KMC Controls FlexStat BAC-1xx63 Series Installation Manual page 6

Heat Pump Unit (HPU)—
1 or 2 Compressors with Auxiliary and Emergency Heat
CAUTION
Relays are for Class-2 voltages (24 VAC) only.
Do not connect line voltage to the relays!
Do not mistakenly connect 24 VAC to an
analog output ground.
XEE-6311-075 or XEE-6311-100 Transformer
MEP-5372/7252/7552/7852 Fail-Safe Actuators
CSE-1102 Air Differential
Pressure Switch
STE-1416 Duct Averaging Temp. Sensor
NOTE: WIRE TO "O" TERMINAL IF
BAC-1xx63 Series (6 Relays, 3 Analog Outputs)
STE-1402 Duct
Sensor, Type III
NOTE: EITHER FAN STATUS (FST) OR
DISCHARGE AIR TEMP (DAT) CAN
BE USED ON IN2, BUT NOT BOTH.
STE-1451 Outside Air Temp. Sensor
REVERSING VALVE IS
ENERGIZED IN COOLING
MODE; WIRE TO "B"
TERMINAL IF REVERSING
VALVE IS ENERGIZED IN
HEATING MODE.
NOTE: Although
typical
terminal
code letters
are shown,
check the
schematics
of your unit
for wiring
details.
APPLICATION
DEGREES SCALE: °F
APP:
HEAT PUMP
OPT: 1 STAGE
ADDITIONAL SETUP
NOTE: To see Humidity options in the Additional
Setup menu, select an Aux. Heat option
other than None (the default).
Input Terminals HPU Input Connections
IN4 Opt. Outside Air Temp. (OAT)*
IN3 Opt. Mixed Air Temp. (MAT)*
GND
IN2 Optional FST or DAT**
*When using optional Outside Air Damper, must also have MAT/OAT
inputs (typically 10K, Type III thermistors). Ensure pull-up resistor
switch positions are set properly—see Illustration 3 on page 2.
**Fan Status (FST) or Discharge Air Temperature (DAT) is an optional,
selectable input. Ensure pull-up resistor switch positions are set
properly (10K position) for the relay, switch, or Type III thermistor.
Typical
Output
Terminal
Terminals
Codes
Analog 9
GND
Analog 8
Analog 7
Relay 6 W2/E
SC 4–6 R
Relay 5 W
Relay 4 Y2
Relay 3 Y1
SC 1–3 R
Relay 2 O/B
Relay 1 G
*If optional Outside Air Damper is used, must also have MAT/OAT inputs.
6
HPU LAYOUT
ADDITIONAL SETUP
AUX HEAT
DAMPER
FAN
HUMIDITY
SENSORS
VALVE
BACnet Objects
Ground
HPU Output Connections
Outside Air Damper (OAD/RTD)*
Ground
(for analog output terminals 7–9)
Emergency Heat (Optional)
24 VAC (for relay terminals 4–6)
Auxiliary Heat (Optional)
Compressor 2 (Optional)
Compressor 1
24 VAC (for relay terminals 1–3)
Reversing Valve
(see O/B Note in schematic)
Fan
AI4
AI3
AI2
BACnet
Objects
AO9
(AO8)
(AO7)
BO6
BO5
BO4
BO3
BO2
BO1
Installation Guide