2-Pipe 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
BLK
To
next RED
controller
SHLD
STE-1455
Water Supply
Temperature Sensor
CSE-1102
Fan Status
(Optional)
C
NC
Condensate Float
Switch (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 GND 7-9
(optional)
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 Low Speed/Mod Fan Start
RLY2 = Fan Medium Speed
RLY3 = Fan High Speed
RLY4 = On/Off Valve
RLY5 = On/Off Aux Heat
OUT7 = Modulating Valve
OUT8 = Modulating Aux Heat
OUT9 = Fan Speed
IN2 = Remote Sensor
IN3 = Discharge Air Temperature
IN5 = Condenser Overflow
IN6 = Fan Status
IN7 = Water Supply Temperture Sensor
NOTES:
1. Wire modulating heating/cooling,
fan speed and/or on/off
heating/cooling and multi-speed fan
as desired.
2. See www.kmccontrols.com for
additional details.
N
Modulating Modulating
Aux Heat Valve
(Optional) (Optional)
Set Failsafe Set Failsafe
direction to fail direction to fail
valve appropriately. valve appropriately.
~ ~
+ +
NOTE: ENSURE
WIRING TO
CONTROLLER IS
24VAC ONLY!
Modulating Fan Three Speed
Speed (Optional) Fan (Optional)
On/Off
On/Off
Valve
Aux Heat
(Optional)
(Optional)
~ ~
L M H
NOTE: ENSURE
WIRING TO
CONTROLLER IS
24VAC ONLY!