Lennox ENVY Installation Instructions Manual page 7

LENNOX HEARTH PRODUCTS • SIGNATURE
Table 6: Exterior Horizontal Vent Termination Clearances
*
See Item D in the Text Below.
*18 in.
Horizontal
Termination
B
V
L
A Clearance above grade, veranda, porch, desk, or balcony
B Clearance to window or door that may be opened
f i r e - p a r t s . c o m
C Clearance to permanently closed window
D Vertical clearance to ventilated soffit located above the
termination within a horizontal distance of 18 in. (458 mm)
E Clearance to unventilated soffit
F Clearance to outside corner
G Clearance to inside corner
H Clearance to each inside of center line extended above
meter / regulator assembly
I Clearance to service regulator vent outlet
J Clearance to nonmechanical air supply inlet to building or
the combustion air inlet to any other appliance
K Clearance to a mechanical air supply inlet
L Clearance above paved sidewalk or paved diveway located
on public property
M Clearance under veranda, porch, deck or balcony
N Depth of alcove (maximum)
O Clearance to termination (alcove)
P Width of alcove (minimum)
Q Clearance to combustible above (alcove)
* In accordance with the current CSA-B149.1 National Gas And Propane Installation Code
** In accordance with the curent ANSI SZ223.1/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 two sides beneath the floor
• 2 in. clearance to non-combustibles for SV4.5HT-2 only
SERIES DIRECT-VENT GAS FIREPLACES • ENVY/ENVY CD 35/40/45 • INSTALLATION INSTRUCTIONS
®
Exterior Wall
V
6 in. Ventilated Soffit
A
Inside Corner
Detail D
B
C
V
Fixed V
Closed
Window
V
F
C
B
V
C
C
A
X = Air Supply Inlet
V = Vent Termination
U.S. Installation **
12 in. (300 mm) **
6 in. (150 mm)
for appliances < 10,000 Btuh (3 kW),
9 in. (230 mm)
for appliances > 10,000 Btuh (3 kW), and < 50,000 Btuh (15 kW),
12 in. (300 mm)
for appliances > 50,000 Btuh (15 kW) **
9 in. (229 mm)
recommended to prevent window condensation
18 in. (458 mm)
12 in. (305 mm)
30 in. (760 mm) to vinyl soffit
5 in. (127 mm)
minimum
2 in. (50.8 mm)
minimum—SV4.5HT-2 •
6 in. (152 mm)
minimum—SV4.5HTSS
36 in. (910 mm)
within a height of 15 ft above the meter / regulator assembly **
36 in. (910 mm)**
6 in. (150 mm)
for appliances < 10,000 Btuh (3 kW),
9 in. (230 mm)
for appliances > 10,000 Btuh (3 kW) and < 50,000 Btuh (15 kW),
12 in. (300 mm)
for appliances > 50,000 Btuh (15 kW)**
36 in. (910 mm) above if within 10 ft (3 m) horizontally **
84 in. (2130 mm) ‡
12 in. (300 mm) *‡
72 in. (1830 mm) **
6 in. (15.2 mm) **
36 in. (910 mm) **
18 in. (457 mm) **
DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
NOTE: Local Codes Or Regulations
May Require Different Clearances.
NOTE: Location Of The Vent Termination
Inside
Must Not Interfere With Access To The
Corner Detail
Electrical Service.
G
V
= 9 in. (in U.S.)
A
= 12 in. (in Canada)
3 ft.
X
A A
Operable
Window
3 ft.
J
B B
= Area where Termination is not Permitted
P
N N
O
V
Q
H
D E
V
M
V
I
Canadian Installation *
12 in. (300 mm) *
6 in. (150 mm)
for appliances < 10,000 Btuh (3 kW),
12 in. (300 mm)
for appliances > 10,000 Btuh (3 kW)
12 in. (305 mm)
recommended to prevent
window condensation
18 in. (458 mm)
12 in. (305 mm)
30 in. (760 mm) to vinyl soffit
5 in. (127 mm)
minimum
2 in. (50.8 mm)
minimum—SV4.5HT-2 •
6 in. (152 mm)
minimum—SV4.5HTSS
36 in. (910 mm)
within a height of 15 ft above the meter /
regulator assembly *
36 in. (910 mm)*
6 in. (150 mm)
for appliances < 10,000 Btuh (3 kW),
12 in. (300 mm)
for appliances > 10,000 Btuh (3 kW)
72 in. (1830 mm) *
84 in. (2130 mm) ‡
12 in. (300 mm) *‡
72 in. (1830 mm) *
6 in. (15.2 mm)*
36 in. (910 mm) *
18 in. (457 mm) *
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