53
Note: The full load adjustment changes the gas/air graph slope angle, whilst the part
load adjustment shifts the base point on a parallel axis; each adjustment therefore
alters the previous setting slightly. Repeat this procedure as often as needed until
the desired result has been achieved at both part and full loads.
- Remove the combustion equipment probe and replace measuring point sealing cap.
- Refit the front panel and return the boiler to 'temperature mode’ by pressing the
'prog.' -key and holding for more than 1 second.
- The boiler is now ready for normal operation.
11.2.3 Cleaning the siphon
Fig. 24 Siphon cleaning
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- Isolate the electrical supply to the boiler.
- Remove the boiler front casing cover.
- Lift and drop down the boiler instrument panel to completely reveal the siphon.
- Pull off the plastic flexible hose from the siphon.
- Loosen the sealing nut from top of the siphon.
- Release the complete siphon from the heat exchanger and remove from the boiler.
- Unscrew the siphon bowl and clean removing all debris
- Refill the siphon with fresh clean water and remount on the boiler.
- Re-assemble boiler replacing any damaged gaskets.
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