commercial factory- built chimneys & ducts...factory-built features • inner wall – seam...
TRANSCRIPT
COMMERCIALFACTORY- BUILT
CHIMNEYS & DUCTS
Rev 11-8-12
Use / Application
• Boiler Flue
• Engine/Generator Exhaust
• Kitchen Hood Exhaust (Grease Duct)– Don’t forget dishwasher exhaust
• Pizza Ovens
• Coffee Roasters
• Commercial Dryer Exhaust
• Laboratory Hood Fume Exhaust
• Processing Ovens and much more
• Flanged ends joined with overlapping V-shaped profile bands
• Variety of versions – single wall to heavily insulated double wall
• All models are interchangeable on the same job, giving opportunity to value engineer it
Factory-Built Features
Multiple IVSI ModelsDouble wall high temp
fiber insulated duct
Model VSIDouble wall air insulated duct
Model NSingle wall duct
Factory-Built Features
• Inner wall – seam welded, 20 ga 304 or 316 stainless steel tubes with ½” wide flanged ends
• Outer wall – spot welded overlap, 24 ga Alz, 304, or 316 options.
• High temp blanket insulation in 1”, 2”, 3”(grease only), or 4” thickness
Typical Joint Assembly
OUTER PIPE
VEE BAND GROOVE
VERTICALUSE P-600 HERE
1/4" DEEP INUSE APPROPRIATE SEALANT
INSTALLATIONSON OUTDOOR
OUTER CHANNEL BAND
INNER VEE BAND
INSULATIONINNER PIPE
FLANGED INNER JOINTSSPACER
USE P-600 ON BOTH
HORIZ/SLOPED INSTALLSSIDES FOR OUTDOOR
• Wide variety of system components– Tees, Wyes, Elbows, Expansion Joints, Access Doors,
Supports, Sq-Rnd Transitions, Inline Drains, etc
Factory-Built Features
Boiler Use
• All fuels– Non-condensing gas appliances
• Mid efficiency (Category 1 or 3)• High efficiency condensing models (Cat 2 or 4) should use
Heatfab® (AL29-4C® stainless inner wall)– Oil– Wood/coal
• Typically recommend 1” air or 1” blanket models in 304/Alz and 304/304 for exterior apps if Alz is not painted
• Typically use low temp silicone sealant (P600)– Good for 600°F flue temps and lower
Engine Use• Diesel or Natural gas fired
• Great aesthetic alternative to traditional schedule 40 pipe that is traditionally used– Usually recommend 2” blanket model
• Positive pressure application– No adjustables allowed in system– Our pipe (w/o adjustables) will handle up to 60” w.c.
positive pressure
• We utilize Bellows Joints for our expansion components
• We always incorporate ER valves (aka Pressure Relief Valves)– Expensive item to forget in a budget quote
• Use high temp cement-like sealant (P2000) in v-band
Grease Duct Use• All models are grease duct rated
– Model N single wall• 18” clearance to combustibles
– VSI (1” airspace)• Clearances per instructions
– IVSI-C1, C2, C4• Clearances per instructions
– IVSI-Z3, Z4• Zero clearances and 2 hour fire rated
• Use low temp silicone sealant (P600)
• All around better alternative to field wrapped black iron– Fully code compliant (IMC, UMC, NFPA 96)
• Can intermix Ampco models and can intermix black iron with our pipe
• Zero to minimal slope required by Ampco
Duct going to hood Factory-Built duct in vertical shaft has superior advantage over welded
black iron – NO fire watch
2000 F Internal Fire Test (30 min)
Great Multi-Use Pipe
Thank You For Your Time