ALARM
UP
DOWN
ENTERMENU
LT1785
LT1785
RELAY CONTACT
RATING IS 1 AMP
MAX @ 24 VAC
RS-485 COMM
LOOP WIRE
“R” TO “R”,
“T” TO “T”,
“SHLD” TO “SHLD”
24 VAC POWER
ONLY
WARNING!
POLARITY
MUST BE
OBSERVED
OR THE
CONTROLLER
WILL BE
DAMAGED
www.aaon.com
VCCX-454
CONTROLLER
AAON P/N: ASM07503
BINARY INPUTS
BI1 = PROOF OF AIRFLOW
BI2 = DIRTY FILTER
BI3 = HOOD ON/OFF
BI4 = REMOTE OCCUPIED
BI5 = A2L AIRSTREAM LEAK DETECT
BI6 = A2L CABINET LEAK DETECT
BI7 = NOT USED
BI8 = EMERG SHUTDOWN
ANALOG INPUTS
AI1 = SPACE TEMPERATURE
AI2 = SPACE SLIDE OFFSET
AI3 = SUPPLY AIR TEMPERATURE
AI4 = RETURN AIR TEMPERATURE
AI5 = BUILDING PRESSURE
AI6 = SUPPLY AIR TEMP RESET
AI7 = OUTDOOR AIR TEMPERATURE
AI8 = NOT CONNECTED USE DUCT
STATIC CONNECTOR
LABEL P/N
G127590
DUAL
E-BUS
+24 VAC
GND
MAIN FAN
RELAY 2
RELAY 3
RELAY 4
RELAY 5
RELAY 6
RELAY 7
RELAY 8
RELAY
COMMON
BACNET +
MAIN SUPPLY FAN VFD
ECONOMIZER/WSE
MOD HEATING
FAN VFD
EXHAUST/RETURN
BACNET SHIELD
BACNET –
= SH
= R
DUCT
STATIC
10/100
ETHERNET
USB FLASH
ONLY
= T
= AO2
= AO1
= AO3
= AO4
4
5
4
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