Table Of Contents - Riello NXHP Series Installation, Operation And Maintenance Instructions

CONTENTS
1 - INTRODUCTION ............................................................................................................................................................................ 6
1.1 - Introduction................................................................................................................................................................................ 6
1.2 - Safety ........................................................................................................................................................................................ 6
1.3 - Preliminary checks .................................................................................................................................................................. 14
1.4 - Dimensions and clearance for NXHP 4-14 units ..................................................................................................................... 15
1.5 - Physical data and electrical data of NXHP units ..................................................................................................................... 17
1.6 - Accessories ............................................................................................................................................................................. 19
2 - INSTALLATION OF UNIT ........................................................................................................................................................... 20
2.1 - General.................................................................................................................................................................................... 20
2.2 - Moving and placing the unit..................................................................................................................................................... 20
2.3 - Water connections ................................................................................................................................................................... 23
2.4 - Electrical connections.............................................................................................................................................................. 27
2.5 - Water flow rate control ............................................................................................................................................................ 29
2.6 - Commissioning modes ............................................................................................................................................................ 32
2.7 - Check before start the unit ...................................................................................................................................................... 33
3 - INSTALLATION OF SYSTEM ...................................................................................................................................................... 34
3.1 - General customer electrical connection on terminal block ...................................................................................................... 34
3.2 - First step of configuration: Setting the time and day ............................................................................................................... 34
3.3 - Second step of configuration: Parameter menu ...................................................................................................................... 35
3.4 - Installation with electrical booster heaters............................................................................................................................... 37
3.5 - Unit with remote user interface................................................................................................................................................ 39
3.6 - Remote OAT sensor ................................................................................................................................................................ 42
3.7 - Master/Slave installation ......................................................................................................................................................... 42
4 - OPERATION ................................................................................................................................................................................ 47
4.1 - Unit range - NXHP ................................................................................................................................................................... 47
4.2 - Operating modes .................................................................................................................................................................... 47
4.3 - Major system components ...................................................................................................................................................... 60
5 - MAINTENANCE ........................................................................................................................................................................... 62
5.1 - Standard maintenance ............................................................................................................................................................ 62
5.2 - Tightening torques ................................................................................................................................................................... 63
5.3 - Air heat exchanger .................................................................................................................................................................. 64
5.4 - Water heat exchanger maintenance ....................................................................................................................................... 64
5.5 - Unit maintenance .................................................................................................................................................................... 64
5.6 - Refrigerant volume .................................................................................................................................................................. 64
5.7 - Characteristics of R-290 .......................................................................................................................................................... 65
6 - ALARM DESCRIPTION ............................................................................................................................................................... 66
6.1 - Alarm listing ............................................................................................................................................................................. 66
7 - PARAMETERS OVERVIEW ........................................................................................................................................................ 69
7.1 - Parameters list ........................................................................................................................................................................ 69
7.2 - Description of customized DI/DO configurations ..................................................................................................................... 80
8 - START-UP CHECKLIST FOR NXHP HEAT PUMPS (USE FOR JOB FILE) .............................................................................. 81
8.1 - General information ................................................................................................................................................................. 81
8.2 - Available options and accessories .......................................................................................................................................... 81
8.3 - Checks before start of unit ...................................................................................................................................................... 81
8.4 - Checks during operation of unit............................................................................................................................................... 82
8.5 - Maintenance checks................................................................................................................................................................ 82
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