Using Rigid Vent Components; Horizontal Air Terminal Installation; Extended Horizontal And Corner Terminal Installation - Napoleon WHD31N Installation And Operating Instructions Manual

4.4

USING RIGID VENT COMPONENTS

The vent system must be supported approximately every 3 feet (0.9m) for both vertical and horizontal runs.
Use Wolf Steel Ltd. support ring assembly or equivalent noncombustible strapping to maintain the minimum
clearance to combustibles for both vertical and horizontal runs.
All inner exhaust and outer intake vent pipe joints may be sealed using either red high temperature silicone
sealant W573-0002 (not supplied) or black high temperature sealant W573-0007 Mill Pac (not supplied) with
the exception of the appliance exhaust fl ue collar which must be sealed using Mill Pac.

4.4.1 HORIZONTAL AIR TERMINAL INSTALLATION

RISK OF FIRE, DO NOT ALLOW LOOSE MATERIALS OR INSULATION TO TOUCH THE VENT PIPE.
REMOVE INSULATION TO ALLOW FOR THE INSTALLATION OF THE ATTIC SHIELD AND TO
Move the appliance into position. Measure the vent
A.
length required between terminal and appliance
taking into account the additional length
needed for the fi nished wall surface and any
1¼" (31.8mm) overlaps between venting
components.
Apply high temperature sealant W573-0007
B.
(not supplied) to the outer edge of the inner collar
of the appliance. Attach the fi rst inner rigid pipe
component and secure using 3 self tapping screws.
Repeat using the outer rigid pipe.
Holding the air terminal (lettering in an upright, readable
C.
position), secure to the exterior wall and make weather tight by sealing with caulking (not supplied).
The air terminal mounting plate may be recessed into the exterior wall or siding no greater than the
depth of the return fl ange.

4.4.2 EXTENDED HORIZONTAL AND CORNER TERMINAL INSTALLATION

A 45° corner installation must have a rise between the appliance combustion
air collar and the air terminal. In this case a minimum vertical rise of 24"
(609.6mm) is required.
A. Follow the instructions for "HORIZONTAL AIR TERMINAL INSTALLATION"
section.
B. Continue adding components alternating inner and outer vent pipes. Ensure that
all inner vent pipes and elbows have sufficient vent spacers attached and each
component is securely fastened to the one prior. Attach the telescopic sleeve to the
vent run. Seal and secure. To facilitate completion, attach inner and outer couplers to the
air terminal.
C. Install the air terminal. See "HORIZONTAL AIR TERMINAL INSTALLATION" section. Extend the outer
telescopic sleeve; connect to the air terminal assembly. Seal and fasten with self tapping screws.
WARNING
!
MAINTAIN CLEARANCES TO COMBUSTIBLES.
SCREWS
#10x2"
CAULKING
OUTER
RIGID
PIPE
AIR TERMINAL
20" (508mm)
COUPLER
23
25.1A
1" (25.4mm)
OVERLAP
HI-TEMP
INNER
SEALANT
RIGID
PIPE
#8x1/2"
SELF DRILLING
SCREWS
26.4A
TELESCOPIC SLEEVE
VENTING
48.4A
W415-1337 / 06.23.14
EN