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Heatilator • I80 CAN-US • 4013-203 Rev F • 04/08
20
A. Chimney Requirements
Vertical distances are measured from the base of the fi re-
place as shown in Figure 5.2.
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 fi replace assembly to the point where the smoke exits
the termination cap.
• Subtract the effective height of the fi replace assembly from
the overall height of the fi replace 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 fi replace installation.
• Determine the number of ceiling fi restops, stabilizers,
roof flashing, etc. required to complete the fireplace
installation.
6 ft (1.8 m) max.
unsupported run
20 ft (6 m) max.
pipe between an
offset & return
Ceiling Firestop
35 ft (10.7 m)
max. straight
unsupported
chimney height
18.5 ft (5.6 m) min. height/single offset-return
24 ft. (7.3 m) min. height/double offset-return
90 ft (27.4 m) max. height
6 ft (1.8 m) max.
unsupported chimney
above roof
55-1/2 in.
(1410 mm)
Effective Height
(bottom of fireplace
to top of starter collar)
11-10 in./279-254mm
adaptor required in
Canada
Figure 5.2 Chimney Requirements
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.
HEIGHT OF CHIMNEY
COMPONENTS in. mm
US Canada
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
Roof Flashing
RF570 RF570 0 0
RF571 RF571 0 0
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 refl ect effective height.
ft m
• Minimum overall straight height 18 5.5
• Minimum height with offset/return 18.5 5.6
•Maximum height 90 27.4
• Maximum chimney length between an offset and
return
20 6
• Maximum distance between chimney stabilizers 35 10.7
• Double offset/return minimum height 24 7.3
• Maximum unsupported chimney length between the
offset and return
61.8
• Maximum straight unsupported chimney height
above the fi replace
35 10.7
• Maximum unsupported chimney above roof 6 1.8