Airedale TurboChill FreeCool 200kW - 1830kW - Manual (Page 117)

117 Chiller Technical Manual 7525355 V1.1.0_04_2013
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Chillers TurboChill™ Air Cooled and FreeCool
TURBOCHILL
L1  
Mains Incoming Supply 400V/3PH/50Hz
(Direct to 3 Phase Isolator)
L2  
L3  
E  
L4  
Separate Permanent Supply 230V/1PH/50Hz N  
E  
L4   External Trace Heating Connections
N   240V/500W max
502  
(1) Remote Pump Interlock 24VAC
508  
502  
(1) Evaporator Pump Water Flow Switch 24VAC
506  
502  
Unit Remote On/Off 24VAC
507  
Setback Setpoint Temperature Switch 502  
510  
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-  
Network Connections (Inward Connection) RX+/Tx+  
GND  
RX-/Tx-  
Network Connections (Outward Connection) RX+/Tx+  
GND  
(Direct to Control Panel Isolator)
Interconnecting Wiring
General
As standard the equipment is designed for 400V, 3 phase, 3 wire 50Hz and a separate permanent 230V, 1 phase, 50Hz
supply, to all relevant IEE regulations, British standards and IEC requirements.
The control voltage to the interlocks is 24V, always size the low voltage interlock and protection cabling for a maximum
voltage drop of 2V.
Avoid large voltage drops on cable runs, particularly low voltage wiring.
CAUTION
A fused and isolated electrical supply of the appropriate phase, frequency and voltage should be installed.
Wires should be capable of carrying the maximum load current under non-fault conditions at the stipulated voltage.
A separately fused permanent single phase and neutral supply MUST BE FITTED for the evaporator trace heating and
control circuits,
FAILURE to do so will INVALIDATE WARRANTY.
CAUTION
ALL work MUST be carried out by technically trained competent personnel.
Isolate REMOTELY the mains incoming supply to the BUSBAR chamber prior to maintenance or repair work.
CAUTION (1) MUST be directly wired to the chiller to validate warranty.