Carrier Yileng - Shanghai, China
6.6 - System minimum water volume .................................................................................................................... 29
6.7 - Evaporator water flow rate ............................................................................................................................. 30
6.8 - Evaporator pressure drop curve ................................................................................................................... 31
7 - WATER CONNECTIONS ............................................................................................................................. 33
7.1 - Operating precautions .................................................................................................................................... 33
7.2 - Victaulic water connections ........................................................................................................................... 35
7.3 - Flow control ...................................................................................................................................................... 36
7.4 - Evaporator water box bolt tightening ............................................................................................................ 36
7.5 - Frost protection ................................................................................................................................................ 36
7.6 - Operation of two units in master/slave mode .............................................................................................. 37
8- MAJOR SYSTEM COMPONENTS AND OPERATION DATA .................................................................... 37
8.1 Direct-drive twin-screw compressor with variable capacity slide valve ..................................................... 37
8.2 - Pressure vessels ............................................................................................................................................. 38
8.3 - High-pressure safety switch........................................................................................................................... 40
8.4 - Air side exchanger .......................................................................................................................................... 40
8.5 - Fan..................................................................................................................................................................... 40
8.6 - Electronic expansion valve (EXV) ................................................................................................................. 40
8.7 - Moisture indicator ............................................................................................................................................ 40
8.8 - Filter drier ......................................................................................................................................................... 40
8.9 - Sensors ............................................................................................................................................................. 40
8.10 - 4-way valve .................................................................................................................................................... 40
9 – OPTIONS AND ACCESSORIES ................................................................................................................. 41
10 - STANDARD MAINTENANCE .................................................................................................................... 41
10.1 - Level 1 maintenance .................................................................................................................................... 41
10.2 - Level 2 maintenance (see note) ................................................................................................................. 42
10.3 - Level 3 (or higher) maintenance (see note) .............................................................................................. 42
10.4 - Tightening torques for the main electrical connections ........................................................................... 42
10.5 - Tightening torques for the main bolts and screws .................................................................................... 43
10.6 – Air side exchanger........................................................................................................................................ 43
10.7 - Evaporator maintenance .............................................................................................................................. 44
10.8 - Compressor maintenance ............................................................................................................................ 44
10.9 - Precaution for compressor power supply bus bar connection ............................................................... 45
11 – START-UP CHECK LIST FOR 30XQ HEAT PUMP CHILLERS (USE FOR JOB FILE) ........................ 46
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