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TAFB Technical Specifications 2019 - Section 23 36 00.00 40: Air Terminal Units
This is a technical specification document for air terminal unit equipment and installation at Tinker Air Force Base (AFB), Oklahoma, effective April 2019. The specification details requirements for eight types of air terminal units: bypass single-duct, dual-duct, fan-powered, induction, shutoff single-duct, integral-diffuser, high-pressure dual-duct mixing boxes, and low-pressure dual-duct mixing boxes. All units must be rated according to AHRI 880 I-P and carry the ARI Seal certification. The specification references multiple industry standards including ASHRAE 130, ASTM C1071, NFPA 70 and 90A, ADC Standards Manual, and UL 181.
Key technical requirements include: casing specifications with 0.032 to 0.034-inch steel construction with fibrous-glass duct lining; volume dampers with maximum damper leakage test (MDLT) performance verified per AHRI 880 I-P at 2-3 percent nominal airflow; hot-water heating coils with copper tube and aluminum-plate fins leak-tested to 200 psig; and electric heating coils with dual over-temperature protection and nickel-chrome elements. Control options span pneumatic, electronic, and direct digital control (DDC) systems. Installation requirements mandate level and plumb positioning per NFPA 90A, with factory-authorized service representatives required for field inspection, testing, commissioning, and operator training. Submittal requirements include preconstruction records, shop drawings, product data, test reports, spare parts lists, and operation/maintenance manuals, with Government approval required for all shop drawings and product data.
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Ti nker AFB, OK TAFB Techni cal Spr ci f i cat i ons 2019
SECTI ON 23 36 00. 00 40
AI R TERMI NAL UNI TS
PART 1 GENERAL
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.
AI R DI FFUSI ON COUNCI L ( ADC)
ADC St andar ds Manual ( 2008; 5t h Edi t i on) Fl exi bl e Duct Per f or mance I nst al l at i on St andar ds
AI R- CONDI TI ONI NG, HEATI NG AND REFRI GERATI ON I NSTI TUTE ( AHRI )
AHRI 880 I - P ( 2011) Per f or mance Rat i ng of Ai r Ter mi nal s
AMERI CAN SOCI ETY OF HEATI NG, REFRI GERATI NG AND AI R- CONDI TI ONI NG
ENGI NEERS ( ASHRAE)
ASHRAE 130 ( 2008) Met hod of Test i ng f or Rat i ng Duct ed Ai r Ter mi nal Uni t s
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 C1071 ( 2016) St andar d Speci f i cat i on f or Fi br ous Gl ass Duct Li ni ng I nsul at i on ( Ther mal and Sound Absor bi ng Mat er i al )
ASTM E84 ( 2016) St andar d Test Met hod f or Sur f ace Bur ni ng Char act er i st i cs of Bui l di ng Materials
NATI ONAL ELECTRI CAL MANUFACTURERS ASSOCI ATI ON ( NEMA)
NEMA 250 ( 2014) Encl osur es f or El ect r i cal Equi pment ( 1000 Vol t s Maxi mum)
NATI ONAL FI RE PROTECTI ON ASSOCI ATI ON ( NFPA)
NFPA 70 ( 2017) Nat i onal El ect r i cal Code
NFPA 90A ( 2015) St andar d f or t he I nst al l at i on of Ai r Condi t i oni ng and Vent i l at i ng Syst ems
Apr i l 2019 Page 1 SECTI ON 23 36 00. 00 40
UNDERWRI TERS LABORATORI ES ( UL)
UL 181 ( 2013) Fact or y- Made Ai r Duct s and Ai r Connectors
UL 486A- 486B ( 2013; Repr i nt Jan 2016) Wi r e Connect or s
1. 2 ADMI NI STRATI VE REQUI REMENTS
Coor di nat e l ayout and i nst al l at i on of ai r t er mi nal uni t s and suspensi on syst em wi t h ot her const r uct i on t hat penet r at es cei l i ngs or i s suppor t ed by t hem, i ncl udi ng l i ght f i x t ur es, HVAC equi pment , f i r e- suppr essi on syst em, communi cat i on and secur i t y syst ems, and par t i t i on assembl i es.
1. 2. 1 Pr e- I nst al l at i on Meet i ngs
Submi t i t emi zed l i s t s f or al l mat er i al s, equi pment , and f i xt ur es t o be i ncor por at ed i n t he wor k 30 days pr i or t o commencement of wor k. Ensur e l i s t i ncl udes manuf act ur er ' s st y l e or cat al og number s, speci f i cat i on and dr awi ng r ef er ence number s, war r ant y i nf or mat i on, and f abr i cat i on s i t e i nf or mat i on. Submi t pr oduct dat a f or each t ype of ai r t er mi nal uni t i ndi cat ed, i ncl udi ng r at ed capaci t i es, f ur ni shed speci al t i es, sound- power r at i ngs, and accessor i es:
a. Bypass Si ngl e- Duct Ai r Ter mi nal Uni t s
b. Dual - Duct Ai r Ter mi nal Uni t s
c. Fan- Power ed Ai r Ter mi nal Uni t s
d. I nduct i on Ai r Ter mi nal Uni t s
e. Shut of f Si ngl e- Duct Ai r Ter mi nal Uni t s f . I nt egr al - Di f f user Ai r Ter mi nal Uni t s
g. Hi gh- Pr essur e Dual - Duct Mi xi ng Boxes
h. Low- Pr essur e Dual - Duct Mi xi ng Boxes
Submi t r ecor ds of exi st i ng condi t i ons consi st i ng of t he r esul t s of Cont r act or ' s sur vey of wor k ar ea condi t i ons and f eat ur es of exi st i ng st r uct ur es and f aci l i t i es wi t hi n and adj acent t o t he j obsi t e.
Commencement of wor k const i t ut es accept ance of exi st i ng condi t i ons.
Submi t shop dr awi ngs whi ch det ai l equi pment assembl i es and i ndi cat e di mensi ons, r equi r ed cl ear ances, met hod of f i el d assembl y, component s, and l ocat i on and si ze of each f i el d connect i on. I ncl ude a schedul e showi ng uni que model desi gnat i on, r oom l ocat i on, model number , s i ze, and accessor i es f ur ni shed. I ncl ude wi r i ng di agr ams t o show power , s i gnal , and cont r ol wi r i ng.
Pr ovi de uni t s wi t h t he conf i gur at i on, capaci t y, and st at i c- pr essur e char act er i st i cs i ndi cat ed.
Ensur e di mensi onal dat a st at ed const i t ut es nomi nal s i z i ng, whi ch has been adj ust ed by t he manuf act ur er when necessar y t o accommodat e acoust i c mat er i al t hi ckness.
Apr i l 2019 Page 2 SECTI ON 23 36 00. 00 40
Ensur e uni t s pr oposed ar e i dent i cal t o uni t s havi ng at l east 2 year s of pr oven sat i sf act or y f i el d ser vi ce.
Pr ovi de cer t i f i cat i on t hat uni t s and t he l i s t of spar e par t s ar e ADC St andar ds Manual t est ed and r at ed.
1. 3 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 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- 01 Pr econst r uct i on Submi t t al s
Recor ds of Exi st i ng Condi t i ons
SD- 02 Shop Dr awi ngs
Bypass Si ngl e- Duct Ai r Ter mi nal Uni t s; G
Dual - Duct Ai r Ter mi nal Uni t s; G
Fan- Power ed Ai r Ter mi nal Uni t s; G
I nduct i on Ai r Ter mi nal Uni t s; G
Shut of f Si ngl e- Duct Ai r Ter mi nal Uni t s; G
I nt egr al - Di f f user Ai r Ter mi nal Uni t s; G
Hi gh- Pr essur e Dual - Duct Mi xi ng Boxes; G
Low- Pr essur e Dual - Duct Mi xi ng Boxes; G
SD- 03 Pr oduct Dat a
Bypass Si ngl e- Duct Ai r Ter mi nal Uni t s; G
Dual - Duct Ai r Ter mi nal Uni t s; G
Fan- Power ed Ai r Ter mi nal Uni t s; G
I nduct i on Ai r Ter mi nal Uni t s; G
Shut of f Si ngl e- Duct Ai r Ter mi nal Uni t s; G
I nt egr al - Di f f user Ai r Ter mi nal Uni t s; G
Hi gh- Pr essur e Dual - Duct Mi xi ng Boxes; G
Low- Pr essur e Dual - Duct Mi xi ng Boxes; G
SD- 06 Test Repor t s
Test Repor t
Apr i l 2019 Page 3 SECTI ON 23 36 00. 00 40
SD- 07 Cer t i f i cat es
Li st of Spar e Par t s
SD- 10 Oper at i on and Mai nt enance Dat a
Oper at i on and Mai nt enance Manual s
SD- 11 Cl oseout Submi t t al s
Recor d Dr awi ngs
1. 4 QUALI TY CONTROL
I ndi cat e on dr awi ngs t he si ze, pr of i l es, and di mensi onal r equi r ement s of ai r t er mi nal uni t s t hat ar e based on t he speci f i c syst em i ndi cat ed.
