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This is a technical specification document for HVAC Power Ventilators at Tinker Air Force Base, Oklahoma, issued in April 2019.
The specification requires contractors to provide complete power roof ventilator systems with all components and accessory equipment. Ventilators must comply with UL 705 and be designed for windloads per ASCE 7 with a minimum installed design capacity of 130 miles per hour. Eight fan types are specified: Type C-PRV and CB-PRV (centrifugal direct drive and V-belt drive), Type P-PRV and PB-PRV (propeller direct drive and V-belt drive), Type VA-PRV and VAB-PRV (vane axial direct drive and V-belt drive), and Type TA-PRV and TAV-PRV (tube axial direct drive and V-belt drive). All fans require vibration-isolated drives with elastomers and drive components mounted in compartments isolated from the airstream. Motors must include thermal-overload protection and local disconnects; single-phase 120V, 60Hz split-phase motors are required for units under 1/2 horsepower, while three-phase 460V, 60Hz motors are required for 1/2 horsepower and larger units. Materials include aluminum alloy (ASTM B209, B37), zinc-coated steel (ASTM A653/A653M), and fibrous glass with specified composition and quality standards. Systems must include bases, roof curbs, flashing flanges, noise baffles, gravity-operated back-draft dampers with adjustable counterweights, bird screens, and sound baffles. Installation requires submission of shop drawings and installation drawings; post-installation testing must verify proper operation using FFT vibration analysis with maximum vibration limits of 0.075 in/sec at 1x run speed and 0.04 in/sec at other multiples. Final test reports must be submitted to the Contracting Officer for inclusion in the maintenance database, and detailed record drawings are required upon completion.
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Ti nker AFB, OK TAFB Techni cal Spr ci f i cat i ons 2019
SECTI ON 23 34 23. 00 40
HVAC POWER VENTI LATORS
PART 1 GENERAL
Pr ovi de a power r oof vent i l at or syst em compl et e wi t h al l component s and accessor y equi pment as speci f i ed i n t hi s sect i on.
Sect i on 23 00 00 AI R SUPPLY, DI STRI BUTI ON, VENTI LATI ON, AND EXHAUST SYSTEMS appl i es t o wor k speci f i ed i n t hi s sect i on.
1. 1 REFERENCES
The publ i cat i ons l i s t ed bel ow f or m a par t of t hi s speci f i cat i on t o t he ext ent r ef er enced. The publ i cat i ons ar e r ef er r ed t o wi t hi n t he t ext by t he basi c desi gnat i on onl y.
AMERI CAN SOCI ETY OF CI VI L ENGI NEERS ( ASCE)
ASCE 7 ( 2010; Er r at a 2011; Supp 1 2013) Mi ni mum Desi gn Loads f or Bui l di ngs and Ot her Structures
ASTM I NTERNATI ONAL ( ASTM)
ASTM A653/ A653M ( 2015; E 2016) St andar d Speci f i cat i on f or St eel Sheet , Zi nc- Coat ed ( Gal vani zed) or Zi nc- I r on Al l oy- Coat ed ( Gal vanneal ed) by t he Hot - Di p Pr ocess
ASTM B209 ( 2014) St andar d Speci f i cat i on f or Al umi num and Al umi num- Al l oy Sheet and Pl at e
ASTM B209M ( 2014) St andar d Speci f i cat i on f or Al umi num and Al umi num- Al l oy Sheet and Pl at e ( Met r i c)
ASTM B37 ( 2008; R 2013) St andar d Speci f i cat i on f or Al umi num f or Use i n I r on and St eel Manufacturer
NATI ONAL AERONAUTI CS AND SPACE ADMI NI STRATI ON ( NASA)
RCBEA GUI DE ( 2004) NASA Rel i abi l i t y Cent er ed Bui l di ng and Equi pment Accept ance Gui de
UNDERWRI TERS LABORATORI ES ( UL)
