Vermont Casting DBT36 Manuel D’Utilisation

10002789/0 

-13- 

DBT33/DBT36/DBT39

Locate vent opening on the wall.  It may be necessary to 

rst position the replace and measure to obtain hole location.  

Depending on whether the wall is combustible or non-combus-

tible, cut opening to size. (Fig. 22) 
(For combustible walls rst frame in opening. Fig. 22).  

COMBUSTIBLE WALLS :  Cut a 9-3/8"H x 9-3/8"W (240 

mm x 240 mm) hole through the exterior wall and frame as 

shown (Fig. 22).
NON-COMBUSTIBLE WALLS :  Hole opening should be 

7.5" (190 mm) in diameter.
STEP 2

Measure wall thickness and cut zero clearance sleeve parts to 

proper length (MAXIMUM 12” / 305 mm).  Assemble sleeve 

and attach to restop with #8 sheet metal screws (supplied).  

Install restop assembly (Fig. 23).
Zero clearance sleeve is only required for combustible walls.

Place replace into position.  (Fig. 24).  Measure the vertical 

height (X) required from the base of the ue collars to the 

centre of the wall opening.  

Apply a bead of silicone to the inner and outer ue collars of 

the replace and using three (3) screws attach an appropriate 

length of vent to the replace.  Follow with the installation of 

the inner and outer elbow, again secure joints as described in 

the section 'Joining DV Components'.
STEP 5

Measure the horizontal length requirement including a 2" (50 

mm) overlap, i.e. from the elbow to the outside wall face plus 

2" (50 mm)(or the distance required if installing a second 90º 

elbow. (Fig. 25).
Always install horizontal venting on a level plane.

Fig. 22

Fig. 23

Fig. 24

Fig. 25