TURBOCHILL Chillers
Chillers
24
Installation Manual : 6703052 05/2008
Installation Data
ELECTRICAL
Please refer to the electrical wiring diagrams provided for installation.
IMPORTANT
ALL work MUST be carried out by technically trained competent personnel.
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.
•
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
General
•
Avoid large voltage drops on cable runs, particularly low voltage wiring
CAUTION
The Emergency Stop MUST NOT be used to stop the chiller other than in the event
of an emergency.
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, locally isolated, permanent single phase and neutral supply
MUST BE FITTED for the compressor oil heater, evaporator trace heating and
control circuits, FAILURE to do so will INVALIDATE WARRANTY.
Ensure correct phase rotation.
Unit controls supply is supported by an on board UPS to ensure control operation
is maintained in the event of a system shut down in a power failure situation.
Power will be maintained until mains power is reinstated for a maximum period of
10 minutes.
Refer also to
Interlocks & Protection
, on page 21.