UL 705 ( 2004; Repr i nt Mar 2016) UL St andar d f or Saf et y Power Vent i l at or s
1. 2 SUBMITTALS
Gover nment appr oval i s r equi r ed f or submi t t al s wi t h a " G" desi gnat i on;
submi t t al s not havi ng a " G" desi gnat i on ar e f or Cont r act or Qual i t y Cont r ol appr oval and f or i nf or mat i on onl y Submi t t al s wi t h an " S" ar e f or i ncl usi on i n t he Sust ai nabi l i t y Not ebook, i n conf or mance t o Sect i on
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01 33 29 SUSTAI NABI LI TY REPORTI NG. Submi t t he f ol l owi ng i n accor dance wi t h Sect i on 01 33 00 SUBMI TTAL PROCEDURES:
SD- 02 Shop Dr awi ngs
Shop Dr awi ngs; G
I nst al l at i on Dr awi ngs; G
SD- 03 Pr oduct Dat a
Housi ng; G
Fan; G
Mot or ; G
Bases; G
Roof Cur bs; G
Damper s; G
Scr eens; G
Sound Baf f l es; G
SD- 06 Test Repor t s
Fi nal Test Repor t s; G
SD- 11 Cl oseout Submi t t al s
Recor d Dr awi ngs; G
1. 3 QUALI TY CONTROL
Rat e and l abel vent i l at or s i n accor dance wi t h t he appl i cabl e st andar ds of t he Ai r Movement Cont r ol Associ at i on ( AMCA) , and i ndi cat e i f t he l i cense bear s t he AMCA seal f or bot h ai r and sound.
PART 2 PRODUCTS
2. 1 SYSTEM DESCRI PTI ON
2. 1. 1 Desi gn Requi r ement s
Submi t t he manuf act ur er ' s cat al og dat a, i ncl udi ng equi pment and per f or mance dat a, f or power r oof vent i l at or ( s) . As a mi ni mum, i ncl ude t he f ol l owi ng dat a:
a. Fan Type
b. Fan Speci f i cat i ons, i ncl udi ng:
( 1) Number of r ot at i ng f an bl ades/ vanes
( 2) Number of st at i onar y f an bl ades/ vanes
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( 3) Rot at i ng speed( s)
( 4) Number of bel t s ( i f bel t - dr i ven)
( 5) Bel t l engt hs- measur ed at t he pi t ch l i ne ( i f bel t - dr i ven)
( 6) Di amet er of t he dr i ve sheave at t he dr i ve pi t ch l i ne ( i f belt-driven)
( 7) Di amet er of t he dr i ven sheave at t he dr i ve pi t ch l i ne ( i f belt-driven)
c. Locat i on of I nst al l at i on
d. I dent i f i cat i on Number
e. Dat e of I nst al l at i on ( Requi r ed or Act ual Accept ance Dat e) f . Appl i cabl e r ef er ence dr awi ng number ( s)
Submi t det ai l ed shop dr awi ngs f or power r oof vent i l at or syst ems.
Pr ovi de r oof vent i l at or s t hat compl y wi t h UL 705 and ar e f ur ni shed compl et e wi t h bases, cur bs, f l ashi ng f l anges, noi se baf f l es, damper s, damper cont r ol s, l ouver s, and scr eens, as i ndi cat ed.
Pr ovi de vent i l at or s t hat ar e desi gned f or wi ndl oads i n accor dance wi t h ASCE 7 wi t h t he i nst al l ed desi gn not l ess t han 130 mi l es per hour wi ndl oad. Ensur e t hat t he st r uct ur al br aci ng i s pr oper l y spaced t o accommodat e t hi s l oadi ng and meet s t he desi gn r equi r ement s of t he cover i ng mat er i al . Ensur e t hat vent i l at or s ar e adequat el y r ei nf or ced and wel l - br aced wi t h t he j oi nt s pr oper l y f or med. Ensur e t hat t he edges ar e wi r ed or beaded wher e necessar y t o ensur e r i gi di t y. Pr event gal vani c act i on bet ween di f f er ent met al s i n di r ect cont act by pr ovi di ng nonconduct i ve separ at or s. Make al l sol der i ng even and smoot h.
Pr ovi de cor r osi on- r esi st ant st eel bol t s, r i vet s, and ot her f ast eni ngs used i n connect i on wi t h pr ot ect ed met al .
2. 2 COMPONENTS
2. 2. 1 Housi ng St yl e
Pr ovi de power r oof vent i l at or as i ndi cat ed.
