34829-1-0115
Page 20
Termination clearance for buildings with combustible and noncombustible exteriors.
Figure 33
RECESSED LOCATION
OUTSIDE CORNER
INSIDE CORNER
A = COMBUSTIBLE 9” (229mm)
= NONCOMBUSTIBLE 2” (51mm)
F= COMBUSTIBLE 6” (152mm)
= NONCOMBUSTIBLE 6” (152mm)
BALCONY
WITH PERPENDICULAR SIDE WALL
BALCONY
WITH NO SIDE WALL
C = CLEARANCE FROM CORNER
IN RECESSED LOCATION
COMBUSTIBLE 9” (229mm)
NONCOMBUSTIBLE 2” (51mm)
D = MINIMUM WIDTH FOR BACK WALL
OF A RECESSED LOCATION
COMBUSTIBLE 38” (965mm)
NONCOMBUSTIBLE 24” (610mm)
E = MAXIMUM DEPTH OF 48” (1219mm)
FOR RECESSED LOCATION
G = COMBUSTIBLE 9” (229mm)
= NONCOMBUSTIBLE 2” (51mm)
H = COMBUSTIBLE 18” (457mm)
= NONCOMBUSTIBLE 12” (305mm)
I = COMBUSTIBLE 18” (457mm)
= NONCOMBUSTIBLE 12” (305mm)
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TERMINATION CLEARANCES
Vertical Sidewall Installations
Important!
Minimum clearance between vent pipes and combustible
materials is 3 inch (76 mm) on top, and 1 inch(25 mm) on bottom
and sides.
Important!
When vent termination exits through foundation less
than 20 inch (508 mm) below siding outcrop, the vent pipe must
extend outward so that the horizontal vent termination is located
flush to, or beyond the outcrop siding.
Information on Various Venting Routes and Components
Important:
It is always best to locate the fireplace in such a way
that minimizes the number of offsets and horizontal vent length.
Since it is very important that the venting system maintain its balance
between the combustion air intake and the flue gas exhaust, certain
limitations as to vent configurations apply and must be strictly
adhered to.
The graph showing the relationship between vertical and horizontal
side wall venting will help to determine the various vent lengths
allowable.
The horizontal vent run refers to the total length of vent pipe from
the flue collar of the fireplace to the face of the outer wall.
Venting termination shall not be recessed into wall or siding.
ATTENTION: Vinyl Soffit, Vinyl Ceiling, Vinyl Overhang
Disclaimer
Clearances are to heat resistant material (i.e. wood, metal). This
does not include vinyl. Empire Comfort Systems Inc. will not be held
responsible for heat damage caused from terminating under vinyl
overhangs, vinyl ceilings or vinyl ventilated/unventilated soffits.