Monessen Hearth 3000 SERIES User Manual
Page 18
V
V
E
E
N
N
T
T
I
I
N
N
S
S
T
T
A
A
L
L
L
L
A
A
T
T
I
I
O
O
N
N
16
For Horizontal Termination
Figure 16: Horizontal Vent Termination Location
#
A=12 inches
Clearance above the grade, a veranda, porch, deck, or balcony
#
B=12 inches
Clearance to window or door that may be opened.
C=12 inches
Clearance to permanently closed window.
D*=18 inches
Vertical clearance to ventilated soffit located above the terminal within a horizontal
distance of 2 feet from the centerline of the terminal.
E*=18 inches
Clearance to unventilated soffits.
F=9 inches
Clearance to an outside corner.
G=6 inches
Clearance to an inside corner.
#
H=3 feet
Not to be installed above a gas meter/regulator assembly within 3 feet horizontally from
the centerline of the regulator.
#
I=6 feet
Clearance to service regulator vent outlet.
#
J=12 inches
Clearance to non-mechanical air supply inlet to building or the combustion air inlet to
any other appliance.
#
K=6 feet
Clearance to a mechanical air supply inlet
#
L**=7 feet
Clearance above a paved sidewalk paved driveway located on public property.
#
M***=12 inches Clearance under veranda, porch, deck, or balcony.
#
As specified in CGA B149 Installation Codes. Note: Local codes or regulations may
require different clearances.
*
30” minimum for vinyl clad soffits
**
A vent must not terminate directly above a sidewalk or paved driveway, which is
located between two single-family dwellings and serves both dwellings.
***
Only permitted if veranda, porch, deck, or balcony is fully open on a minimum of 2
sides beneath the floor.