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Chillers
DeltaChill
TM
DeltaChill Technical Manual 9758541 V1.1_06_2020
Installation Data
Electrical
Please refer to the electrical wiring diagrams provided for installation.
ALL work MUST be carried out by technically trained competent personnel.
General
As standard the equipment is designed for 400VAC, 3 phase, 3 wire 50Hz and a separate permanent 230VAC, 1 phase,
50Hz supply, to all relevant IEE regulations, British standards and IEC requirements.
The control voltage to the interlocks is 24V AC, always size the low voltage interlock and protection cabling for a
maximum voltage drop of 2V.
A separately fused, locally isolated permanent single phase and neutral supply must be fitted for the evaporator trace
heating, control circuits, compressor oil heater and leak detection and ventilation systems. Wires should be capable of
carrying the maximum load current under non-fault conditions at the stipulated voltage. Failure to do so will invalidate
warranty. To reduce down time, support the above supply with a UPS if possible. Ensure correct phase rotation.
Refrigeration
Before running the unit, all shut off valves must be opened. Any packaging must be carefully removed from coils.
Please ensure the removal of the transport bracket prior to operating the compressors. Failure to do so will invalidate
warranty.
Avoid large voltage drops on cable runs, particularly low voltage wiring.
The Emergency Stop MUST NOT be used to stop the chiller other than in the event of
an emergency.
CAUTION
The equipment contains live electrical and moving parts, ISOLATE prior to maintenance
or repair work.
The unit isolators DO NOT isolate the incoming mains supply, but isolate the individual
electrical panels.
Isolate REMOTELY the mains incoming supply to the BUSBAR chamber prior to maintenance or
repair work.
IMPORTANT