Conf or m t o NFPA 70, Ar t i c l e 100 f or el ect r i cal component s, devi ces, and accessor i es. Li st and l abel i t ems as def i ned i n NFPA 70, Ar t i c l e 100, by a t est i ng agency accept abl e t o aut hor i t i es havi ng j ur i sdi ct i on, and mar ked f or i nt ended use.
Ensur e Ai r Ter mi nal s ar e cer t i f i ed under t he AHRI 880 I - P Cer t i f i cat i on Pr ogr am and car r y t he ARI Seal .
PART 2 PRODUCTS
2. 1 EQUIPMENT
2. 1. 1 Ver i f i cat i on of Per f or mance
Rat e ai r t er mi nal uni t s accor di ng t o AHRI 880 I - P.
2. 1. 2 Bypass Si ngl e- Duct Ai r Ter mi nal Uni t s
2. 1. 2. 1 Configuration
Pr ovi de di ver t i ng- damper assembl y i nsi de uni t casi ng wi t h cont r ol component s l ocat ed i nsi de a pr ot ect i ve met al shr oud.
2. 1. 2. 2 Casing
Pr ovi de 0. 034- i nch st eel casi ng. Pr ovi de 1/ 2- i nch t hi ck, coat ed, f i br ous- gl ass duct casi ng l i ni ng compl yi ng wi t h ASTM C1071. Secur e wi t h adhesi ve. For t he ai r i nl et , pr ovi de r ound st ub connect i on f or duct at t achment . For t he ai r out l et , pr ovi de s- sl i p and dr i ve connect i ons.
Pr ovi de r emovabl e panel s, wi t h ai r t i ght gasket s, f or access t o di ver t er and ot her par t s r equi r i ng ser vi ce, adj ust ment , or mai nt enance.
2. 1. 2. 3 Di ver t er Assembl y
Pr ovi de gal vani zed- st eel gat e, wi t h pol yet hyl ene l i near bear i ngsal umi num bl ade, wi t h nyl on- f i t t ed pi vot poi nt s_____ di ver t er assembl y.
2. 1. 2. 4 Mul t i - Out l et At t enuat or Sect i on
Pr ovi de , 10- i nch di amet er col l ar s, each wi t h l ocki ng but t er f l y bal anci ng damper.
Apr i l 2019 Page 4 SECTI ON 23 36 00. 00 40
2. 1. 2. 5 Hot - Wat er Heat i ng Coi l
Pr ovi de a copper t ube heat i ng coi l , mechani cal l y expanded i nt o al umi num- pl at e f i ns. Ver i f y heat i ng coi l passes under wat er l eak t est t o 200 psi g.
2. 1. 2. 6 El ect r i c Heat i ng Coi l
Pr ovi de a f act or y i nst al l ed and wi r ed sl i p- i n- t ype, open- coi l desi gn wi t h i nt egr al cont r ol box. I ncl ude t he f ol l owi ng f eat ur es:
a. Pr i mar y and secondar y over t emper at ur e pr ot ect i on
b. Ni ckel chr ome 80/ 20 heat i ng el ement s
c. Ai r f l ow swi t ch
d. Non- i nt er l ocki ng di sconnect swi t ch
e. Fuses ( f or coi l s mor e t han 48 A) f . Mer cur y cont act or s
g. Pneumat i c- el ect r i c swi t ches and r el ays.
h. Magnet i c cont act or f or each st ep of cont r ol ( f or t hr ee- phase coi l s)
2. 1. 2. 7 El ect r i c Cont r ol s
Pr ovi de a 24 V damper act uat or t hat i s power ed cl osed and power ed open wi t h a mi cr oswi t ch t o ener gi ze heat i ng cont r ol c i r cui t .
Pr ovi de a wal l - mount i ng el ect r i c t ype t her most at wi t h t emper at ur e di spl ay i n Cel s i us and Fahr enhei t , and wi t h a space t emper at ur e set poi nt .
Pr ovi de a changeover t her most at of duct - mount i ng, el ect r i c t ype t hat r ever ses act i on of cont r ol s when t he duct t emper at ur e r i ses 70 degr ees F.
2. 1. 2. 8 El ect r oni c Cont r ol s
Pr ovi de a 24 V damper act uat or t hat i s power ed cl osed and power ed open.
2. 1. 2. 9 Pneumat i c Cont r ol s
Pr ovi de a pneumat i c damper oper at or wi t h a 8 t o 13 psi g spr i ng r ange.
Pr ovi de a f act or y cal i br at ed and f i el d adj ust abl e vel oci t y cont r ol l er capabl e of handl i ng mi ni mum and maxi mum ai r vol umes. Ensur e cont r ol l er s mai nt ai n a const ant ai r f l ow di ct at ed by t her most at wi t hi n 5 per cent of set poi nt whi l e compensat i ng f or i nl et st at i c- pr essur e var i at i ons up t o 4- i nches wg when t est ed i n accor dance wi t h ASHRAE 130. Pr ovi de cont r ol l er wi t h a mul t i poi nt vel oci t y sensor . Locat e vel oci t y sensor s i n col d- deck ai r i nl et s and ai r out l et s.
2. 1. 2. 10 Thermostat
Pr ovi de a wal l - mount i ng el ect r oni c t ype t her most at wi t h i nt egr al cont r ol of r oom t emper at ur e. Ensur e t her most at i s t i me- pr opor t i onal t ype wi t h a r eheat - coi l cont r ol f eat ur e. Di spl ay t emper at ur e set - poi nt s i n Cel s i us
Apr i l 2019 Page 5 SECTI ON 23 36 00. 00 40 and Fahr enhei t . Ensur e t he auxi l i ar y swi t ch ener gi zes t he heat i ng cont r ol c i r cui t , and changeover t her mi st or has a r ever se act i on f eat ur e.
2. 1. 3 Dual - Duct Ai r Ter mi nal Uni t s
2. 1. 3. 1 Configuration
Pr ovi de t wo vol ume damper s i nsi de t he uni t casi ng wi t h mi xi ng at t enuat or sect i on and cont r ol component s l ocat ed i nsi de a pr ot ect i ve met al shr oud.
2. 1. 3. 2 Casing
Pr ovi de 0. 032- i nch casi ng. I ncl ude wi t h casi ng an i nt egr al mi xi ng baf f l e t o ef f i c i ent l y mi x t he hot and col d ai r st r eam.
a. Casi ng Li ni ng
Pr ovi de 0. 034- i nch casi ng. Pr ovi de 1/ 2- i nch t hi ck, coat ed, f i br ous- gl ass duct casi ng l i ni ng compl yi ng wi t h ASTM C1071. Secur e wi t h adhesi ve.
Cover l i ner wi t h nonpor ous f oi l .
At t ach a 3/ 4- i nch t hi ck adhesi ve of pol yur et hane f oam i nsul at i on compl yi ng with UL 181 er osi on r equi r ement s, and havi ng a maxi mum f l ame- spr ead i ndex of 25, and a maxi mum smoke- devel oped i ndex of 50, f or bot h i nsul at i on and adhesi ve, when t est ed accor di ng t o ASTM E84. Coat any cut edges of f i ber gl ass exposed t o t he ai r st r eam wi t h a NFPA 90A appr oved seal .
