Specifications

S20
S30
S40
S50
S60
S70
U20
U40
U60
S80
U80
Bends must be fitted at a distance of at least 50% of the total heat exchanger e.g. for a 60ft long heater, the closest to the burner a bend can be is 30ft.
Figure . 8. Possible Heater Orientations