Specifications

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Communication / B.M.S.
CTU2500/4500 Main Controller – BACnet/Modbus Protocol
Wiring Diagrams
CTU2500-AC-SUPER-02-WET / CTU4500-AC-SUPER-02-WET
N L
DO6 DO7 DO8
Main Supply
230VAC
N
N
N N
1 2 3 7 8
Room panel
(option)
DO3 DO4 DO5X1 DO1 DO2V1
Not in use
Low Medium High
Fan (3A)
T1 0 T2 0 T3 0 A B
Communication
BACnet protocol
Input
“N”
AO1 0 AO2
Compressor 1 (0.5A) Compressor 2 (0.5A)
H.Pump/H.Element 1 (0.5A)
Outdoor Fan/H.El. 3 (0.5A) H.Element 2 (0.5A)
DI1 0 DI3 0DI2 DI5 0DI4 DI7 0DI6 DI8 12V
12Vdc supply voltage – option
(30mA max)
T1 - Return air sensor
T2 – Outdoor sensor
T3 -Indoor Sensor
Occupancy sensor
Fault 2 – Window contact (N.C.)
Fault 3 – Flow sensor (N.C.)
Digital input 1 – Indication only
Digital input 4 – Compressor delay
Digital input 5 – Fan speeds
Digital input 6 – Heat pump config.
Digital input 7 – Indication only
Feeding to
outputs
“WET”
CTU2500-3S-FC-SUPER / CTU4500-3S-FC-SUPER