Waterford Appliances T25-LP - Manual (Page 21)

Waterford TARA T25 Direct Vent Freestanding Gas Stove 21
CATHEDRAL CEILINGS
Round Support (RDS) &
Square Support (SQS)
If your home has a cathedral ceiling (no attic
space between the ceiling and the roof), install
the chimney and support as follows.
1) Situate the chimney in a convenient location
as near as possible to the appliance outlet.
Cut and frame a hole in the roof for the
support. The sides of this hole must be
vertical with 1 1/4" clearance.
2) Place the support in the opening. Lower it
to the correct height as determined by the
table and diagram below.
Using a level, make sure the support is
vertical. 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 sup-
port 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 re-
quired. 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. Place the
flashing under the upper shingles and on
top of the lower shingles approximately half
of the flashing should be under the shin-
gles.
4) Assemble the desired lengths of Black Pipe
and Elbows necessary to reach from the
appliance adapter up through the support
box and flashing to proper height as per Dia.
12, local codes or page 16. 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.
Slope "X"
0/12 - 2/12 4"
2/12 - 7/12 5-1/2"
7/12 - 12/12 6-3/4"
12/12 - 24/12 7-1/2"
24/12+ 12-1/2"
Offset Chart
Diagram 10
INSTALLATION
b) Any occupied areas above the first
floor, including closets and storage
spaces, through which the vertical
vent passes, must be enclosed.
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 in-
crease 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 OR
MASONRY CHIMNEY
TO A DIRECT VENT
SYSTEM
General
There are two different types of direct vent
conversion systems listed below. Follow the
appropriate directions for your installation.
A) Through an existing factory built metal
chimney going through the ceiling: A typical
conversion of this type is shown in diagram
1. The concept of direct vent conversion is
to connect an adaptor to an Underwriters
Laboratories (UL) listed 4 inch diameter
aluminum flex pipe which is then passed
down through the center of the existing
metal chimney system. Three sizes of Top
Adaptors are available from Simpson Dura-
Vent. The Retro Connector (909B) is at-
tached to the bottom of the flex pipe. The
Top Adaptor and the Retro Connector are
attached to the existing chimney with sheet
metal screws. The appliance is then con-
nected to the chimney with appropriate
black direct vent pipe and an adjustable
length section.
B) Through the wall of an existing masonry
chimney: A typical conversion of an exist-
ing masonry chimney is shown in Diagram
6. A Top Adaptor (985K) and Flashing are
used at the top of the masonry chimney.
The 4 inch aluminum liner is connected to
the adaptor and is passed down the chim-
ney and out through the masonry wall and
attached to the Retro Connector (909B).
The Retro Connector is attached to the
masonry wall and then connected to the
direct vent pipe leading to the appliance.
Prior to installation and connection of the
vent system to a factory-built or mason-
ry chimney, the chimney must be in-
spected and thoroughly cleaned by a
qualified service person, such as a cer-
tified chimney sweep or home inspec-
tion service.