DuraVent FasNSeal 8090 Installation - Manual (Page 6)

6
If the lower tee or wye needs to be replaced,
determine the existing brand of B Vent. If
the B Vent is DuraVent, the appropriate Tee
or Wye can be purchased and connected as
is. If the B Vent is not DuraVent, purchase a
"Female Adapter" which allows connection to
non-DuraVent B Vent, and the DuraVent tee
or wye desired.
1. Remove the Cat I appliance being
replaced, the associated B Vent pipe, and
existing termination cap.
2. Measure vent run, cut flex to length,
ensure 1 ft of excess flex. Remove burrs from
flex for ease of install.
TOP (CAP) side of install:
3. Route flex through B Vent, leave 8" excess
at top. Ensure flex does not go beyond 45
degree anywhere along the vent run for
proper condensate handling. Ensure flex is
installed so the arrow goes in direction of
exhaust flow
4. Connect flex to termination cap:
4a. If installing 2" Flex: Flip the
termination cap upside down and apply
a generous amount of high temperature
non-hardening silicone around the outer
flange edge of the FNS Flex Collar (Fig.5a).
Once applied, flip the termination cap back
upright and carefully lower cap onto flex
so that the silicone flange is seated inside
the 2” flex. Tighten hose clamp to secure
the flex to the termination cap.
4b. If installing 3”-5” flex: Run the flex
through the termination cap until flex is
¾” from exit at the top of the cap. Tighten
the hose clamp to secure the flex into
position. Apply a generous bead of high
temperature non-hardening silicone
(Fig.5b) to seal flex to the inner diameter
of the termination cap.
5. Lower cap to B-Vent and affix with
hardware / mount straps to the vent pipe.
Strap can be trimmed if desired.
6. Compress / Install Bird Screen Ring into
Flex collar groove. (Fig.5a/b)
Figure 5a- 2" Flex
Figure 5b- 3"-5" Flex
APPLY SEALANT
SLIDE FLEX
UP TO
SEAL
APPLY SEALANT
APPROX 3/4"
FROM TOP
BIRD-SCREEN
Figure 6- Appliance Side
Connection
3"-5"
APPLY
SEALANT
POLYPRO
/ FLEX
ADAPTER
FIRESTOP
BIRD-SCREEN