NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
10
NOTES:
• Adjust Leveling Bolts if Necessary: Two leg leveling bolts are installed
into existing holes in the bottom rear of appliance. Turn the leveling bolts
to adjust for correct height.
• Refer to Vent Manufacturer Installation Instructions.
B-Vent System Components
The following fl ex liner kits are available for relining the existing fi replace
(see Figures 17 & 18).
WARNING: Do not substitute the heat-rated (UL 1777) liner
with any other type liner or a fi re may result causing property
damage, personal injury or loss of life.
Installation Steps:
1) Cut the fl ex liners as required
.
2) Connect the liner to the collar on the termination cap.
3) Install fl ashing.
4) Insert liner into chimney, passing through the damper opening.
5) Install termination cap.
6) Remove the screw from the front of the detachable draft hood (see
Figure 12). Slide the draft hood off the back (see Figure 13).
Detachable Draft Hood
Figure 11
Figure 12
Never install termiation below the wall or parapet when distance
is less than 10 ft. as shown below
wall or parapet
wall or parapet
No height above
wall or parapet is
required when dis-
tance is greater
than 10 ft.
7) Strech the liner just enough to prevent the possibility of sagging or
coiling in the fl ue. Cut off excess liner.
8) Attach the fl ue pipe or chimney fl ex liner to the draft hood collar
using a stainless steel hose clamp (see Figure 14). Note: Mill-pac, high
temperature silicone and/or screws may also be used to secure the liner
to the collar (hose clamp must also be used). Ensure that the draft hood
assembly is level with the insert top for attachment.
Figure 13
2 ft. (610 mm)
minimum
Remove Screw using a 1/4"
nut driver or equivalent
Vertical Termination Height Minimum
(Factory Built and Masonry Fireplaces)
The vent termination clearances above the high side of an angled roof
is as follows:
8 (2.4)
7 (2.1)
6 (1.8)
5 (1.5)
4 (1.2)
3 (0.9)
2 (0.6)
1 (0.3)
0 (0.0)
2/12
4/12
6/12
8/12
10/12
12/12
14/12
16/12
18/12
Table 8
Feet (meters)
Roof Pitch
Lennox Hearth Products - 4" B-Vent Kits
Cat. No.
Model
Description
H0906
VKBVI25
Vent Kit, BVI, 4" X 25 ft.
H0907
VKBVI35
Vent Kit, BVI, 4" X 35 ft.
Table 9
Summary of Contents for EVB125
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