Hearth & Home Technologies 21M-ACC User Manual

September 1, 2008

7039-131F

Page  29

R

Replace the firebrick if they become crumbly and/or if 

there is a 1/4 inch (6.5mm) gap between the bricks. 
Inspect the firebrick after each ash removal. 
The firebox is lined with high quality firebrick, which has 

exceptional insulating properties.  There is no need to 

use a grate; simply build a fire on the firebox floor.  Do 

not operate appliance without firebrick.
1.  After the coals have completely cooled, remove all 

old brick and ash from unit and vacuum firebox.

2.  Remove  new  brick  set  from  box  and  lay  out  to 

diagram shown.

.  Lay bottom bricks in unit.
4.  Install rear bricks on the top of the bottom bricks.  

Slide top of bricks under clip on back of firebox wall 

and push bottom of brick back.

5.  Install side bricks.  Slide top of brick under clips 

on side of firebox and push the bottom of the brick 

until it is flush with the side of the unit.

Use Part 82-0550 when ordering individual brick.  Provide brick 

dimension or copy this page, mark the desired brick and take it 

to your authorized dealer.  

4

1-3/8 in.  

(35mm)

1-3/4 in.  

(44mm)

6-1/4 inches 

(159mm)

8-1/2 inches (216mm)

1

1

1

1

1

1

1

1

1

2

2

2

4

3

3

5

8-1/2 inches (216mm)

3 inches 

(76mm)

7 inches (178mm)

5

1

9 x 4-1/2  x 1-1/4

9

2

6 x 4-1/2

3

3

8 x 4-1/2 x 1-1/4

2

4

Brick with angle (see drawing)

1

5

Brick with angle (see drawing)

1