Lennox Hearth B-Vent Elite LBV-3824MP-H - Manual (Page 4)

4 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Venting
Gas Vent Rule – Gas vent caps are not permit-
ted within 8 feet (2.4 mm) of a vertical wall or
similar obstruction. Gas vent caps that are
located 8' or more from a portion of a building
which extends at an angle greater than 45
°
upward from the horizontal may terminate in
accordance with
Table 1 (Figure 3), provided
that in no case shall any discharge opening on
the cap be less than 2' (610 mm) horizontally
from the roof surface (National Fuel Gas Code
ANSI Z223.1 (NFPA 54) 7.6.2) (CAN/CGA
B149).
CLEARANCES
Minimum clearance to combustibles for the ap-
pliance is as follows: sides and back -
¹⁄₂" (13
mm), floor - 0" (0 mm), adjacent wall - 0" (0 mm),
ceiling - 37
¹⁄₂" (953 mm).
APPLIANCE SPECIFICATIONS
Figure 2
Table 1
Note: Venting terminals shall not be recessed
into a wall or siding.
Flat to 6/12 1' 0" 0.3
Over 7/12 to 9/12 2' 0" 0.6
Over 10/12 to 12/12 4' 0" 1.2
Over 13/12 to 16/12 6' 0" 1.8
Over 17/12 to 21/12 8' 0" 2.4
Roof Slope
Minimum Height
from Roof to Lowest
Discharge Opening
Feet Meters
Figure 3
Roof Pitch is X/12
12
X
Minimum Height from Roof
to Lowest Discharge Opening
25 ⁵⁄₈"
Gas Line
Access
Left Side View Right Side View
49 ³⁄₄"
25 ⁵⁄₈"
Top View
Gas Line
Access
Junction
Box
3 ¹⁄₂"
7 ¹⁄₄"
10 ¹⁄₂"
6 ¹⁄₂"
3 ¹⁄₄" 15 ¹⁄₂"
11"
Combustion
Air Inlet
Front View
11 ¹⁄₂"
3824 - 38"
4324 - 43 ¹⁄₂"
24 ⁵⁄₈"
8"
8"
B-Vent 9 ³⁄₄"
25 ⁵⁄₈"
44 ¹⁄₈"
12 ⁷⁄₁₆"
44 ¹⁄₈"
3824 - 5"
4324 - 4 ³⁄₈"
Electrical Outlet
3824 - 26 ⁵⁄₁₆"
4324 - 31 ¹⁄₁₆"
3824 - 48"
4324 - 52 ³⁄₄"
3824 - ⁵⁄₈"
4324 - ¹⁄₂"
49 ³⁄₄"
3824 - 48"
4324 - 52 ³⁄₄"