Roof top unit (rtu)— 1 or 2 heat and 1 or 2 cool, Roof top unit (rtu)— 1 or, 2 heat and 1 or 2 cool 7 – KMC Controls BAC-14xx63 Series FlexStat User Manual
Page 7: 2 heat and 1 or 2 cool

BAC-12xx63/13xx63/14xx63 Series FlexStat
7
Installation Guide, Rev. C
STE-1451 Outside Air Temp. Sensor
STE-1416 Duct Averaging Temp. Sensor
MEP-5372/7252/7552/7852 Fail-Safe Actuators
XEE-6311-075 or XEE-6311-100 Transformer
IF BOTH RC AND RH TERMINALS ARE PRESENT:
WIRE RC TO SC 1-3 AND RH TO SC 4-6.
IF ONLY ONE “R” TERMINAL IS PRESENT:
WIRE BOTH SC 1-3 AND SC 4-6 TO R.
RTU 2H/2C LAYOUT
CSE-1102 Air Differential
Pressure Switch
NOTE: EITHER FAN STATUS (FST) OR
DISCHARGE AIR TEMP (DAT) CAN
BE USED ON IN2, BUT NOT BOTH.
STE-1402 Duct
Sensor, Type III
Roof Top Unit (RTU)—
1 or
2 Heat and 1 or 2 Cool
Output
Terminals
Typical Terminal
Codes
RTU Output Connections
(1 or 2 H and 1 or 2 C)
BACnet
Objects
Analog 9
Outside Air Damper (OAD/RTD)*
AO9
GND
Ground
(for analog output terminals 7–9)
Analog 8
AO8
Analog 7
AO7
Relay 6
BO6
SC 4–6
RH/R
24 VAC (for relay terminals 4–6)
Relay 5
W2
Heat 2 (Optional)
BO5
Relay 4
W1
Heat 1
BO4
Relay 3
Y2
Cool 2 (Optional)
BO3
SC 1–3
RC/R
24 VAC (for relay terminals 1–3)
Relay 2
Y1
Cool 1
BO2
Relay 1
G
Fan
BO1
*If optional Outside Air Damper is used, must also have MAT/OAT inputs.
APPLICATION
DEGREES SCALE: °F
APP:
OPT: 1H/1C
ADDITIONAL SETUP
ROOF TOP
ADDITIONAL SETUP
DAMPER
FAN
HUMIDITY
OPTIMUM START
SENSORS
Input Terminals
RTU Input Connections
BACnet Objects
IN9
Opt. Remote CO
2
Sensor*
AI9
IN8
AI8
IN7
Opt. Remote Temp. Sensor*
AI7
IN4
Opt. Outside Air Temp. (OAT)**
AI4
IN3
Opt. Mixed Air Temp. (MAT)**
AI3
GND
Ground
IN2
Optional FST or DAT*
AI2
*Fan Status (FST), Discharge Air Temperature (DAT), and (not shown
on the diagram) remote temp./CO
2
sensors are optional inputs. Set
pull-up resistor switch positions appropriately (see the Input
Connections section).
**When using the optional Outside Air Damper, MAT/OAT inputs must
also be connected.