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CIXPRO SERIES FOR GREASE DUCT UL1978 SUBMITTAL RECORD REV: 0 AUGUST 2017
SECTION B
– GENERAL INFORMATION
PART NUMBERS
This submittal identifies major model parts by name and part
number.
Material Code Designation:
B = Type 316 Stainless Steel (SS)
C = Type 304 Stainless Steel (SS)
E = Aluminum Zinc Coating (GALVALUME)
K = Type 441 Stainless Steel (SS)
Example:
DAS1 – 36” length with inside diameter of 14” made of SS 316
inner flue and SS 304 outer casing; Code = DAS1- 14 L36 BC
DAS1 14 L36 BC
Model Dia. Part Material
DIS2 - 30° elbow with inside diameter 22” made of SS 304
inner flue and Galvalume outer casing; Code = DIS2- 22 E30
CE
DIS2 22 E30 CE
Model Dia. Part Material
DCL – wall support for 8” diameter grease duct made
of Galvalume; Code = DCL- 8 WS E
DCL 8 WS E
Model Dia. Part Material
Use only factory supplied components. Failure to
do so will void the certification and the warranty of
the chimney system.
EFFECTIVE LENGTH AND MATERIAL
THICKNESS
The effective length is the length of the part when it is
assembled.
Effective Length Thickness for 5” to 36” diameters
L36 = 36-1/8” inner wall = 0.035”
L24 = 24-1/8” outer wall = 0.024”
L18 = 17-5/8”
L12 = 11-5/8”
CLEARANCE TO COMBUSTIBLE NON -
FIRE RATED UL 1978 LISTING
APPLICATION
Model DAS1, DIS1, DIS2, DIS4 and DIS3Z can be used for
either combustible or non-combustible surroundings. When
installed in an open room where enclosure is not required, the
chimney may be located at a minimum clearance to adjacent
combustible walls in accordance with Table 1. The chimney
may be located in corners formed by two combustible
constructions (walls, floor, ceiling, supports, etc.)
NOTE: The clearance distance with the wall is the
distance between the wall and the Inner V-Band (for
Model DCL) or the Outer Band BSE (for Model
DAS1, DIS1, DIS2, DIS4 and DIS3Z). See Figure 1
for the clearance distance.
For fire resistive non-combustible enclosure construction,
maintain clearance as required for installation access for
inspection orper local code. In buildings, more than one story
in height and in one-story buildings where the roof-ceiling
assembly is required to have a
fire resistance rating, the duct must be enclosed in a
continuous enclosure from the lowest fire-rated ceiling or floor,
through any concealed spaces, to or through the roof to
maintain the integrity of the fireseparations required bythe
applicable building code provisions. If the building is less than
4 stories in height, the enclosure shall have a fire resistance
rating of not less than 1 hour. If the building is 4 stories ormore
in height, the enclosure shall have a fire resistance rating not
less than 2 hours.
DuraVent Models DCL, DAS1, DIS1, DIS2, DIS4 and DIS3Z
chimneys may penetrate a combustible floor, wall, or roof using
the appropriate parts and openings sizes.
NOTE: Model DIS3Z is equivalent to a 2-Hr fire rated
grease duct enclosure system.
NOTE: Do not completely enclose the chimney with
combustible materials.
In thecase of a firerated enclosure made of non-combustible
or limited combustible construction, the minimum clearance
for Model DCL is 6”orasrequired bylocal code.
Model DIS3Z can be used for either combustible or non-
combustible surroundings. When installed in an open room
where enclosure is not required, the duct may be located at a
minimum clearance to adjacent combustible walls
Clearance to Combustible (Unenclosed Surrounding)
(from the outer band)
Grease Duct UL1978 (500°F / 260°C)
DCL
Table 1: Clearance to Combustible
Dimensions are in inches
NOTE: Clearance to non-combustible is 0” for all models / all
diameters
