UTICA BOILERS UCS-380 Installation, Operation & Maintenance Manual page 26

A.
Separated Horizontal Flue Termination Installation
Options: See Figure 6-9
Maximum length of intake vent (L 1) shall not exceed 49 ft
(15.00 m) -
(L1 + L2) max = 100 ft (30 m)
B.
Spring Clamp Instructions - See Figure 6-11
Manufacturer recommends use of a spring clamp at every
push-fit gasket connection when using a polypropylene vent.
Follow vent manufacturer instructions or, if unavailable, below
when installing spring clamps:
• Take dual flue spring clamp with larger hole in it and place
it onto male end of pipe.
• Slide clamp all the way down the pipe with smaller opening
of clamp towards female end of the pipe.
• Bend clamp over the female end of pipe "A" and slide male
end of pipe "B" through clamp and into female end of pipe
"A".
This clamp is necessary for the dual flue pipe. Dual
Note
flue spring clamp is for indoor use only and should
not be used in outdoor applications.
C.
Two Pipe Vent Support - See Figure 6-12
All venting must be supported every 4' (1m) using steel
strapping or equivalent.
Slope vent towards boiler approximately 3/4" (2 cm) for every
3' (1.0 m)
Equivalent Length of Dual Flue Elbows :
FIGURE 6-13- Dual Flue Minimum Termination Distances - For Termination Kits
6 - COMBUSTION AIR AND VENT PIPING
26
FIGURE 6-11 - Spring Clamp
FIGURE 6-12 - Two Pipe Vent Support
P/N 240011662, Rev. D [06/30/2017]