A.O. Smith 52 User Manual

4
TABLE OF CONTENTS
SAFE INSTALLATION, USE, AND SERVICE..................... 2
Important Denitions ......................................................2
GENERAL SAFETY INFORMATION .................................. 3
PRECAUTIONS .............................................................3
HYDROGEN GAS (FLAMMABLE) .................................3
INTRODUCTION ................................................................ 5
Preparing for the Installation ..........................................5
DIMENSIONS AND CAPACITIES DATA ............................ 6
APPROVALS ...................................................................... 7
MODEL AND RATING ........................................................ 7
FEATURES AND COMPONENTS ..................................... 8
LOCATING THE NEW WATER HEATER ......................... 10
Facts to Consider About the Location ...........................10
INSTALLATION .................................................................11
REQUIRED ABILITY .....................................................11
General ..........................................................................11
CONTAMINATED WATER .............................................11
CIRCULATING PUMP ...................................................11
INSULATION BLANKETS .............................................11
TEMPERATURE-PRESSURE RELIEF VALVE ............. 11
WATER LINE CONNECTIONS .....................................12
CLOSED WATER SYSTEMS ........................................ 12
THERMAL EXPANSION ................................................12
ELECTRICAL ................................................................... 13
GENERAL .....................................................................13
AMPERAGE TABLE/OVERCURRENT PROTECTION . 14
HEATER CIRCUITS - ELECTRONIC CONTROL
MODELS .......................................................................14
CONTROL CIRCUIT - ELECTRONIC CONTROL
MODELS .......................................................................14
Sequence of Operation .................................................14
WIRING DIAGRAMS ........................................................ 16
CONVERSION TO SINGLE PHASE .............................18
CONVERSION TO THREE PHASE ..............................18
CONVERSION TO SINGLE PHASE .............................20
CONVERSION TO THREE PHASE ..............................20
OPERATION ..................................................................... 21
GENERAL .....................................................................21
FILLING THE WATER HEATER .................................... 21
INITIAL START UP ........................................................21
Draining the Water Heater ............................................. 21
TEMPERATURE REGULATION ...................................... 22
High Temperature Limit Controls (ECO) ........................ 22
Thermostat Controls ......................................................22
Thermostat Settings - Surface Mount Control ..............22
THERMOSTAT SETTINGS - electronic Controls .........23
ELECTRONIC CONTROL MODELS OPERATION .......... 24
CONTROL SYSTEM FEATURES .................................24
CONTROL SYSTEM NAVIGATION...............................24
THE DESKTOP SCREEN .............................................24
Temperatures Menu ......................................................26
TEMPERATURE SETTINGS.........................................27
HEATER STATUS MENU .............................................. 28
ECONOMY MODE SETUP MENU ................................28
Economy Mode Settings ...............................................30
Economy Mode Settings ...............................................31
ALARM OUTPUT SETUP MENU .................................. 33
DISPLAY SETTINGS MENU .........................................33
HEATER INFORMATION MENU ...................................33
CURRENT FAULT / ALERT MENU ...............................34
FAULT HISTORY MENU ...............................................34
FAULT OCCURRENCE MENU .....................................34
RESTORE FACTORY DEFAULTS MENU ....................35
MAINTENANCE ............................................................... 35
General .......................................................................... 35
Anode Rod Inspection ...................................................35
FLUSHING the Water Heater ........................................36
SEDIMENT REMOVAL .................................................. 36
LIME SCALE REMOVAL ...............................................36
TROUBLESHOOTING CHECKLIST ................................ 37
CHECKLIST ..................................................................37
REPLACEMENT PARTS ...............................................37
Leakage Checkpoints ....................................................37
PIPING DIAGRAMS ......................................................... 39
Printed on 2/8/2018 9:05 AM CT

A.O. Smith 52 Specifications

General

Brand	A.O. Smith
Model	52
Category	Water Heater
Language	English