COMMERCIAL KITCHEN EXHAUST SYSTEMS...EXHAUST SYSTEMS Single-Wall Kitchen Exhaust Systems: Models...

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COMMERCIAL KITCHEN EXHAUST SYSTEMS Grease Ducts, Exhaust Systems for Pizza Ovens, Dishwashers, BBQ Ovens and Industrial Cooking Appliances www.jeremiasinc.com

Transcript of COMMERCIAL KITCHEN EXHAUST SYSTEMS...EXHAUST SYSTEMS Single-Wall Kitchen Exhaust Systems: Models...

Page 1: COMMERCIAL KITCHEN EXHAUST SYSTEMS...EXHAUST SYSTEMS Single-Wall Kitchen Exhaust Systems: Models SWKL, SWFL, and SWGD SWKL = Conical in diameters up to 16‘‘ I.D. SWFL = Flanged

COMMERCIAL KITCHEN EXHAUST SYSTEMSGrease Ducts, Exhaust Systems for Pizza Ovens, Dishwashers, BBQ Ovens and Industrial Cooking Appliances www.jeremiasinc.com

Page 2: COMMERCIAL KITCHEN EXHAUST SYSTEMS...EXHAUST SYSTEMS Single-Wall Kitchen Exhaust Systems: Models SWKL, SWFL, and SWGD SWKL = Conical in diameters up to 16‘‘ I.D. SWFL = Flanged

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COMMERCIAL KITCHEN EXHAUST SYSTEMS

SINGLE AND DOUBLE-WALL KITCHENEXHAUST SYSTEMSAll current NFPA 96 and International Mechanical Code editions now recognize UL 1978 Grease Duct as a safer alternative to 16-gauge field-welded black steel.

Single-wall is a direct replacement for field-welded black steel. It may be field wrapped per NFPA-96 for reduced or zero clearance.

Single-wall requires 18 inch clearance to combustibles if left unwrapped.

Double-wall Reduced Clearance has 1.5” of ceramic fiber, compressed into 1.25” space between the inner liner and outer jacket. This gives a dramatic reduced clearance to combustibles of:

> 3 through 14” ID = 2”> 16 through 24” = 3”> 26 through 36” = 4”

Double-wall Reduced Clearance is ideal for single story buildings where the vent does not penetrate a fire-rated shaft assembly. For example, a 14” O.D. pipe can easily pass through a space between beams that are 24 inches apart and have adequate clearance.

Also available are DWKL+2, DWFL+2, DWGD+2 which have 2.25‘‘ of ceramic fiber insulation. DWKL+3, DWFL+3, DWGD+3 which have 3.25‘‘ of ceramic fiber insulation. And DWKL+4, DWFL+4, DWGD+4 which have 4.25‘‘ of ceramic fiber insulation. These different thicknesses are offered to comply with engineering specifications as required.

The special Double-wall Zero Clearance models utilize 3.25‘‘ of a special higher density ceramic fiber insulation between the inner liner and outer jacket. The Zero Clearance models are also a two-hour fire-rated-resistant enclosure/duct assembly.

SWKLSWGD Ø6”-Ø16”

DWKL DWFL+1 DWGD+1

DWFL-ZCDWGD-ZC

Jeremias grease ducts come in single-wall, double-wall reduced clearance, and double-wall zero clearance options:

> Single-wall, Models SWKL, SWFL, and SWGD> Double-wall Reduced Clearance, Models DWKL, DWFL+1, and DWGD+1> Double-wall Zero Clearance, Models DWFL-ZC and DWGD-ZC

SWFLSWGD Ø18”-Ø36”

Jeremias is the leader in UL Listed Factory-Built Grease Duct systems. Our weld-free sealing systems are UL evaluated and tested in various ways, including:

> 500°F continuous internal temperature> 2000°F for 30 minutes to simulate a grease fire> Leakage test involving burning refined pork lard> Leakage test filled with water> 90” W.C. of pressure testing> Support, Impact, Load, and Volume testing

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COMMERCIAL KITCHEN EXHAUST SYSTEMS

SINGLE AND DOUBLE-WALL KITCHENEXHAUST SYSTEMS

Single-Wall Kitchen Exhaust Systems:

Models SWKL, SWFL, and SWGD

SWKL = Conical in diameters up to 16‘‘ I.D.

SWFL = Flanged in diameters 6‘‘ through 36‘‘ I.D

SWGD = Grease Duct UL 1978 Labeled only (uses standard stainless steel alloy)

Jeremias Single-wall kitchen exhaust systems are a direct replacement for field-welded steel. Eliminating the welding process on-site dramatically reduces labor and saves time. The installed single-wall grease duct system can then be field wrapped with insulation for reduced or zero clearance per NFPA 96.

