Armstrong ERS-LC Series Manual page 14

Please ensure that spaces and distances are respected. If you have any doubts about these calculations, please
contact us.
H1 = 4.33 in.(110 mm) = Minimum height between the duct floor and the axis of the steam pipe.
H2 = 5.51 in.(137 mm) = Minimum for a standard mounting /4.33 in.(110 mm) minimum for a stair mounting.
H3 = 6.30 in.(160 mm) = Minimum height between the axis of the dispersion tube and the top of the duct wall.
The H3 distance can be 3.15 in.(80 mm) at the shortest if the steam pipe is installed at a 30° angle.
In the case of a stair mounting, minimum distance between tubes = 100 mm. (3.9 in)
Air flow direction
Fig. E 2-3: Minimum heights & flow directions
Designs, materials, weights and performance ratings are approximate and subject to change without notice. Visit armstronginternational.com for up-to-date information.
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