DuraVent DuraConnect - Manual (Page 8)

8
and an Appliance Connector for
DuraConnect. Secure with sheet metal
screws.
TECHNICAL REPORT
UL listing:
DuraConnect is the first and only
single wall vent connector for gas
appliances that has been tested and
listed by Underwriters Laboratories.
The DuraConnect & DuraConnect II
flexible connector pipe and fittings are
tested and listed under the UL category
of "Chimney and Vent Connectors and
Accessories." (UL File # MH14089). UL
mechanical test requirements include:
1. Torsional load testing.
2. Ceiling support and wall support load
test.
3. Load testing of fitting attachment of
flexible connectors.
4. Load testing of aluminum flexible
connectors.
5. Flexibility and cross-sectional area
tests on flexible connectors.
6. Puncture tests.
UL temperature test requirements
include:
1. Test Procedure: The flue gas
generator shall be fired per UL test
procedure #441 (470 degrees F).
The tests are to be continued until
equilibrium temperatures are reached
on nearby combustible materials. (four
hours).
2. Test Configurations: The vent
connector system is tested in both
a horizontal configuration (one inch
clearance to walls and ceiling), and a
vertical configuration (corner test at one
inch clearance to both walls). To simulate
a close clearance condition, the vent
connector was positioned at several
locations 1/4 inch from combustible
walls and ceilings for the duration of the
tests.
3. Test Requirements: Temperature
rise on combustible materials may not
exceed UL specified limits.
NATIONAL CODES
DuraConnect meets all requirements
for single wall pipe connectors of the
National Fuel Gas Code, ANSI Z223.1,
and as specified under NFPA 54, section
7.7, "Single Wall Metal Pipe", and is
in compliance with minimum wall
thickness requirements for single wall
aluminum vent connectors, section
7.10.2b. DuraConnect & DuraConnect II
meet the requirements of NFPA 211 as
specified under Chapter 5 "Chimney and
Vent Connectors", Section 5-2.1.
DuraConnect also meets the
requirements for single wall vent
connectors, of the Uniform Mechanical
Code. UL test procedures verify that
DuraConnect & DuraConnect II materials,
(which are identical to the liner thickness
of Type B Gas Vent) are "capable of
withstanding the flue gas temperatures
produced by the appliance." (Section C.)
DuraConnect & DuraConnect II are UL
listed at 1 inch clearance to combustible
materials and are in compliance with the
intent of the Uniform Mechanical Code
to limit the temperature rise in nearby
combustibles as per UL Standard #441.
DuraConnect & DuraConnect II meet the
requirements and intent of the National,
Standard, and Uniform Mechanical
Codes. The DuraConnect flexible
connector system has been approved by
SBCCI, BOCA and ICBO.