For t he ai r i nl et , pr ovi de r ound st ub connect i on f or duct at t achment . For t he ai r out l et , pr ovi de s- sl i p and dr i ve connect i ons. Pr ovi de r emovabl e panel s wi t h an ai r t i ght gasket f or access t o t he di ver t er and ot her par t s r equi r i ng ser vi ce, adj ust ment , or mai nt enance.
2. 1. 3. 3 Vol ume Damper
Pr ovi de a gal vani zed st eel vol ume damper wi t h per i pher al gasket and sel f - l ubr i cat i ng bear i ngs.
Per f or m a Maxi mum Damper Leakage Test ( MDLT) i n conf or mance t o AHRI 880 I - P, f or 3 per cent of nomi nal ai r f l ow at 3- i nch wg i nl et st at i c pr essur e.
Sel ect ei t her Damper Posi t i on, Hot Deck: nor mal l y open or Damper Posi t i on, Col d Deck: nor mal l y open.
2. 1. 3. 4 At t enuat or Sect i on
Pr ovi de 0. 034- i nch sheet met al . Pr ovi de 1/ 2- i nch t hi ck, coat ed, f i br ous- gl ass duct casi ng l i ni ng compl yi ng wi t h ASTM C1071. Secur e wi t h adhesi ve. Cover l i ner wi t h nonpor ous f oi l . Cover l i ner wi t h nonpor ous f oi l and per f or at ed met al .
At t ach a 3/ 4- i nch t hi ck adhesi ve of pol yur et hane f oam i nsul at i on compl yi ng with UL 181 er osi on r equi r ement s, and havi ng a maxi mum f l ame- spr ead i ndex of 25, and a maxi mum smoke- devel oped i ndex of 50, f or bot h i nsul at i on and adhesi ve, when t est ed accor di ng t o ASTM E84. Coat any cut edges of f i ber gl ass exposed t o t he ai r st r eam wi t h NFPA 90A appr oved seal .
2. 1. 3. 5 Mul t i - Out l et At t enuat or Sect i on
Pr ovi de t wot hr eef our _____, 6 i nch 8 i nch 10 i nch _____ di amet er col l ar s;
Apr i l 2019 Page 6 SECTI ON 23 36 00. 00 40 each wi t h l ocki ng but t er f l y bal anci ng damper .
2. 1. 3. 6 Pneumat i c Cont r ol s
a. Pneumat i c Damper Oper at or
Pr ovi de a pneumat i c damper oper at or wi t h a 8 t o 13 psi g spr i ng r ange.
b. Vel oci t y Cont r ol l er s
Pr ovi de a f act or y cal i br at ed vel oci t y cont r ol l er , f i el d adj ust abl e t o mi ni mum and maxi mum ai r vol umes. Ensur e cont r ol l er s mai nt ai n const ant ai r f l ow di ct at ed by t her most at wi t hi n 5 per cent of set poi nt whi l e compensat i ng f or i nl et st at i c- pr essur e var i at i ons up t o 4- i nch wg when t est ed i n accor dance wi t h ASHRAE 130. Pr ovi de cont r ol l er wi t h a mul t i poi nt vel oci t y sensor . Locat e vel oci t y sensor s i n col d- deck ai r i nl et and ai r out l et .
c. Ther most at
Pr ovi de a wal l - mount i ng pneumat i c t ype t her most at wi t h appr opr i at e mount i ng har dwar e.
2. 1. 3. 7 El ect r oni c Cont r ol s
a. Damper Act uat or
Pr ovi de a 24 V, power ed cl osed, power ed open damper act uat or .
b. Vel oci t y Cont r ol
Pr ovi de a f act or y cal i br at ed cont r ol l er , wi t h set t i ngs f or mi ni mum and maxi mum ai r vol umes, and f i el d adj ust abl e at t her most at . Ensur e cont r ol l er mai nt ai ns const ant ai r f l ow di ct at ed by t her most at wi t hi n 5 per cent of set poi nt whi l e compensat i ng f or i nl et st at i c- pr essur e var i at i ons up t o 4- i nch wg, when t est ed i n accor dance wi t h ASHRAE 130.
Pr ovi de cont r ol l er wi t h a mul t i poi nt vel oci t y sensor . Locat e vel oci t y sensor s i n col d- deck ai r i nl et and ai r out l et .
c. Ther most at
Pr ovi de a wal l - mount i ng el ect r oni c t ype t her most at wi t h i nt egr al cont r ol of r oom t emper at ur e, t i me- pr opor t i onal wi t h r eheat - coi l cont r ol f eat ur e.
Pr ovi de a t emper at ur e set - poi nt di spl ay i n Cel s i us and Fahr enhei t .
2. 1. 3. 8 DDC Cont r ol s
a. Damper Act uat or s
Pr ovi de a 24 V, power ed cl osed, power ed open damper act uat or .
b. Vel oci t y Sensor s
Pr ovi de a mul t i poi nt ar r ay wi t h vel oci t y sensor s i n col d- deck and hot - deck ai r i nl et and ai r out l et .
c. Ter mi nal Uni t Cont r ol l er
Pr ovi de a pr essur e i ndependent , var i abl e- ai r const ant vol ume cont r ol l er
Apr i l 2019 Page 7 SECTI ON 23 36 00. 00 40 wi t h el ect r oni c ai r f l ow t r ansducer s f act or y cal i br at ed t o mi ni mum and maxi mum ai r vol umes. I ncl ude t he f ol l owi ng f eat ur es:
( 1) Pr opor t i onal , pl us i nt egr al cont r ol of r oom t emper at ur e
( 2) Ti me- pr opor t i onal r eheat - coi l cont r ol
( 3) Occupi ed and unoccupi ed oper at i ng mode
( 4) Remot e r eset of ai r f l ow or t emper at ur e set poi nt s
( 5) Adj ust i ng and moni t or i ng wi t h por t abl e t er mi nal
d. Room Sensor
Pr ovi de a wal l mount i ng r oom sensor , wi t h t emper at ur e set - poi nt adj ust ment and access f or connect i on of por t abl e oper at or t er mi nal .
2. 1. 3. 9 Cont r ol Sequence
Modul at e col d- ai r damper t o mai nt ai n r oom t emper at ur e. Modul at e war m- ai r damper t o mai nt ai n const ant ai r f l ow.
2. 1. 4 Fan- Power ed Ai r Ter mi nal Uni t s
2. 1. 4. 1 Configuration
Pr ovi de vol ume- damper assembl y and f an i n ser i es ar r angement i nsi de uni t casi ng wi t h cont r ol component s i nsi de a pr ot ect i ve met al shr oud.
2. 1. 4. 2 Casing
Pr ovi de 0. 034- i nch casi ng. I ncl ude wi t h casi ng an i nt egr al mi xi ng baf f l e t o ef f i c i ent l y mi x t he hot and col d ai r st r eam.
a. Casi ng Li ni ng
Pr ovi de 1- i nch t hi ck wi t h 1. 5 pounds per cubi c f oot densi t y, coat ed, f i br ous- gl ass duct casi ng l i ni ng compl yi ng wi t h ASTM C1071. Secur e wi t h adhesi ve. Cover l i ner wi t h nonpor ous f oi l and per f or at ed met al .
At t ach a 3/ 4- i nch t hi ck adhesi ve of pol yur et hane f oam i nsul at i on compl yi ng with UL 181 er osi on r equi r ement s, and havi ng a maxi mum f l ame- spr ead i ndex of 25, and a maxi mum smoke- devel oped i ndex of 50, f or bot h i nsul at i on and adhesi ve, when t est ed accor di ng t o ASTM E84. Coat any cut edges of f i ber gl ass exposed t o t he ai r st r eam wi t h NFPA 90A appr oved seal .
Pr ovi de a r ound st ub connect i on f or t he ai r i nl et duct at t achment . For t he ai r out l et pr ovi de s- sl i p and dr i ve connect i ons. Pr ovi de r emovabl e panel s f or access t o di ver t er and ot her par t s r equi r i ng ser vi ce, adj ust ment , or mai nt enance; wi t h ai r t i ght gasket and quar t er - t ur n gasket s.
