A.O. Smith GCV Series - Default Chapter; Table of Contents

7
TABLE OF CONTENTS
BASIC INSTALLATION ...................................................................................................................................... 8-16
DRAINING AND FILLING THE WATER HEATER ..................................................................................................17
Draining the Water Heater ................................................................................................................................17
Filling the Water Heater ....................................................................................................................................17
CHECKING THE GAS SUPPLY FOR PRESSURE ................................................................................................18
CHECKING FOR SUFFICIENT COMBUSTION AIR OR VENTING ISSUES .................................................. 18-19
Combustion Air Test ..........................................................................................................................................18
Draft Test ...........................................................................................................................................................19
External Inspection & Cleaning of the Base Ring Filter ....................................................................................19
Cleaning the Combustion Chamber and Flame Arrestor ..................................................................................19
TESTING THE THERMOCOUPLE AND GAS CONTROL VALVE/THERMOSTAT ...............................................20
Thermocouple Output Test ................................................................................................................................20
Gas Control Valve/Thermostat (Thermal Switch Models) .................................................................................20
REPLACING THE THERMOCOUPLE AND GAS CONTROL VALVE/THERMOSTAT ................................... 21-23
Removing the Manifold/Burner Assembly .........................................................................................................21
Removing the Burner from the Manifold/Burner Assembly ...............................................................................21
Replacing the Thermocouple ............................................................................................................................21
Replacing the Manifold/Burner Assembly .........................................................................................................22
Removing and Replacing the Gas Control Valve/Thermostat ...........................................................................23
ADJUSTING THE TEMPERATURE ON THE GAS CONTROL VALVE/THERMOSTAT .......................................24
GAS WATER HEATER SIZING GUIDE ..................................................................................................................25
LEAKAGE CHECKPOINTS ....................................................................................................................................25
TECHNICAL SERVICE BULLETINS ................................................................................................................ 26-38
Water Hammer ..................................................................................................................................................27
Mineral Buildup .................................................................................................................................................28
Aluminum Hydroxide .........................................................................................................................................29
Condensation ....................................................................................................................................................30
Discolored Water ...............................................................................................................................................31
Smelly Water .....................................................................................................................................................32
Chlorination Procedure .....................................................................................................................................33
Not Enough Hot Water ......................................................................................................................................34
Thermal Expansion ..................................................................................................................................... 35-36
Leaking Temperature and Pressure Relief Valve ..............................................................................................37
Insulation Blanket ..............................................................................................................................................38
GENERAL INFORMATION ............................................................................................................................... 39-40