Superior BC36MH, BCD36MH installation instructions Installing the Chimney System, Room Above

8

Step 4. Fireplace should be secured to side framing members using the full length nailing tabs at the top and bottom of the fireplace front face. Use screws, 8d nails or equivalent fasteners (Figure 13). This manufactured home model is also provided with floor brackets used to secure the fireplace to the floor to prevent shifting in transit.

Note: The use of floor brackets are optional. They are included (unbent) inside the Com- bustion Air Kit package, located inside the firebox. Refer to Figure 8 for suggested bracket placement.

Screw, 8d

Nail Or

Equivalent

Fastener

Figure 13

Note: The nailing tabs and the area directly behind the nailing tabs are exempt from the clearances described on Page 5. Maintain at least 1/2" clearance from the firebox wrapper to the framing at the closest point of contact, directly adjacent to the flange.

INSTALLING THE CHIMNEY SYSTEM

Step 1. Before continuing, check the operation of the damper, as described on Page 4, (refer to Figure 2).

Step 2. Using standard construction fram- ing techniques, construct opening for chimney route up through the ceiling(s) and roof or through an outside chase.

Framing must maintain adequate minimum air space clearance at all times.

CAUTION

Allow minimum 1" chimney air space to framing members throughout chimney installation. A minimum 1" air space must be maintained from all insulation and building materials extend- ing for any continuous length surrounding the chimney.

Reference Figures 10 and 11 and their charts for framing dimensions at Ceilings and Roofs.

In new construction, to determine chimney center line, use plumb line from roof or ceiling above fireplace to center of flue collar on fireplace.

For remodeling, plumb to center of flue collar from ceiling above, drive nail through ceiling from below to mark position, then mark and cut to passage from above ceiling (around nail) (Figure 14). Then plumb from ceiling or roof level directly above hole which has just been completed.

Figure 14

Step 3. Position appropriate thimble/firestop spacer combination at ceiling and nail temporarily with two (2) 8d nails or equivalent fasteners (see Figures 16, 17 and 18). Use one fastener on opposite sides to hold thimble/firestop spacer combination in position. Nail permanently, using at least two (2) more fasteners, after chimney sections have been assembled through the thimble/firestop spacer combination and after any necessary adjustments have been made. Firestop spacer must be secured by at least four (4) fasteners when completely installed.

Note: If there is a room above ceiling level, firestop spacer must be installed on the bottom side of the ceiling. If an attic is above ceiling level, firestop thimble must be installed on the bottom side of ceiling joist (Figure 15).

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Room Above

Firestop Spacer

Figure 15

Attic Above

1”

Clearance

Minimum

Firestop Thimble

Figure 16

Ensure the thimble penetrates the roof opening. The thimble must extend completely through the ceiling or roof cavity to the outermost plane of the roof. Note: Thimble extensions (F8-TE26) are available from your dealer for constructions in which the distance between the outside of the roof and the inside of the ceiling exceeds 13". The thimbles and their extensions provide for zero clearances to combustibles and must be used at the ceiling/roof in manufactured homes (Figures 17 and 18).

	Outer Pipe Of
	Chimney
14" Min.
	Thimble
	FM8-AT1
	Pitched Roof
		Outer Pipe Of
Note: Trim Thimble/		Chimney
Extension To Desired Length
And Pitch At The Rood Line
Thimble	14" Min.
Extension
F8-TE26
		13"
	Thimble
	FM8-AT1
	Pitched Roof
14" Min.	Outer Pipe Of
	Chimney
	Thimble
	FM8-AT1
	Bow Roof	Figure 17