Heatline SARGON 18S Installation, Servicing And User Instructions Manual page 21

10.10 On installing the horizontal fl ue, determine the required length of the outer air duct
by measuring the distance 'L' (fi gure 14) from the face of the external wall to the bottom
of the larger socket of the boiler's elbow connecting collar.
NOTE: The measurement for the inner fl ue duct will be 'L' + 10mm and the maximum length
of horizontal fl ue is 5.0m excluding the elbow connected to the boiler.
10.11 When fi tting the terminal measuring from the back of the terminal connection,
mark the distance 'L' onto the outer air duct. (fi gure 14)
10.12 Cut the outer air duct only to the required length ensuring that the cut is square and
free from burrs.
10.13 Measuring from the back of the terminal connection, mark distance 'L' + 10mm
(fi gure 15) onto the inner fl ue duct and cut the duct to size, ensuring that the cut is square
and free from burrs.
10.14 Pass the fl ue assembly through the wall and connect the assembly to the boiler,
ensuring that both the air and fl ue duct joints are fully pushed home into the connecting
elbow's collar.
10.15 With the fl ue and joints secured fi t the fl ue trim to the external wall surface using
a suitable mastic.
NOTE : Where there is no external access to the fl ue terminal the fl ue trim must be attached
to the fl ue assembly prior to passing the assembly through the wall.
10.16 The vertical system diagram is shown in fi gure 16.
NOTE: Maximum vertical fl ue length is 5.0m.
17
Waste
Figure 14
L+10mm L+20mm
Figure 15
External
wall face
L
L