Справочник Пользователя для Empire Comfort Systems DVX42DP91(N,P)-1

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Termination clearance for buildings with combustible and noncombustible exteriors.

Important! Minimum clearance between vent pipes and combustible materials is three (3") (76 mm) on top, and (1") (25 mm) on bottom 

and sides.
Important! When vent termination exits through foundation less than 20" below siding outcrop, the vent pipe must extend outward so 

that the horizontal vent terminal 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.
The maximum horizontal vent run is 20 feet (457 cm) when the vertical vent rise is 8 feet (244 cm). See Figure 17. 
Venting terminals shall not be recessed into wall or siding. 

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)