BAC-1xx63 Series (6 Relays, 3 Analog Outputs)
8
Installation Guide
4-PIPE MODULATING OPTION
(See the FCU—Other Options section on the next page for more options)
VEP-45xxB745/
VEB-43xxxBCK
Valves with
MEP-4002 0–10
VDC Actuators
XEE-6311-050 Transformer
REE-3211 Multi-Voltage Relays
FCU 4-PIPE
MODULATING 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
Fan Coil Unit (FCU)—
2 or 4 Pipe, Modulating or 2 Position
Input Terminals
FCU Input Connections
BACnet Objects
IN4
(AI4)
IN3
Supply Water Temp. (W-TMP)*
AI3
GND
Ground
IN2
Optional FST or DAT**
AI2
*Input for Supply Water Temp is typically a 10K,Type III thermistor.
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.
Output Terminals
(BAC-1xxx63C)
FCU Output Connections
BACnet
Objects
2-Pipe
4-Pipe
Analog 9
(AO9)
GND
Ground
(for analog output terminals 7–9)
Analog 8
Heat Valve,
Proportional (HTV)
AO8
Analog 7
Valve,
Proportional (VLV)
Cool Valve,
Proportional (CLV)
AO7
Relay 6
(BO6)
SC 4–6
24 VAC (for relay terminals 4–6)
Relay 5
Heat Valve,
2-Position (HTV)
BO5
Relay 4
Valve,
2-Position (VLV)
Cool Valve,
2-Position (CLV)
BO4
Relay 3
Fan 3
BO3
SC 1–3
24 VAC (for relay terminals 1–3)
Relay 2
Fan 2
BO2
Relay 1
Fan 1
BO1
*If optional Outside Air Damper is used, must also have MAT/OAT inputs.
NOTE:
Humidity
and occupan-
cy sensor
options are
dependent
on FlexStat
model.
APPLICATION
DEGREES SCALE: °F
APP:
OPT: 4–PIPE
ADDITIONAL SETUP
FAN COIL
ADDITIONAL SETUP
FAN
HUMIDITY
SENSORS
VALVE
NOTE: To see Humidity options in
the Additional Setup menu,
select the 4-Pipe option.
NOTE:
Do not use
REE-3211s
with analog
outputs!
See Output
Connections
on page 3.
