Baxi Megaflo System HE IE Series Installation & Servicing Instructions Manual page 31

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1. In the case of a pitched roof 25 - 50 degrees, position the lead tile to replace/flash over existing roof tiling. Make an aperture in the roof
suitable for the lower tube of the roof terminal and ensure the integrity of the roof cover is maintained. The adjustable plastic collar can either
be positioned on the lead tile or the lower tube of the roof terminal prior to the final positioning of the vertical flue through the tile. Check the
collar is correctly located to suit required roof pitch (either 25° to 38° or 37° to 50°). From inside the roof adjust the flue to a vertical position
and secure to the roof structure with the clamp supplied.
2. For flat roof installations the aluminium flashing must be incorporated into the roof covering and the appropriate aperture made in the roof
decking. The vertical flue is lowered onto the flashing making sure the collar of the flue locates securely with the flashing. (A mastic seal may
be necessary). From inside the roof, adjust the flue to a vertical position and secure to the roof structure with the clamp supplied.
IMPORTANT: If the boiler is not fitted immediately after the flue system, temporary precautions must be taken to prevent rain entry into the room
of installation.
Any precautionary measures must be removed prior to commissioning the boiler.
8.7 Flue Dimensions
The standard horizontal telescopic flue kit allows for lengths between 315mm and 500mm from elbow to terminal
Fig. 11
The maximum permissible equivalent horizontal flue length is:
10 metres (60/100 system, 24/28/32 models)
15 metres (60/100 system, 15/18 models)
20 metres (80/125 system, all models)
8.8 Flue Trim
1. The rubber flue trim supplied may be fitted to either the outside wall or on the inner wall of installation.
8.9 Terminal Guard (Fig. 12)
(Fig. 11).