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Chillers
TurboChill™ R1234ze Air Cooled and FreeCool
137
Chiller Technical Manual 7752785 V1.12.0_10_2018
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
561
Critical
Alarm
Volt Free Common Alarm
560
Volt Free Alarm N/O
562
Volt Free Alarm N/C
RX-/Tx-
Network Connections (Inward Connection)
RX+/Tx+
GND
RX-/Tx-
Network Connections (Outward Connection)
RX+/Tx+
GND
(UPS backup by others Direct to Control Panel Isolator)
IN
OUT
Installation Data
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.
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 and for the leak detection and ventilation systems to
work in the event of a leak being detected.
FAILURE to do so will INVALIDATE WARRANTY.
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
