EngA CenCon

CenCon
48
TERMINAL DESCRIPTION
Terminal
Type
Name
Description
Value
H N
Power Supply
24 Vac
GND
Ground
Connect to chassis.
LmA B
Modbus
Internal
Network
MFr AO
Modulating
Bypass Damper
Demand
Modulating output to bypass damper actuator. 0-10 Vdc
MER AO
Drive Motor
Speed Signal
Modulating output to heat wheel drive motor, heat pipe
tilt actuator, or heat plate damper actuator.
0-10 Vdc
EnH DI
Enable energy
recovery
Enable energy recovery operation. 24 Vac
Rot DI
High Speed
Enable
Input from rotation sensor. 24 Vac
CM / ByD
DO
Bypass Damper
Dry contact enable bypass damper.
24/120 Vac
CM / ERC
DO
Relay Common
Dry contact enable wheel motor starter.
24/120 Vac
LA1,2 AI
Leaving
(Supply) Air
Temperature
10k Type 2 thermistor Ohms (Ω)
EA1,2 AI
Exhaust Air
Temperature
10k Type 2 thermistor Ohms (Ω)
ALARM DESCRIPTION
Sensor Failure
Exhaust or Leaving wheel sensor open or shorted.
Defrost Active
Temperatures approaching frost temperature. Control signal reduces.