User's Manual
8 Ussc
VENT INSTALLATION/ASSEMBLY PROCEDURE
Step 1) DirectVent Pro pipe and fi ttings are designed with special twistlock connections. To connect the venting system to the
appliance fl ue outlet, a twist-lock Appliance Adaptor is required. The adaptor will be supplied for installation in the fi eld.
Assemble the desired combination of Pipe Sections and Elbows to the Appliance Adaptor.
Notes:
1. Twist-lock procedure: Line up locking lugs on male and female ends of pipe sections. Insert the male end of pipe into the female
end until the locking lugs are covered. Twist the female end clockwise an eighth of a turn to lock sections together. Three screws
are required to secure the joint, ensure they do not penetrate the inner wall of the vent pipe.
2. Horizontal runs of vent pipe must be supported to prevent any downward sags. Horizontal pipe sections should be supported at
least every 4-feet. Wall Straps can be used for this purpose.
3. Seal all joints with high temperature silicone.
Step 2) With the appliance adaptor and pipe section attached to the appliance, slide the appliance into its correct location, and mark
the wall for a hole of the appropriate size. The center line of the pipe should line up with the center of the hole. Cut and
frame the hole in the exterior wall where the vent will be terminated. A Wall Thimble is required.
Notes:
1. The horizontal run of venting must be level, or have a 1/4-inch rise for every 1-foot of run towards the termination. Never
allow the vent to run downward. A downward slope can trap heat and become a possible fi re hazard.
2. The location of the Horizontal Vent Termination on an exterior wall must meet all local and national building codes, and must
not be easily blocked or obstructed. Termination clearances as shown in the VENT TERMINATION CLEARANCES section.
MALE
END
FEMALE
END
SCREWS
You must use the Duravent FasNSeal Concentric Vent System designed to work with this appliance from United States Stove
Company.
DO NOT substitute other venting systems.
The 3” x 5” horizontal square termination kit (35CVS-KUS) includes:
1. 3” x 5” stove adapter
2. Adjustable Horizontal Square Cap 35CVS-HZSQ
3. Wall Thimble 35CVS-WT
A source of fresh air shall be provided when required. To ensure this make sure that the intake to the concentric vent system is
clear of all obstructions during use.
Exterior Wall Thimble
Duravent Fasnseal Concentric Vent System
Twistlock Procedure
Concentric Vent Attachment
Adjustable Horizontal Square Cap