Superior MHW36CB Additional Instructions

P/N 900284-00 Rev. NC 10/2014
P900284-00
INSTALLING THE CHIMNEY SYSTEM
Step 1. Before continuing, check the operation
of the damper, as described on Page 4, (refer
to Figure 2) of the Installation Instruction and
Care and Operations (IICO) manual.
Step 2. Using standard construction framing
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 in the IICO 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 1). Then plumb from ceiling or
roof level directly above hole which has just
been completed.
Step 3. Position appropriate thimble/firestop
spacer combination at ceiling and nail temporar-
ily with two (2) 8d nails or equivalent fasteners
(see Figures 3, 4 and 5). Use one fastener on
opposite sides to hold thimble/firestop spacer
combination in position.
Addendum to Installation Instructions
Additional Instructions for Alternative Chimney
Installation for Superior™ Round Back Fireplaces with
Bi-Fold Doors and Combustion Air Kit
For use with Models
MHW36R
MHW36CB
Figure 1
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 adjust-
ments 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 2).
Room Above
Figure 2
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Figure 3
14" Min.
Note: Trim Thimble/
Extension To Desired Length
And Pitch At The Rood Line
14" Min.
Firestop Spacer
F8FS-2
Attic Above
1"
Clearance
Minimum
Firestop Thimble
Outer Pipe Of
Chimney
Thimble
FM8-AT1
Pitched Roof
Outer Pipe Of
Chimney
14" Min.
Thimble
Extension
F8-TE26
Thimble
FM8-AT1
Pitched Roof
Outer Pipe Of
Chimney
Thimble
FM8-AT1
Bow Roof
Figure 4
13"
1