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If the support extends above the roof, cut it flush
with the top of the roof. Nail the support to the
frame opening using (8) 3" spiral nails or #8 x
1-1/2" screws.
Note: If you are using a 6" square support you
may find it difficult to screw it in place
because it is fairly small inside.
Simpson Dura-Vent has provided angle brackets
with this support which can be screwed to
the outside of the support box and nailed
to surrounding framing as required. Use a
minimum of four #8 x 1/2" screws per bracket.
In some cases these brackets may need to be
trimmed (e.g.: to fit under a flashing). Place the
Finish Collar around the support and fasten it
to the ceiling using the screws provided.
3. Use appropriate roof flashing.
flashing under the upper shingles and on top
of the lower shingles approximately half of the
flashing should be under the shingles.
4. Assemble the desired lengths of Black Pipe and
Elbows necessary to reach from the appliance
adaptor up through the support box and flashing
to proper height as per Dia. 12, local codes or
the "Rigid Pipe Venting Arrangements" section.
Ensure that all pipe and elbow connections are
in their fully twist lock position.
5. Ensure vent is vertical and secure flashing to the
roof with roofing nails. Slide the storm collar
over the pipe section and seal with a mastic.
6. Twist lock the vent cap on to the last section.
Support Extensions - Round (RDSE)
or Square (SQSE)
Steep pitched cathedral ceilings may require the
use of a support extension. This piece fits down
inside the support and can be adjusted to increase
the support's length by up to 22". The extension is
attached to the support using the eight metal screws
provided. Be sure there is at least a 2 inch overlap
where the extension joins the support.
CONVERTING A
CLASS-A METAL
CHIMNEY TO A DIRECT VENT
SYSTEM
General
There are two different types of direct vent.
Prior to installation and connection of the vent
system to a factory-built chimney, the chimney
must be inspected and thoroughly cleaned by
a qualified service person, such as a certified
chimney sweep or home inspection service.
The direct vent system must not be connected
to a damaged factory-built chimney.
For factory built zero clearance chimneys
Place the
cleanout doors and caps or plugs for cleanout
tee fittings and ash dumps shall be secured in
place and sealed before installing a Direct Vent
system within the chimney.
If the appliance shuts off during operation,
contact a qualified service person to determine
if a negative pressure and/or leaky chimney
condition exists. Do not operate the appliance
until the problem is corrected.
Approved for US Installations Only
The use of an existing chimney as an air intake
is not covered under the CSA 2.17-2017, Z21.88-
2017 • CSA 2.33-2017 test methods and the
resulting ITS/WHI product certification. The code
Authority Having Jurisdiction must be consulted
prior to proceeding with this installation method.
Converting a Factory Built Metal
Chimney
1. Remove the existing chimney cap.
2. Measure the distance from the top end of the
chimney to the bottom of the ceiling support box,
add 3" (76mm) to this measurement, and cut
a section of the 4" flex pipe to that length (the
flex should already be extended to its nominal
length).
3. Connect the end of the flex pipe section to the
underside of the Top Adaptor using 3 sheet
metal screws.
Diagram 2.
4. Pass the flex pipe down through the center of
the chimney system, and center the adaptor
on the top of the chimney pipe. Drill four 1/8"
diameter holes through the adaptor and into the
chimney top. Insure that you are in fact, drilling
into the metal on the chimney. Twist-lock the
Termination Cap onto the Adaptor. (Diagram 3
and 4).
Regency
U39-11 ULTIMATE™ Freestanding Gas Stove
®
installation
Diagram 1
Diagram 2
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