Airedale Ultima Remote Air Cooled 75kW - 450kW - Manual (Page 8)

ULTIMA
™ REMOTE AIR COOLED
Chillers
8
Chillers
Technical Manual : Part No 6259485 V1.6.0_07_2014
General Description
STANDARD FEATURES
Refrigeration
Each refrigeration circuit is supplied with the following:

Full operating charge of R407C

Electronic expansion valve

Liquid line ball valve

Discharge line ball valve

Large capacity filter drier with replaceable cores

Liquid line sight glass

Low pressure switch with manual reset via microprocessor controller

High pressure switch with manual reset

Suction and liquid pressure transducers

Pressure relief valve with integral rupture disc and indicator gauge
Controls microprocessor controller can provide 4-6 stages of capacity control,
dependent upon model type, as standard. The controller incorporates full Building
Management System capabilities, full details can be found in the
Controls section.
Electrical
Dedicated weatherproof electrical power and controls panels are situated at the end of
the unit and contain:

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

Separate, permanent supply for controls/trace heating, 230v/50Hz/1ph

The electrical power and control panel is wired to the latest European standards
and codes of practice

Separate door locking electrical isolation for each mains compartment
OPTIONAL EXTRAS – ENERGY SAVING
Power Factor Correction When applied to the motors of each compressor, the compressor power factor is
controlled to a minimum operating value of 0.95 at the full operating capacity. This
satisfies many supply authorities that may impose surcharges on equipment with power
factor less than 0.95.