Venting; Overview - Valor MADRONA MF28JN Installation Manual

Venting

Top or Rear Facing Take-Off
This appliance is supplied with a top facing take-off
which may be converted to a rear facing one with no
extra parts required—see Vent Outlet page 19 for details.
Vent Material
This appliance is approved for installation using
4 x 6-5/8-inch co-axial direct vent pipe and accessories
as listed in Approved Venting Components pages 33–34.
This appliance may also be converted to co-linear
venting with two 3-inch flex pipes (rear facing take-off
only) for use in solid-fuel burning fireplaces and
chimneys using approved adapers and accessories.
Instructions for co-linear conversion are packaged with
the co-linear adapter. See Co-Linear page 16 and
Approved Venting Components pages 33–34.
Follow the installation instructions supplied with the
individual venting accessories.
Do not mix components from different manufacturers.
Do not cut pipe lengths; use adjustable lengths instead.
Vent Sealing
Seal all outer co-axial pipe and elbow joints, including
sectioned elbow joints, using high quality, high temper-
ature 2-inch wide self-adhesive aluminum foil tape
(Nashua-322-2 brand or similar). Wrap the tape com-
pletely around all outer joints and press firmly to seal.
A high-temperature black silicone sealant may be used
in the outer joints as a substitute to foil tape.
Ensure all the pipe joints have a minimum of 1-1/4 inch
overlap.
Tape all
OUTER joints
(including all
elbow joints)
Wall Thickness
The appliance vent is suitable for penetrating a
combustible wall assembly up to 14 inches in thickness.
A non-combustible wall can be of any thickness up to
the maximum horizontal run of vent pipe allowed for
the particular installation.
10
Framing Vent in Combustible Walls & Ceilings
When penetrating through combustible walls and
ceilings, frame a minimum of 10 inches x 10 inches
opening and ensure that the insulation is kept clear of
the vent pipe using either a wall thinble or an attic
insulation shield. Also, seal all joints between the wall
plates, the wall and the vent pipe. Follow the installation
instructions supplied with the individual venting
components.
Align the vent
center to the
center of the
frame
10" (254 mm)
All horizontal pipe runs must be graded 1/4 inch
per foot upwards in the direction of the exhaust
flow. The final pipe length, when terminating
through the wall may be graded downwards slightly
to prevent water migration.
Important Installer Notice—
Weather Sealing & Vapor Barrier
It is the installer's responsibility to ensure that vent
installations through exterior walls are caulked and
weatherproofed in such a manner as to:
• Prevent rain from entering the wall from the
weather side by adequately caulking the outer
vent plate to the exterior wall surface.
• Prevent moisture inside the home from penetrat-
ing into the wall structure by ensuring the inside
wall plate is adequately sealed to the inside vapor
barrier.
• Prevent rain water and moisture from entering
the walls by sealing the joints between the outer
vent tube and the inner and outer wall plates.
We recommend the use of a high quality
polyurethane sealant.

Overview

10" (254 mm)