Wolf CGB-75 Maintenance Instructions Manual
Gas condensing wall mounted boiler
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Also See for CGB-75:
- Instructions manual (100 pages) ,
- Installation and technical manual (64 pages) ,
- Installation and operating instructions manual (64 pages)
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Summary of Contents for Wolf CGB-75
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Page 1: Maintenance Instructions
Maintenance instructions Gas condensing boiler CGB-75 Wall mounted boiler CGB-100 Wall mounted boiler Wolf GmbH · Postfach 1380 · D-84048 Mainburg · Tel. +49-8751/74-0 · Fax +49-8751/741600 · Internet: www.wolf-heiztechnik.de Document no. 30 62 556 Subject to modifications 07/09... - Page 2 Index Index ......................Page Safety instructions ..................3 Maintenance procedure ................4-9 Overview of the steps to be taken and maintenance report ....10-11 List of required parts ................... 12 For easy maintenance! 30 62 556_0709...
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Page 3: Safety Instructions
Figure: Gas combination valve Regular maintenance and the exclusive use of original Danger from electrical voltage Wolf spare parts are necessary preconditions for Escaping gas may cause poisoning or an explosion trouble-free operation and a long service life. We therefore recommend you arrange a maintenance contract with a local heating contractor. -
Page 4: Maintenance Procedure
Maintenance procedure Pivot the control unit flap down. Switch OFF the condensing boiler at the ON/OFF switch. The mains terminals are 'live' even when the ON/OFF switch has been switched OFF. Disconnect the system from the power supply. Close the gas tap. Danger of burning Leave to cool down for half an hour before beginning maintenance work on the appliance... - Page 5 Maintenance procedure Undo screws on upper casing cover (left / right). Pull the cover forwards slightly and lift off. Pull out plug: Ignition electrode Earth conductor Monitoring electrode (ionisation) Thermostat Gas fan Fan variable speed control ...
- Page 6 Maintenance procedure Undo gas connection at the gas combination valve. Undo 6 mm Allen screws (3x) on the heat exchanger cover and the fan manifold. Remove fan with manifold. Remove burner gasket and burner, clean burner with a vacuum cleaner or flush with water. 30 62 556_0709...
- Page 7 Maintenance procedure Undo star shaped handles (3x) Lift heat exchanger cover using maintenance tool Replace O-ring annually Remove heat exchanger cover O-ring 30 62 556_0709...
- Page 8 Maintenance procedure Replace ignition and monitoring electrodes Ignition electrode Monitoring electrode Cleaning the heating surface: Hook the maintenance tool into the combustion chamber and pull out the chamber. Rotate the maintenance tool 90°, hook into the lifting eye of the first combustion chamber extension and pull out the chamber extension.
- Page 9 Maintenance procedure Then clean and refill the siphon. Assembly Assembly is carried out in reverse order, observing the following points: • Before refitting the heat exchanger cover, lubricate the O-ring with silicone grease. • Check the burner gasket for damage before fitting (replace if Siphon necessary) and ensure it is fitted correctly.
- Page 10 Overview of the steps to be taken and maintenance report Overview of the steps to be taken and maintenance report No. Step Report item Report item Report item Switch OFF the boiler, emergency stop switch is OFF Close the gas supply valve Remove the casing and the combustion chamber housing Unplug the electrical connections from the fan, sensors and electrodes...
- Page 11 Overview of the steps to be taken and maintenance report Report item Report item Report item Report item Report item Report item Report item °C °C °C °C °C °C °C °C °C °C °C °C °C °C °C °C °C °C °C...
- Page 12 • The display must show BUS connection. connection Maintenance requires the following: Maintenance set CGB-75/100 Part no. 86 12 865 Cleaning brush Part no. 24 40 053 Tester for BImSch test We recommend the following as part of your service kit: 10 g tube of silicone grease Part no.