DuraVent DuraChimney II Manual de instruções de instalação - Página 7

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1. Clearances | Permits | Applications | Equipment | Installation Notes

Lintel hook should be mounted in a position

so as to provide a small amount of tension in

the spring attached to the chain (Fig. 3). The

tension is needed to prevent the damper plate

from rattling when closed. mount the Lintel

hook to the masonry with the screws provided.

4. Attach Chimney: Attach the first Chimney

Section onto the Anchor plate by using the

sheet metal screws provided. Always maintain

at least a 2-inch clearance to combustibles.

The 2-inch clearance is an air space; do not

fill that clearance space with any materials. If

an offset is required, refer to the elbow Offset

Installation Section below.

5. Frame Openings: From the ceiling, drop a

plumb bob to the center of the fireplace's flue

outlet and mark this center point on the ceiling.

refer to Table 1 for the framing dimensions.

mark appropriate cutting lines around the

center point. Cut a square hole in the ceiling.

Frame a level, square opening centered over

the hole that you have cut. Frame openings at

each floor level above the Fireplace (Fig. 4).

These openings are to hold the Firestop and

Attic Insulation Shield. Locate each opening by

dropping a plumb bob to the four corners of the

opening below. maintain the minimum 2-inch

clearance/air-space.

6. Cut Roof Opening: If penetrating through

the roof, determine and cut an opening in the

roof directly above the opening below. The

cut opening must be at least 4-inches larger

than the chimney's outside diameter to provide

at least a 2-inch clearance all around the

chimney. The chimney must be centered within

this opening and maintain the minimum 2-inch

clearance to combustibles.

7. Install Firestop: A Firestop is required on

each floor penetration in multistory installations.

Building Codes require a Firestop at every

floor/ceiling level, including where the chimney

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TERMINATION

CAP

STORM

COLLAR

CHIMNEY SECTION

Figure 4

Toll-Free 1-866-667-8454

CHASE TOP

FLASHING

(4) ROOF

RADIATION

SHIELDS

ATTIC INSULATION

SHIELD & COLLAR

SQUARE FRAME

FIRESTOP

CHIMNEY

SQUARE FRAME

FIRESTOP

ANCHOR PLATE

OR ANCHOR PLATE

WITH DAMPER

FIREPLACE