Vertical Installation; Using Flexible Vent Components - Napoleon HD81NT Installation And Operating Instructions Manual

3.3

vErTICAL INSTALLATION

This application occurs when venting through a roof. Installation kits for various roof pitches are available from your
Authorized dealer / distributor. See accessories to order specific kits required.
A. Determine the air terminal location, cut and frame 14 1/2" square opening in
the ceiling and the roof to provide the minimum 2" clearance between the vent
pipe and any combustible material. Try to center the vent pipe location midway
between two joists to prevent having to cut them. Use a plumb bob to line up
the center of the openings.
DO NOT FILL THIS SPACE WITH ANY TYPE OF MATERIAL.
A vent pipe shield will prevent any materials such as insulation, from filling
up the 2" air space around the pipe. Nail headers between the joist for extra
support.
B. Apply a bead of caulking W573-0002 (not supplied) to the
framework or to the Wolf Steel vent pipe shield plate or equivalent
(in the case of a finished ceiling), and secure over the opening in
the ceiling. A firestop must be place on the bottom of each
framed opening in a roof or ceiling that the venting system
passes through. Apply a bead of caulking W573-0002 (not supplied) all around and place a firestop spacer over the
vent shield to restrict cold air from being drawn into the room or around the fireplace. Ensure that both spacer and
shield maintain the required clearance to combustibles. Once the vent pipe is installed in its final position, apply
sealant between the pipe and the firestop assembly.
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 2" air space around the pipe.
3.4

uSINg FLExIBLE vENT COmpONENTS

Do not allow the 8" flex vent pipe to bunch up on horizontal or vertical runs and elbows. Keep it pulled tight.
A 3/4" air gap between the 8" and 10" flex vent pipes all around is required for safe operation. A spacer is
required at the start, middle and end of each elbow to ensure this gap is maintained.
Spacers are attached to the 8" flex vent pipe at predetermined intervals to maintain a 3/4" air gap to the 10" flex
ELBOW
fIGURE 3.4
Ten inches (10") is the minimum bend radius allowed for the ten inch (10") diameter flexible liner.
GD36 FIRESTOP SLEEVE ASSEMBLY
fIGURE 3.3b
!
vent pipe. These spacers must not be removed.
For safe and proper operation of the fireplace, follow the venting
instructions exactly.
All 8" flexible vent pipe and 10" flexible vent pipe joints may be sealed
using high temperature sealant W573-0002 (not supplied) or the high
temperature sealant W573-0002 Mill Pac (not supplied). However, the
SPACERS
high temperature sealant W573-0007 Mill Pac (not supplied) must be used
on the joint connecting the 8" flexible vent and the exhaust flue collar.
Use only approved flexible vent pipe kits marked:
VENT PIPE
SHIELD
WARNING
"Wolf Steel Approved Venting"
as identified by the stamp on the
10" flexible vent pipe.
fIGURE 3.3a
14 1/2"
14 1/2"
FIRESTOP
UNDERSIDE OF
JOIST
fIGURE 3.3c
COLLAR
CAULKING
VENT PIPE
SHIELD
W415-0687 / 12.02.08
17
VENT
PIPE