Hearth and Home Technologies MONTANA 42 EN - Manual (Page 11)

Outdoor Lifestyles by Hearth & Home Technologies Inc. • Montana US-CAN • 4039-156 Rev P• 10/12 11
E. Chimney Requirements
When planning your fireplace location, the chimney construc-
tion and necessary clearances must be considered. The fire-
place system and chimney components have been tested to
provide flexibility in construction. The following figures are
the minimum distances from the base of the fireplace.
• Minimum overall straight height is 6 ft 4 in. if the fireplace
is freestanding and a minimum of 10 ft from a combustible
structure. See Figure 3.2.
• Chimney must extend 2 ft (.6 m) above any portion
of the roof within 10 ft (3 m) of the chimney. Refer to
Figure 6.1.
Note: A maximum of two pairs of offsets and returns may
be used.
ft m
• Minimum height width offset/return 16 4.88
• Maximum height 90 27.43
• Maximum chimney length between an offset
and return
20 6.1
• Maximum distance between chimney
stabilizers
35 10.67
• Double offset/return minimum height 24 7.32
• Maximum unsupported chimney length
between the offset and return
6 1.83
• Maximum unsupported chimney height above
the fireplace
35 10.67
• Minimum overall straight height if fireplace is
freestanding
6.4 3.048