If fitting a Plume Displacement Flue Kit, the air inlet must be a minimum of 150mm from any opening windows or doors
Fig. 13
page 31
5.3.8 Horizontal Flue/Chimney Systems
1.
The standard telescopic flue is suitable only for horizontal termination applications. It allows for lengths between 315mm and 500mm from elbow to terminal without the
need for cutting
(Fig.
2.
All fittings should be fully engaged. The approximate engagement is 40mm. Apply the lubricant supplied to the seal on each fitting to aid assembly.
3.
Maximum permissible Horizontal Concentric equivalent flue lengths are:-
(60/100) (80/125)
6 metres 12 metres
4.
Any additional 'in line' bends in the flue system must be taken into consideration. Their equivalent lengths are:-
135° bend 0.5 metres
93° bend 1.0 metres
5.
The elbow supplied with the standard horizontal telescopic flue kit is not included in any equivalent length calculations.
Flue length is measured from point (i) to (ii) as shown below.
Read this section in conjunction with the Flue Accessories & Fitting Guide supplied with the boiler.
That document includes details of vertical flue/chimney systems and Plume Displacement Kits.
Horizontal Flues
25 of 55
14). Extensions of 250mm, 500mm & 1m are available.