Installation

TABLE OF CONTENTS
Introduction ............................................................................ page 2
Testing / listing information .................................................... page 2
Section A - General information ................................ page 2
Features ............................................................................. page 2
Application ......................................................................... page 3
Surrounding / enclosure .................................................... page 3
Boiler and engine exhaust .......................................... page 3
Grease duct ................................................................ page 3
System sizing .................................................................... page 3
Part numbers ..................................................................... page 4
Effective length .................................................................. page 4
Clearances ......................................................................... page 4
Opening through combustible construction ....................... page 4
Chimney and fitting joint assembly .................................... page 5
Support methods and height limits .................................... page 6
Thermal expansion ............................................................ page 6
Chimney weight ................................................................. page 7
Chimney guying and spacing ............................................. page 7
Termination height ............................................................. page 8
Multi-engine exhausts not recommended .......................... page 8
Section B - Tees, elbows, increasers .......................... page 9
Tees ................................................................................... page 9
Increaser, step or tapered .................................................. page 10
Elbows ............................................................................... page 10
Offsets ............................................................................... page 11
Section C - Structural support and guiding .................... page 12
Anchor plate ..................................................................... page 12
Length Anchor Plate .......................................................... page 12
Anchor plate ventilated ...................................................... page 12
Wall support ..................................................................... page 14
Wall guide ......................................................................... page 14
Floor guide ........................................................................ page 15
Suspension band ............................................................... page 15
Roof brace ......................................................................... page 16
Guy wire ........................................................................... page 16
Section D - Roof and wall penetrations ........................ page 17
Roof / floor penetration .................................................... page 17
Wall penetration ................................................................. page 17
Section E - Terminations, starting adaptors, drain length
and relief valve ............................................ page 18
Single wall adaptor ............................................................ page 18
ANSI flange adaptor ........................................................... page 18
Flanged adaptor ................................................................. page 18
DIS/DAS to DCT and DCT to DIS/DAS adaptor .................. page 18
Rain cap ............................................................................. page 19
Finishing cone ................................................................... page 19
Flip top ............................................................................... page 19
Miter cut ............................................................................ page 19
Drain length ....................................................................... page 20
Relief valve ........................................................................ page 20
Section F - Thermal expansion ................................... page 21
Thermal expansion ............................................................ page 21
Expansion joints installation .............................................. page 21
Bellows expansion joint ..................................................... page 21
Adjustable length ............................................................... page 23
Variable length ................................................................... page 24
Section G - Grease duct application ................................page 26
Access ...............................................................page 26
Use and installation of individual parts ........................page 26
Horizontal drain length ...........................................page 26
Nozzle section ......................................................page 26
Square to round adaptor .........................................page 26
Grease tee 90° .....................................................page 27
Grease tee Y ........................................................page 27
No tool access door ...............................................page 28
Fan adaptor plate ..................................................page 29
Maintenance ........................................................page 29
Section H - Markings ..................................................page 30
Product reference information ......................................page 32
INTRODUCTION
Duravent Model 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 insu-
lated.
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 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 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 re-
quirements for all parts in the product line. Before specifying a design
or beginning an installation please carefully review these instructions.
Maintenance Notes:
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 inspec-
tion 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 in-
ner 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.
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