Carrier Aquaforce 30XA302 Installation, Operation And Maintenance Instructions

Also see for Aquaforce 30XA Series: Installation instructions Operation instructions User guide

Contents

3The illustrations on the front cover and inside this document are for illustrative purposes only and not part of any offerfor sale or contract.7 - WATER CONNECTIONS ...................................................................................................................................................... 327.1 - Operating precautions ........................................................................................................................................................... 327.2 - Victaulic water connections................................................................................................................................................... 337.3 - Flow control ............................................................................................................................................................................ 347.4 - Evaporator water box bolt tightening.................................................................................................................................. 347.5 - Frost protection ...................................................................................................................................................................... 347.6 - Operation of two units in master/slave mode (option 58)................................................................................................. 347.7 - Pump characteristics .............................................................................................................................................................. 358 - FREE-COOLING OPTION (OPTION 118A).................................................................................................................... 368.1 - Physical data, 30XA units with free-cooling option (option 118A) ................................................................................. 368.2 - Operating limits ...................................................................................................................................................................... 368.3 - Operation ................................................................................................................................................................................ 369 - HEAT RECLAIM CONDENSER OPTION (OPTION 50) ............................................................................................. 379.1 - Physical data, 30XA units with heat reclaim condenser option........................................................................................ 379.2 - Dimensions, clearances .......................................................................................................................................................... 379.3 - Condenser location ................................................................................................................................................................ 419.4 - Condenser water connections ............................................................................................................................................... 419.5 - Operating limits for stable operation (no mode changeover) .......................................................................................... 419.6 - Operating limits for changeover between modes .............................................................................................................. 429.7 - Flow control ............................................................................................................................................................................ 429.8 - Heat reclaim operation .......................................................................................................................................................... 429.9 - Condenser pump selection .................................................................................................................................................... 429.10 - Frost protection .................................................................................................................................................................... 4310 - FANS WITH AVAILABLE PRESSURE (OPTION 10) ................................................................................................. 4311 - MAJOR SYSTEM COMPONENTS AND OPERATION DATA ................................................................................... 4311.1 - Direct-drive twin-screw compressor with variable capacity slide valve ........................................................................ 4311.2 - Pressure vessels..................................................................................................................................................................... 4311.3 - High-pressure safety switch ................................................................................................................................................ 4411.4 - Condensers ............................................................................................................................................................................ 4411.5 - Fans ........................................................................................................................................................................................ 4411.6 - Electronic expansion valve (EXV) .................................................................................................................................... 4511.7 - Moisture indicator ................................................................................................................................................................ 4511.8 - Filter drier ............................................................................................................................................................................. 4511.9 - Sensors ................................................................................................................................................................................... 4511.10 - Service valve (option 92) ................................................................................................................................................... 4511.11 - Power factor correction capacitors (option 231) ............................................................................................................ 4512 - MAIN OPTIONS.................................................................................................................................................................... 4713 - STANDARD MAINTENANCE .......................................................................................................................................... 4913.1 - Level 1 maintenance ............................................................................................................................................................ 4913.2 - Level 2 maintenance ............................................................................................................................................................ 4913.3 - Level 3 (or higher) maintenance ........................................................................................................................................ 4913.4 - Tightening torques for the main electrical connections ................................................................................................... 5013.5 - Tightening torques for the main bolts and screws ............................................................................................................ 5013.6 - Condenser coil ...................................................................................................................................................................... 5013.7 - Evaporator maintenance ..................................................................................................................................................... 5213.8 - Compressor maintenance .................................................................................................................................................... 5213.9 - Precaution for compressor power supply bus bar connection ........................................................................................ 5213.10 - Check of power factor correction capacitors .................................................................................................................. 5214 - START-UP CHECKLIST FOR 30XA LIQUID CHILLERS (USE FOR JOB FILE) ............................................... 53