Bosch C 1050 ES Manuals

Table of Contents

• • 2

    Table of Contents

• 3

  1 Key to Symbols and Safety Instructions

  • 3

    Key to Symbols
  • 3

    Safety Instructions

• 6

  2 FCC Rules

• 6

  3 Appliance Details

  • 6

    Features
  • 7

    Specifications (Technical Data)
  • 8

    Unpacking the Heater
  • 9

    General Rules to Follow for Safe Operation
  • 10

    Dimensions and Minimum Installation Clearances

• 11

  4 Installation Instructions

  • 11

    Specialized Tools
  • 11

    Introduction
  • 11

    Venting
  • 26

    Combustion Air Requirements
  • 27

    Proper Location for Installing Your Heater
  • 27

    Heater Placement and Clearances
  • 27

    Hanging Appliance On the Wall
  • 29

    Gas Piping & Connections
  • 32

    Water Connections
  • 32

    Water Quality
  • 33

    Filling the Condensate Trap
  • 34

    Domestic Hot Water Recirculation
  • 35

    Space Heating Applications
  • 36

    Measuring Gas Pressure

• 37

  5 Electrical Connections

  • 37

    Electrical Power Supply
  • 37

    Position of the Fuses in Control Unit

• 38

  6 Operation Instructions

  • 38

    Description LCD Display
  • 39

    For Your Safety Read before Operating Your Water Heater
  • 39

    Power
  • 39

    Temperature Selection
  • 40

    Use of Optional Remote Control Accessory (Part No. 7709003213)
  • 40

    Operation
  • 40

    Reset Button
  • 40

    Program Button
  • 41

    Locked Condition

• 41

  7 Maintenance and Service

  • 41

    Annual Maintenance
  • 41

    Winterizing for Seasonal Use
  • 41

    Mineral Scale Build-Up
  • 42

    Condensing Heat Exchanger Unit
  • 43

    Adjusting CO2
  • 44

    Program Values
  • 45

    Control Board Diagnostics

• 47

  8 Troubleshooting

  • 47

    Introduction
  • 47

    Burner Does Not Ignite When Hot Water Is Turned ON
  • 47

    Water Is Too Hot
  • 47

    Water Is Not Hot Enough
  • 47

    Low Water Flow/Pressure
  • 48

    Hot Water Temperature Fluctuates at Tap
  • 49

    Noisy Burner/Heater During Operation

• 50

  9 Problem Solving

  • 50

    Error Code Diagnostics

• 54

  10 Electrical Diagram

• 55

  11 Sensor Resistance Charts

• 56

  12 Functional Scheme

• 57

  13 Interior Components Diagram and Parts List

  • 57

    Interior Components
  • 59

    Components Diagram

• 66

  14 Protecting the Environment

• 67

  15 Installer Checklist to Be Completed By Installer Upon Installation