Chillers ULTIMA COMPACT - Airedale International Air Conditioning

ULTIMA COMPACT Chillers
Installation Data
ELECTRICAL DATA
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.
CAUTION
CAUTION
CAUTION
Interlocks & Protection
CAUTION
CAUTION
• Ensure correct phase rotation.
• A fused and isolated electrical supply of the appropriate phase, frequency and
voltage should be installed.
• The control voltage to the interlocks is 24V. Always size the low voltage interlock and
protection cabling for a maximum voltage drop of 2V.
Chillers
22 Installation & Maintenance : 903-129 IM E 10/04/C
• Wires should be capable of carrying the maximum load current under non-fault
conditions at the stipulated voltage.
• Avoid large voltage drops on cable runs, particularly low voltage wiring.
• Once the connecting pipework is complete the electrical supply can be connected by
routing the cable through the appropriate casing hole and connecting the cables,
refer to the Wiring Diagram supplied with each unit.
A separately fused, locally isolated, permanent single phase and neutral supply
MUST BE FITTED for the compressor sump heater, evaporator trace heating and
control circuits, FAILURE to do so could INVALIDATE WARRANTY.
Always electrically interlock the operation of the chiller with the pump controls and water
flow switch.
These safety devices prevent the chiller operating with low water flow which can cause
serious damage.
Failure to install both safety devices will invalidate the chiller warranty.
Do not rely solely on the BMS to protect the chiller against low flow conditions.
An evaporator pump interlock and flow switch MUST be directly wired to the
chiller, refer to Interconnecting Wiring diagram.