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IntroDuCtIon
DuraVent Model DuraStack DIS or DAS
Chimney are cylindrical, prefabricated,
modular venting systems incorporating a
unique extended inner flange designed for
both quick assembly and pressure sealing
capability. Model DIS incorporates a 2” of
mineral fiber insulation while DAS is air
insulated. The circular cross section and high
quality stainless steel inner flue construction
provide for a system with high strength-to-
weight ratio and low friction losses.
tEStIng / LIStIng InFormatIon
DuraVent model DIS and DAS venting
systems are listed with Intertek Testing
Services (ETL) to UL/ULC standards:
U.S.A.
• UL-103
- 60 in. Positive Pressure Chimney
- Building Heating Appliance Chimney
- 1400°F Chimney
• UL-1978 Grease Duct (DIS only)
CANADA
• ULC/ORD C959
- 540°C (1000°F)
- 760°C (1400°F)
• ULC S604
Models DuraStack DIS and DAS are code
compliant when installed as per the
Installation Instructions with : NFPA211;
NFPA31; NFPA37; NFPA96 and CSA-B149
When installed in accordance with it’s
installation, Models DuraStack DIS and DAS
comply with the following codes:
- NFPA (National Fire Protection Association)
- SBCCI (Southern Building Code
Congress International)
- ICBO (International Conference of
Building Officials)
- BOCA (Building Officials and Code Administrators)
- ICC (International Code Congress)
SECtIon a - gEnEraL InFormatIon
These instructions comprise both general
guidelines and special requirements for all
parts in the product line. Before specifying a
design or beginning an installation please
carefully review these instructions.
Important
Chimney Cleaning: This applies to cleaning
other than standard natural gas chimney
applications where minimal maintenance is
necessary. Keep your chimney clean. Access
should be provided for the inspection and
cleaning of all sections of the chimney. Have
your chimney cleaned by qualified chimney
sweep. It is recommended to use a nylon
chimney brush of the correct size. Do not
use a brush that will scratch the stainless
steel interior of the chimney.
FEaturES
Models DIS and DAS are prefabricated
modular venting systems design for industrial
and commercial applications. It has a
unique extended inner flange for both quick
assembly and pressure sealing capability. It
is a double wall construction with 2” of
mineral fiber insulation for DIS and 2” air
space for model DAS. The inner flue is made
of high quality stainless steel plasma welded.
appLICatIon
uL 103 Building Heating appliance
Chimney Listing:
Under this category, models DIS and DAS
have been determined suitable for venting
flue gases at temperatures not exceeding
538°C (1000°F) under continuous operating
conditions from gas, liquid, oil or solid fuel
fired appliances. Also complies with
operation (less than one hour) at
temperatures not exceeding 740°C (1400°F)
and brief operation (maximum 10 minutes) at
temperatures not exceeding 906°C (1700°F).
