Roof Top Units
HA / 34 /45 /52 /61 / 75 / 89 / 110 RC
Roof Top Unit
23
12 V
GND
1
2
ALARM
24V
C
RT
ON/OFF
ı
12 V
GND
1
2
RS485
NOTES
1. The BMS must be configured to send local
temperature. This is done by selecting 1 unit
and LCL in the set-up routine.
2. Shielded cable is recommended for this control.
The RS485 communication wiring must be
twisted pair. Control wiring must be kept
separate from power wiring.
3. An “RT” or “Cont” alarm may appear in initial
start up. A signal from BMS will clear this
alarm.
BASIC SENSOR AND SETPOINT CONTROL OPTIONS FOR
SINGLE AND TWO STAGE UNITS WITH CAC CONTROLLER
U BMS CONTROLLER
CAC PCB
TERMINAL NUMBERS
U
U
