Enviro S50 - Venting Requirements and Configurations; Direct Vent System Specifications; Vent Pipe Clearances to Combustibles

28
Initial Installation
QUALIFIED INSTALLERS ONLY
A 1” (25 mm) clearance to combustibles must be maintained around any vertical vent pipe. Around a
horizontal vent pipe, the clearance to combustibles should be 2” (51 mm) above and 1½” (38 mm) on the
sides and bottom. When combustible materials are directly above a 90° elbow, 3” (76 mm) of clearance are
necessary.
Framing
Joists/Studs
10”
10”
The conguration of the venting pipes depends on the locations
of walls, ceilings, and studs. However, the pipes cannot be of
arbitrary length and arrangement. Because the length of the
vertical and horizontal sections dramatically aects the burning
eciency of the replace, certain guidelines have been set in
the vent conguration sections starting on page 32. Venting
terminals can not be recessed into a wall or siding.
WARNING: This gas appliance must not be connected
to a chimney ue serving a separate solid-burning
appliances.
Figure 46: Vent Framing For Wall or Ceiling.
DiRect vent
WARNING: This appliance has been designed to draw room air for proper heat circulation
from the bottom of the unit, and out the top front. Blocking or modifying these openings in
any way can create hazardous situations�
The vent length for the S50 must be between 21” (53.3 cm) and 40 ft (12.2 m). This model is vented with
co-axial 4” intake, 6 5/8” exhaust aluminum or stainless steel approved rigid vent leading into a vertical or
horizontal termination cap. The ue collar of this model will t inside of a standard 4” x 6 5/8” vent and must be
either correctly interlocked or fastened, with three screws directly to the vent.
Check periodically that the vents are unrestricted. Also ensure that all direct vent pipes have been properly
sealed and installed after routine inspection or cleaning. The air intake and exhaust pipes must be installed in
the correct location on top of the S50.
aPPRoveD venting PaRts
The S50 replace has been tested and certied for
use with the venting systems shown in Table 3 &
Table 4. Refer to the table below for part numbers
of commonly used parts for both venting systems.
For more venting parts please visit the respective
manufacturers’ website.
Manufacturer Trade Name Nominal Sizes
ICC EXCELDirect
4” x 6 5/8”
M&G DuraVent DirectVent Pro
Selkirk Direct-Temp
Amerivent Direct Vent
venting cLeaRances
Table 2: Vent Pipe Minimum Clearances.
Vertical Pipe to
the Side Walls
Horizontal Pipe to
the Sides & Bottom
Above an Elbow
Above the Unit
Above an Elbow
Not Above the Unit
Above Horizontal
Vent Pipe
Wall Frame 8”
(203mm) or less
Hard
Pipe
1”
(25.4 mm)
1½”
(38.1 mm)
3”
(76.2 mm)
3”
(76.2 mm)
2”
(51 mm)
10”x10”
(25x25cm)
A 10” (254 mm) x 10” (254 mm) frame (see Figure 46) will assure the proper support and spacing for the
vent pipe as it passes through the wall. Installations in Canada require that a wall thimble be used for passing
through walls and ceilings. All sealing and vapour barriers must comply with local building codes.
Table 3: Approved Vent Manufacturers