AO Smith XWH 3400 Manuals

Manuals and User Guides for AO Smith XWH 3400. We have 1 AO Smith XWH 3400 manual available for free PDF download: Service Handbook

A.O. Smith XWH 3400 Service Handbook

A.O. Smith XWH 3400 Service Handbook (80 pages)

COMMERCIAL BOILERS/WATER HEATERS

Brand: A.O. Smith | Category: Water Heater | Size: 9 MB

Table of Contents

Table of Contents
3
Introduction
4
- Qualifications
  4
- Service Warning
  4
- Service Reminder
  4
- Tools Required
  4
Installation Considerations
5
- Instruction Manual
  5
- Closed Water Systems
  5
- Thermal Expansion
  5
- Air Requirements
  5
- Contaminated Air
  5
- Venting
  6
- General Venting Information
  6
- Water Piping
  6
- Temperature Rise & Flow Rate
  6
- Boiler/Water Heater Controls
  7
- Primary System Control
  7
- Installation Checklist
  8
Features and Components
9
Operation and Service
11
- Modulating Fire Operation
  11
- Combustion Blower
  11
- Heat Exchanger Assembly
  12
- Venturi and Gas Train Assembly
  14
- Burner Assembly
  15
- Flame Sensor
  17
- Spark Igniter
  18
- Gas Valve
  19
- Temperature Sensors
  20
- Air Filter Assembly
  21
- Control Panel Assembly
  22
- Control Board Assembly
  25
- Display System (Touch Screen Display)
  29
- Connector Terminals
  29
Start up and Operations
31
Lighting and Operating Instructions
34
- Adjustment
  35
- Setting of the Test Mode
  35
Control System Operations
38
- Burner Control System
  38
- Overview
  38
- Burner Control Operation
  40
- General Operational Sequence
  41
- Lead Lag
  42
- Local Operator Interface: Display System
  44
- Installation Instructions (S7999D OI Display)
  45
- Page Navigation
  48
Troubleshooting
58
- Poor Combustion - Ignition Failure - Rough Start/Operation
  58
Troubleshooting Codes
60
Piping Diagrams
75

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