Pro is a unitized, coaxial (concentric) venting system designed for use
with direct vent gas or propane stoves, heaters, and fireplaces.
Materials and Construction
aluminum inner wall. .018″ galvanized steel outer wall. Painted outer
walls made of laserwelded .018″ galvalume steel. Caps also available in
stainless steel and copper. Outer pipe brings combustion air to the
appliance. Inner pipe exhausts flue gases to the outside. Gaskets or
sealants not required (unless specified by the appliance manufacturer).
Specified by the appliance manufacturer.
4″ x 6 5/8″ and 5″ x 8″.
Pro, in combination with the gas appliance, has been tested and listed
as a decorative gas appliance system or as a direct vent heater system
by a major testing agency, such as UL, CSA, Warnock Hersey, or OMNI.
Check with your appliance manufacturer for approval.
Refer to our Typical Venting Installation drawings to select the appropriate component parts for your installation.
More Typical Installations:
|1||Vertical Termination Cap|
|4||Cathedral Ceiling Support Box|
|7||Class A Chimney Conversion Kit|
|10||Horizontal Termination Cap|
|11||Snorkel Termination Cap|
|14||Co-Axial to Co-Linear Connector|
|15||Masonry Chimney Conversion Kit|
Planning Your Installation:
vertical gas stove installations, measure the height from the stove
outlet to the ceiling to determine the length of black pipe required.
Select a ceiling support/wall thimble cover or a cathedral ceiling
|2||To determine the length of
galvanized pipe required, measure the ceiling thickness and the vertical
rise in an attic or second story. Firestops are required at each floor
level beyond the first floor ceiling support/wall thimble cover or
cathedral ceiling support box. If an offset is required to avoid
obstructions, use a pair of 45° elbows. For proper support, use elbow
straps with offsets. Use wall straps for long vertical runs. Attic
Insulation Shield is required in attic.|
|3||Measure the roof pitch. Select the proper flashing and storm collar. Determine the minimum height above the roof.|
horizontal installations, check the appliance manufacturer’s
instructions for minimum rise and maximum horizontal run. A snorkel
termination may be used if height restrictions prevent adequate rise
above the appliance. Select the appropriate Horizontal Termination Cap
(see appliance manufacturer installation instructions). To protect vinyl
siding, select vinyl siding standoff. Check appliance manufacturer’s
instructions for wall thimble and firestop requirements.|
following design recommendations are general guideline to assist in the
design and selection of venting components for your installation.
Always follow DuraVent Installation instructions enclosed with the cap
or support box before installing your chimney system. Installation
instructions can be viewed online at www.duravent.com, under Catalogs
and Instructions. Important: Check the manufacturer’s rating plate and
instruction manual to confirm that the DuraVent direct vent system is
approved for use on the brand name appliance you have selected.
- The inner and outer pipe diameters should match the outlet size of the appliance.
the appliance manufacturer’s installation instructions to confirm which
types of vent configurations are permitted (i.e. horizontal, vertical,
chimney reline, etc.). Also, check for any venting restrictions such as
maximum horizontal run, minimum and maximum vertical rise, maximum
- Be fire safe! Maintain at least the minimum
clearances (air-space) between the vent pipe and nearby combustibles, as
specified in the appliance manufacturer’s installation instructions.
Use proper support and bracing. Follow local building codes and have
your venting system inspected.