Not required., Copper / aluminium condenser coil with acrylic lining - CCCA., Condenser coil with Aluminium Energy Guard DCC treatment - CCCA1., Flush hydraulic connections - ABU., Hydropack on cold use side with 1 on-off pump - 1PMCS., Hydropack on cold use side with 1 inverter pump - 1PMCSV., Hydropack cooling side with 1 + 1 on-off pump - 1+1PMCS., Hydropack cooling side with 1 + 1 inverter pump - 1+1PMCSV., Hydropack on hot use side with 1 on-off pump - 1PMHS., Hydropack on hot use side with 1 inverter pump - 1PMHSV., Hydropack heating side with 1 + 1 on-off pump - 1+1PMHS., Hydropack heating side with 1 + 1 inverter pump - 1+1PMHSV., Serial communication module for Modbus supervisor - CMSC0., Serial communication module for LonWorks supervisor - CMSC10., Serial communication module for BACnet-IP supervisor - CMSC11., Soundproofing paneling of the pumping unit - PFGP., Steel mesh strainer on the water side - IFWX., Remote control via microprocessor control - RCMRX., Mains power supply - PSX., Refrigerant leak detector - RPR., Anti-vibration mount support - AVIBX., Anti-seismic spring antivibration mounts - AMSMX., Finned coil protection grill - PGFC., Anti-hail protection grilles - PGCCH., Anti-hail protection grilles - PGCCHX., Condensate collection pan with electric heater - TCDC., IoT industrial module for cloud based interoperability and services - IOTX.