2. 1. 4. 3 Vol ume Damper
Pr ovi de a gal vani zed st eel vol ume damper wi t h per i pher al gasket and sel f - l ubr i cat i ng bear i ngs.
Per f or m a Maxi mum Damper Leakage Test ( MDLT) i n conf or mance t o AHRI 880 I - P, f or 2 per cent of nomi nal ai r f l ow at 3- i nch wg i nl et st at i c pr essur e, when
Apr i l 2019 Page 8 SECTI ON 23 36 00. 00 40 t est ed i n accor dance wi t h ASHRAE 130.
Sel ect damper posi t i on: Nor mal l y open.
2. 1. 4. 4 Fan Sect i on
Pr ovi de a gal vani zed- st eel pl enum, wi t h di r ect - dr i ve, f or war d- cur ved f an wi t h ai r f i l t er and backdr af t damper .
a. Li ni ng
Pr ovi de 1- i nch t hi ck, coat ed, f i br ous- gl ass duct l i ner compl yi ng wi t h ASTM C1071; secur ed wi t h adhesi ve. Cover l i ner wi t h nonpor ous f oi l and per f or at ed met al .
b. Mot or
Compl y wi t h r equi r ement s i n Sect i on 26 60 13. 00 40 LOW- VOLTAGE MOTORS f or Mul t i - speed mot or s. Pr ovi de mot or whi ch i ncl udes a speed cont r ol f eat ur e t hat i s i nf i ni t el y adj ust abl e wi t h pneumat i c- el ect r i c and el ect r oni c cont r ol s. Pr ovi de r ubber i sol at or s wi t h f an- mot or assembl y.
c. Ai r Fi l t er
Pr ovi de 2- i nch t hi ck, f i ber gl ass t hr owaway ai r - f i l t er .
2. 1. 4. 5 At t enuat or Sect i on
Pr ovi de 0. 03- i nch al umi num sheet met al . Pr ovi de 1/ 2- i nch, coat ed, f i br ous- gl ass duct casi ng l i ni ng compl yi ng wi t h ASTM C1071. Secur e wi t h adhesi ve. Cover l i ner wi t h nonpor ous f oi l and per f or at ed met al .
At t ach a 3/ 4- i nch t hi ck adhesi ve of pol yur et hane f oam i nsul at i on compl yi ng with UL 181 er osi on r equi r ement s, and havi ng a maxi mum f l ame- spr ead i ndex of 25, and a maxi mum smoke- devel oped i ndex of 50, f or bot h i nsul at i on and adhesi ve, when t est ed accor di ng t o ASTM E84. Coat any cut edges of f i ber gl ass exposed t o t he ai r st r eam wi t h NFPA 90A appr oved seal .
2. 1. 4. 6 Hot - Wat er Heat i ng Coi l
Pr ovi de a copper t ube mechani cal l y expanded i nt o al umi num- pl at e f i ns; l eak t est ed under wat er t o 200 psi g; and f act or y i nst al l ed.
2. 1. 4. 7 El ect r i c Heat i ng Coi l
Pr ovi de a s l i p- i n- t ype, open- coi l desi gn wi t h i nt egr al cont r ol box f act or y wi r ed and i nst al l ed. I ncl ude t he f ol l owi ng f eat ur es:
a. Pr i mar y and secondar y over - t emper at ur e pr ot ect i on
b. Ni ckel chr ome 80/ 20 heat i ng el ement s
c. Fan i nt er l ock cont act s
d. Non- i nt er l ocki ng di sconnect swi t ch
e. Fuses ( f or coi l s mor e t han 48 A) f . Mer cur y cont act or s
Apr i l 2019 Page 9 SECTI ON 23 36 00. 00 40
g. Pneumat i c- el ect r i c swi t ches and r el ay
h. Magnet i c cont act or f or each st ep of cont r ol ( f or t hr ee- phase coi l s)
2. 1. 4. 8 Fact or y- Mount ed and - Wi r ed Cont r ol s
Mount el ect r i cal component s i n cont r ol box wi t h r emovabl e cover .
I ncor por at e s i ngl e- poi nt el ect r i cal connect i on t o power sour ce.
Pr ovi de f act or y mount ed cont r ol t r ansf or mer f or cont r ol vol t age on el ect r i c and el ect r oni c cont r ol uni t s wi t h t er mi nal st r i p i n cont r ol box f or f i el d wi r i ng of t her most at and power sour ce.
Pr ovi de f an and cont r ol s t o t er mi nal st r i p, wi t h t er mi nal l ugs whi ch mat ch quant i t i es, s i zes, and mat er i al s of br anch- ci r cui t conduct or s f or wi r i ng t er mi nat i ons. Encl ose t er mi nal l ugs i n t er mi nal box t hat i s s i zed accor di ng t o NFPA 70.
Fact or y- mount a f used t ype di sconnect swi t ch.
2. 1. 4. 9 Cont r ol Panel Encl osur e
Pr ovi de cont r ol panel encl osur e conf or mi ng t o NEMA 250, Type 1, wi t h access panel seal ed f r om ai r f l ow and mount ed on si de of uni t .
2. 1. 4. 10 El ect r i c Cont r ol s
Pr ovi de a 24 V damper act uat or wi t h wal l - mount i ng el ect r i c t her most at and appr opr i at e mount i ng har dwar e.
2. 1. 4. 11 Pneumat i c Cont r ol s
a. Pneumat i c Damper Oper at or
Pr ovi de a pneumat i c damper oper at or wi t h a 8 t o 13 psi g spr i ng r ange.
b. Vel oci t y Cont r ol l er s
Pr ovi de a f act or y cal i br at ed vel oci t y cont r ol l er , f i el d adj ust abl e t o mi ni mum and maxi mum ai r vol umes. Ensur e cont r ol l er s mai nt ai n const ant ai r f l ow di ct at ed by t her most at wi t hi n 5 per cent of set poi nt whi l e compensat i ng f or i nl et st at i c- pr essur e var i at i ons up t o 4- i nch wg when t est ed i n accor dance wi t h ASHRAE 130. Pr ovi de cont r ol l er wi t h a mul t i poi nt vel oci t y sensor . Locat e vel oci t y sensor s i n col d- deck ai r i nl et and ai r out l et .
c. Ther most at
Pr ovi de a wal l - mount i ng pneumat i c t ype t her most at wi t h appr opr i at e mount i ng har dwar e.
2. 1. 4. 12 El ect r oni c Cont r ol s
Pr ovi de a bi - di r ect i onal damper oper at or and mi cr opr ocessor - based cont r ol l er wi t h i nt egr al ai r f l ow t r ansducer and r oom sensor compat i bl e wi t h t emper at ur e cont r ol s, havi ng t he f ol l owi ng f eat ur es:
a. Pr opor t i onal , pl us i nt egr al cont r ol of r oom t emper at ur e
Apr i l 2019 Page 10 SECTI ON 23 36 00. 00 40
b. Ti me- pr opor t i onal r eheat - coi l cont r ol
c. Occupi ed and unoccupi ed oper at i ng mode
d. Remot e r eset of ai r f l ow or t emper at ur e set poi nt s
e. Adj ust i ng and moni t or i ng wi t h por t abl e t er mi nal f . Communi cat i on wi t h t emper at ur e- cont r ol syst em
2. 1. 5 I nduct i on Ai r Ter mi nal Uni t s
2. 1. 5. 1 Configuration
Pr ovi de a vol ume- damper assembl y i nsi de t he uni t casi ng wi t h a mechani cal i nduct i on damper mount ed on t he casi ng wi t h cont r ol component s l ocat ed i nsi de a pr ot ect i ve met al shr oud.
2. 1. 5. 2 Casing
Pr ovi de 0. 032- i nch casi ng. Ensur e t he casi ng i ncl udes an i nt egr al mi xi ng baf f l e t o ef f i c i ent l y mi x t he hot and col d ai r st r eam.
a. Casi ng Li ni ng
Pr ovi de 1- i nch t hi ck, coat ed, f i br ous- gl ass duct casi ng l i ni ng compl yi ng with ASTM C1071. Secur e wi t h adhesi ve.