2. 2. 2 Fan Type
Pr ovi de f ans of t he f ol l owi ng t ypes:
2. 2. 2. 1 Type C- PRV Cent r i f ugal , Di r ect Dr i ve
For Type C- PRV vent i l at or s, pr ovi de a cent r i f ugal r oof vent i l at or wi t h di r ect dr i ve, nonover l oadi ng, backwar d- i ncl i ned wheel . Pr ovi de a v i br at i on- i sol at ed dr i ve wi t h an el ast omer . Pr ovi de dr i ve component s t hat ar e mount ed i n a compar t ment i sol at ed f r om t he ai r st r eam.
2. 2. 2. 2 Type CB- PRV Cent r i f ugal , V- Bel t Dr i ve
For Type CB- PRV vent i l at or s pr ovi de a cent r i f ugal r oof vent i l at or wi t h
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V- bel t dr i ve, nonover l oadi ng, backwar d- i ncl i ned wheel . Pr ovi de a v i br at i on- i sol at ed dr i ve wi t h an el ast omer . Pr ovi de dr i ve component s t hat ar e mount ed i n a compar t ment i sol at ed f r om t he ai r st r eam.
2. 2. 2. 3 Type P- PRV Pr opel l er , Di r ect Dr i ve
For Type P- PRV vent i l at or s, pr ovi de a pr opel l er r oof vent i l at or wi t h di r ect dr i ve t hat i s v i br at i on- i sol at ed wi t h an el ast omer . Pr ovi de dr i ve component s t hat ar e mount ed i n a compar t ment i sol at ed f r om t he ai r st r eam.
2. 2. 2. 4 Type PB- PRV Pr opel l er , V- Bel t Dr i ve
For Type PB- PRV vent i l at or s, pr ovi de a pr opel l er r oof vent i l at or wi t h V- bel t dr i ve t hat i s v i br at i on- i sol at ed wi t h an el ast omer . Pr ovi de dr i ve component s t hat ar e mount ed i n a compar t ment i sol at ed f r om t he ai r st r eam.
2. 2. 2. 5 Type VA- PRV Vane Axi al , Di r ect Dr i ve
For Type VA- PRV vent i l at or s, pr ovi de a vane axi al r oof vent i l at or wi t h di r ect dr i ve t hat i s v i br at i on- i sol at ed wi t h an el ast omer .
2. 2. 2. 6 Type VAB- PRV Vane Axi al , V- Bel t Dr i ve
For Type VAB- PRV vent i l at or s, pr ovi de a vane axi al r oof vent i l at or wi t h V- bel t dr i ve t hat i s v i br at i on- i sol at ed wi t h an el ast omer .
2. 2. 2. 7 Type TA- PRV Tube Axi al , Di r ect Dr i ve
For Type TA- PRV vent i l at or s, pr ovi de a t ube axi al r oof vent i l at or wi t h di r ect dr i ve t hat i s v i br at i on- i sol at ed wi t h an el ast omer .
2. 2. 2. 8 Type TAV- PRV Tube Axi al , V- Bel t Dr i ve
For Type TAV- PRV vent i l at or s, pr ovi de a t ube axi al r oof vent i l at or wi t h V- bel t dr i ve t hat i s v i br at i on- i sol at ed wi t h an el ast omer .
2. 2. 3 Fan Mot or
Pr ovi de si ngl e- phase, 120 V, 60 Hz, spl i t - phase, bel t - dr i ven mot or s l ess t han 1/ 2 hor sepower , wi t h per manent l y l ubr i cat ed bal l bear i ngs.
Pr ovi de t hr ee- phase , 460 V, 60 Hz mot or s 1/ 2 hor sepower and l ar ger .
Pr ovi de mot or s wi t h l ocal di sconnect s t o al l ow f or f an and mot or mai nt enance. Pr ovi de al l mot or s wi t h t her mal - over l oad pr ot ect i on. For mot or s l ocat ed i n ai r st r eams, use a t ot al l y encl osed t ype.
Use ener gy ef f i c i ent per manent spl i t capaci t or mot or s, s i ngl e phase, 60 Hz di r ect - dr i ve mot or s 1/ 2 hor sepower or l ess.
