Checking The Gas-Burner Control System For Correct Activation; Replacing The Gas Burner Fitting - Buderus 24C Servicing Manual

3 Troubleshooting
3.1.26 Checking the gas-burner control system for
correct activation
Set the mains switch to "0".
Connect the multimeter (AC) to the plug-and-socket power-
supply connection to the gas burner fitting.
Turn the mains power switch to "I".
Set the chimney-sweep switch to "I".
Start up the device. Take a reading after about 30 seconds
of running time.
If the voltage reading is 24 V, the control system of the gas
burner fitting is in order.
When the test is complete, set the mains switch to "0".

3.1.27 Replacing the gas burner fitting

DANGER !
All work on the gas supply must be carried out
by a CORGI registered engineer.
Shut the gas cock.
Disconnect the system from the power supply.
Disconnect the fan using the plug and socket (fig. 77,
item 1), loosen the UBA control line at the fan (fig. 77,
item 2) and the gas burner fitting (fig. 77, item 3).
Loosen the union nut (fig. 77, item 4) on the gas burner
fitting.
Subject to modifications resulting from technical improvements!
60 Servicing manual for wall-mounted condensing gas boiler 600 Series 11S/19S/24S/24C • Issued 02/2006
Fig. 76 600 Series 11S / 19S / 24S / 24C:
Checking the gas-burner assembly for correct
activation
Fig. 77 Replacing the gas burner fitting on the 600 Series:
Loosen plug and union nut
Buderus Ltd. • http://www.buderus-domestic.co.uk
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