section 15810 duct work & accessories

5/28/2018 Section 15810 Duct Work & Accessories

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DUCT WORK & ACCESSORIES - SPECIFICATION

1.0 GENERAL

1.1 Quality Assurance:

1.1.1 Manufacturers Qualifications: Firms regularly engaged in manufacture ofmetal ductwork/accessories (as applicable) of types materials and si!esre"uired w#ose products #a$e been in satisfactory use in similar ser$icefor not less t#an % years.

1.1.& 'nstallers Qualifications: Firm wit# at least years of successfulinstallation eperience of pro*ects wit# metal ductwork systems similar tot#at re"uired for pro*ect.

1.1. +odes and ,tandards:

,M-+- standards: +omply wit# ,M-+-s 0-+ 2uct+onstruction ,tandards Metal and fleible for fabrication andinstallation of metal ductwork.

-,03-4 ,tandards: +omply wit# -,03-4 0andbook 4"uipmentolume +#apter 1 2uct +onstruction5 for fabrication and installation ofmetal ductwork.

1.2 Submittals

1.&.1 6roduct 2ata: ,ubmit manufacturers tec#nical product data andinstallation instructions for metal ductwork materials and products.

1.&.& Maintenance 2ata : ,ubmit maintenance data and partslists for metal ductwork materials and products. 'nclude t#isdata product data s#op drawings and record drawings inmaintenance manual.

2.0 PRODUCTS

2.1 Materials

2.1.1 Balancing Da!"#$.

'nstall $olume control dampers in accessible locations at all branc#connections and w#ere$er necessary to ad*ust t#e flow of air to securecorrect distribution. +asing and blades s#all be made of gal$ani!ed s#eetmetal and s#all be e"uipped wit# an appro$ed de$ice for fastening in anydesired position. 7#is de$ice s#all be suc# t#at t#e damper cannot mo$e orrattle and pointer s#all indicate t#e position of t#e damper from t#e outsideof t#e finis#ed duct insulation.

2ampers s#all be aerofoil multileaf opposed blade wit# blade #eig#t notmore t#an 189 mm.


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-ll blades s#all be operated by a single operating "uadrant wit# gears andlinks as necessary.

,pindles s#all be noncorrodible passing t#roug# bearings made of specialplastic temperature resistant to 199 deg. +. +apped bearings s#all be

pro$ided on non dri$e side.

7#e w#ole damper assembly s#all be mounted in a gal$ani!ed frame wit#flanges.

2ampers s#all be ;< listed or certified by an e"ual regulatory aut#ority.

2.1.2 Bac%#a'( Da!"#$.

=ackdraft dampers s#all be low leakage wit# parallel blades and neopreneedge seals.

2ampers frames s#all be constructed from gal$ani!ed s#eet steel wit#-luminium blades. =lade stub s#afts s#all be brass wit# 6+ bearings.,ealing strips on blades s#all be polyester foam.

6ressure relief dampers s#all be multiparallel blade wit# weig#ted armclosing assist. 7#e frame s#all be anodi!ed -luminium c#annel sectionswit# formed -luminium blades. Maimum blade lengt# s#all be 199 mmand polyester foam seating strips s#all be incorporated on blade edges.=earings s#all be in 6+ wit# noncorrodible s#afts.

2.1.) Fi#" Da!"#$.

6ro$ide w#ere re"uired by ordinances or codes fire dampers made to=ritis# standard =.,. >?@ or ort# -merican ,tandards or .F.6.-. A9-and complete wit# angle iron frame ?& deg. + fusible link pi$ot rods andspring catc#es. 4nlarge duct sections around fire dampers to allow 199Bunrestricted duct area w#ile in open position. 6ro$ide appro$ed type accessdoors wit# airtig#t gaskets for inspection and ser$icing of fire dampers.Fire dampers s#all be & #our rated and s#all be labelled by manufacturer.2amper position (open/s#ut) s#all be monitored at t#e =M, t#roug# amicro switc#.

6ro$ide fire dampers in all ducts o$er 1&% s".cm. in area in t#e following

locations w#et#er or not specifically re"uired by ordinances and codes:

2uct entering and lea$ing fire s#afts (duct s#afts).

2ucts passing t#roug# designated fire walls.

2ucts t#roug# floors and not encased in fire s#aft.

2ucts lea$ing and entering plant area.

2ucts entering and lea$ing storage areas.

C#ere fire dampers are located remote from fire partition duct between firedamper and partition s#all be encased in double metal lat#e and plaster orot#er fireproofing acceptable to -ut#orities #a$ing *urisdiction.


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Fire damper construction s#all be of 1.&MM gal$ani!ed steel casing 9.8mmgal$ani!ed steel blades fitted wit# catc# plates stainless steel closuresprings and stainless steel seals. =lades s#all be out of t#e air stream.Fusible links s#all be rated for a fusing temperature of ?& deg. + unless

ot#erwise specified.

2amper installation frame s#all be supplied by t#e fire dampermanufacturer.

2ampers s#all be ;< listed or appro$ed by an e"ual certification aut#ority.

section 15810 duct work & accessories

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