4
LP-362 Rev. 7.30.20
connection between the appliance and the flexible vent must be done with a rigid vent system. Follow the
specific instructions supplied with these products.
•
Common venting of more than one appliance is not allowed.
•
No other gas-burning appliance may be vented in the same chase/chimney with the flexible vent system.
•
The maximum length, correct diameter, and number of fittings must be in conformance with the
specifications of the appliance manufacturer’s instructions.
•
The venting systems must be installed with correct distance to combustibles.
•
Check for proper joint construction.
Additional instructions for termination:
•
The vent system must terminate at least 2’ (0.6 m) above the roof line or any wall or vertical structure
within 10’ (3 m).
•
Do not install an extra rain cap on the terminal. The terminals are specially designed for high efficiency
boilers which produce large quantities of moisture due to condensation of combustion gases. This design
allows rain to enter the terminals which also serves to dilute acidic condensate.
•
Follow the specific mounting instructions at the end of this manual.
E. INSTALLATION
Special notes:
•
The flexible liner must be treated carefully at low temperatures (<5
o
C) (<41
o
F).
•
Check all parts for possible shipping damage.
•
Rotate the components slightly to assist assembly.
Installation procedure for flexible flue liners:
1. Determine the required location of the opening in the shaft. Ensure the flue access cut-out meets the minimum
specified size to allow manual assembly of connections within the flue. The slope of the connecting flue pipe must
have a minimum of 3
o
(equivalent 1.9”/ft.) (5cm/m).
2. Fix the elbow support bracket (Fig. 1) with 4 screws on the wall of the chimney
or chase.
3. The length of the flexible liner can be determined in two ways: 1) Use a rope
with a small weight on the end to measure shaft length. Add 16 inches (.4 m)
extra length for each bend. The flexible liner can be shortened with a saw or
scissors by cutting in a groove. 2) Correct liner length can also be determined
after installing the liner in
the shaft and cutting it as
the top of the chimney or
chase (see Fig. 10,
Dimension B).
4. When required, a coupling (Fig. 2) can also be used to
connect two lengths of
flexible liner together. This piece can be ordered as an
accessory (Part #8400P-
005).
Figure 1 – Fixing the Support
Bracket
