27
C. In the attic, slide the vent pipe collar down to cover up the open end of the shield and tighten. This will
prevent any materials, such as insulation, from filling up the 1" (2.5mm) air space around the pipe.
4.2 using flexible vent components
! WARNING
DO NOT ALLOW THE INNER FLEX PIPE TO BUNCH UP ON HORIZONTAL OR VERTICAL RUNS AND ELBOWS.
KEEP IT PULLED TIGHT.
SPACERS ARE ATTACHED TO THE INNER FLEX PIPE AT PREDETERMINED INTERVALS TO
MAINTAIN AN EVEN AIR GAP TO THE OUTER FLEX PIPE. THIS GAP IS REQUIRED FOR SAFE
OPERATION. A SPACER IS REQUIRED AT THE START, MIDDLE AND END OF EACH ELBOW TO
ENSURE THIS GAP IS MAINTAINED. THESE SPACERS MUST NOT BE REMOVED.
For safe and proper operation of the appliance, follow the venting instructions
All inner fl ex pipe and outer fl ex pipe joints may be sealed using high temperature
red RTV silicone W573-0002 (not supplied) or the high temperature sealant W573-
0007 Mill Pac (not supplied). However, the high temperature sealant W573-0007
Mill Pac (not supplied) must be used on the joint connecting the inner fl ex pipe
Spacers
Use only approved flexible vent pipe kits mark ed:
and the exhaust fl ue collar.
“Wolf Steel Approved Venting” or “E2” as identified by the stamp on the flex pipes.
4.2.1 horizontal air terminal installation
A. Stretch the inner flex pipe to the required length taking into account
ADD FASTENER TYPE
the additional length needed for the finished wall surface. Apply
a heavy bead of the Mill Pac sealant (W573-0007) (not
supplied) to the inner sleeve of the air terminal. Slip the
vent pipe a minimum of 2” (50.8mm) over the inner
sleeve of the air terminal and secure with a minimum
Using the outer flex pipe, slide over the outer
combustion air sleeve of the air terminal and secure with
a minimum of 3 screws. Seal using red RTV silicone
(W573-0002) (not supplied).
Insert the vent pipes through the firestop maintaining the
required clearance to combustibles. Holding the air terminal
(lettering in an upright, readable position), secure to the exterior
wall and make weather tight by sealing with caulking (not
If more vent pipe needs to be used to reach the fireplace,
couple them together as illustrated. The vent system must be
supported approximately every 3 feet (0.9m) for both vertical
and horizontal runs. Use non-combustible strapping to
maintain the minimum clearance to combustibles.
The air terminal mounting plate may be recessed into the exterior
wall or siding no greater than the depth of its return flange.
W415-1679 / D / 03.09.18