Wiring - KMC Controls KMCConquest FlexStat BAC-19 Series Sequence Of Operation

If controllers are to be networked
together via MS/TP, turn ON EOL switch
on the controllers at both physical ends
of the network. Connect shield wires
together and to earth ground at only one
point, but do not connect to controllers.
BLK
From
previous RED
controller
SHLD
To BLK
next
RED
controller
SHLD
CSE-1102
Fan Status
(Optional)
C
NC
STE-1451
OA Temp
(Optional)
STE-1451
Discharge Temp
(Optional)
STE-6011/13W10
Remote Temp
(Optional)
Line
H
Voltage
24VAC
Connect
controller to
network using
standard
+ B OUT9
Ethernet cable.
- A (optional) GND 7-9
IN7 OUT8
IN6 OUT7
GND RLY6
IN5 SC 4-6
IN4 RLY5
IN3 RLY4
GND RLY3
IN2 SC 1-3
COM RLY2
24 VAC RLY1
BAC-19XX63
Controller
External connections::
RLY1 = Fan Start/Stop
RLY2 = Cooling Stage 1
SC1-3 = RC
RLY3 = Cooling Stage 2
RLY5 = Heating Stage 1
SC4-6 = RH
RLY6 = Heating Stage 2
OUT7 = Modulating Cooling
OUT8 = Modulating Heating
OUT9 = Economizer
IN2 = Remote Sensor
IN3 = Discharge Air Temperature
IN4 = Outdoor Air Temperature
IN6 = Fan Status
NOTES:
1. If Econ is enabled, OAT and DAT
are required.
2. See www.kmccontrols.com for
additional details.
N
Economizer Modulating
(Optional) Heating Valve
(Optional)
Set Failsafe Set Failsafe
direction to fail direction to fail
valve appropriately. valve appropriately.
~ ~
+ +
NOTE: ENSURE
WIRING TO
CONTROLLER IS
24VAC ONLY!
Fan Start/Stop
NOTE: If there is only one "R" terminal in the
hvac unit, place a jumper between the cooling
and heating "SC" terminals on the BAC-19xx63
and wire to the hvac "R" terminal.
BASIC DCV OPERATION
(OPTIONAL)
100
0
CO2
DEADBAND
STANDARD DCV OPERATION
(OPTIONAL)
100
0
CO2 CO2 BASE CO2 BASE
BASE + 200 + 600
Modulating
Cooling Valve
(Optional)
Set Failsafe
direction to fail
valve appropriately.
~
+
On/Off
On/Off
Heating Stages
Cooling Stages
(Optional)
(Optional)
OA DMPR
ROOM
CO2
INCREASE
CO2
SETPOINT
OA DMPR
ROOM
CO2
INCREASE