For t he ai r i nl et pr ovi de r ound st ub connect i on f or duct at t achment . For t he ai r out l et pr ovi de s- sl i p and dr i ve connect i ons s i ze mat chi ng i nl et s i ze. Pr ovi de r emovabl e panel s wi t h an ai r t i ght gasket , f or access t o di ver t er and ot her par t s r equi r i ng ser vi ce, adj ust ment , or mai nt enance.
2. 1. 5. 3 Vol ume Damper
Pr ovi de a gal vani zed st eel vol ume damper wi t h per i pher al gasket and sel f - l ubr i cat i ng bear i ng.
Per f or m a Maxi mum Damper Leakage Test ( MDLT) i n conf or mance t o AHRI 880 I - P, f or 2 per cent of nomi nal ai r f l ow at 3- i nch wg i nl et st at i c pr essur e, when t est ed i n accor dance wi t h ASHRAE 130.
Sel ect Damper Posi t i on, nor mal l y open.
2. 1. 5. 4 I nduct i on Damper
Pr ovi de gal vani zed- st eel , mul t i - bl ade assembl y wi t h sel f - l ubr i cat i ng bearings.
2. 1. 5. 5 Hot - Wat er Heat i ng Coi l
Pr ovi de a wi t h a f act or y i nst al l ed copper t ube mechani cal l y expanded i nt o al umi num- pl at e f i ns and l eak t est ed under wat er t o 200 psi g.
2. 1. 5. 6 El ect r i c Heat i ng Coi l
Pr ovi de a s l i p- i n- t ype, open- coi l desi gn wi t h i nt egr al cont r ol box f act or y wi r ed and i nst al l ed. I ncl ude t he f ol l owi ng f eat ur es:
Apr i l 2019 Page 11 SECTI ON 23 36 00. 00 40
a. Pr i mar y and secondar y over - t emper at ur e pr ot ect i on
b. Ni ckel chr ome 80/ 20 heat i ng el ement s
c. Ai r f l ow swi t ch
d. Non- i nt er l ocki ng di sconnect swi t ch
e. Fuses ( f or coi l s mor e t han 48 A) f . Mer cur y cont act or s
g. Pneumat i c- el ect r i c swi t ches and r el ays
h. Magnet i c cont act or f or each st ep of cont r ol ( f or t hr ee- phase coi l s)
2. 1. 5. 7 Pneumat i c Cont r ol s
a. Damper Oper at or
Pr ovi de a pneumat i c, 5 t o 10 psi g spr i ng r ange damper oper at or .
b. Vel oci t y Cont r ol l er
Pr ovi de a f act or y cal i br at ed vel oci t y cont r ol l er ; f i el d adj ust abl e t o mi ni mum and maxi mum ai r vol umes. Ensur e cont r ol l er i s capabl e of mai nt ai ni ng const ant ai r f l ow di ct at ed by a t her most at wi t hi n 5 per cent of set poi nt whi l e compensat i ng f or i nl et st at i c- pr essur e var i at i ons up t o 4 i nch wg when t est ed i n accor dance wi t h ASHRAE 130. Ensur e cont r ol l er has a mul t i poi nt vel oci t y sensor at ai r i nl et .
c. I nduct i on Damper Oper at or
Pr ovi de a pneumat i c, spr i ng r ange i nduct i on damper oper at or mat chi ng r eset r ange of cont r ol l er .
d. Ther most at
Pr ovi de a wal l - mount i ng pneumat i c t ype t her most at wi t h appr opr i at e mount i ng har dwar e.
2. 1. 5. 8 El ect r oni c Cont r ol s
a. Damper Act uat or
Pr ovi de a pneumat i c, 5 t o 10 psi g spr i ng r ange damper oper at or .
b. Vel oci t y Cont r ol l er
Pr ovi de a f act or y cal i br at ed vel oci t y cont r ol l er ; f i el d adj ust abl e t o mi ni mum and maxi mum ai r vol umes. Ensur e cont r ol l er i s capabl e of mai nt ai ni ng const ant ai r f l ow di ct at ed by t her most at wi t hi n 5 per cent of set poi nt whi l e compensat i ng f or i nl et st at i c- pr essur e var i at i ons up t o 4- i nch wg when t est ed i n accor dance wi t h ASHRAE 130. Ensur e cont r ol l er has a mul t i poi nt vel oci t y sensor at ai r i nl et .
c. I nduct i on Damper Oper at or
Apr i l 2019 Page 12 SECTI ON 23 36 00. 00 40
Pr ovi de a pneumat i c, spr i ng r ange i nduct i on damper oper at or mat chi ng r eset r ange of cont r ol l er .
d. Ther most at
Pr ovi de a wal l - mount i ng pneumat i c t ype t her most at wi t h appr opr i at e mount i ng har dwar e wi t h t he f ol l owi ng f eat ur es:
( 1) Pr opor t i onal , pl us i nt egr al cont r ol of r oom t emper at ur e
( 2) Ti me- pr opor t i onal r eheat - coi l cont r ol
( 3) Temper at ur e set - poi nt di spl ay i n Cel s i us and Fahr enhei t
2. 1. 6 Shut of f Si ngl e- Duct Ai r Ter mi nal Uni t s
2. 1. 6. 1 Configuration
Pr ovi de a vol ume- damper assembl y i nsi de uni t casi ng wi t h cont r ol component s l ocat ed i nsi de a pr ot ect i ve met al shr oud.
2. 1. 6. 2 Casing
Pr ovi de 0. 034- i nch casi ng. Ensur e t he casi ng i ncl udes an i nt egr al mi xi ng baf f l e t o ef f i c i ent l y mi x t he hot and col d ai r st r eam.
a. Casi ng Li ni ng
Pr ovi de 1- i nch t hi ck, coat ed, f i br ous- gl ass duct casi ng l i ni ng compl yi ng with ASTM C1071. Secur e wi t h adhesi ve. Cover l i ner wi t h nonpor ous f oi l and per f or at ed met al .
At t ach a 3/ 4- i nch adhesi ve of pol yur et hane f oam i nsul at i on compl yi ng wi t h UL 181 er osi on r equi r ement s, and havi ng a maxi mum f l ame- spr ead i ndex of 25, and a maxi mum smoke- devel oped i ndex of 50, f or bot h i nsul at i on and adhesi ve, when t est ed accor di ng t o ASTM E84. Coat any cut edges of f i ber gl ass exposed t o t he ai r st r eam wi t h NFPA 90A appr oved seal .
For t he ai r i nl et pr ovi de r ound st ub connect i on f or duct at t achment . For t he ai r out l et pr ovi de s- sl i p and dr i ve connect i ons. Pr ovi de r emovabl e panel s f or access t o di ver t er and ot her par t s r equi r i ng ser vi ce, adj ust ment , or mai nt enance; wi t h ai r t i ght gasket .
2. 1. 6. 3 Regul at or Assembl y
Pr ovi de ext r uded- al umi num component s wi t h key damper bl ades ont o shaf t wi t h nyl on- f i t t ed pi vot poi nt s l ocat ed i nsi de uni t casi ng.
a. Aut omat i c Fl ow- Cont r ol Assembl y
Mat ch combi ned spr i ng r at es f or each vol ume- r egul at or s i ze wi t h machi ned dashpot f or st abl e oper at i on. Pr ovi de f act or y- cal i br at ed and f i el d- adj ust abl e assembl y wi t h shaf t ext ensi on f or connect i on t o ext er nal l y mount ed cont r ol act uat or .
2. 1. 6. 4 Regul at or Assembl y
Pr ovi de syst em- ai r - power ed bel l ows sect i on i ncor por at i ng pol ypr opyl ene bel l ows f or vol ume r egul at i on and t her most at i c cont r ol . Ensur e t he
Apr i l 2019 Page 13 SECTI ON 23 36 00. 00 40 bel l ows oper at e at t emper at ur es f r om 0 t o 140 degr ees F; ar e i mper vi ous t o moi st ur e and f ungus; ar e sui t abl e f or 10- i nch wg st at i c pr essur e when t est ed i n accor dance wi t h ASHRAE 130, and ar e f act or y t est ed f or l eaks.
2. 1. 6. 5 Vol ume Damper
Pr ovi de a gal vani zed st eel vol ume damper wi t h per i pher al gasket and sel f - l ubr i cat i ng bear i ngs.
