Airedale OptiChill FreeCool 500kW - 1365kW - Manual (Page 118)

OptiChill Freecool
Active Cabinet Exhaust
Chillers
118
Chillers
Technical Manual : 7197700 v1.2.0. 02_2013
Installation Data
Interconnecting Wiring
OFC
L1  
Mains incoming supply 400V/3PH/50Hz
L2  
L3  
PE  
L4  
Separate Permanent Supply 230V / 1PH +N / 50Hz N1   (1)
PE  
L4   External Trace Heating Connections
N1   230V/500W max
502   (2) Remote Pump Interlock 24VAC
507  
502   (2) Evaporator Pump Water Flow Switch 24VAC
505  
502   Unit Remote On/Off 24VAC
504  
502   Setback Setpoint Temperature switch
506  
581   Non-
Critical
Alarm
Volt Free Common Alarm
580   Volt Free Alarm N/O
582   Volt Free Alarm N/C
591  
Critical
Alarm
Volt Free Common Alarm
590   Volt Free Alarm N/O
592   Volt Free Alarm N/C
RX-/Tx-  
RX+/Tx+   IN
GND  
Network Connections
RX-/Tx-  
RX+/Tx+   OUT
GND  
CAUTION (1) A separate permanent supply ensures that essential items such as crankcase
heaters / trace heating are energised at all times. Failure to do may cause unit
malfunction.
(2) MUST be directly wired to the chiller to validate warranty.