A.O. Smith 197835-001 Manuel D’Utilisation

21

For installations in the City of Los Angeles, California Category IV

PVC Pipe such as that manufactured by Brownline Pipe Company,

must be used as vent pipe material.

vent terMInals supplIed wIth heater Must Be used.
NOTE:  BEFORE  BEGINNING  INSTALLATION  OF  ANY 

VENT  PIPE  READ  THE  VENT  PIPE  MANUFACTURER’S

INSTALLATION INSTRUCTIONS.
1.  After  the  points  of  termination  have  been  determined, 

use  the  cover  plates  as  templates  to  mark  the  holes  for 

the vent pipes to be inserted through the wall. BEWARE OF

CONCEALED WIRING AND PIPING INSIDE OF WALL. If the 

vent terminals are being installed on the outside of a finished

wall,  it  may  be  easier  to  mark  both  the  inside  and  outside

wall. Align the holesby 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 holes

as a centering point for the template.

    A.)  MASONRY  SIDE WALLS  Chisel  an  opening  approximately 

   

1/2” (1.3 cm) 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  by  the 

   

vent  terminal  cover  plates.)  Repeat  this  step  on  the 

     

inside wall if necessary.

2.  Cut a length of 3” PVC pipe about 3.5” (8.9 cm) longer than the 

 wall thickness at the opening.

3.  Glue the intake vent terminal to the section of the pipe.

4.  Slide the wall plate over pipe to stop against intake vent terminal.

5.  Place a bead of caulking (not supplied) around the gap between 

 the  pipe  and  the  wall.  Place  some  of  the  caulking  on  the 

 back of the plate to hold it against the wall after installation.

6.  If the vent pipe is installed up to the wall, with a coupling on the 

 end against the wall opening, the pipe with the vent terminal can 

 be prepared for gluing before inserting through the wall. Slide the 

 pipe through the wall and insert into coupling on the other side of 

 the wall, making sure that the vent terminal ends up pointed in the 

 correct position (Figure 19).

1.  Proper support must be provided for all pipe protruding through 

  the roof.

2.  The vertical roof terminations should be sealed with a plumbing 

 roof boot or equivalent flashing.

3.  The intake vent termination and the exhaust vent termination must 

 penetrate the same side of roof.

4.  The center line of the intake vent termination and the center 

 line  of  the  exhaust  vent  termination  must  be  no  closer 

 than 24” (61cm).

5.  The intake vent terminal and the exhaust vent terminal must be 

 oriented facing downward and the same direction.

The specifications are displayed in Figures 20 & 21.

NOTE:  Exhaust  vent  terminal  is  installed  using  the  same

procedure.