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Wiring Schematic Diagrams

Wiring Schematic Diagrams

Download our wiring diagrams for our complete range of Bosch controls and modules.

For further information, or for technical support,
please call 0330 123 3004 or e-mail commercial.industrial@uk.bosch.com

4122 Control schematics

The key explains what each number represents in the document title of the table.

Key

  • Master controller.
  • Number of boilers used.
  • Domestic hot water used - 0=no. 1=yes.
  • Number of un-mixed heating circuits.
  • Number of mixed heating circuits.

Example

  • 4122-1-0-1-1
  • 4122 = Master Controller.
  • 1 = Number of boilers used.
  • 0 = Domestic hot water is not used.
  • 1 = Number of un-mixed heating circuits.
  • 1 = Number of mixed heating circuits

4121 Control schematics

The key explains what each number represents in the document title of the table.

Key

  • Master controller.
  • Number of boilers used.
  • Domestic hot water used - 0=no. 1=yes.
  • Number of un-mixed heating circuits.
  • Number of mixed heating circuits.

Example

  • 4121-1-0-1-1
  • 4121 = Master Controller.
  • 1 = Number of boilers used.
  • 0 = Domestic hot water is not used.
  • 1 = Number of un-mixed heating circuits.
  • 1 = Number of mixed heating circuits

4211 Control schematics

The key explains what each number represents in the document title of the table.

Key

  • Master controller.
  • Number of boilers used.
  • Domestic hot water used - 0=no. 1=yes.
  • Number of un-mixed heating circuits.
  • Number of mixed heating circuits.

Example

  • 4211-1-0-1-1
  • 4211 = Master Controller.
  • 1 = Number of boilers used.
  • 0 = Domestic hot water is not used.
  • 1 = Number of un-mixed heating circuits.
  • 1 = Number of mixed heating circuits

4212 Control schematics

The key explains what each number represents in the document title of the table.

Key

  • Master controller.
  • Number of boilers used.
  • Domestic hot water used - 0=no. 1=yes.
  • Number of un-mixed heating circuits.
  • Number of mixed heating circuits.

Example

  • 4212-1-0-1-1
  • 4212 = Master Controller.
  • 1 = Number of boilers used.
  • 0 = Domestic hot water is not used.
  • 1 = Number of un-mixed heating circuits.
  • 1 = Number of mixed heating circuits

4321 Control schematics

The key explains what each number represents in the document title of the table.

Key

  • Master controller.
  • Number of boilers used.
  • Domestic hot water used - 0=no. 1=yes.
  • Number of un-mixed heating circuits.
  • Number of mixed heating circuits.

Example

  • 4321-1-0-1-1
  • 4321 = Master Controller.
  • 1 = Number of boilers used.
  • 0 = Domestic hot water is not used.
  • 1 = Number of un-mixed heating circuits.
  • 1 = Number of mixed heating circuits

These diagrams are also the same for the 4322 control.

4323 Control schematics

The key explains what each number represents in the document title of the table.

Key

  • Master controller.
  • Number of boilers used.
  • Domestic hot water used - 0=no. 1=yes.
  • Number of un-mixed heating circuits.
  • Number of mixed heating circuits.

Example

  • 4323-1-0-1-1
  • 4323 = Master Controller.
  • 1 = Number of boilers used.
  • 0 = Domestic hot water is not used.
  • 1 = Number of un-mixed heating circuits.
  • 1 = Number of mixed heating circuits

EM10 Control Schematics

The key explains what each number represents in the document title of the table.

Key

  • Master controller.
  • Number of boilers used.
  • Domestic hot water used - 0=no. 1=yes.
  • Number of un-mixed heating circuits.
  • Number of mixed heating circuits.

Example

  • EM10-1-0-1-1
  • EM10 = Master Controller.
  • 1 = Number of boilers used.
  • 0 = Domestic hot water is not used.
  • 1 = Number of un-mixed heating circuits.
  • 1 = Number of mixed heating circuits

MCM10 Control Schematics

The key explains what each number represents in the document title of the table.

Key

  • Master controller.
  • Number of boilers used.
  • Domestic hot water used - 0=no. 1=yes.
  • Number of un-mixed heating circuits.
  • Number of mixed heating circuits.

Example

  • MCM10-1-0-1-1
  • MCM10 = Master Controller.
  • 1 = Number of boilers used.
  • 0 = Domestic hot water is not used.
  • 1 = Number of un-mixed heating circuits.
  • 1 = Number of mixed heating circuits

RC35 Control schematics

The key explains what each number represents in the document title of the table.

Key

  • Master controller.
  • Number of boilers used.
  • Domestic hot water used - 0=no. 1=yes.
  • Number of un-mixed heating circuits.
  • Number of mixed heating circuits.

Example

  • RC35-1-0-1-1
  • RC35 = Master Controller.
  • 1 = Number of boilers used.
  • 0 = Domestic hot water is not used.
  • 1 = Number of un-mixed heating circuits.
  • 1 = Number of mixed heating circuits