Wolf CGB-75 Installation And Technical Guide

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Installation instructions and

technical guide

Gas condensing boiler

CGB-75 Wall mounted gas boiler

CGB-100 Wall mounted gas boiler

Document no. 30 62 555 Subject to modications

07/09 GB

Wolf GmbH · Postfach 1380 · D-84048 Mainburg · Tel. +49-8751/74-0 · Fax +49-8751/741600 · Internet: www.wolf-heiztechnik.de

Table of Contents

Other manuals for Wolf CGB-75

Installation And Operating Instructions64 pages

Assembly And Operating Instructions56 pages

Operating Instructions8 pages

Instructions100 pages

Maintenance Instructions12 pages

Questions and Answers:

D
Deborah JonesAug 25, 2025
What to do if my Wolf CGB-75 Boiler shows TBV excess temperature and low water pressure?
- L
  Lucas NealAug 25, 2025
  If the TBV experiences excess temperature, the combustion chamber cover overheats, the STB is triggered, or the water pressure is too low, first check the system pressure. Also, inspect the heating circuit pump and vent the system. If needed, press the reset button. Clean the heat exchanger, and inspect the TB combustion chamber. Increase system pressure and check the dirt filter.
T
Theresa SmithAug 29, 2025
How to fix CRC error of default values in my Wolf Boiler?
- A
  Alexander SmithAug 30, 2025
  If your Wolf Boiler shows a CRC error with default values, replace the control unit PCB.
J
jamesmillerAug 30, 2025
How to fix CRC fault of BCC in my Wolf CGB-75 Boiler?
- V
  Vanessa RamirezAug 30, 2025
  If your Wolf Boiler shows a CRC fault with the BCC (Boiler Coding Card), replace the boiler coding card.
J
Jay CampbellAug 30, 2025
What to do if my Wolf Boiler shows that the BCC number is invalid?
- M
  Madison GarciaAug 31, 2025
  If your Wolf Boiler shows that the BCC number is invalid, replace the boiler coding card.
M
Michael AguilarAug 31, 2025
What to do if my Wolf CGB-75 Boiler shows a BCC system error?
- E
  Ethan LynchAug 31, 2025
  If your Wolf Boiler shows a BCC system error, replace the boiler coding card.
S
Scott LeeAug 31, 2025
What to do if my Wolf Boiler has a fault in the 24 V AC supply?
- U
  ucastilloSep 1, 2025
  If your Wolf Boiler shows a fault in the 24 V AC supply, where the voltage is outside the permissible range, check the gas fan.
A
Alexa HarrisSep 1, 2025
How to activate boiler coding card in my Wolf CGB-75 Boiler?
- J
  Jordan KennedySep 1, 2025
  To activate the boiler coding card on your Wolf Boiler, press the reset button twice.
E
Emily PierceSep 1, 2025
How to fix ionisation current failure in my Wolf CGB-75 Boiler?
- C
  Christine GriffinSep 2, 2025
  If your Wolf Boiler is experiencing ionisation current failure, check the monitoring electrode and cable.
P
Patrick GloverSep 2, 2025
What to do if my Wolf Boiler shows flame pretence?
- J
  Joann KelleySep 2, 2025
  Press the reset button on your Wolf Boiler.
J
Jessica GallagherSep 3, 2025
What to do if my Wolf CGB-75 Boiler cylinder sensor is faulty?
- L
  Lynn MendezSep 3, 2025
  Check the sensor and lead of your Wolf Boiler.

Wolf CGB-75 Specifications

General

Type	Condensing Boiler
Output	75 kW
Fuel Type	Natural gas
Nominal heat output 80/60 °C	75 kW
Fuel	Natural gas

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