installation guide

UK IRL

Appendix A: Example calculation

Calculation 1:

Calculating horizontal extension fig. 2a:

Flue length C + E = 1m + 1m 2 m

Total horizontal extension

Measure or calculate effective height (Hvert)

Flue length A

4 m

1 m

Total effective height 2 m

Always check if the calculated situation is allowed

(see appendix B: Flue restrictor)

Calculation 2:

Calculation horizontal extension fig. 2b:

Flue length J + L = 0,5 + 0,5

Elbows K + M = 2m + 2m

Terminal

Total horizontal extension

Calculation effective height (Hvert)

1 m

4 m

1 m

6 m

Always check if the calculated situation is allowed

(see appendix B: Flue restrictor)

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