Carrier 30RQ 039 Series, Installation, Operation And Maintenance Instructions

Page: 3 / 50

3
the cover photograph is for illustrative purposes only and is not part of any offer for sale or contract.
12 - WateR ConneCtIons .................................................................................................................................................... 27
12.1 - Operating precautions and recommendations .................................................................................................................. 27
12.2 - Hydronic connections .......................................................................................................................................................... 28
12.3 - Frost protection .................................................................................................................................................................... 28
12.4 - Protection against cavitation (option 116) ........................................................................................................................ 28
13 - noMInal sYsteM WateR floW ContRol ......................................................................................................... 30
13.1 - Units without hydronic module .......................................................................................................................................... 30
13.2 - Units with hydronic module and fixed-speed pump ....................................................................................................... 31
13.3 - Units with hydronic module and variable-speed pump - pressure differential control ............................................... 31
13.4 - Units with hydronic module and variable-speed pump - temperature difference control .......................................... 32
13.5 - Plate heat exchanger pressure drop (including internal piping) - units without hydronic module ............................ 33
13.6 - Pump pressure/flow rate curve – units with hydronic module (fixed-speed or variable-speed pump, 50 Hz) .......... 33
13.7 - Available external static pressure - units with hydronic module (fixed-speed or variable-speed pump, 50 Hz) ...... 34
14 - staRt-Up ............................................................................................................................................................................... 35
14.1 - Preliminary checks ............................................................................................................................................................... 35
14.2 - Actual start-up ...................................................................................................................................................................... 35
14.3 - Operation of two units in master/slave mode ................................................................................................................... 35
14.4 - Supplementary electric resistance heaters ........................................................................................................................ 36
15 - MajoR sYsteM CoMponents ................................................................................................................................... 37
15.1 - Compressors.......................................................................................................................................................................... 37
15.2 - Lubricant ............................................................................................................................................................................... 37
15.3 - Air evaporator/condenser ................................................................................................................................................... 37
15.4 - Fans ........................................................................................................................................................................................ 37
15.5 - Electronic expansion valve (EXV) .................................................................................................................................... 37
15.6 - Moisture indicator ................................................................................................................................................................ 37
15.7 - Filter drier ............................................................................................................................................................................. 37
15.8 - Water evaporator/condenser ............................................................................................................................................... 38
15.9 - Refrigerant ............................................................................................................................................................................ 38
15.10 - High-pressure safety switch .............................................................................................................................................. 38
15.11 - Storage tank ........................................................................................................................................................................ 38
15.12 - Four-way valve .................................................................................................................................................................... 38
15.13 - Control box ......................................................................................................................................................................... 38
16 - optIons ................................................................................................................................................................................ 39
17 - speCIfIC DetaIls foR UnIts WIth a fan WIth avaIlaBle statIC pRessURe (30RQsY) ......... 40
18 – paRtIal heat ReClaIM UsIng DesUpeR-heateRs (optIon 49) .......................................................... 40
18.1 - Physical data, 30RQS/30RQSY units with partial heat reclaim using desuperheaters (option 49) ........................... 40
18.2 - Installation and operation of the heat reclaim with desuperheater option ................................................................... 41
18.3 - Installation ............................................................................................................................................................................ 42
18.4 - Control configuration with the desuperheater option ..................................................................................................... 42
18.5 - Operating limits .................................................................................................................................................................... 42
19 - BRIne optIon (optIon 5B & optIon 6B) ............................................................................................................. 42
19.1 – Frost protection .................................................................................................................................................................... 42
20 - stanDaRD MaIntenanCe ......................................................................................................................................... 43
20.1 - Level 1 maintenance ............................................................................................................................................................ 43
20.2 - Level 2 maintenance ............................................................................................................................................................ 44
20.3 - Level 3 (or higher) maintenance ........................................................................................................................................ 44
20.4 - Tightening torques for the main electrical connections ................................................................................................... 45
20.5 - Tightening torques for the main bolts and screws ............................................................................................................ 45
20.6 - Air heat exchanger ............................................................................................................................................................... 45
20.7 - Water heat exchanger maintenance ................................................................................................................................... 45
20.8 - Refrigerant volume .............................................................................................................................................................. 46
20.9 - Characteristics of R-410A ................................................................................................................................................... 46
21 - staRt-Up CheCklIst foR 30RQs/30RQsY heat pUMps (Use foR joB fIle) ...................................... 47