Monessen Hearth CDV7 User Manual

17

The  Vent  Graph  should  be  read  in  conjunction  with  the 
following vent installation instructions to determine the re-
lationship between the vertical and horizontal dimensions 
of the vent system.
1.  Determine  the  height  of  the  center  of  the  horizontal 

vent pipe exiting through the outer wall.  Using this di-
mension on the Sidewall Vent Graph, Figure 13, locate 
the point intersecting with the slanted graph line. 

.  From the point of this intersection, draw a vertical line 

to the bottom of the graph.

3.  Select the indicated dimension, and position the fire-

place in accordance with same. 

exaMple a: 
If the vertical dimension from the floor of the unit is 11’ (3.4 
m) the horizontal run to the face of the outer wall must not 
exceed 14’ (4.3 m).
exaMple B: 
If the vertical dimension from the floor of the unit is 7’ (.1 
m), the horizontal run to the face of the outer wall must not 
exceed 8’ (.4 m).
Refer to Page 24 for snorkel requirements.

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eg: A

FP2291
vent graph

X

V

ertical Dimension from the Floor of Unit to the Center of 

the Horizontal V

ent Pipe

Horizontal Dimension From the Outside of Termination to 

the Back of the Fireplace

X = " minimum for 33" Model
X = 5Z\v" minimum for 36", 4" and 47" Models
(Floor to center of horizontal pipe)