Aerco Esteem 399, Installation And Maintenance Instructions Manual

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TABLE OF CONTENTS
16.1 - Check water pressure ............................................................................................................................................84
16.2 - Overview ................................................................................................................................................................84
16.3 - Displays .................................................................................................................................................................84
16.4 - Start-up procedure .................................................................................................................................................84
16.5 - Supply water temperature adjustment ...................................................................................................................84
16.6 - Delays, alarms and protective actions ................................................................................................................... 85
16.7 - Circulator pump protection ..................................................................................................................................... 85
16.8 - Heater’s Freeze protection ..................................................................................................................................... 85
16.9 - Display in energy saver mode ............................................................................................................................... 85
16.10 - “Users’ menu” .......................................................................................................................................................86
16.11 - “Installer’s menu” ..................................................................................................................................................87
16.12 - Diagnostic ............................................................................................................................................................ 88
16.13 - Diagnostic: Lockouts “Loc” ................................................................................................................................... 89
16.14 - Diagnostic: Blocking errors “Err” .......................................................................................................................... 91
16.15 - Flue blocked pressure switch ............................................................................................................................... 92
16.16 - Shuts heater down ............................................................................................................................................... 92
16.17 - How to clean the appliance jacket ....................................................................................................................... 92
17 - MAINTENANCE ............................................................................................................................................................. 93
17.1 - Care and maintenance ........................................................................................................................................... 93
17.1.1 - Address reported problems ......................................................................................................................94
17.1.2 - Check all piping for gas leaks ...................................................................................................................94
17.1.3 - Verify flue and air lines in good condition and sealed tight; ......................................................................94
17.1.4 - Check system water pressure/system piping/expansion tank; .................................................................94
17.1.5 - Check control settings ..............................................................................................................................94
17.1.6 - Check ignition and flame sense electrodes .............................................................................................. 95
17.1.7 - Check wiring and connections .................................................................................................................. 95
17.1.8 - Perform performance verification. ............................................................................................................ 95
17.1.9 - Flame inspection ...................................................................................................................................... 95
17.1.10 - Check flame signal ................................................................................................................................. 95
17.1.11 - Check relief valve ................................................................................................................................... 95
17.1.12 - Check heater area ..................................................................................................................................96
17.1.13 - Check pressure gauge ...........................................................................................................................96
17.1.14 - Check vent piping ...................................................................................................................................96
17.1.15 - Check air piping ......................................................................................................................................96
17.1.16 - Check condensate drain system ............................................................................................................96
17.1.17 - Check heater piping (gas and water) ......................................................................................................96
17.1.18 - Shut heater down ...................................................................................................................................97
17.1.19 - Test low water cutoff (if installed) ............................................................................................................97
17.1.20 - Reset button (low water cutoff) ...............................................................................................................97
17.1.21 - Check electronic anode ..........................................................................................................................97
17.2 - Removing the casing .............................................................................................................................................. 98
17.3 - Cleaning the burner and primary heat exchanger, flue gas side ............................................................................ 99
17.3.1 - Thermal insulations ................................................................................................................................ 102
17.4 - Correct positioning of the ignition and flame detection electrodes ...................................................................... 103
17.5 - Clean the air filter ................................................................................................................................................. 103
17.6 - Condensate trap and neutralizing box maintenance and cleaning ......................................................................104
17.7 - Connection of the display to other burners .......................................................................................................... 105
17.8 - How to move a control board ...............................................................................................................................106
17.9 - Draining the water from the heater ......................................................................................................................107
17.10 - Water and flue temperature sensor ....................................................................................................................107
17.11 - 199 and 250 models wiring diagram .................................................................................................................. 108
17.12 - 399 and 500 models wiring diagram .................................................................................................................. 110
18 - TECHNICAL DATA ....................................................................................................................................................... 114
19 - SPARE PARTS ............................................................................................................................................................. 116
20 - READ OUT FLOW CHART .......................................................................................................................................... 131
21 - FACTORY MENU ......................................................................................................................................................... 132
22 - SEQUENCE OF OPERATION for WATER HEATER ...................................................................................................134