Справочник Пользователя для Vermont Casting DV360

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When using  twist lock pipe it is not necessary to use 
sealant on the joints. The only areas of the venting 
system that need to be sealed with high temperature 
silicone sealant are the sliding joints of any telescopic 
vent section used in the system.
To join twist lock pipes together, simply align the beads 
of the male end with the grooves of the female end, 
twisting the pipe until the flange on the female end 
contacts external flange on the male end. It is recom-
mended that you secure the joints with three (3) sheet 
metal screws, however, this is not mandatory with twist 
lock pipe. (Fig. 18)
To make it easier to assembly the joints, we suggest 
putting a lubricant (Vaseline or similar) on the male end 
of the twist lock pipe prior to assembly.

TWL100

Twist Lock Pipe

3/12/99   djt

Male End

Female End

Screw Holes

TWL100

Fig. 18  Twist-lock pipe joints.

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

vent pipe exiting through the outer wall.  Using this 
dimension on the Sidewall Vent Graph (Fig. 19), 
locate the point intersecting with the slanted graph 
line. 

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

line to the bottom of the graph.

3.  Select the indicated dimension, and position the 

fireplace in accordance with same. 

EXAMPLE A: 
If the vertical dimension from the floor of the unit is 11’ 
(3.4m) the horizontal run to the face of the outer wall 
must not exceed 14’ (4.3m).
EXAMPLE B: 
If the vertical dimension from the floor of the unit is 7’ 
(2.1m), the horizontal run to the face of the outer wall 
must not exceed 8¹⁄₂’ (2.6m).

Horizontal dimension from the outside face of the 

wall to the center of the fireplace vent flange

V

ertical dimension form the fl

oor of the unit to 

the center of the horizontal vent pipe

Fig. 19  Sidewall venting graph. (Dimensions in feet)

When installed as a rear vent unit this appliance may be 
vented directly to a termination located on the rear wall 
behind the appliance.
•  Only CFM Corporation venting components are 

approved to be used in these applications (See 
‘Venting Components’ listed for different installation 
requirements).

•  The maximum horizontal distance between the rear 

of the appliance (or end of the transition elbow in a 
corner application) and the outside face of the rear 
wall is 20” (508mm). (Fig. 20, 21)

•  Only one 45° elbow is allowed in these installations.
•  Minimum clearances between vent pipe and com-

bustible materials are as follows:

 

Top - 2” (51 mm)

 

Sides - 1” (25 mm)

 

Bottom - 1” (25 mm)