Tandem Condensing Units

TANDEM CONDENSING UNITS

Cool Star® tandem condensing units are a simpler alternative to rack units. The oil management is replaced by a direct connection of the compressors. The cooling capacity is controlled in the range of 0-50-100 %. In the case of the Copeland Digital compressor, the units provide precise control of evaporation pressure and temperature at different loads.

The units are suitable for use in HVAC systems and for systems with multiple loads, eg. in supermarkets, food processing, manufacturing and technological facilities etc.

CoolStar

The units are designed to operate with conventional group A1 HFC refrigerant, depending on the compressor type and operating conditions. Depending on the type of refrigerant used, the range of evaporation temperatures is from -50 °C to +20 °C. For higher evaporation temperatures and / or higher ambient temperatures, the units are equipped with a larger condenser for trouble-free operation. The units are supplied with a protective inert gas fill.

Standard unit content

steel base
compressors
air-cooled condenser
liquid refrigerant receiver
rotalock valves
terminal board
dual pressure switch
individual high pressure pressure switches
differential pressure switch for semi-hermetic compressor units
pressure transmitters
discharge temperature sensor for digital compressors
piping
electrical connection

Standard compressor series

Copeland Scroll ZR, ZB, ZF, ZF EVI, Copeland Semi-Hermetic Standard, Stream
Copeland Scroll Digital ZBD and ZFD, Copeland Stream Digital compressors with continuous Capacity modulation
Bitzer

Optional accessories

electrical switchboard (remote or unit-mounted)
crankcase heater
condensing pressure control by fan cycling
fan speed control
outdoor unit cover

Non-standard design

remote air-cooled condenser
water cooled condenser
heat recovery
oil level monitoring
oil separator
suction accumulator
liquid line (filter drier, solenoid valve, sight glass)

Made-in-Drazkovice

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