Hearth and Home Technologies MONTANA 42 EN - Manual (Page 14)

Outdoor Lifestyles by Hearth & Home Technologies Inc. • Montana US-CAN • 4039-156 Rev P • 10/12 14
A. Chimney Requirements
Vertical distances are measured from the base of the fire-
place.
• 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.
To determine the chimney components needed to complete
your particular installation, follow the steps below:
• Determine the total vertical height of the fireplace
installation. This dimension is measured from the base of
the fireplace assembly to the point where the smoke exits
the termination cap.
• Subtract the effective height of the fireplace assembly from
the overall height of the fireplace installation (measured
from the base of the fireplace to the bottom of the
termination cap).
• Refer to Table 5.1 to determine what components must
be selected to complete the fireplace installation.
• Determine the number of ceiling firestops, stabilizers,
roof flashing, etc. required to complete the fireplace
installation.
Table 5.1
• Do NOT connect this fireplace to a chimney flue
servicing another appliance.
• Do NOT connect to any air distribution duct or
system.
CAUTION
Fire Risk
• Must maintain 2 in. (51 mm) air clearance
to insulation and other combustible
materials.
WARNING
Note: A maximum of two pairs of offsets and returns may
be used.
5
Chimney Assembly
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
HEIGHT OF CHIMNEY COMPONENTS in. mm
US Canada ONLY
Chimney Stabilizer
SL11 SL4 4-3/4 121
Ceiling Firestops
FS538 FS538 0 0
FS540 FS540 0 0
Offsets/Returns
SL1130 SL430 14-1/2 368
Chimney Sections*
SL1106 SL406 4-3/4 121
SL1112 SL412 10-3/4 273
SL1118 SL418 16-3/4 425
SL1136 SL436 34-3/4 883
SL1148 SL448 46-3/4 1187
n/a SLA10 16-3/4 425
* Dimensions reflect effective height.