BAC-120063CW-ZEC FlexStat
4
Installation and Configuration Guide, Rev. G
Heat Pump Unit (HPU)
Output
Terminals
Typical
Terminal
Codes
HPU Output Connections
BACnet
Objects
Analog 9
O. A. Damper (Optional)
AO9
GND
Ground
(for Analog Output terminals 7–9)
Analog 8
Heat or Cool Valve (Optional)
AO8
Analog 7
Static Pressure Setpoint (Optional)
AO7
Relay 6
W2/E
Emergency Heat (Optional)
BO6
SC 4–6
R
24 VAC (for Relay terminals 4–6)
Relay 5
W
Auxiliary Heat (Optional)
BO5
Relay 4
Y2
Compressor 2 (Optional)
BO4
Relay 3
Y1
Compressor 1
BO3
SC 1–3
R
24 VAC (for relay terminals 1–3)
Relay 2
O/B
Reversing Valve
(see O/B Note in schematic)
BO2
Relay 1
G
Fan
BO1
NOTE:
Connections above are for firmware R2.0.0.4 and later. Earlier
firmware had the optional static pressure setpoint on Analog Output
9
instead of Analog Output
7
, and it did not have the heating/cooling
coil valve option (Analog Output 8) or outside air damper (economizer)
option (Analog Output 9).
APPLICATION
DEGREES SCALE: °F
APP:
OPT: 1 STAGE
ADDITIONAL SETUP
ZONE
HEAT PUMP
1 or 2 Compressors with Auxiliary and Emergency Heat
NOTE: Although typical terminal code letters are
shown, check the schematics of your unit
for wiring details!
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.
Illustration 4—HPU Application Connections
Input
Terminals
HPU Input Connections
BACnet
Objects
IN9
Static Pressure Feedback (Optional)
AI9
IN8
(Unused in this application)
AI8
IN7
(Unused in this application)
AI7
IN4
(Unused in this application)
AI4
IN3
(Unused in this application)
AI3
GND
Ground
IN2
DAT
*
AI2
*NOTE:
The DAT sensor is configured for IN2 in the ADVANCED >
APPLICATION > ADDITIONAL SETUP > SENSORS menu.
XEE-6111-050 or XEE-6112-50 Transformer
NOTE: Wire to “O” terminal if
reversing valve is energized in
cooling mode; wire to “B”
terminal if reversing valve is
energized in heating mode.
STE-140x Duct Sensor, Type III
From
Previous
Network
Device
Optional Network
HPU
Terminals
TERMINALS
To
Next
Network
Device
Optional Static Pressure Reading/Setpoint from/to CSP-4702
AO7
IN9
GND
Optional Heating/Cooling Coil Valve
GND
AO8
Optional Outside Air Damper
GND
AO9
