Microprocessor Controller for DOAS
9
®
Medium Controller Overview
C1
NO1
NO2
NO3
C1
C4
NO4
NO5
NO6
C4
C7
NO7
C7
NO8
C8
NC8
NO12
C12
NC12
NO13
C13
NC13
C9
NO9
NO10
NO11
C9
G
G0
U1
U2
U3
GND
+VDC
+V
term
GND
+5 V
REF
U4
GND
U5
GND
VG
VG0
Y1
Y2
Y3
Y4
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
IDC1
U6
U7
U8
GND
ID9
ID10
ID11
ID12
IDC9
ID13H
ID13
IDC13
ID14
ID14H
J1
J24
J2
J3
J4
J5
J7
J8
J20
J21
J14
J10
J13
J12
J22
J16
J17
J18
J15
J6
J19
NO14
C14
NC14
NO15
C15
NC15
C16
NO16
NO17
NO18
C16
ID15H
ID15
IDC15
ID16
ID16H
Y5
Y6
ID17
ID18
IDC17
U9
GND
U10
GND
dr
a
c
S
M
B
dr
a
c
s
u
B
dl
ei
F
J23 FBus2
J11 pLAN
J25
BMS2
J26
FBus2
4321
High Pressure Switch Circuit A
Supply Fan Proving
Occupied/Unoccupied Input
Low Pressure Switch Circuit A
Unit On/Off Input
OA/RA Damper End Switch
Cooling Analog Output
Hot Gas Reheat Analog Output
Condenser Fan Circuit A or Heating Analog Output
24VAC for Analog Outputs
Outdoor Relative Humidity Sensor
Supply Fan VFD Output
Outdoor Air Damper Output
Refrigerant Pressure Circuit A
Supply Discharge Air Temperature
Sensor B1, B2, B3 Commons
After Cold Coil Temperature Sensor
Outdoor Air Temperature Sensor
24VAC to Controller
Stagged Compressor 1
24 VAC When Unit On
Stagged Compressor 3
Stagged Compressor 2
Stagged Compressor 4
24 VAC from Supply Fan Proving
Economizer Mode/Output to Dampers
24 VAC
Alarm Dry Contact
Condenser Fan VFD Start
Exhaust Fan Proving
Dirty Filter Input
Wheel Rotation Alarm
Freeze Stat Input
Condenser Fan Stage 2 Start
Condenser Fan Stage 3 Start
Inverter Compressor E-Stop (VSC)
Refrigerant Pressure Circuit B
Condenser Fan Circuit B or Heating Analog Output
High Pressure Switch Circuit B
Low Pressure Switch Circuit B
Condensate Drain Pan Switch
Remote Start Input
Optional BACnet IP, Modbus TCP, Web UI, Ethernet Connections
Remote Display
• Six
conductor
RJ25
cable
• Connects
to
J10
Optional LonWorks cards are
located in BMS Card port.
Optional Modbus RTU/BACnet MSTP connections
are made to the J26 FBus2 terminal.