Watts Aerco TAG-0072 GF-146-E, Operation & Maintenance Manual

Page: 5 / 170

AM Series Boiler & Water Heater User Manual
TABLE OF CONTENTS
OMM-0100_E
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GF-146
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11/15/2019
Technical Support
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(800) 526-0288
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Mon-Fri, 8 am - 5 pm EST Page 5 of 170
9.20 DIAGNOSTICS
– BLOCKING (ERR) ERRORS ...................................................................................... 119
9.21 BLOCKED FLUE PRESSURE SWITCH ................................................................................................. 121
9.22 UNIT SHUT-DOWN ................................................................................................................................. 122
SECTION 10: MAINTENANCE .......................................................................................... 124
10.1 CHECKING FOR GAS LEAKS ................................................................................................................ 125
10.2 FLUE AND AIR INLET PIPING INSPECTION ........................................................................................ 125
10.3 SYSTEM PIPING, PRESSURE, AND EXPANSION TANK INSPECTION ............................................. 125
10.4 IGNITION AND FLAME SENSOR INSPECTION .................................................................................... 125
10.5 WIRING AND CONNECTIONS INSPECTION ........................................................................................ 125
10.6 PERFORMANCE VERIFICATION INSPECTION ................................................................................... 125
10.7 FLAME INSPECTION .............................................................................................................................. 125
10.8 FLAME SIGNAL INSPECTION ............................................................................................................... 126
10.9 RELIEF VALVE INSPECTION ................................................................................................................ 126
10.10 UNIT VICINITY INSPECTION ............................................................................................................... 126
10.11 PRESSURE GAUGE INSPECTION ...................................................................................................... 126
10.12 CONDENSATE DRAIN SYSTEM INSPECTION .................................................................................. 127
10.13 LOW WATER CUTOFF TEST ............................................................................................................... 127
10.14 REMOVING THE UNIT COVERS ......................................................................................................... 128
10.15 CLEANING THE BURNER AND PRIMARY HEAT EXCHANGER (FLUE/GAS SIDE) ........................ 129
10.16 INSPECTING AND REPLACING THE HEAT EXCHANGER THERMAL INSULATION ....................... 133
10.17 INSPECTING AND REPLACING THE BURNER THERMAL INSULATION ......................................... 134
10.18 CHECKING FOR GAS LEAKS AFTER REASSEMBLY........................................................................ 136
10.19 IGNITION AND FLAME DETECTION SENSOR ELECTRODE POSITIONING ................................... 137
10.20 AIR FILTER CLEANING ........................................................................................................................ 138
10.21 CONDENSATE TRAP AND NEUTRALIZING RESERVOIR MAINTENANCE ..................................... 139
10.22 CONTROL BOARD REPLACEMENT ................................................................................................... 141
10.23 DRAINING THE WATER FROM THE UNIT ......................................................................................... 142
10.24 WATER AND FLUE TEMPERATURE SENSOR .................................................................................. 142
10.25 OUTDOOR TEMPERATURE SENSOR (BOILERS ONLY) .................................................................. 143
10.26 AM RAPID RECOVERY (AMR) OPTION MAINTENANCE .................................................................. 143
10.26.1 Components and Piping .................................................................................................................................. 144
10.26.2 Buffer Tank Anode Rods .................................................................................................................................. 144
10.27 MAINTENANCE KITS PART LISTS ...................................................................................................... 145
10.27.1 Wiring Diagram ................................................................................................................................................ 146
SECTION 11: TECHNICAL DATA ..................................................................................... 153
SECTION 12: SPARE PARTS DRAWINGS & LISTS .......................................................... 155
12.1 AM 399/500 SPARE PARTS DRAWINGS .............................................................................................. 155
12.2 AM 399/500 SPARE PARTS LIST .......................................................................................................... 158
12.3 AM 750/1000 SPARE PARTS DRAWINGS ............................................................................................ 161
12.4 AM 750/1000 SPARE PARTS LIST ........................................................................................................ 164
12.5 AMR OPTION SPARE PARTS DRAWING ............................................................................................. 167
12.6 AM RAPID RECOVERY (AMR) OPTION SPARE PARTS LIST ............................................................. 168
APPENDIX A: CONTROL PANEL OPERATION CHART ..................................................... 169