Per f or m a Maxi mum Damper Leakage Test ( MDLT) i n conf or mance t o AHRI 880 I - P, f or 2 per cent of nomi nal ai r f l ow at 3- i nch wg i nl et st at i c pr essur e when t est ed i n accor dance wi t h ASHRAE 130.
Sel ect Damper Posi t i on, nor mal l y open.
2. 1. 6. 6 At t enuat or Sect i on
Pr ovi de 0. 034- i nch sheet met al at t enuat or sect i on.
Pr ovi de 1/ 2- i nch t hi ck, coat ed, f i br ous- gl ass duct casi ng l i ni ng compl yi ng with ASTM C1071. Secur e wi t h adhesi ve. Cover l i ner wi t h nonpor ous f oi l and per f or at ed met al .
At t ach a 3/ 4- i nch t hi ck adhesi ve of pol yur et hane f oam i nsul at i on compl yi ng with UL 181 er osi on r equi r ement s, and havi ng a maxi mum f l ame- spr ead i ndex of 25, and a maxi mum smoke- devel oped i ndex of 50, f or bot h i nsul at i on and adhesi ve, when t est ed accor di ng t o ASTM E84. Coat any cut edges of f i ber gl ass exposed t o t he ai r st r eam wi t h NFPA 90A appr oved seal .
2. 1. 6. 7 Mul t i - Out l et At t enuat or Sect i on
Pr ovi de t wot hr eef our _____, 6- i nch 8- i nch 10 i nch_____ di amet er col l ar s;
each wi t h l ocki ng but t er f l y bal anci ng damper .
2. 1. 6. 8 Hot - Wat er Heat i ng Coi l
Pr ovi de a copper t ube, mechani cal l y expanded i nt o al umi num- pl at e f i ns;
l eak t est ed under wat er t o 200 psi g; and f act or y i nst al l ed.
2. 1. 6. 9 El ect r i c Heat i ng Coi l
Pr ovi de a s l i p- i n- t ype, open- coi l desi gn wi t h i nt egr al cont r ol box f act or y wi r ed and i nst al l ed. I ncl ude t he f ol l owi ng f eat ur es:
a. Pr i mar y and secondar y over - t emper at ur e pr ot ect i on
b. Ni ckel chr ome 80/ 20 heat i ng el ement s
c. Ai r f l ow swi t ch
d. Non- i nt er l ocki ng di sconnect swi t ch
e. Fuses ( f or coi l s mor e t han 48 A) f . Mer cur y cont act or s
g. Pneumat i c- el ect r i c swi t ches and r el ays
h. Magnet i c cont act or f or each st ep of cont r ol ( f or t hr ee- phase coi l s)
Apr i l 2019 Page 14 SECTI ON 23 36 00. 00 40
2. 1. 6. 10 El ect r i c Cont r ol s
a. Damper Act uat or
Pr ovi de a 24 V, power ed cl osed, power ed open damper act uat or .
b. Ther most at
Pr ovi de a wal l - mount i ng el ect r oni c t ype t her most at wi t h c l ock di spl ay, t emper at ur e di spl ay i n Cel s i us and Fahr enhei t , and space t emper at ur e set point.
2. 1. 6. 11 Pneumat i c Cont r ol s
a. Pneumat i c Damper Oper at or
Pr ovi de a 8 t o 13 psi g spr i ng r ange.
b. Vel oci t y Cont r ol l er s
Pr ovi de a f act or y cal i br at ed cont r ol l er , f i el d adj ust abl e t o mi ni mum and maxi mum ai r vol umes. Ensur e cont r ol l er s mai nt ai n const ant ai r f l ow di ct at ed by t her most at wi t hi n 5 per cent of set poi nt whi l e compensat i ng f or i nl et st at i c- pr essur e var i at i ons up t o 4- i nch wg, when t est ed i n accor dance wi t h ASHRAE 130. Ensur e cont r ol l er has a mul t i poi nt vel oci t y sensor . Locat e vel oci t y sensor s i n col d- deck ai r i nl et and ai r out l et .
c. Ther most at
Pr ovi de a wal l - mount i ng pneumat i c t ype t her most at wi t h appr opr i at e mount i ng har dwar e.
2. 1. 6. 12 El ect r oni c Cont r ol s
Pr ovi de bi di r ect i onal damper oper at or and mi cr opr ocessor - based t her most at wi t h i nt egr al ai r f l ow t r ansducer . Ensur e r oom sensor i s compat i bl e wi t h t emper at ur e cont r ol s speci f i ed.
a. Damper Act uat or
Pr ovi de a 24 V, power ed cl osed, power ed open damper act uat or .
b. Vel oci t y Cont r ol l er
Pr ovi de a f act or y cal i br at ed cont r ol l er set t o mi ni mum and maxi mum ai r vol umes, f i el d adj ust abl e at t her most at . Ensur e cont r ol l er mai nt ai ns const ant ai r f l ow di ct at ed by t her most at wi t hi n 5 per cent of set poi nt whi l e compensat i ng f or i nl et st at i c- pr essur e var i at i ons up t o 4- i nch wg, when t est ed i n accor dance wi t h ASHRAE 130. Ensur e cont r ol l er has a mul t i poi nt vel oci t y sensor . Locat e vel oci t y sensor s i n col d- deck ai r i nl et and ai r out l et .
c. Ther most at
Pr ovi de a wal l - mount i ng el ect r oni c t ype t her most at wi t h i nt egr al cont r ol of r oom t emper at ur e, t i me- pr opor t i onal wi t h r eheat - coi l cont r ol f eat ur e, and di spl ayi ng a t emper at ur e set - poi nt i n Cel s i us and Fahr enhei t .
Apr i l 2019 Page 15 SECTI ON 23 36 00. 00 40
2. 1. 6. 13 DDC Cont r ol s
Pr ovi de bi di r ect i onal damper oper at or s and mi cr opr ocessor - based cont r ol l er . Pr ovi de wi t h r oom sensor t hat i s compat i bl e wi t h t emper at ur e cont r ol s speci f i ed.
a. Damper Act uat or s
Pr ovi de a 24 V, power ed cl osed, power ed open damper act uat or .
b. Ter mi nal Uni t Cont r ol l er
Pr ovi de a pr essur e i ndependent , var i abl e- ai r const ant vol ume cont r ol l er wi t h el ect r oni c ai r f l ow t r ansducer s f act or y cal i br at ed t o mi ni mum and maxi mum ai r vol umes. I ncl ude t he f ol l owi ng f eat ur es:
( 1) Pr opor t i onal , pl us i nt egr al cont r ol of r oom t emper at ur e
( 2) Ti me- pr opor t i onal r eheat - coi l cont r ol
( 3) Occupi ed and unoccupi ed oper at i ng mode
( 4) Remot e r eset of ai r f l ow or t emper at ur e set poi nt s
( 5) Adj ust i ng and moni t or i ng wi t h por t abl e t er mi nal
( 6) Room Sensor
Pr ovi de a wal l mount i ng r oom sensor , wi t h t emper at ur e set - poi nt adj ust ment and access f or connect i on of por t abl e oper at or t er mi nal .
2. 1. 6. 14 Cont r ol Sequence
Make sui t abl e f or oper at i on wi t h duct pr essur es bet ween 0. 25 and 3. 0- i nch wg i nl et st at i c pr essur e. Pr ovi de a f act or y- mount ed and - pi ped, 5- mi cr on f i l t er ; vel oci t y- r eset t i ng, adj ust abl e, hi gh- l i mi t cont r ol , wi t h ampl i f y i ng r el ay. Pr ovi de a syst em- power ed, wal l - mount i ng t her most at .
2. 1. 7 I nt egr al - Di f f user Ai r Ter mi nal Uni t s
2. 1. 7. 1 Configuration
Pr ovi de a vol ume- damper assembl y i nsi de uni t casi ng wi t h di f f user .
