27
Heat & Glo • REVO-V12, REVO-S21, REVO-H31 Installation Manual • 2273-980 Rev. J • 5/15
A. Pipe Clearances to Combustibles
WARNING! Risk of Fire!
Maintain air space clearance to
vent.
DO NOT
pack insulation or other combustibles:
• Between ceiling firestops
• Between wall shield firestops
• Around vent system
Failure to keep insulation or other material away from
vent pipe may cause overheating and fire.
5
Vent Clearances and Framing
Figure 5.2 Wall Penetration
Figure 5.1 Horizontal Venting Clearances To Combustible
Materials
B. Wall Penetration Framing/Firestops
Combustible wall Penetration
Whenever a combustible wall is penetrated, you must
frame a hole for the wall shield firestop(s). The wall shield
firestop maintains minimum clearances and prevents cold
air infiltration.
• The opening must be framed on all four sides using the
same size framing materials as those used in the wall
construction.
* When using SLP pipe, minimum clearances from the vent pipe to combustible
materials at inside wall firestops are:
Top: 2-1/2 in. (64 mm)
Bottom: 1/2 in. (13 mm)
Sides: 1 in. (25 mm)
Note: Heat shields MUST overlap by a minimum of 1-1/2 in. (38 mm).
•
SLP heat shield
- designed to be used on a wall 4-3/8 in. to 7-5/8 in. (111 mm to
194 mm thick).
• If wall thickness is less than 4-3/8 the existing heat shields must be field trimmed.
If wall thickness is greater than 7-5/8 in. a DVP-HSM-B will be required.
(SLP Pipe Shown)
3 in. (76 mm)
top clearance *
1 in. (25 mm)
clearance
bottom & sides
Heat
Shield
Wall
Shield
Firestop
Heat
Shield
WALL
10-3/16 iN.
12 IN.
C
B
DO NOT PACK WITH
INSULATION OR
OTHER MATERIAL
A
FINISHED
FLOOR
A
B
C*
Revo-V12
in.
= 4 in.min.
(102 mm)
28-1/2
C=(A + B) +1 in.
(1 in. =25 mm)
mm
724
Revo-S21
in.
26
mm
660
Revo-H31
in.
21-1/2
mm
546
WARNING! Risk of overheating!
Install appliance a
minimum of 4 inches off of finished floor.
• Convection air flow could be compromised and
cause overheating.
• Decorative fronts will not fit properly.
* Shows center of vent framing hole for venting. The center
of the hole is one (1) inch (25.4 mm) above the center of
the horizontal vent pipe.
• SLP pipe - A wall shield firestop 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 maintained.
• See Section 7.F. for information for regarding the instal
-
lation of a horizontal termination cap.
Non-Combustible Wall Penetration
If the hole being penetrated is surrounded by non-com-
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 firestop is only required on one side and no heat
shield is necessary.
Note:
Vertical venting requires 1 inch clearance on all
sides of the pipe.