1
78D0011
WDV Series Gas Fireplace
VentInG InstallatIOn
V
V
V
V
V
V
V
X
X
X
D
E
B
B
B
C
B
M
B
A
J
K
F
L
VENT TERMINATION
AIR SUPPLY INLET
AREA WHERE TERMINAL IS NOT PERMITTED
H
I
Fixed
Closed
Operable
Operable
Fixed
Closed
V
B
CFM145a
DV Termin Location
5/01/01 Rev. 12/05/01
sta
INSIDE
CORNER DETAIL
V
A
G
CFM145a
General VentInG InFOrMatIOn - terMInatIOn lOcatIOn
A = Clearance above grade, veranda, porch,
1” (30 cm)
1” (30 cm)
deck, or balcony
B = Clearance to window or door that may be
6” (15 cm) for appliances
6” (15 cm) for appliances
opened
< 10,000BTU/h (3kW), 1” (30 cm)
< 10,000 BTU/h (3kW), 9”
for appliances > 10,000 Btuh (3kW) and
(3 cm) for appliances > 10,000
< 100,000 BTU/h (30kW), 36” (91 cm)
Btuh (3kW) and < 50,000 BTU/h
for appliances > 100,000 BTU/h (30kW)
(15kW), 1” (30 cm) for
appliances > 50,000 BTU/h(15kW)
C = Clearance to permanently closed window
1” (305 mm) recommended to
1” (305 mm) recommended to
prevent window condensation
prevent window condensation
D = Vertical clearance to ventilated soffit located
above the terminal within a horizontal
18” (458 mm)
18” (458 mm)
distance of ’ (610mm) from the center
line of the terminal
E = Clearance to unventilated soffit
1” (305 mm)
1” (305 mm)
F = Clearance to outside corner
see next page
see next page
G = Clearance to inside corner (see next page)
see next page
see next page
H = Clearance to each inside of center line
3’ (91 cm) within a height of 15’ (5 m)
3’ (91 cm) within a height of 15’
extended above meter/regulator assembly
above the meter/regulator assembly
(5 m) above the meter/regulator
assy
I = Clearance to service regulator vent outlet
3’ (91 cm)
3’ (91 cm)
J = Clearance to nonmechanical air supply inlet 6” (15 cm) for appliances < 10,000
6” (15 cm) for appliances
to building or the combustion air inlet to any BTU/h (3kW), 1” (30 cm) for
< 10,000 BTU/h (3kW), 9”
other appliances
appliances > 10,000 BTU/h (3kW) and
(3 cm) for appliances > 10,000
< 100,000 Btuh (30kW), 36” (91 cm)
BTU/h (3kW) and < 50,000 BTU/h
for appliances > 100,000 BTU/h (30kW)
(15kW), 1” (30 cm) for
appliances > 50,000 BTU/h(15kW)
K = Clearance to a mechanical air supply inlet
6’ (1.83 m)
3’ (91 cm) above if within 10'
(3 m) horizontally
L = Clearance above paved sidewalk or paved 7’ (.13 m)†
7’ (.13 m)†
driveway located on public property
M = Clearance under veranda, porch, deck or
1” (30 cm)
1” (30cm)
balcony
1 In accordance with the current CSA-B149 Installation Codes
In accordance with the current ANSI Z3.1/NFPA 54 National Fuel
Gas Codes
† A vent shall 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 sides beneath the floor:
canadian Installations
1
us Installations
2
NOTE: 1. Local codes or regulations may require different
clearances.
. The special venting system used on Direct Vent Fireplaces
are certified as part of the appliance, with clearances
tested and approved by the listing agency.
3. MHSC assumes no responsibility for the improper
performance of the appliance when the venting system
does not meet these requirements.
Figure 8 -
Termination Locations
