28881 Rev G
10
01-02
NOVUS REAR DIRECT VENT
d. Three Elbows
Figure 9 shows various venting configurations
using three elbows to terminate horizontally. A
minimum of a one foot vertical is required any
time 90° elbows are used when rear venting the
appliance. The maximum vertical run is 20 and
the maximum horizontal run is 18.
e. Assembling Chimney Sections
Use only pipe supplied and listed for use with
this appliance. See page 3 for a description of
listed components. See Section 3 on page 15 for
instructions on assembling the vent sections.
f.
Installing the Interior Wall Shield (WS6)
Frame a hole in a combustible wall for an interior
wall shield, as shown in Figure 10 whenever a
wall is penetrated. This shield maintains
minimum clearances and prevents cold air
infiltration.
The termination cap location must meet all local
and national codes and not be easily blocked or
obstructed. See Figure 14, page 12.
If the hole being penetrated is of non-combustible
materials, a 9 diameter hole as acceptable.
Secure the shield to the framing as shown in
Figure 11.
The last section of vent may require cutting,
depending upon wall thickness and appliance
location. The cap should overlap the vent sections
by at least 1-1/2. See Figure 12.
Figure 9
Three Elbows
g. Installing the Rear Vent Heat Shield
For horizontally terminated rear vent appliances,
the flue heat shields MUST be placed 1 above
the top of the vent between the wall shield and
base of the termination cap. The shields are
attached to the wall shield and base of the cap
with two screws each. When installed, the caps
shield will rest under the wall shields shield.
The shields must have at least 1/2 overlap. See
Figure 13. Depending on the installation, the
shields may be too long and will require trimming.
If the shields are too short, material must be
added or a longer HS1 Heat Shield can be used
in place of the shield attached to the cap.
Note:
Exterior wall thickness must be a minimum
of 4 to a maximum of 17-1/2
Figure 10 - Exterior Wall Hole
Figure 11 - Interior Wall Shield
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