Checking The Flue Gas Monitoring Cgu-2(K) - Wolf CGU-2-18 Installation And Maintenance Instructions Manual

Checking the flue gas monitoring CGU-2(K)

The electronic flue gas monitoring switches off the gas
boiler CGU-2(K) at the flue outlet on the draught hood. The
boiler restarts automatically after approx. 15 mins.
A regular check must be carried out on the function
of the flue gas monitoring. If something is wrong
with the function of the flue gas monitoring, the
gas boiler must not be operated, as flue gas can
escape, causing a danger of poisoning.
Proceed as follows:
• Shut down the boiler.
• Raise flue pipe or boiler connection bend and cover
flue gas connection to the draught hood with a plate.
• Start the boiler.
• Enable emissions test mode.
The signal ring flashes yellow.
If functioning perfectly, the flue gas monitoring switches
off after 2 mins at the latest.
• Remove cover plate. Re-install flue pipe or flue bend.
• The boiler restarts automatically after approx.
15 mins.
Reassemble all components and test for functional
reliability.
Observe all maintenance safety instructions.
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Checking the flue gas monitoring CGU-2(K)
Flue gas connection
Fig.: Uncover flue gas connection
Coverplate
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