3
The cover photograph is for illustrative purposes only and is not part of any offer for sale or contract.
12 - WATER CONNECTIONS .................................................................................................................................................... 32
12.1 - Operating precautions and recommendations .................................................................................................................. 32
12.2 - Hydronic connections .......................................................................................................................................................... 33
12.3 - Frost protection .................................................................................................................................................................... 33
12.4 - Protection against cavitation (option 116) ........................................................................................................................ 33
13 - NOMINAL SYSTEM WATER FLOW CONTROL ......................................................................................................... 36
13.1 - Units without hydronic module .......................................................................................................................................... 36
13.3 - Units with hydronic module and variable-speed pump - pressure differential control ............................................... 37
13.4 - Units with hydronic module and variable-speed pump - temperature difference control .......................................... 38
13.5 - Plate heat exchanger pressure drop (including internal piping) - units without hydronic module ............................ 39
13.6 - Pump pressure/ow rate curve - units with hydronic module (xed-speed or variable-speed pump, 50 Hz) ........... 39
13.7 - Available external static pressure - units with hydronic module (xed-speed or variable-speed pump, 50 Hz) ...... 40
14 - START-UP ...............................................................................................................................................................................41
14.1 - Preliminary checks ............................................................................................................................................................... 41
14.2 - Actual start-up ...................................................................................................................................................................... 41
14.3 - Operation of two units in master/slave mode ................................................................................................................... 41
14.4 - Supplementary electric resistance heaters ........................................................................................................................ 42
15 - MAJOR SYSTEM COMPONENTS ................................................................................................................................... 43
15.1 - Compressors.......................................................................................................................................................................... 43
15.2 - Lubricant ............................................................................................................................................................................... 43
15.3 - Air evaporator/condenser ................................................................................................................................................... 43
15.4 - Fans ........................................................................................................................................................................................ 43
15.5 - Electronic expansion valve (EXV) .................................................................................................................................... 43
15.6 - Moisture indicator ................................................................................................................................................................ 43
15.7 - Filter drier ............................................................................................................................................................................. 43
15.8 - Water evaporator/condenser ............................................................................................................................................... 44
15.9 - Refrigerant ............................................................................................................................................................................ 44
15.10 - High-pressure safety switch .............................................................................................................................................. 44
15.11 - Storage tank ........................................................................................................................................................................ 44
15.12 - Four-way valve .................................................................................................................................................................... 44
15.13 - Control box ......................................................................................................................................................................... 44
16 - OPTIONS ................................................................................................................................................................................ 45
17 - SPECIFIC DETAILS FOR UNITS WITH A FAN WITH AVAILABLE STATIC PRESSURE (30RQSY) .........46
18 - PARTIAL HEAT RECLAIM USING DESUPER-HEATERS (OPTION 49) ...........................................................46
18.1 - Physical data, 30RQS/30RQSY units with partial heat reclaim using desuperheaters (option 49) ........................... 46
18.2 - Installation and operation of the heat reclaim with desuperheater option ................................................................... 47
18.3 - Installation ............................................................................................................................................................................ 48
18.4 - Control conguration with the desuperheater option ..................................................................................................... 48
18.5 - Operating limits .................................................................................................................................................................... 48
19 - BRINE OPTION (OPTION 5B & OPTION 6B) ............................................................................................................. 48
19.1 - Frost protection .................................................................................................................................................................... 48
20 - STANDARD MAINTENANCE ......................................................................................................................................... 49
20.1 - Level 1 maintenance ............................................................................................................................................................ 49
20.2 - Level 2 maintenance ............................................................................................................................................................ 50
20.3 - Level 3 (or higher) maintenance ........................................................................................................................................ 50
20.4 - Tightening torques for the main electrical connections ................................................................................................... 51
20.5 - Tightening torques for the main bolts and screws ............................................................................................................ 51
20.6 - Air heat exchanger ............................................................................................................................................................... 51
20.7 - Water heat exchanger maintenance ................................................................................................................................... 51
20.8 - Refrigerant volume .............................................................................................................................................................. 52
20.9 - Characteristics of R-410A ................................................................................................................................................... 52
21 - START-UP CHECKLIST FOR 30RQS/30RQSY HEAT PUMPS (USE FOR JOB FILE) ......................................53
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