Kenmore 153.33204 User Manual

19

The vent system must terminate so that proper clearances are maintained 
as cited in local codes or the current edition of the National Fuel Gas 
Code, ANSI Z223.1/NFPA 54, 7.3.4e and 7.8a,b, as follows:

1.  The exit terminals of a mechanical vent system shall be not less 

than 7 feet (2.13 m) above grade when located adjacent to public 
walkways, see Figure 23.

2.  A venting system shall terminate at least 3 feet (91 cm) above any 

forced air inlet located within 10 feet (3.1 m), see Figure 23.

3.  The venting system shall terminate at least 4 feet (1.2 m) below, 4 feet 

(1.2 m) horizontally from or, 12 in. (30 cm) above any door, window 
or gravity air inlet into any building. 

 

The manufacturer also recommends that the vent termination should 
not be installed closer than 3 feet (91 cm) from an inside corner of 
an L shaped structure and not be less than 12 in. (30 cm) above 
grade.  

 

The vent shall terminate a minimum of 12’’  (30.5 cm) above expected 
snowfall level to prevent blockage of vent termination, see Figure 
23.

4.  In cold climates, it is recommended that vent termination not be 

mounted directly above or within 3 feet (91 cm) horizontally from an oil 
tank vent or gas meter to avoid potential freeze-up from condensation, 
see Figure 23.

Plan the vent system layout so that proper clearances are maintained 
from plumbing and wiring.

Vent pipes serving power vented appliances are classifi ed by building 
codes as “vent connectors”.  Required clearances from combustible 
materials must be provided in accordance with information in this 
manual under FACTS TO CONSIDER ABOUT THE LOCATION and 
VENT TERMINAL INSTALLATIONS, and with the National Fuel Gas 
Code and local codes.

1.  After the point of termination has been determined, use the cover 

plate as a template to mark the hole for the vent pipe to insert  through 
the wall. BEWARE OF CONCEALED WIRING AND PIPING INSIDE  
OF WALL.

2.  If the Vent Terminal is being installed on the outside of a fi nished wall, 

it may be easier to mark both the inside and outside wall.  Align the 
holes by drilling a hole through the center of the template from the 
inside through to the outside.  The template can now be positioned 
on the outside wall using the drilled hole as a centering point for the 
template.

3.  A)  MASONRY SIDE WALLS
 

Chisel an opening approximately one half inch larger than the marked 
circle.

 
 

B)  WOODEN SIDE WALLS

 

Drill a pilot hole approximately one quarter inch outside of the marked 
circle.  This pilot hole is used as a starting point for a saws-all or sabre 
saw blade.  Cut around the marked circle staying approximately  one 
quarter inch outside of the line.  (This will allow the vent  pipe to easily 
slide through the opening.  The resulting gap will be covered up by  
the vent  terminal cover plates.)  Repeat this step on inside wall if 
necessary.

4.  When the vent piping cannot pass through an outside wall at a 

height greater than or equal to 12” above the ground (or above snow 
accumulation level), then the installation can be modifi ed as shown 
below.