2. 2. 4 Bases
When bases ar e pr ovi ded wi t h t he vent i l at or s, use f act or y- f or med bases of t he t ype i ndi cat ed, const r uct ed of t he same mat er i al as t he hoods, and of t he t hi ckness necessar y t o meet t he desi gn r equi r ement f or connect i on t o t he r oof . Pr ovi de bases t hat ar e sui t abl e f or r ai sed- cur b mount i ng wher e i ndi cat ed. For m cur b f l anges of t he base as cap f l ashi ng, ext endi ng at l east 2 i nches over t he r oof i ng base. Wher e i ndi cat ed or r equi r ed, ext end t he shaf t s of vent i l at or s a suf f i c i ent di st ance t hr ough t he suppor t i ng
Apr i l 2019 Page 4 SECTI ON 23 34 23. 00 40 const r uct i on t o per mi t at t achment of vent duct s.
2. 2. 5 Roof Cur bs
Pr ovi de f act or y- f or med met al vent i l at or cur bs of t he t ype and desi gn r equi r ed f or t he vent i l at or and sui t abl e f or t he r oof conf i gur at i on and flashing.
Pr ovi de j ob- bui l t cur bs t hat conf or m t o t he r ecommendat i ons of t he vent i l at or manuf act ur er , t hat ar e s i zed cor r ect l y f or t he vent i l at or , and t hat ar e sui t abl e f or t he t ype of suppor t i ng r oof const r uct i on.
2. 2. 6 Back- Dr af t Damper s
Pr ovi de gr avi t y- oper at ed back- dr af t damper s wi t h adj ust abl e count er wei ght s const r uct ed of t he same mat er i al as f an housi ng.
I nt er l ock damper - act uat i ng mot or wi t h t he f an mot or .
2. 2. 7 Screens
Pr ovi de bi r d scr eens wi t h f r ames const r uct ed of t he same mat er i al as t hat used i n t he vent i l at or s and ensur e t he scr eens ar e secur el y at t ached i n a manner t hat per mi t s easy r emoval f or access and cl eani ng.
2. 2. 8 Sound Baf f l es
Pr ovi de per manent l y const r uct ed sound baf f l es t hat ar e i mper vi ous t o moi st ur e. Pr ovi de r emovabl e baf f l es.
2. 3 MATERIALS
Pr ovi de manuf act ur er s ' st andar d mat er i al s.
2. 3. 1 Al umi num Al l oy
Pr ovi de al umi num al l oy i n accor dance wi t h ASTM B209 and ASTM B37.
2. 3. 2 Zi nc- Coat ed St eel
Pr ovi de zi nc- coat ed st eel i n accor dance wi t h ASTM A653/ A653M.
2. 3. 3 Fi br ous Gl ass
Pr ovi de f i br ous gl ass vent i l at or s t hat ar e mol ded f r om a gl ass- f i ber - r ei nf or ced pol yest er r esi n wi t h a pi gment ed pol yest er r esi n gel coat i n t he manuf act ur er ' s st andar d col or , and t hat ar e bet ween 0. 02 i nches and 0. 06 i nches t hi ck. Pr ovi de a mat r i x mat er i al t hat i s not l ess t han 30 per cent , by wei ght , of chopped- f i ber and r andom- st r and gl ass f i ber s, and t hat i s t hor oughl y sat ur at ed and i mpr egnat ed wi t h not mor e t han 70 per cent hi gh- sol i ds pol yest er r esi n wi t h not l ess t han 5 per cent ant i mony t r i oxi de f i r e- r et ar dant addi t i ve. Pr ovi de mat er i al t hat i s smoot h and uni f or m i n t ext ur e, and col or t hr oughout t he cr oss sect i on and t hat i s shat t er - r esi st ant . Ensur e t hat t he mat er i al i s f r ee f r om vi sual def ect s, f or ei gn i ncl usi ons, cr acks, cr azi ng, di e l i nes, pi nhol es, and st r i at i ons. Ensur e t hat t he mat er i al has no ar eas t hat ar e unsat ur at ed or l acki ng r esi n, and no ar eas wi t h excessi ve r esi n.
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PART 3 EXECUTI ON
3. 1 INSTALLATION
Submi t i nst al l at i on dr awi ngs f or power r oof vent i l at or s.