2. 1. 7. 2 Casing
Pr ovi de 0. 034- i nch st eel casi ng, i ncl udi ng an i nt egr al mi xi ng baf f l e t o ef f i c i ent l y mi x t he hot and col d ai r st r eam.
a. Casi ng Li ni ng
Pr ovi de 0. 034- i nch st eel casi ng. Pr ovi de 1/ 2- i nch t hi ck, coat ed, f i br ous- gl ass duct casi ng l i ni ng compl yi ng wi t h ASTM C1071. Secur e wi t h adhesi ve. For t he ai r i nl et pr ovi de r ound st ub connect i on f or duct attachment.
2. 1. 7. 3 Vol ume Damper
Pr ovi de gal vani zed st eel wi t h per i pher al gasket and sel f - l ubr i cat i ng
Apr i l 2019 Page 16 SECTI ON 23 36 00. 00 40 bearings.
Damper Posi t i on: Nor mal l y open .
2. 1. 7. 4 Diffuser
Pr ovi de a gal vani zed- st eel i nsul at ed pl enum wi t h ext r uded- al umi num or sheet - st eel di f f user , havi ng f i xed or var i abl e geomet r y desi gned t o oper at e f r om 100 per cent t o mi ni mum ai r f l ow, manual adj ust ment of ai r f l ow di r ect i on, and a baked- enamel f i ni sh.
2. 1. 7. 5 El ect r i c Cont r ol s
a. Damper Act uat or
Pr ovi de a 24 V, power ed cl osed, power ed open.
b. Ther most at
Pr ovi de a wal l - mount i ng el ect r oni c t ype t her most at wi t h c l ock di spl ay, t emper at ur e di spl ay i n Cel s i us and Fahr enhei t , and space t emper at ur e set point.
2. 1. 7. 6 Pneumat i c Cont r ol s
Pr ovi de damper oper at or , vel oci t y cont r ol l er , and t her most at compat i bl e wi t h t emper at ur e cont r ol s speci f i ed.
a. Pneumat i c Damper Oper at or
Pr ovi de a 8 t o 13 psi g spr i ng r ange.
b. Vel oci t y Cont r ol l er
Pr ovi de a f act or y cal i br at ed vel oci t y cont r ol l er , whi ch i s f i el d adj ust abl e t o mi ni mum and maxi mum ai r vol umes capabl e of mai nt ai ni ng const ant ai r f l ow di ct at ed by t her most at wi t hi n 5 per cent of set poi nt whi l e compensat i ng f or i nl et st at i c- pr essur e var i at i ons up t o 4- i nch wg when t est ed i n accor dance wi t h ASHRAE 130. Ensur e cont r ol l er has a mul t i poi nt vel oci t y sensor at ai r i nl et .
c. Ther most at
Pr ovi de a wal l - mount i ng pneumat i c t ype t her most at wi t h appr opr i at e mount i ng har dwar e.
2. 1. 7. 7 El ect r oni c Cont r ol s
Pr ovi de bi di r ect i onal damper oper at or and mi cr opr ocessor - based t her most at wi t h i nt egr al ai r f l ow t r ansducer . Pr ovi de wi t h r oom sensor t hat i s compat i bl e wi t h t emper at ur e cont r ol s speci f i ed.
a. Damper Act uat or
Pr ovi de a 24 V, power ed cl osed, power ed open.
b. Vel oci t y Cont r ol l er
Pr ovi de a f act or y cal i br at ed vel oci t y cont r ol l er , f i el d adj ust abl e t o
Apr i l 2019 Page 17 SECTI ON 23 36 00. 00 40 mi ni mum and maxi mum ai r vol umes. Ensur e cont r ol l er i s capabl e of mai nt ai ni ng const ant ai r f l ow di ct at ed by t her most at wi t hi n 5 per cent of set poi nt whi l e compensat i ng f or i nl et st at i c- pr essur e var i at i ons up t o 4- i nch wg when t est ed i n accor dance wi t h ASHRAE 130. Pr ovi de cont r ol l er wi t h a mul t i poi nt vel oci t y sensor at ai r i nl et .
c. Ther most at
Pr ovi de a wal l - mount i ng el ect r oni c t ype t her most at wi t h i nt egr al cont r ol of r oom t emper at ur e. Ensur e t her most at i s t i me- pr opor t i onal wi t h r eheat - coi l cont r ol f eat ur e, and di spl ays a t emper at ur e set - poi nt i n Cel s i us and Fahr enhei t .
2. 1. 7. 8 Cont r ol Sequence
Make sui t abl e f or oper at i on wi t h duct pr essur es bet ween 0. 25 and 3. 0- i nch wg i nl et st at i c pr essur e. Pr ovi de f act or y- mount ed and - pi ped, 5- mi cr on f i l t er ; vel oci t y- r eset t i ng, adj ust abl e, hi gh- l i mi t cont r ol ; and ampl i f y i ng r el ay wi t h a syst em- power ed, wal l - mount i ng t her most at .
2. 1. 8 Hi gh- Pr essur e Dual - Duct Mi xi ng Boxes
Pr ovi de mechani cal const ant - vol ume cont r ol t ype uni t s wi t h a mechani cal cont r ol l er t hat i s oper at ed by t he ent er i ng mi xed- ai r st r eam and mai nt ai ns a const ant ai r f l ow t hr ough t he uni t .
2. 1. 8. 1 Construction
Pr ovi de f act or y assembl ed uni t s, compl et e wi t h casi ng, ai r mi xi ng val ve assembl y, s i ngl e ai r mi xi ng val ve oper at or , and mechani cal const ant - vol ume cont r ol , r eady f or f i el d mount i ng and connect i on t o cont r ol .
Ver i f y casi ng ext er i or i s not l ess t han 0. 040- i nch t hi ck al umi num, or 20 gage mi l l - gal vani zed st eel wi t h not l ess t han 1. 25 ounces of z i nc per squar e f oot of t wo- si ded sur f ace, conf or mi ng t o ASTM A653/ A653M.
Ensur e casi ng i nt er i or i s acoust i cal l y baf f l ed and l i ned wi t h f i br ous gl ass t hi ck enough t o at t ai n r equi r ed sound power l evel per f or mance and pr ecl ude condensat i on on any ext er i or sur f ace, but i n no case l ess t han 1- i nch. Ver i f y ai r s i de of f i br ous gl ass i s chl or opr ene- i mpr egnat ed and manuf act ur ed t o r esi st del ami nat i on or sur f ace er osi on at ai r vel oci t i es t o 4, 000- f eet per mi nut e. Ensur e l i ner edges exposed t o ai r st r eam ar e pr ot ect ed by met al t ur nover s. Ver i f y l i ner and f i br ous- gl ass baf f l e mat er i al conf or ms t o NFPA 90A.
Ensur e i nl et val ves and connect i ng l i nkage ar e const r uct ed f or modul at i on by a s i ngl e oper at or . Ver i f y hot i nl et val ve i s nor mal l y open, and t he col d i nl et val ve i s nor mal l y c l osed. Ensur e hot and col d i nl et por t s ar e f i el d r ever si bl e.
Ver i f y mechani cal const ant - vol ume cont r ol i s ext er nal l y adj ust abl e and has a cubi c f eet - per - mi nut e gr aduat ed capaci t y scal e, whi ch al so i ndi cat es mi ni mum/ maxi mum r ange of t he uni t .
Ensur e mechani cal const ant - vol ume cont r ol i s ext er nal l y adj ust abl e.
Pr ovi de a cal i br at i on char t wi t h each uni t i ndi cat i ng capaci t y per r evol ut i on of mechani cal const ant - vol ume devi ce. Cl ear l y l abel each uni t wi t h mi ni mum/ maxi mum vol ume r ange t o f aci l i t at e f i el d adj ust ment .
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Ensur e component s subj ect t o f r i c t i on have oi l - i mpr egnat ed br onze bear i ngs, gr aphi t e- i mpr egnat ed nyl on bear i ngs, and l ubr i cant - i mpr egnat ed el ast omer s, cor r osi on- r esi st ant st eel , and si mi l ar mat er i al s.
Ensur e casi ng i s f i t t ed wi t h r i gi d, ai r t i ght access panel s, easi l y r emovabl e and of ampl e s i ze t o gi ve f r ee access t o i nt er i or par t s. Ver i f y c l osur e i s achi eved by spr i ng- r et ai ned, quar t er - t ur n, s l ot t ed- cam capt i ve devi ces, or s i mi l ar oper at i ng f ast ener s.
