Majestic Appliances ODSHR42 Installing the Chimney System, Proper Firestop Spacer Installation

5. Installing the Chimney System

Start by attaching the first chimney section to the collar on top of the fireplace.

Install the pipe as pictured in Figure 14. When you get a good lock, you will hear the pipe clearly snap to- gether. Once sections are snap-locked in place, it is extremely difficult to get them apart. Make sure the pipe is firmly snapped and locked together as each pipe section is mounted.

When installing elbows, only outer pipe will snap- lock. Middle pipes simply slide into position. Be sure to always attach straps on upper elbow to a structural framing member. (Fig. 15)

Continue installing the pipe as required until pipe is installed up through the ceiling. At this point, you must install a firestop spacer.

Installing the Firestop Spacer

in the Ceiling Hole

A firestop spacer is used to keep pipe spaced properly and required for safety.

Nail the firestop spacer (at each corner) to the framing members of the ceiling hole. Note: A firestop spacer is not required at the roof.

Hole sizes listed in Figure 10 for angled firestop spac- ers provide minimum required air space to chimney pipe for ceiling thickness up to eight (8) inches. When combined thickness of ceiling material, ceiling joists and flooring material exceeds eight (8) inches, adjust- ments must be made in framing to assure that minimum air spaces to chimney are maintained.

Proper Firestop Spacer Installation

Figure 16 shows different installation procedures for both an area that is an attic and an area that is not an attic.

ODSHR Series

Pipe Section

Pipe

Rim

Hem

Lance

Pipe

Rim

FP558SHR

Fig. 14 Install pipe, listening for the snap-lock to fasten.

Support Structure

Elbow Strap (must be tight)

Ceiling

Elbow StrapHole

Framing

Angle Firestop

Chimney Support

Angled StrapStrap

(must be tight)

FP270/271

Fig. 15 Attach straps to a structural framing member.

If the area above the ceiling is not an attic, position the firestop spacer with the flange on the ceiling side and the angled portion extending up into the hole.

If the area above the ceiling is an attic, position the firestop spacer with the flange on the top of the framed hole and the angled portion extending down into the hole.

20002264

	Attic Installation	Ceiling Installation
	Nails (4)
	Firestop Spacer	Joist
	Joist	Firestop
		Spacer
	Flange Down Into Hole	Nails (4)
		Flange Up Into Hole	FP285
Fig. 16	Installing firestop spacer.
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