
Introduction
14
Chillers
DeltaChill
TM
DeltaChill Technical Manual 9758541 V1.1_06_2020
Refrigeration
Features
DCCxxxDR
DCCxxxDX
DCFxxxDR
DCFxxxDX
DCCxxxTR
DCCxxxTX
DCFxxxTR
DCFxxxTX
Refrigeration
Full Operating Charge of R32
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Scroll Compressor Arrangement
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Dual Refrigeration Circuits
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– – – –
Triple Refrigeration Circuits
– – – –
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R32 Optimised Evaporator
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Microchannel Condenser Coils with e-coat
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Ventilated Compressor Enclosure
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Electronic Expansion Valves
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Liquid Line Sight Glass
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Liquid and Discharge Line Ball Valve
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Large Capacity Filter Drier
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Manual Reset High Pressure Switch
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Auto Reset Low Pressure Switch (LP Via Microprocessor)
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Suction and Liquid Pressure Transducers
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Compressor Minimum Differential Protection
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Dual Maintainable Pressure Relief Valve
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Refrigerant Leak Detection
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FreeCooling Capability
– –
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– –
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Standard Features
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Optional Features
–
Features Not Available
Compressor
Scroll compressors comprising:
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Internal motor protection
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Internal pressure relief
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Non return valve
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External discharge temperature protection
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Oil sight glass
A liquid line sight glass is fitted to give an indication of the state of the refrigerant within the system. If the sight glass
becomes yellow it’s an indication that the filter drier requires changing. Each Tandem / Trio set has an oil equalisation
line. The compressors are mounted to the rigid galvanised heavy duty sub-frame with the use of vibration reducing
isolation.
Compressor Staging
The sequence of the compressor staging has been engineered to optimise the units ESEER performance.
R32 Optimised Evaporator
The R32 optimised evaporator allows for effective heat transfer between media. Each heat exchanger is insulated with
closed cell polyurethane foam to Class 1 fire rating. A heater is fitted to each evaporator and will protect against freezing
in ambient temperatures as low as 30°C, subject to the freeze protection policy. Internal water pipework is trace heated
and connections for external trace heating are available.
Brazed plate evaporators use a pad heater and the shell and tube evaporators utilise immersion heaters.
Condenser Coils
Large surface area coils utilise micro channel coil technology and are ideally positioned to optimise airflow and heat
transfer.