Installation Guide
22
ZERO-CLEARANCE FIREPLACE 
INSTALLATIONS 
1. Manufacturer’s Instructions: Carefully 
read and comply with the manufacturer’s 
installation instructions for your replace. Be 
sure that DuraTech is approved for use with 
your appliance.
2. Anchor Plate: Attach an Anchor Plate 
to the replace top with (4) 5/8” sheet metal 
screws (Fig 31). Check with the appliance 
manufacture about the use of high temperature 
sealants. 
3. Chimney Sections: Attach a Chimney 
Section to the Anchor Plate by twist-locking 
clockwise. 
4. Completion: Install the remainder of the 
chimney as instructed for a standard Ceiling-
Supported installation, (using a Firestop 
Radiation Shield in the 1st oor ceiling instead 
of the Support Box). Always maintain at least 
2 inches of clearance to combustibles, and 
enclose the chimney where it passes through 
occupied areas. 
CONNECTION FROM APPLIANCE 
TO CHIMNEY SYSTEM
1.  Single Wall Stovepipe:  If single wall stovepipe 
is desired, DuraVent’s “DuraBlack” single-wall 
stovepipe is recommended. The connection 
to the Ceiling Support Box, or Finishing Collar 
is made with a DuraBlack Slip Connector or a 
Snap-Lock Adapter. The beaded end of the Slip 
Connector or Snap Lock Adapter slips into the 
opening in the Ceiling Support or Finishing Collar.  
Align the tabs on the Slip Connector or Snap 
Lock Adapter with the notches in the face of the 
Support Box or Finishing Collar, push it in and 
rotate to lock it in place.  Further instructions for 
assembling DuraBlack Stovepipe are contained in 
their shipping cartons.  Remember, the minimum 
clearance to combustibles for single wall stovepipe 
is 18 inches.
2.  Close Clearance Connector Pipe (DVL):  
DuraVent manufactures a close clearance 
connector pipe, also referred to as “DVL”.  DVL 
may be positioned as close as 6 inches to a 
combustible wall, and as close as 8 inches to 
a combustible ceiling, provided the appliance 
installation instructions permit this distance.  In 
order to join this type of connector to the Support 
Box or Finishing Collar, a DVL/DuraBlack Chimney 
Adapter is required. The DVL/DuraBlack Chimney 
Adapter slips into the opening in the Support Box 
Figure 30
Figure 31
ANCHOR
PLATE
MASONRY 
ANCHOR BOLTS (4) 
REQUIRED 
(NOT FURNISHED)
EXISTING 
MASONRY 
CHIMNEY 
WITH LEVELED 
SURFACE
HIGH TEMP 
SEALANT
MAINTAIN 1 INCH MIN 
CLEARANCE FROM ANCHOR 
PLATE TO COMBUSTIBLES
SHEET METAL 
SCREWS 
(4 REQUIRED)
CHIMNEY 
SECTION
ANCHOR 
PLATE
NOTE:
Follow local 
building code 
requirements 
for connecting 
factory-built 
chimney to 
masonry 
replaces.










