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Installation
Greenstar Oilfit Flexi CF Flue – 6720807911 2019/05
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Fig. 20 Chimney cowl
If the chimney cowl is too large:
▶ Cut the chimney cowl down along the moulded marks and use the
inner set of securing points.
Fit the grille (8) onto the terminal end and secure with the screw
provided.
Fig. 21 Finishing the installation
Information plate
Fill in the details on the chimney plate and fit the chimney plate, either
next to the boiler/chimney or next to the electricity consumer unit. The
plate can either be stuck to a flat sound surface or fitted to the mounting
plate and screwed in place.
Flue draft
Because the flue operates at a lower temperature on a condensing boiler,
compared to that of a conventional boiler, the flue draft will be lower.
Typically the draft will be between 0.5mmwg and 4.4mmwg, measured
with a warm flue, but the burner not firing. The actual figure will vary
depending upon weather conditions, flue height and position.
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