I nst al l power r oof vent i l at or s i n accor dance wi t h t he manuf act ur er ' s i nst al l at i on i nst r uct i ons. Coor di nat e i nst al l at i on of vent i l at or s wi t h ot her wor k. Coor di nat e anchor s, at t achment s, and ot her i t ems t o be bui l t f or i nst al l at i on as t he wor k pr ogr esses. Ri gi dl y i nst al l vent i l at or s i n a weat her t i ght and wat er t i ght manner t hat i s f r ee f r om vi br at i on. Ref er t o Sect i on 23 05 48. 00 40 VI BRATI ON AND SEI SMI C CONTROLS FOR HVAC PI PI NG AND EQUI PMENT f or v i br at i on i sol at i on consi der at i ons.
3. 1. 1 Lubrication
Ensur e t he movabl e par t s of damper s and r el at ed oper at i ng har dwar e ar e l ubr i cat ed i n accor dance wi t h manuf act ur er ' s pr i nt ed i nst r uct i ons and t hat t hey oper at e smoot hl y and qui et l y wi t hout bi ndi ng.
3. 2 FI ELD QUALI TY CONTROL
3. 2. 1 Tests
Af t er i nst al l at i on, t est each power r oof vent i l at or t o demonst r at e pr oper oper at i on at i ndi cat ed and speci f i ed per f or mance r equi r ement s, i ncl udi ng t he r unni ng, bal ance, noi se, and pr oper di r ect i on of f an r ot at i on.
3. 2. 1. 1 Vi br at i on Anal yzer
Use an f ast Four i er t r ansf or m ( FFT) anal yzer t o measur e v i br at i on l evel s.
Ensur e t hat t he vent i l at or meet s t he f ol l owi ng char act er i st i cs: a dynami c r ange gr eat er t han 70 dB; a mi ni mum of 400 l i ne r esol ut i on; a f r equency r esponse r ange of 5 Hz t o 10 KHz ( 300 600000 cpm) ; t he capaci t y t o per f or m ensembl e aver agi ng, t he capabi l i t y t o use a Hanni ng wi ndow; aut o- r angi ng f r equency ampl i t ude; a mi ni mum ampl i t ude accur acy over t he sel ect ed f r equency r ange of pl us or mi nus 20 per cent or pl us or mi nus 1. 5 dB.
Use ei t her a st ud- mount ed accel er omet er or mount t he accel er omet er usi ng a r ar e ear t h, l ow- mass magnet and a sound di sk ( or f i ni shed sur f ace) wi t h t he FFT anal yzer t o col l ect dat a. Pr ovi de t he accel er omet er wi t h a mass and mount i ng t hat mi ni mal l y i nf l uence t he f r equency r esponse of t he syst em over t he sel ect ed measur ement r ange.
3. 2. 2 Acceptance
Pr i or t o f i nal accept ance, use pr eci s i on al i gnment devi ces t o demonst r at e t hat t he f an and mot or ar e al i gned as speci f i ed by t he manuf act ur er .
Pr i or t o f i nal accept ance, ver i f y conf or mance t o speci f i cat i ons wi t h v i br at i on anal ysi s. Ensur e v i br at i on l evel s ar e not mor e t han . 075 i n/ sec at 1 t i mes t he r un speed and at t he f an/ bl ade f r equency, and not mor e t han
0. 04 i n/ sec at ot her mul t i pl es of t he r un speed.
3. 2. 3 Fi nal Test Repor t s
Pr ovi de f i nal t est r epor t s t o t he Cont r act i ng Of f i cer . Pr ovi de r epor t s
Apr i l 2019 Page 6 SECTI ON 23 34 23. 00 40 wi t h a cover l et t er / sheet c l ear l y mar ked wi t h t he syst em name, dat e, and t he wor ds " Fi nal Test Repor t s - For war d t o t he Syst ems Engi neer / Condi t i on Moni t or i ng Of f i ce/ Pr edi ct i ve Test i ng Gr oup f or i ncl usi on i n t he Mai nt enance Dat abase. "
3. 3 CLOSEOUT ACTI VI TI ES
Submi t det ai l ed r ecor d dr awi ngs upon compl et i on of t he i nst al l at i on.
- - End of Sect i on - -
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