Chimney And Termination Requirements; Chimney Requirements - Heatilator A36C Installation Manual

4

Chimney and Termination Requirements

A. Chimney Requirements
Vertical distances are measured from the base of the
fireplace as shown in Figure 4.1.
Table 4.1 Chimney Requirements
Minimum overall straight height
Minimum height with single offset/
return
Double offset/return minimum height
Maximum height
Maximum chimney length between an
offset and return
Maximum distance between chimney
stabilizers
Maximum unsupported chimney
length between the offset and return
Maximum unsupported chimney
height above the fireplace
Maximum unsupported chimney
above roof
NOTICE:
A maximum of two pairs of offsets and returns
may be used.
WARNING! Risk of Fire!
air space clearance to insulation and other combustible
materials around the chimney system. Failure to do so
may cause overheating and fire.
20 ft (6.10 m) max.
pipe between an
offset & return
Ceiling firestop
41-3/8 in.
(1051 mm)
Effective
Height
Figure 4.1

Chimney Requirements

Heatilator • A36/42C, A36/42CH • Installers Manual • 4017-262 • Rev D • 10/07/13
16.5 ft
16.5 ft
20 ft
90 ft
20 ft
35 ft
6 ft
35 ft
6 ft
You must maintain 2 in. (51 mm)
6 ft (1.83 m) max.
unsupported chimney
above roof
35 ft (10.7 m)
max. straight
unsupported
chimney height
16.5 ft (5.03 m) min. height/single offset-return
20 ft. (6.10 m) min. height/double offset-return
90 ft (27.4 m) max. height
NOTICE: You must provide support for the pipe during
construction and check to be sure inadvertent loading has
not dislodged the chimney section from the fireplace or at
any chimney joint.
Table 4.2 Chimney Component Dimensions
5.03 m
45.03 m
HEIGHT OF CHIMNEY COMPONENTS
Chimney Stabilizer
6.1 m
SL3
27.43 m
Offsets/Returns
6.1 m
SL315
SL330
10.67 m
Chimney Sections*
SL306
1.83 m
SL312
10.67 m
SL318
SL324
1.83 m
SL336
SL348
* Dimensions reflect effective height.
in. mm
4-3/4 121
13-3/8 340
15-1/2 394
4-3/4 121
10-3/4 273
16-3/4 425
22-3/4 578
34-3/4 883
46-3/4 1187
15