Vermont Casting 36XDV User Manual

16

FP1005
Side View Vent Termination
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Finished Wall

Vent 

Termination

FP1005

Fig. 25  Side view of final unit location.

Follow Steps 1 and 2 on Page 15.

Install the 4” (102 mm) flex vent pipe to the appliance 
collars described in “General Information Assembling 
Vent Pipes”, Page 11.  If the installation requires a 45° 
angle, grasp the vent pipe close to the appliance collar 
and bend to 45°. DO NOT exceed 45°. (Fig. 26)
Install the 7” vent pipe in the same manner as Step 2.

FP1473
corner flex install
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Termination

Flex Section

Appliance Collars

FP1473

Fig. 26  Grasp the vent pipe close to the collar and bend to 
45° angle. Do not exceed 45°.

NOTE: There must be a 1/2” (13 mm) rise in a 12”   
(305 mm) length of flex vent. 

Assemble the flex vent to the collars on the termination 
as you did on the appliance.

FP1472
rise in length
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FP1472

Fig. 27  There must be a 1/2” rise per foot length.

Rise

Since it is very important that the venting system 
maintain its balance between the combustion air 
intake and the flue gas exhaust, certain limitations 
as to vent configurations apply and must be strictly 
adhered to.
The Vent Graph shows the relationship between vertical 
and horizontal side wall venting and will help to deter-
mine the various dimensions allowable. 
Minimum clearance between vent pipes and com-
bustible materials is 1”(25 mm) on top, bottom and 
sides unless otherwise noted.
When vent termination exits through foundations less 
than 20” below siding outcrop, the vent pipe must 
flush up with the siding. It is always best to locate the 
fireplace in such a way that minimizes the number of 
offsets and horizontal vent length.
The horizontal vent run refers to the total length of vent 
pipe from the flue collar of the fireplace to the face of 
the outer wall.
Horizontal plane means no vertical rise exists on this 
portion of the vent assembly.