
19
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Horizontal Vent InstallationIMPORTANT NOTES:1.  All  Ravelle™ 30 gas  fireplaces that are  horizontally terminated 
may only use 6-5/8” x 4” direct-vent pipe by Security Chimneys™ 
or Dura-Vent®.
2.  When  this pipe passes through a wall,  a wall thimble - Security 
Chimneys part number SV4RSM or Dura-Vent part number 942 is 
required. The hole in the wall for the wall thimble should be 9-1/4” 
wide by 10-1/4” high.
3.  Horizontal runs of vent must be supported every three feet.  Wall 
straps - Security Chimneys part number SV4BM or Dura-Vent part 
number 988 are available for this purpose.
4.  If  the vent passes through a ceiling or floor, a firestop  - Security 
Chimneys part number SV4BF or Dura-Vent part number 1263 - is 
required.
5.  Also note that venting terminals shall not be recessed into a wall 
or siding. If installing the termination cap on a wall covered with 
siding, a vinyl siding standoff  - Security Chimneys  part number 
SV4VS or Dura-Vent part number 1250 - or furring strips must be 
used to ensure that the termination  cap is not recessed into  the 
siding.
6.  The horizontal run of vent must have a 1/4” (6 mm) rise for every 
one foot of run towards the termination.
7   If the wall  being  penetrated is  constructed of  non-combustible 
material, such as masonry block or concrete, a 7-1/2” (191 mm) 
diameter hole is acceptable and a wall thimble is not required.
8.  The location of the horizontal vent termination on an exterior wall 
must meet all local and national building codes and must not be 
blocked or obstructed. For allowable  external vent terminations 
locations, see the diagram on Page 23.
9.  Allowable clearances from the vent pipe to combustible materials 
must be maintained. See Page 10 for these clearances.
10.  Do not  locate the  termination cap  where it  may be  blocked by 
shrubbery or snow.
Figure 16Vertical Vent InstallationFigure 17Elbow
Termination Cap
Security Chimneys (Part # SV4CHC)
Dura-Vent® (Part # 984)
9-1/4”x 10-1/4”
(235mm x 260mm)
Framed Hole
Wall Thimble
Security Chimneys (Part #SV4RSM)
Dura-Vent (Part #942)
Note:
Verify that you 
have at least the 
minimum clearance 
to combustibles at the 
roofline.
Vertical Termination Cap
Security Chimneys (Part #SV4CGV)
Dura-Vent (Part  # 980)
Flashing
Security Chimneys (Part #SV4FA 
or SV4FB)
Dura-Vent (Part  # 943 or 943S)
Storm Collar
Security Chimneys (Part #SV4FC)
Dura-Vent (Part  # 953)
Roof- Maintain 1” 
(25mm) Clearance to 
Combustibles
Ceiling Minimum
Framing 10” x 10”
(254mm x 254mm)
Ceiling Firestop
Security Chimneys (Part # SV4BF)
Dura-Vent (Part  # 963)
Pipe 
Length