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Vent clearances and framing – Heat & Glo Fireplace RED40ST User Manual

Page 30

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Heat & Glo • RED40, RED40ST • 2155-900 Rev. P • 10/12

30

A. Pipe Clearances to Combustibles

WARNING! Risk of Fire! Maintain air space clearance to
vent. DO NOT pack insulation or other combustibles:

• Between ceiling fi restops
• Between wall shield fi restops
• Around vent system

Failure to keep insulation or other material away from
vent pipe may cause over heating and fi re.

8

8

Vent Clearances and Framing

Figure 8.2 Wall Penetration

* Shows center of vent framing hole for top venting. The

center of the hole is one (1) in. (25.4 mm) above the
center of the horizontal vent pipe.

A*

B

59-3/4 in.

58-3/4 in.

1.52 m

1.49 m

A

10 in.

12 in.

B

DO NOT PACK WITH
INSULATION OR
OTHER MATERIAL

B. Wall Penetration Framing

Combustible Wall Penetration

Whenever a combustible wall is penetrated, you must
frame a hole for the wall shield fi restop(s). The wall shield
fi restop maintains minimum clearances and prevents cold
air infi ltration.

• The opening must be framed on all four sides using the

same size framing materials as those used in the wall
construction.

• DVP pipe - A wall shield fi restop must be placed on

each side of an interior wall. A minimum 1-1/2 in. (38
mm) overlap of attached heat shields must be main-
tained.

• See Section 10.K. for information for regarding the in-

stallation of a horizontal termination cap.

Non-Combustible Wall Penetration

If the hole being penetrated is surrounded by noncom-
bustible materials such as concrete, a hole with diameter
one inch greater than the pipe is acceptable.

Whenever a non-combustible wall is penetrated, the wall
shield fi restop is only required on one side and no heat
shield is necessary.

Figure 8.1 Horizontal Venting Clearances To Combustible
Materials

Note: Heat shields MUST overlap by a minimum of 1-1/2 in. (38 mm).
‡ DVP heat shield - designed to be used on a wall 4 in. to 7-1/4 in.

(102 mm to 184 mm) thick.

‡ ,f wall thickness is less than 4 in. the e[isting heat shields must be

field trimmed. ,f wall thickness is greater than 7-1/4 in. a '93-
HSM-B will be required.

(DVP Pipe Shown)

3 in. (76 mm)
top clearance *

1 in. (25 mm)
clearance
bottom & sides

Heat
Shield

Wall

Shield

Firestop

Heat
Shield

WALL

3 in. (76 mm)

top clearance

1 in. (25 mm)
clearance around
vertical sections

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