very helpful, the information in these manuels are very detailed
Text excerpt from page 15 (click to view)
Fitting the Chimney Stack
The chimney stack consists of two sections. 1. Fit the upper section (S) first. Expand the chimney slightly to allow it to be fitted over the brackets (1) and (2), and then secure the chimney stack to bracket (2) using two self tapping screws provided in the fitting kit. Fit the lower chimney section (I) by expanding the chimney slightly to allow it to be fitted over the brackets (1), and the upper chimney section and bracket (3). Ensure the bottom edge of the chimney stack is fitted correctly into the recess around the top of the canopy, and secured using the two self tapping screws as illustrated in the close-up above. The upper (S) and lower (I) chimney stack sections are fixed to the middle wall bracket (3) by the natural force of the metal, and the over lapping of the sections by vigorously pushing against the centre of the chimney.