Stock Kits are designed to achieve short SKU parts lists that can be used for almost any commercial kitchen hood exhaust. They consist of a Base Kit which contains the basic elements needed to install a system from the hood to a fan. These are boxed on a pallet and used as a base. Then additional lengths and items are boxed on top as needed for each order and quickly shipped.

These Single-wall systems also make an ideal dishwasher exhaust or any other replacement for welded single-wall.

> UL 1978 Standard, Grease Duct> UL 103 Standard, Building Heating Appliance Chimney> UL 103 Additional Positive Pressure Listing to 90” W.C.

Double-Wall Reduced Clearance Kitchen Exhaust Systems

Models DWKL, DWFL+1, and DWGD+1

DWKL = Conical in diameters up to 16‘‘ I.D.

DWFL+1 = Flanged in diameters 6‘‘ through 36‘‘ I.D.

DWGD+1 = Flanged UL 1978 and UL 103 and UL 103HT labels only (uses standard stainless steel alloy inner liner)

These models are stainless steel and factory insulated Grease Duct for use in commercial kitchen exhaust systems. They are UL Listed and designed for use with all fuels; gas, oil, and solid fuels including wood. They are also ideal for exhausting pizza ovens and coffee roasters.

> UL 1978 Standard, Grease Duct (ULC S662 Standard for Factory-Built Grease Ducts)> UL 103 Standard, Building Heating Appliance Chimney (Industrial Type 540°C Chimney)> UL 103 Additional Positive Pressure Listing to 90” W.C.> UL 103 Additional Type HT Listing

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COMMERCIAL KITCHEN EXHAUST SYSTEMS

DOUBLE-WALL ZERO CLEARANCE AND FIRE-RATED DUCT ASSEMBLY

Models DWFL-ZC and DWGD-ZC

The ZC models are all stainless steel and factory insulated Grease Duct for use in commercial kitchen exhaust systems which meet the requirements set forth by Underwriters Laboratories for the UL 2221 Standard. They are heavily insulated for zero clearance-to-combustibles and a two-hour fire-rated shaft assembly. Special through-wall fire penetrations are used when passing through a fire-rated wall or shaft.

DWFL-ZC may also be used for many other fire rated duct assemblies such as Type B Gas Vent and Special Gas Vent venting systems. Both DWFL-ZC and DWGD-ZC eliminate the need for fire dampers in HVAC ducts, laundry, and fume venting applications.

DWFL-ZC

> UL 2221 Standard, Fire Resistive Grease Duct Enclosure Assemblies> UL 1978 Standard, Grease Duct (ULC S662 Standard for Factory-Built Grease Ducts)> UL 1738 Standard, Venting Systems for Gas-Burning Appliances, Categories II, III & IV (ULC S636 Standard for Type BH Gas Venting Systems)> UL 441 Standard, Gas Vents (ULC S605 Standard for Gas Vents)> 90” W.C. Pressure Listing for all applications

DWGD-ZC

> UL 2221 Standard, Fire Resistive Grease Duct Enclosure Assemblies> UL 1978 Standard, Grease Duct (ULC S662 Standard for Factory-Built Grease Ducts)> 90” W.C. Pressure Listing for all applications

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COMMERCIAL KITCHEN EXHAUST SYSTEMS

DOUBLE-WALL ZERO CLEARANCE AND FIRE-RATED DUCT ASSEMBLY

UL 2221 Testing

Jeremias Model ZC is listed to UL 1978 and UL 2221 Standards. These standards require an Internal Fire Test where flue gasses entering the duct are elevated to 2,000 F for 30 minutes. During this time the temperature on the exterior of the duct is measured and must not exceed a specified temperature threshold. Additionally UL 2221 requires an External Fire test to simulate the duct engulfed in a building fire. The test requires the duct to be located in an oven for 2 hours with temperatures up to 2,000F. The system must maintain its integrity and the duct section passing through the firestop must not exceed specified temperatures. Immediately after the fire exposure, the duct is quenched with a fire hose spray causing a thermal shock. The duct must maintain its integrity and also prevent the water stream from passing through the firestop.

The result is a Code approved two-hour fire rated enclosure,

Jeremias DWGD-ZC shown after multiple 30 minute exposures at 2000°F.

Rectangular black steel fails UL Test

For comparison, Jeremias subjected a rectangular 16 gauge welded-steel duct with two layers of fire wrap insulation to the same internal fire test. After three minutes, the rectangular duct collapsed and the test was stopped.

Watch this YouTube video here:

Go to: www.jeremiasinc.com

Click on

At top right of home page

Research and Development

Opened in 2013, Jeremias R&D Lab in Logan, Ohio has the industry’s most experienced lab technicians on staff and incorporates the latest equipment and technologies. This enables Jeremias to provide industry leadership with a continued focus on new factory-built exhaust applications and unique listings.

Before

After (3 minutes @ 2000°F)

After multiple 30 minute exposures at 2000°F

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Version: March 2017

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