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01-03
9
34617 Rev D
NANOV TOP DV GAS APPLIANCE INSTALLATION INSTRUCTIONS
Note:
Exterior wall thickness must be a
minimum of 4 to a maximum of 23½.
Figure 11
Interior Wall Shield
Figure 12
Venting Through the Wall
WARNING - RISK OF FIRE!
Always maintain minimum air space clearances or
greater around the chimney system. The flow of
combustion and ventilation air must not be
obstructed.
CAUTION:
A vinyl soffit shield (VSS2) should be installed if a
cap is within 30 of a vinyl soffit.
Figure 10
Exterior Wall Hole
c. 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.
Secure the wall shield to the framing as shown
in Figures 11 and 12.
The termination cap height must meet all local
and national codes and not be easily blocked or
obstructed.
If the material being penetrated is of
noncombustible materials, a 9 diameter hole is
acceptable.
d. Termination
Vent termination must not be recessed in the wall or siding. Siding may be brought to the edge of the cap base.
Install the cap as shown in Figure 12. Cap pipe sections should overlap the vent pipe by 1½ inches. Caulk
outside edges of cap.
Local codes may require the installation of a shield (CS) which prevents the cap from accidentally touching
anything or anyone.
Figure 13 illustrates cap locations prescribed by current
ANSI Z273.1
and
CAN/CGA-B149 Installation Codes
.
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