Flare-FF-50 vent calculation example based on the manual:

Vent path from Survey:

  • 3 ft up from the fireplace

  • 45 elbow

  • 1ft

  • 45 elbow up

  • 15 ft vertical up

  • Vertical cap

Y vertical calculation

A – First Flue length = 3 = 3 ft
B – Vertical Flue length = 1 +15 = 16 ft
C – Roof Terminal = 1 = 1.5 ft
H – Small Elbow (45°) = 2 = 2 ft

Y Axis Parameters = 22.5 ft

Flare-FF-50 vent cal

X Horizontal calculation

D – Horizontal Flue length = 1 ft
E – Elbow (90°) = 0
F – Elbow (lying 90°) = 0
G – Wall Terminal =0

X Axis Parameters = 1

Flare-FF-50 vent cal