22
22
Table 4: Vent termination clearances
Minimum Clearance
Description
3 ft (0.9 m)
Clearance above the highest point where it passes through a roof surface, refer to
Figure 28.
24 in (0.6 m)
Clearance above
a roof ridge, any other portion of a building, or any other obstruc-
tion within a horizontal distance of 10 feet (3 m), refer to Figure 28.
5 ft (1.5 m)
Clearance for a
vent or chimney above either the highest connected appliance
drafthood outlet, or flue collar.
6 ft (1.83 m)
Clearance to mechanical air supply inlet.
3ft (0.9m)
Clearance to each side of center line extended above meter/regulator assembly.
6 ft (1.83 m)
Radial clearance around service regulator vent outlet.
12 in (30 cm)
Clearance above grade, verandah, porch, deck, or balcony.
3 ft (0.9 m)
Clearance to a building opening or combustion air inlet of another appliance, ex
-
cept with the approval of the authority having jurisdiction for the following reduced
clearances.
9 in (0.23 m)
Exception for inputs up to and including 50,000 Btu/h (15kW)
12 in (0.3 m)
Exception for inputs exceeding 50,000 Btu/h (15kW) but not exceeding 100,000
Btu/h (30kW)
V
enting
f
iRepLace
i
nseRts
:
The Enviro E20 may be installed and vented into any solid fuel fireplace that has been installed in
accordance with the National, Provincial/State and local building codes and has been constructed of non-
combustible materials. Before starting, refer to
i
niTial
i
nsTallaTion
- P
reParing
y
our
e20 f
or
i
nsTallaTion
.
Please reference the information in Table 4 and Figures 35, and 38.
An approved chimney liner and rain cap must be used. A throat connector or flashing
must be installed to
ensure a tight seal, top performance, safety and efficiency. Carefully follow the manufacturer’s instructions
that accompany the chimney liner kit. Use Flexmaster double walled aluminum flex vent (3” flex conversion
piece and 4”x 6 5/8” cap) from any of the following approved products; American Metal Products (Amerivent
Direct), Security Chimneys (Secure Vent), Selkirk Metalbestos (Direct-Temp), Simpson Dura-Vent (Direct
Vent GS), and (ICC Excel Direct). If necessary, remove the vent collar plate from the top of the insert and
connect it securely to the liner with sheet metal screws and/or hose clamps.
Check for any tears in the liner at this point. IMPORTANT: The screws that hold the vent collar plate in
its approved position must be installed. Provide for proper and adequate venting and air supply for this
appliance in accordance with the tables in the current National Fuel Gas Code, Z223.1/NFPA 54 or the
CSA B149.1.
NOTE:
If the E20 unit is pulled out of its installation, and the vent air intake system is disconnected for
any reason, ensure that the vent-air intake pipes are re-sealed with high-temperature sealant or silicone
and reconnected with three (3) sheet metal screws evenly spaced.
Initial Installation
QUALIFIED INSTALLERS ONLY
2ft (0.6m)
Minimum
3ft (0.9m)
Minimum
Within
10ft (3m)
Roof ridge or
any other portion
of a building
Figure 35: Roof Clearances.