Ver i f y t hat al l caul k i ng compounds ar e chl or opr ene, pol yur et hane pol ysul f i des, or s i l i cone el ast omer s, wi t h chl or opr ene, pol yur et hane, or v i nyl gasket s.
2. 1. 8. 2 Casi ng Leakage
Ver i f y casi ng j oi nt s ar e seal ed t o pr event l eakage of mor e t han 2 per cent of r at ed capaci t y wi t h al l connect i ons seal ed and wi t h an i nt er nal st at i c pr essur e of 1- i nch wg.
2. 1. 8. 3 I nl et Val ve Leakage
Ver i f y l eakage i n f ul l y c l osed val ve posi t i on does not exceed 2 per cent of uni t r at ed capaci t y agai nst i nl et pr essur e of 8- i nches wg.
2. 1. 8. 4 Mi xed- Ai r Temper at ur e Requi r ement s
Ver i f y t hat a t her momet er t r aver se of al l uni t out l et s shows var i at i on of not mor e t han 5 per cent of t he di f f er ence, at t he t i me, bet ween t he t emper at ur es of equal quant i t i es of col d and war m ai r st r eams ent er i ng t he unit.
2. 1. 8. 5 Vol ume Cont r ol Requi r ement s
Ver i f y mechani cal const ant - vol ume cont r ol mai nt ai ns desi gn vol ume wi t hi n pl us or mi nus 5 per cent , r egar dl ess of t he modul at i on posi t i on of i nl et val ves or t he f l uct uat i on of i nl et or out l et pr essur e, wi t hi n l i mi t s of i ndi cat ed mi ni mum pr essur e.
2. 1. 8. 6 Sound Level Requi r ement s
When det er mi ni ng equi pment sound- power l evel per f or mance and when no space- at t enuat i on cr i t er i a ar e gi ven, assume 18 dB space at t enuat i on i n al l oct ave bands. Ver i f y manuf act ur er ' s desi gn i ncor por at es sound cor r ect i on f act or s f or equi pment .
Ver i f y t he schedul ed ai r bor ne and r adi at ed sound- power l evel ( PWL) r equi r ement s, t o at t ai n t he speci f i ed NC l evel s. Assume an 18 dB space at t enuat i on i n al l oct ave bands wi t h consi der at i on gi ven t o downst r eam duct const r uct i on and conf i gur at i on i n det er mi ni ng ai r bor ne NC l evel s.
Assume t he f ol l owi ng cei l i ng sound- t r ansmi ssi on l oss ( TL) char act er i st i cs, based on 1- i nch acoust i c l ay- i n panel s and T- bar suspensi on, i n comput i ng r esul t ant space r adi at ed NC l evel s:
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OCTAVE BAND 2ND 3RD 4TH 5TH 6TH 7TH
PWL-TL -2 -4 -9 -10 -13 -15
NC40 i s t he l i mi t i ng f act or .
2. 1. 8. 7 Cont r ol Requi r ement s
Ensur e oper at i ng- cont r ol power sour ce i s dr y, compr essed ai r of i nst r ument qual i t y at 15 psi g, unl ess ot her wi se appr oved.
Pr ovi de f or an ai r mi xi ng val ve oper at or f r om t he aut omat i c t emper at ur e cont r ol manuf act ur er , and i nst al l at i on by t he uni t manuf act ur er , unl ess f i el d i nst al l at i on f or speci f i c const r uct i on i s pr e- appr oved by t he Cont r act i ng Of f i cer . Ensur e oper at or i s cont r ol l ed by a di r ect - act i ng thermostat.
Pr ovi de copper pneumat i c cont r ol t ubi ng br ought t o t he ext er i or of t he casi ng f or connect i on t o aut omat i c t emper at ur e cont r ol syst em.
2. 1. 9 Low- Pr essur e Dual - Duct Mi xi ng Boxes
Pr ovi de manual - damper vol ume cont r ol t ype uni t s. Pr ovi de a cal i br at i on char t wi t h each uni t . Label each uni t wi t h capaci t y mi ni mum/ maxi mum r ange t o f aci l i t at e f i el d adj ust ment .
Ver i f y vol ume cont r ol damper i s ext er nal l y adj ust abl e over an i nl et pr essur e r ange of 0. 05 t o 1- i nch wg.
Ensur e component s subj ect t o f r i c t i on have oi l - i mpr egnat ed br onze bear i ngs, gr aphi t e- i mpr egnat ed nyl on bear i ngs, and l ubr i cant - i mpr egnat ed el ast omer s, cor r osi on- r esi st ant st eel , and si mi l ar mat er i al s.
Ensur e casi ngs ar e f i t t ed wi t h r i gi d, ai r t i ght access panel s, easi l y r emovabl e, and of ampl e s i ze t o gi ve f r ee access t o i nt er i or par t s.
Pr ovi de cl osur e mechani sm whi ch i s achi eved by spr i ng- r et ai ned, quar t er - t ur n, s l ot t ed- cam capt i ve devi ces or s i mi l ar oper at i ng f ast ener s.
Pr ovi de caul k i ng compounds whi ch ar e chl or opr ene, pol yur et hane pol ysul f i des, or s i l i cone el ast omer s. Pr ovi de chl or opr ene, pol yur et hane, or v i nyl gasket s.
2. 1. 9. 1 Casi ng Leakage
Seal al l casi ng j oi nt s t o pr event l eakage of mor e t han 2 per cent of r at ed capaci t y, wi t h al l connect i ons seal ed and wi t h an i nt er nal st at i c pr essur e of 1- i nch wg.
2. 1. 9. 2 I nl et Val ve Leakage
Leakage i n f ul l y c l osed val ve posi t i on i s not t o exceed 2 per cent of uni t r at ed capaci t y agai nst i nl et pr essur e of 1 i nch wg.
2. 1. 9. 3 Mi xed- Ai r Temper at ur e Requi r ement s
Ensur e a t her momet er t r aver se of al l uni t out l et s shows var i at i on of not mor e t han 5 per cent of t he di f f er ence, at t he t i me, bet ween t he t emper at ur es of equal quant i t i es of col d and war m ai r st r eams ent er i ng t he
Apr i l 2019 Page 20 SECTI ON 23 36 00. 00 40 unit.
2. 1. 9. 4 Sound Level Requi r ement s
When det er mi ni ng equi pment sound power l evel per f or mance when no space- at t enuat i on cr i t er i a ar e gi ven, assume 18 dB space at t enuat i on i n al l oct ave bands. Ver i f y manuf act ur er desi gns i ncor por at es sound cor r ect i on f act or s f or equi pment .
2. 1. 9. 5 Cont r ol Requi r ement s
Ensur e oper at i ng- cont r ol power sour ce i s dr y, compr essed ai r of i nst r ument qual i t y at 15 psi g, unl ess ot her wi se appr oved.
Pr ovi de an ai r mi xi ng val ve oper at or f r om t he aut omat i c t emper at ur e cont r ol manuf act ur er and i nst al l usi ng t he uni t manuf act ur er , unl ess f i el d i nst al l at i on f or speci f i c const r uct i on i s pr e- appr oved by t he Cont r act i ng Of f i cer . Ensur e oper at or i s cont r ol l ed by a di r ect - act i ng t her most at .
Pr ovi de copper pneumat i c cont r ol t ubi ng br ought t o t he ext er i or of t he casi ng f or connect i on t o t he aut omat i c t emper at ur e cont r ol syst em.
PART 3 EXECUTI ON
3. 1 INSTALLATION
I nst al l ai r t er mi nal uni t s l evel and pl umb, and i n accor dance wi t h NFPA 90A.
Mai nt ai n suf f i c i ent c l ear ance f or nor mal ser vi ce and mai nt enance.
3. 1. 1 Identification
Label each ai r t er mi nal uni t wi t h pl an number , nomi nal ai r f l ow, maxi mum and mi ni mum f act or y- set ai r f l ows, coi l t ype, and ARI cer t i f i cat i on seal .
3. 1. 2 Connections
Coor di nat e pi pi ng i nst al l at i ons and speci al t y ar r angement s wi t h schemat i cs on Dr awi…
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