Flange to flange length adjustment can range from 7”x 281/2”
NOTE:
If the flue is too long to fit into the adjacent section of duct without
interfering with the flow path, it should be trimmed to desired
flange to flange length plus an overlap of 4” with the inner wall of
the inlet end duct section. The minimum overlap for the outer casing
is 1” with the inlet end section outer wall.
(See Figure 33 & 35a).
NOTE:
If an LV joint must be joined to one of these fittings, the unflanged
end of the tube should always point downward or towards
downward slope.
Figure 33 - Overlap Details for Variable Length
INSTALLATION STEPS FOR THE VARIABLE LENGTH (LV)
(DSLS-DSLD)
Step 1
- Measure the distance X required for the variable length. See
Figure 34.
Figure 34-Step 1 for Installation of Variable length
Step 2
- Cut the inner wall at the dimension X found at the first Step plus
4”. See
Figure 35a.
Step 3
- Cut the split outer casing on the opposite side of the flanged half
at dimension X plus 1’’. See
Figure 35b.
Figure 35a -Step 2 -
Cut of the Sliding Inner Wall
Figure 35b - Step 3 -
Cut of the Outer Casing
Cut Split Outer
casing to X + 1”
Cut Sliding Inner
Wall to X + 4”
Distance ”X”
23
