Saunier Duval Xeon 80ff Instructions For Use Installation And Servicing page 14

4.7 Flue Duct
Mark the duct to the length required, this length allows for
expansion, see diagram 4.6 for rear flue and diagram 4.7 for
side flue, then cut square and remove any burrs.
4.8 Air Duct/Terminal
Mark the duct length, see diagram 4.8 for rear flue and diagram
4.9 for side flue, then cut square and remove any burrs.
4.9 Air Duct/Terminal and Flue Duct Assembly
Locate the flue duct into the air duct/terminal, see diagram 4.10.
Take the flue manifold from the loose items pack together with
the sealant. Place the sealant onto the flue manifold.
Fully locate the flue manifold in to the air duct/terminal and flue
duct assembly as shown in diagram 4.10, make sure the correct
alignment of the "Top"s.
Drill two 3mm diameter holes through the air duct/terminal to the
flue manifold secure with the two self tapping screws supplied
in the loose items pack.
It should now not be possible to remove the manifold.
FLUE
DUCT
221972A
4 Flue and Appliance Preparation
Q
Diagram 4.6
BOILER
CENTRE
LINE
LONG FLUE
TERMINAL
Q
14
T MINUS 188mm
Diagram 4.7
STANDARD FLUE
TERMINAL
Q PLUS 5mm
Diagram 4.8