A.O. Smith PCG250T403NOV 100 User Manuals

Table of Contents

• Service Handbook Introduction

  3
• Warnings and Cautions

  4
• Table Of Contents

  5
• Basic Installation & Operation

  6
• Combustion Air and Vent System Requirements

  7
• Know the Water Heater’s Component Parts

  11
• Water Heater Operation

  14
• Filling and Draining the Water Heater

  15
• Lighting Instructions

  16
• Adjusting the Temperature on the Electronic Control Display

  17
• Using the Electronic Control Display

  18
• Electronic Control Display Troubleshooting

  20
• External Inspection and Cleaning

  24
• Electronic Control Display Removal / Replacement

  25
• Powered Anode Removal / Replacement

  26
• Pressure Switch Removal / Replacement

  28
• Transformer Removal / Replacement

  29
• Air Intake Chamber Box Removal / Replacement

  31
• Wiring Harnesss Removal / Replacement

  34
• Air Intake Chamber Fan Removal / Replacement

  37
• Pressure Tubing Removal / Replacement

  39
• Inner Door/Manifold/Burner Assembly Removal / Replacement

  41
• Flame Sense/Hot Surface Igniter Removal / Replacement

  43
• Burner Removal / Replacement

  44
• Burner Orifice Removal / Replacement

  47
• Gas Control Valve/Thermostat Removal / Replacement

  50
• Checking the Gas Supply Pressure

  52
• Gas Water Heater Sizing Guide -and- Leakage Checkpoints

  53
• General Information

  54