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Servicing - Page 25
Additional Information
To ensure correct performance and that an adequate seal is obtained around the flue hood and heat exchanger various
seals have been added to the appliance.
Please bear in mind when servicing the appliance that these seals will need to be checked and replaced if necessary.
All the parts are shown in the drawing below.
It is preferable to measure the CO% and CO2% content of
the flue products. This is achieved by placing a suitable
sampling probe into the fluehood via the sample test point on
the air box door.
Typical figures based on a 500mm flue length with the boiler
operating at maximum output are:-
CO
0.002 - 0.005%
CO
4.5 - 5.0 %
2
IMPORTANT: After completing any servicing or replacement
of a gas carrying component, it is essential that a test for gas
soundness is made and functional checks of controls
operation carried out.
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