Desa C42EC2 For Round Top Termination On Roof, Penetrating The Roof, Foot Rule, Terminations

EXISTING “J” BOX

IN FIREPLACE

WIRE NUT (TYP.)

Figure 8

COVER PLATE WITH

STRAIN RELIEF

TO WALL SWITCH

10', 14 GA. W/GROUND ROMEX ADDED TO U.L. LISTED (MM11306)

FIREPLACE AT THE FACTORY

FOR ROUND TOP TERMINATION ON ROOF

STEP 1: Slide the flashing over the pipe (no firestop is needed at the roof level). Tack the flashing down at the top two corners with roofing nails. Lay roofing over the top and sides of the flashing and secure them to the roof through the flashing with roof nails. Place roofing under the lower edge and secure to the roof.

Cover all nail heads with mastic or roof cement.

STEP 2: Install the storm collar on double wall chimney, push collar down to flashing and seal (see Figure 9).

PENETRATING THE ROOF

To maintain a 2-inch clearance to the pipe on a roof with a pitch, a rectangular opening must be cut.

STEP 1: Determine the center point through which the pipe will penetrate the roof.

STEP 3: Place the CRTL-8DM on to the pipe end as illustrated and secure with the screws provided.

IMPORTANT: If an exposed portion of chimney is greater than 5 feet above the roof line, use support wires to keep chimney secure. The support wires may be attached to the outer pipe of the chimney with screws, provided the screws are no longer than 3/4".

CRTL-8DM

STEP 2: Determine the pitch of the roof. Pitch is the distance the roof drops over a given span, usually 12 inches. A 6/12 pitch means that the roof drops 6 inches for each 12 inches measured horizontally.

STEP 3: From the center point determined in STEP 1, measure an opening 17 1/4 inches wide (8 5/8 inches to each side of the center point). For a roof pitch between 0/12 (flat) and 6/12, measure an opening 21 inches long (10 1/2 inches above and below the center point).

6/12 to 12/12 pitches: Measure 26 inches (13 above and below).

12/12 to 18/12 pitches: Measure 32 1/2 inches (16 1/4 above and below).

18/12 to 24/12 pitches: Measure 40 inches (20 above and below).

STEP 4: Remove the roofing around the opening measured and cut out this section.

ATTACH BRACKET TABS TO OUTER PIPE (3 PLACES) SECURE WITH SCREWS

OVERLAP

SHINGLES TOP AND SIDES

FLUE PIPE OF CRTL-8DM INSIDE INNER PIPE OF CHIMNEY

CAULK

COLLAR

FLASHING

UNDERLAP SHINGLES

BOTTOM ONLY

STEP 5: Add the next sections of pipe until the end penetrates the roof line. Check to see that proper clearances are maintained. Extend chimney by adding sections of double wall pipe until pipe is a minimum of 30 inches above highest point of roof cutout. Termina- tion and chimney must extend a minimum of 36 inches above highest point where it passes through roof.

10 FOOT RULE

All chimney terminations must extend a minimum of 3 feet in height above the highest point where it passes through the roof and must be at least 2 feet above the peak of the roof if within a horizontal distance of 10 feet from the peak (see Figure 8).

10'	LEVEL OF FLUE
OR LESS	GAS OUTLET
	10'
2' MIN.
	3' MIN.
	2' MIN.
	3' MIN.

Figure 9

FIREPLACE ENCLOSURE: COLD CLIMATE INSTALLATIONS

Before finishing the enclosure around the fireplace, inspect all joints around the fireplace. Any gaps between the nailing flanges and the framing should be sealed with noncombustible insulation or caulking (see Figure 10). Inspect the fireplace joints for possible gaps caused by shipping or mishandling during installation. These should be sealed with noncombustible materials. If the fireplace is mounted on a raised platform insulate below the platform to prevent the entry of cold air through the fireplace bottom by means of conduction. The above steps are import especially if the fireplace is installed in cold weather climate. The opening around the base of the chimney must remain open and free to circulate outside air for keeping the chimney cool as designed (see Figure 3B, page 3). The fireplace must be set on a continuous platform to prevent cold air from conducting through the metal bottom. The platform bottom may be constructed of any wood product or other materials such as cement.

10 FOOT RULE

Figure 8

TERMINATIONS

The fireplace and chimney system must be vented to the out-of-doors and must be terminated with the listed round top or chase termina-

FIREPLACE

SIDE FRAME

NORMAL FRAMING

PACK INSULATION HERE

SIDE

FRAMING

3/4 CLEARANCE NOT REQUIRED AT THE FRAMING

CAULK HERE

tions. If a chase termination is desired, refer to the instructions supplied with the termination.

WARNING: Do not seal ventilation openings on the rooftop flashing. Follow the installation instructions provided with the termination being used.

SIDE

FRAMING

WIDE FRAMING	FIREPLACE
	SIDE FRAME

Figure 10

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