G. install attic insulation shield, H. secure the chimney – Heatiator C40 User Manual

Page 47

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4/20/11

Heatilator • Constitution EPA Fireplace • 480-1091D

Page 47

Installation of a ceiling firestop is required
• Refer to Figures 8.8 - 8.10.
• Roll the shield (around the chimney if already installed)

until you have a 3 in. (76 mm) overlap and the three

holes on each side match up (large holes on top).

• Insert three screws into the matching holes to form a

tube.

• Bend three tabs on the bottom of the tube inward to 90°

to maintain chimney air space (refer to Figure 8.8).

• Rest the insulation shield on the ceiling firestop below.

• Bend the three short tabs at the top of the shield inward

to 90° to maintain the 2 in. (51 mm) air space from the

chimney.

• Bend the remaining top tabs to just meet the pipe.

If you wish to make a custom shield or barrier, follow

these guidelines:
• Metal is preferred, although any material stiff enough to

hold back the insulation can be used.

WARNING! Risk of Fire! Use of cardboard or other

materials that can deflect under humidity or other envi-

ronmental conditions is not recommended.

• The shield or barrier must be tall enough to extend

above the insulation and prevent blown-in insulation

from spilling into the cavity.

• Maintain specified air spaces around chimney.

• Check instructions and local codes for further details.

3 in. (76 mm)

overlap

Insert three

screws

Bend inward

90°

Bend remaining tabs
to rest against pipe to
prevent insulation
from falling in.

Figure 8.8 Prepare Attic Insulation Shield

6 Tabs bent

in 90°

Tabs bent in to

rest against pipe

Attic Insulation Shield

Ceiling Firestop

10-1/2 in.

(267 mm)

14-1/2 in. (368 mm)

diameter

Insulation

Insulation

Pipe

Pipe

6 Tabs bent

in 90°

Tabs bent in to

rest against pipe

Attic Insulation Shield

Ceiling Firestop

10-1/2 in.

(267 mm)

14-1/2 in. (368 mm)

diameter

Insulation

Insulation

Pipe

Pipe

Figure 8.9 Install Attic Insulation Shield (firestop above ceiling)

Figure 8.10 Install Attic Insulation Shield (firestop below ceiling)

WARNING! Risk of Fire! You MUST install an attic insu-

lation shield when there is any possibility of insulation or

other combustible material coming into contact with the

chimney.

DO NOT pack insulation between the chimney and the

attic insulation shield.

• Failure to keep insulation and other materials away from

chimney pipe could cause fire.

DO NOT offset chimney inside insulation shield.

G. Install Attic Insulation Shield

When offsets and returns are joined to straight pipe sec-

tions, they must be locked into position with the screws pro-

vided* (outer only), using the predrilled holes. To prevent

gravity from pulling the chimney sections apart, the returns

and the chimney stabilizers have hanger straps for secur-

ing these parts to joists or rafters. See Figure 8.11 on page

48.
* Use #6 or #8 sheet metal screw, or larger, no longer than

1/2 in. (13mm).

H. Secure the Chimney

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