode
LED Light-Emitting Diode
N.C. Normally Closed
N.O. Normally Open
R—Relay
SIO Serial Input/Output
SW Switch
T—Terminal
Fig. 16 Control Board Diagram
*Where X is the unit control software version number.
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