Watts Aerco INN 1060N - Page 4

Innovation - Edge [i] Installation, Operation, Maintenance Manual
CONTENTS
OMM-0143_A • GF-216 • 9/6/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 4 of 170
6.1 MAINTENANCE SCHEDULE ..............................................................................................77
6.2 Water Quality Guideline ......................................................................................................78
6.3 IGNITER-INJECTOR ..........................................................................................................78
6.4 FLAME DETECTOR ...........................................................................................................81
6.5 COMBUSTION CALIBRATION ...........................................................................................81
6.6 SAFETY DEVICE TESTING ...............................................................................................81
6.7 FIRESIDE INSPECTION .....................................................................................................82
6.8 WATERSIDE INSPECTION AND CLEANING .....................................................................86
6.8.1 Waterside Inspection-Cleaning Schedule ......................................................................86
6.8.2 Waterside Inspection ....................................................................................................87
6.8.3 Waterside Heat Exchanger Cleaning ............................................................................88
6.9 CONDENSATE DRAIN TRAP .............................................................................................90
6.10 AIR FILTER REPLACEMENT ...........................................................................................91
6.11 LOW WATER CUTOFF (LWCO) CAPACITOR INTEGRITY TEST ...................................92
6.11.1 Low Water Cutoff (LWCO) - Capacitor Electrical Short Test........................................92
6.11.2 Low Water Cutoff (LWCO) - Standard Test .................................................................94
6.12 SHUTTING THE WATER HEATER DOWN FOR AN EXTENDED PERIOD OF TIME ......94
6.13 PLACING THE UNIT BACK IN SERVICE AFTER A PROLONGED SHUTDOWN ............94
6.14 SPARK MONITOR (AC CURRENT TRANSDUCER) ........................................................95
CHAPTER 7. TROUBLESHOOTING GUIDE .............................................................. 97
7.1 INTRODUCTION.................................................................................................................97
7.2 ADDITIONAL FAULTS WITHOUT SPECIFIC FAULT MESSAGES .................................. 109
CHAPTER 8. WATER HEATER MANAGEMENT ..................................................... 111
8.1 GENERAL DESCRIPTION ................................................................................................ 111
8.2 WHM PRINCIPLES OF OPERATION ............................................................................... 112
8.3 NEW AERCO WHM FEATURES ...................................................................................... 112
8.3.1 Valve Feedback .......................................................................................................... 112
8.3.2 Valve Supervisor ......................................................................................................... 112
8.3.3 Valve Control .............................................................................................................. 112
8.3.4 Modbus Header Sensor .............................................................................................. 113
8.3.5 Temperature Sensor Calibration ................................................................................. 113
8.3.6 Manual Mode Password Required .............................................................................. 113
8.3.7 Auto-Manager Transfer ............................................................................................... 114
8.3.8 Run Hours and Run Cycles ......................................................................................... 114
8.3.9 High Temperature Governor ....................................................................................... 114
8.4 WHM STATUS DISPLAYS ................................................................................................ 115
8.5 WATER HEATER MANAGEMENT ALTERNATING STATUS DISPLAYS......................... 115
8.6 WHM Parameters .............................................................................................................. 116
8.7 WHM HARDWARE INSTALLATION & SET-UP INSTRUCTIONS .................................... 122
8.7.1 Installation Notes ........................................................................................................ 123
8.7.2 Hardware Installation .................................................................................................. 123
8.7.3 WHM Modbus Network Wiring .................................................................................... 124
8.7.4 Control and Power Wiring ........................................................................................... 125
8.8 WHM PROGRAMMING & START-UP .............................................................................. 129
8.9 TROUBLESHOOTING ...................................................................................................... 131
8.10 SEQUENCING VALVE DESCRIPTION & OPERATION ................................................. 132