2-3-8 Installing flue (Flue Options - Horizontal Flue Systems)
Twin & Vertical Flue Systems
1. Maximum permissible equivalent flue lengths are:-
2. Any additional " in lin" bends in the flue system must be taken into consideration
Their equivalent lengths are:-
Concentric Pipes:
Twin Flue Pipe
130 bend
0.5 metres 135 bend 0.25 metres
93 bend
1.0 metres 91.5 bend 0.50 metres
The elbow supplied with the standard horizintal telescopic flue kit is not included any equivalent length
calculations
NOTE : Flue length is measured from point X to as shown
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