UTICA BOILERS UCS-380 Installation, Operation & Maintenance Manual page 24

FIGURE 6-5 - Maximum Equivalent Length
Maximum Length = L
A B
C D
E F
G
H
FIGURE 6-6 (A-H)
• Illustrations show examples of maximum equivalent
lengths. See Figure 6-5.
D.
Concentric Vent Screw Placement - See Figure 6.7
Fasten two screws through outer intake pipe behind the
gaskets at equal distances approx. 180º apart.
Note - screws used must be no larger than No.8 - 1/2" sheet
metal screws and must be zinc coated. Length of this screw
FIGURE 6-7 - Concentric Vent Screw Placement
6 - COMBUSTION AIR AND VENT PIPING
21' (6.4 m)
17' 8" (5.4 m)
21' (6.4 m)
14' 5" (4.4 m)
17'8" (5.4 m)
Before securing screws, verify pipe is pushed in
Note
a minimum of 1 ¾" (45mm) into gasketed end of
the other pipe.
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P/N 240011662, Rev. D [06/30/2017]