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INDEX
1. SAFETY .......................................................................................................................... 8
1.1 USE OF SYMBOLS .......................................................................................................................... 8
1.2 GENERAL WARNINGS AND NOTES WHEN WORKING WITH THE HX-UNIT ............................. 9
2. INTRODUCTION ............................................................................................................ 11
2.1 ABOUT THIS MANUAL ................................................................................................................. 11
2.2 PROCESS AND INSTRUMENTATION .......................................................................................... 12
2.2.1 Primary circuit components and function ..................................................................... 13
2.2.2 Secondary circuit components and function ................................................................. 13
2.2.3 Control unit ...................................................................................................................... 14
2.2.4 Instruments and their function ...................................................................................... 14
2.2.5 Control / supervision parameters.................................................................................. 15
2.2.6 HX-unit electrical box ..................................................................................................... 16
2.3 INSTALLATION SPECIFICATIONS .............................................................................................. 17
2.3.1 Liquid quality ................................................................................................................... 17
2.3.2 Required ambient conditions ......................................................................................... 18
3. COMMISSIONING .......................................................................................................... 19
3.1 STEP 1, MECHANICAL PART ...................................................................................................... 19
3.1.1 General installation instructions ................................................................................... 19
3.1.2 Pipe connections ............................................................................................................. 19
3.1.3 Pipe flushing.................................................................................................................... 20
3.1.4 Pressure test ................................................................................................................... 20
3.1.5 Setting up the primary circuit ........................................................................................ 22
3.1.6 Adding liquid and de-airing ............................................................................................ 23
3.1.7 Adding corrosion inhibitor when using a fresh water system ..................................... 25
3.2 STEP 2, ELECTRICAL PART ........................................................................................................ 26
3.2.1 Power supply ................................................................................................................... 26
3.2.2 Signal cables ................................................................................................................... 26
3.3 STEP 3, CONTROL UNIT SETUP ................................................................................................. 27
3.3.1 Basic setup ...................................................................................................................... 27
3.3.2 Application parameter list .............................................................................................. 27
3.3.3 Parameter description.................................................................................................... 28
3.3.4 General information about alarms and shutoff limits .................................................. 30
3.3.5 FTSA11 flow switch function .......................................................................................... 30
3.3.6 Temperature set points .................................................................................................. 32
3.3.7 Temperature alarm settings .......................................................................................... 37
3.3.8 Low pressure alarm ....................................................................................................... 38
3.3.9 Leak switch alarm specifications .................................................................................. 38
3.3.10 Three-way valve / two-way valve actuator settings ...................................................... 39
3.4 STEP 4, ADJUSTING THE FLOW ................................................................................................. 40
3.4.1 Starting the pump ........................................................................................................... 40
3.4.2 Adjusting the system flow and setting the switch point of the FTSA11 ...................... 41
3.4.3 Checklist before starting main NX drives ..................................................................... 42
4. UNIT MAINTENANCE .................................................................................................... 44
4.1 GENERAL MAINTENANCE .......................................................................................................... 44
4.1.1 Renewing liquid in the primary circuit .......................................................................... 44