Air-cooled Screw Chiller Unit. Installation, Operation and. Maintenance Manual. Please read this manual carefully before installing and operating your chiller INSTALLATION,. OPERATION. AND MAINTENANCE MANUAL. Air-Cooled Screw Chillers. 30XA “A”. Original document. Unit with options 23A, 258 and 279. Screw liquid chillers are designed to provide safe and safety precautions contained in the chiller instructions, as .. Carrier Comfort Network® Interface . 30XA chillers are equipped with ComfortLink™ controls and electronic .. Contact your Carrier representative for instructions and software. CONTRAST.21 feb 2012 continuous operation with cold condenser water at all loads. Screw chillers Refer to Carrier System Design Manual for details regarding piping techniques. Carrier 30HXC water-cooled screw liquid chiller with R-134a refrigerant. Installation, operation and maintenance instructions .. Geared twin screw compressor . .. 30HXC and 30GX liquid chillers are designed to provide safe For application requiring operation at less than 6.8°C, contact Carrier s.a. for unit Carrier 30HXA Water-Cooled Condenserless Screw Chiller Water cooled chillers within the scope of the AHRI WCCL certification program are certified in Carrier. 30GXN,R080-528. 30HXA,HXC076-271. Air-cooled and Water-Cooled Chillers with ComfortlinkTM Controls. 50/60 Hz. Series 6 Screw Compressor Board (SCB) .. Electronic Expansion . Operation instructions) . .. 127-129.