A. Chimney Requirements

Measure vertical distances from the base of the fireplace as shown in Figure 8.2.

 

 

ft

meters

a.

Minimum overall straight height

14.0

4.27

b.

Minimum height with offset/return

16.5

5.03

c.

Maximum height

90.0

27.43

d.

Maximum chimney length between an offset and

20.0

6.1

 

return

 

 

e.

Maximum distance between chimney stabilizers

35.0

10.67

f.

Double offset/return minimum height

22.0

6.71

g.

Maximum unsupported chimney length between the

6.0

1.83

 

offset and return

 

 

h.

Maximum unsupported chimney height above the

35.0

10.67

 

fireplace

 

 

i.

Maximum unsupported chimney above roof

6.0

1.83

WARNING! Risk of Fire! You must maintain 2 in. (51

mm)air space clearance to insulation and other combus- tible materials around the chimney system. Failure to do so may cause overheating and fire.

Table 8.1

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

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 reflect effective height.

Determine the chimney components needed to complete your particular installation:

Measure the total vertical height of the fireplace installation from the base of the fireplace assembly to the approximate location of the bottom of the termination cap.

Subtract the effective height of the fireplace assembly (see Figure 8.2) from the total vertical height to determine the overall height of the chimney installation.

Create a schematic for your application similar to Figure 8.2 showing components required (referring to Table 8.1). Figure 8.1 identifies those components and where used.

Install a ceiling firestop whenever the chimney penetrates a floor/ceiling.

NOTICE: A maximum of two pairs of offsets and returns may be used.

CAUTION! Risk of Fire and/or Asphyxiation! DO NOT connect this fireplace to a chimney flue servicing another appliance. DO NOT connect to any air distribu- tion duct or system. These actions could cause over- heating/fire in the chimney flue, or release of exhaust fumes into the living areas.

i

d & g

 

 

 

 

 

 

 

 

 

Ceiling Firestop

h

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

11-10 in. (279-254 mm)

 

 

 

 

 

adapter required in

58-7/8 in.

Canada.

(1495 mm)

 

 

a,b,c,f

Effective

 

 

 

 

 

Height

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 8.2 Chimney Requirements (refer to list in Sect. 5.A.)

Heat & Glo • HST-48D US-CAN4012-040 • Rev F • 11/08

25

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Hearth and Home Technologies HST-48D owner manual Chimney Requirements, C,f

HST-48D specifications

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