Page 37
In order to prevent steam condensing on the duct inner walls the
lances should be inst alled according to the fo llowing dimen-
sions:
*
„k“
is the necessary drill diameter in the duct wall
A duct wall thickness of 30mm is assumed. If
„m“
is larger than
30mm, then the distance
„q“
, is to be reduced by the difference
m-30mm
.
After the lance is positioned, an angle is positioned on the oppo-
site duct wall side at the same height. The screws are self tap-
ping. Then the necessary threaded bar length
„y“
is measured.
y = z + 20mm
Warning:
a gap
x“
between bar end and duct inner wall must be
present in order to accomodate a lance lateral expansion.
Warning:
Steam lances from code
2 on
must be supported at
the end.
Dimension [mm]
F
k
m
q
Type DDS 20
M10
38
30
20-80
Type DDS 40
M10
54
30
20-80
Summary of Contents for DDS20
Page 1: ...Steam Injection Humidifiers DDS for existing steam nets DDS ENZ DDS EN Manual...
Page 55: ......
Page 56: ...12 2004...
