Hermetic refrigeration compressor ZTW series
scrollCO2 (R744)variable-speed

hermetic refrigeration compressor
hermetic refrigeration compressor
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CO2 (R744)
Other characteristics
variable-speed, trans-critical
Refrigeration capacity

Max.: 36,000 W

Min.: 4,100 W

Suction line diameter

0.75 in

Exhaust line diameter

0.5 in


27 A, 34 A, 45 A, 56 A

Oil charge

1.2 l
(0.32 gal)

Sound level

70 dB


240 mm
(9 in)


240 mm
(9 in)


620 mm
(24 in)


58 kg
(128 lb)


Copeland™ ZTW variable speed scroll compressors are designed for use in R744 (CO2) medium temperature refrigeration systems (standstill pressure of 110bar) - suitable for CO2-transcritical systems. They allow more flexibility and high efficiency thanks to brushless permanent magnet (BPM) motor technology in combination with efficient drives. These models feature Dynamic Vapor Injection (DVI) technology, which enables a smoother and more efficient operation of CO2 booster systems in all climates while keeping costs low. Refrigerants compatibilitiesR-744 ApplicationsMedium Temperature, Transcritical Performances given at conditionsEvaporating -10°C, Gas cooler temp. 35°C, Abs. discharge pressure: 90 bar, Suction superheat 10 K (Economizer setup) Features Dynamic Vapor Injection (DVI) technology reduces booster system complexity and cost Low system maintenance costs & low operating costs in all climates Ideal for cost effective compact racks thanks to their small footprint and weight Reliable compressor, thanks to a high tolerance to liquid Low vibration level High efficiency BPM motors providing wide modulation range 20-90Hz


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