Cathedral Ceiling Support Installation - Selkirk SUPERVENT Directives D'installation Et Guide D'entretien

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27. Level the brackets and drill pilot holes in the wall using the

mounting holes in the brackets as a template. Drill 1 hole in the wall

for each bracket. Secure brackets to wall using 1/4" x 2" lag bolts

(see Figures 32 & 33). Use a level against the chimey sections at

each support stage to keep the assembly plumb.

28. Place a length of chimney within the assembly and tighten the

tabs around the chimney using the supplied 1/4" x 2" bolt to secure

the chimney length within the band (See Figure 33).

Figure 33

Wall

Section

1/4" x 2"

Lag Bolts

29. If the chimney penetrates an eave or overhang (soffit) cut an

opening with 2" clearance all around. To find the exact spot where

the chimney will pass through the eaves, drop a plumb line from the

underside of the eaves to the outer edge of the leveled chimney. Mark

5 or 6 points to give an outline of the hole. Remember that the hole

will need 2" clearance to the chimney surface. Install an Attic

Insulation Shield if space permits on the under side of the overhang.

If it is not possible, the overhang area can be enclosed and a Rafter

Radiation Shield installed at the roof level and a Finishing Plate on

the underside of the soffit. If the Attic is open to the overhang, close

off the access with suitable building materials ensuring that a 2" air

space clearance is maintained. From above, install the Roof Flashing

and Storm Collar by following the Roof Flashing section in these

instructions. If the overhang is not deep enough to allow the chimney

to be fully installed within the overhang, it will be necessary to cut

into it. Ensure that a 2"air space clearance all around the chimney

is respected. Framing and flashing the sides of the opening will be

required. Install a Wall Band at this level.

NOTE: Interior chimneys installed with a Wall Support must use

Firestop Radiation Shield (FRS) in place of Wall Bands if extending

through floor/ceiling penetrations and an Attic Insulation Shield

(AIS) when passing through an unoccupied attic space.

CATHEDRAL CEILING SUPPORT (CCS)

To complete a proper Cathedral Ceiling Support installation, the

following parts are required:

- Cathedral Ceiling Support (CCS): For sloped or angled ceiling.

- Stove Pipe Adaptor (ASE): Transition from chimney to flue pipe.

- Roof Flashing Assembly: Required when the chimney penetrates

- Suitable lengths of chimney: The chimney diameter should be sized

to suit the appliance.

- Rain Cap: Standard or Deluxe model

The SuperVent/SuperPro Cathedral Ceiling Support will support a

total of 38 feet of chimney of which 15 feet of chimney can be

suspended below the support. The Cathedral Ceiling Support is

screwed or nailed into framing installed between the roof rafters.

1. After framing in your opening to the dimensions specified in Table

1 found in the Framing Details section (measured in the horizontal

plane), slide the Cathedral Support box into the framed opening.

2. Once the box is at the desired height, ensure the box is level and

nail the box to the framing using four 2" spiral nails or #8 x1-1/2"

wood screws per side. The excess material sticking above the roof can

either be trimmed off before attaching the box to the framing or, after

it is installed the corners can be cut and the excess material folded down

onto the roof deck.

3. Install the Support Band on the chimney length at the desired posi-

tion by tightening the draw band bolt and by screwing four stainless

steel sheet metal screws through the draw band and into the outer casing.

Chimney

Pipe

can install the optional Universal Shielding Insulation (JUSI)

Tighten Bolt to

Secure Pipe

FIGURE 34

4. Lower the chimney length down through the opening in the bottom

of the support so that the Support Band makes contact with the bottom

of the Support Box. (See Figure 34).

NOTE: The male coupler of each chimney length must be up. The bottom

chimney length(s) must protrude into the living space so that proper

clearances are maintained from the stove pipe connector to the lower side

of the ceiling. Refer to Chart 3 on page 22 at the back of these instructions

for proper clearances. Do not offset the chimney below the Cathedral

Support. NOTE: A minimum of 1" of the insulated chimney length must

protrude below the Cathedral Support Box for stability.

5. Install additional chimney sections and lock together by turning

clockwise until the two sections lock together tightly. Continue in this

manner until the required height above the roof is achieved. NOTE:

Unlike normal inside installation, a cathedral installation provides only

one support point for the chimney. This limited support can allow the

chimney to sway slightly or vibrate in high winds. It is advisable to install

additional lateral support if the chimney extends more than 3 feet out of

the roof.

NOTE: To reduce cold air infiltration into the dwelling you

into the Cathedral Support. See separate installation

instructions packaged with the JUSI.

Ceiling Trim Angles

Support Box

Chimney Sections

Stove Pipe Adaptor