Hearth and Home Technologies Montana-36 - Manual (Page 14)

14 4039-150 Rev B 01/04
MONTANA INSTALLATION INSTRUCTIONS
WARNING!
Maintain a minimum of 2” air clearance to all parts of
the chimney system at all times! Failure to maintain
this 2” air clearance will cause a structure fire.
CAUTION:
Inner flue and outer liner sections cannot be disas-
sembled once locked together. Plan ahead to ensure
the proper installation height is achieved with the se-
lected chimney components.
Figure 12 - Installing an Insulation Shield
Note: You must provide support for the pipe during con-
struction and check to be sure inadvertent loading has not
dislodged the chimney section from the fireplace or at any
chimney joint.
WARNING!
When chimney sections exceeding six feet in
length are installed between an offset and re-
turn, structural support must be provided to re-
duce off-center loading and prevent chimney
sections from separating at the chimney joints.
Figure 13 - Offset/Return with Stabilizer
7. Double-check the Chimney Assembly
Continue assembling the chimney sections up through the
firestop spacers as needed. While doing so, be aware of the
height and unsupported chimney length limitations that are
given on page 10 under “Chimney Requirements”.
Check each section by pulling up slightly from the top to ensure
proper engagement before installing the succeeding sections.
If they have been connected correctly, they will not disengage
when tested.
8. Secure the Chimney System
When offsets and returns are joined to straight pipe sections,
they must be locked into position with the screws provided
(outer only), using the predrilled holes. To prevent gravity from
pulling the chimney sections apart, the returns and the
chimney stabilizers have straps for securing these parts to
joists or rafters. See Figure 13.
6. Attic Insulation Shield
An insulation shield should be installed when there is a
possibility of insulation coming into contact with the factory
built chimney system.
a. Bend the tabs at the top of the attic insulation shield
inward. This will help keep the chimney section centered
in the shield.
b. Position the shield over the vertical chimney section
where it penetrates a firestop spacer.
c. Slide the shield down until it rests on the firestop spacer.
The firestop spacer will support the insulation shield. See
Figure 12.
WARNING! RISK OF FIRE.
Do not fill the space between the chimney sec-
tion and the insulation shield with insulation.
Ж