Airedale OptiChill FreeCool 500kW - 1365kW - Manual (Page 10)

OPTICHILL
™
Chillers
10
Chillers
Technical Manual : 6530166 F 03/2012
General Description
STANDARD FEATURES
Controls As standard, the microprocessor controller can provide 8 stages of
capacity control.
Optionally, the controller is designed to provide capabilities for;

Building Management Systems (BMS)

Sequencing (Master/Slave and Run/Standby)
to meet all your system requirements, please specify at order.
For further details, refer to Controls , on page 22.
Electrical A weatherproof electrical power and controls panel is situated at the end of the unit
and contains:

Individual mains power compartments for each
refrigeration circuit
refer to
Interconnecting wiring ,
on page 69

Separate door locking electrical isolation for each mains
compartment

Dedicated bus-bar chamber for connection of incoming 3-
phase and earth mains power supply,

Emergency Stop fitted to controls compartment door

Separate, fully accessible, controls compartment, allowing adjustment of control set
points whilst the unit is operational

Circuit breakers for protection of all major unit components

Phase rotation relay incorporating phase loss protection (compressor module)
The electrical power and control panel is wired to the latest European standards and
codes of practice.
Mains supply is 3 phase and a neutral is not required, refer to Interconnecting wiring , on
page 69.
Separate 230V permanent supply is required for the controls and safety features.
Electrical terminals for external evaporator pipework trace heating (230V/500W)
are provided.
CAUTION A fused and isolated electrical supply of the appropriate phase, frequency and
voltage should be installed.