The new generation of the Carrier 06T screw compressors benefits from Carrier’s long experience in the development of twin-rotor screw compressors. The compressor is equipped with bearings with oversized rollers, oil pressure lubricated for reliable and durable operation, even at maximum load. A variable control valve controlled by the oil pressure permits infinitely variable cooling capacity. This system allows optimal adjustment of the compressor cooling capacity and ensures exceptionally high stability of the chilled water leaving temperature.
Among the other advantages: if a fault occurs e.g. if the condenser is fouled or at very high water temperature, the compressor does not switch off, but continues operation with a reduced capacity (unloaded mode). The silencer in the discharge line considerably reduces discharge gas pulsations for much quieter operation. The condenser includes an oil separator that minimises the amount of oil in circulation in the refrigerant circuit and redirects it to the compressor function.
Touch Pilot Control
Touch Pilot control, 5” user interface
The 30XW is equipped with an RS485 serial port that offers multiple remote control, monitoring and diagnostic possibilities. Carrier offers a vast choice of control products, specially designed to control, manage and supervise the operation of an air conditioning system. Please consult your Carrier representative for more information. The following commands/visualisations are possible from remote connection: - Condenser pumps control: a digital input allows veriﬁcation of condenser water ﬂow (the ﬂow switch must be supplied by the installer) - Start/stop of the machine - Dual set-point management: through a dedicated contact is possible to activate a second set-point (example: unoccupied mode) - Demand limit setting: to limit the maximum chiller capacity to a predeﬁned value - Operation visualization: indication if the unit is operating or if it's in stand-by (no cooling load) - Alarm visualization.
New innovative smart control features: - An intuitive and user-friendly, coloured, 5'' interface (7" optional) - Direct access to the unit's technical drawings and the main service documents - Screen-shots with coincisive and clear information in local languages - Complete menu, customised for different users (end user, service personnel and Carrier-factory technicians) - Easy access to the controller box with inclined touch screen mounting to ensure legibility under any lighting conditions - Safe operation and unit setting: password protection ensures that unauthorised people cannot modify any advanced parameters - Simple and "smart" intelligence uses data collection from the constant monitoring of all machine parameters to optimise unit operation. Energy management: - Internal time schedule clock controls chiller on/off times and operation at a second set-point - The DCT (Data Collection Tool) records the alarms history to simplify and facilitate service operations.
Remote management (EMM option)
The Energy Management Module offers extended remote control possibilities: - Room temperature: permits set-point reset based on the building indoor air temperature (with Carrier thermostat) - Set point reset: ensures reset of the cooling set-point based on a 4-20 mA or 0-10 V signal - Demand limit: permits limitation of the maximum chiller power or current based on a 0-10 V signal - Demand limit 1 and 2: closing of these contacts limits the maximum chiller power or current to two predeﬁned values - User safety: this contact can be used for any customer safety loop; opening of the contact generates a speciﬁc alarm - Ice storage end: when ice storage has ﬁnished, this input permits return to the second set-point (unoccupied mode) - Time schedule override: closing of this contact cancels the time schedule effects - Out of service: this signal indicates that the chiller is completely out of service - Chiller capacity: this analogue output (0-10 V) gives an immediate indication of the chiller capacity - Alert indicatio