Ti nker AFB, OK TAFB Techni cal Spr ci f i cat i ons 2019

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AI R COI LS

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- CONDI TI ONI NG, HEATI NG AND REFRI GERATI ON I NSTI TUTE ( AHRI )

AHRI 410 ( 2001; Addendum 1 2002; Addendum 2 2005;

Addendum 3 2011) For ced- Ci r cul at i on Ai r - Cool i ng and Ai r - Heat i ng Coi l s

ASTM I NTERNATI ONAL ( ASTM)

ASTM A653/ A653M ( 2015) 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

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 . 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 d of Exi st i ng Condi t i ons

SD- 02 Shop Dr awi ngs

Fabr i cat i on Dr awi ngs; G

Connect i on Di agr ams; G

Cont r ol s Layout ; G

I nt er nal Tubi ng and Wi r i ng; G

I nst al l at i on Dr awi ngs; G

SD- 03 Pr oduct Dat a

St eam Heat i ng; G

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Hot - Wat er Heat i ng; G

Chi l l ed- Wat er Cool i ng; G

Vol at i l e Ref r i ger ant Cool i ng; G

SD- 05 Desi gn Dat a

Desi gn Anal ysi s and Cal cul at i ons

SD- 06 Test Repor t s

Fi nal Test Repor t s

SD- 07 Cer t i f i cat es

Cer t i f i cat es of Conf or mance

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. 3 QUALI TY CONTROL

Submi t a r ecor d of exi st i ng condi t i ons consi st i ng of t he r esul t s of a 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.

Pr ovi de coi l s t hat bear t he ARI cer t i f i cat i on seal i ndi cat i ng compl i ance with AHRI 410. Submi t Cer t i f i cat es of Conf or mance f or f ol l owi ng i t ems showi ng conf or mance wi t h AHRI 410:

a. Coi l

b. Coi l casi ngs

c. Coi l header s

d. Coi l t ubi ng

e. Coi l c i r cui t i ng

I ndi cat e t he gener al physi cal cont r ol s l ayout , and i nt er nal t ubi ng and wi r i ng det ai l s on t he dr awi ngs. Submi t desi gn anal ysi s and cal cul at i ons f or coi l s.

PART 2 PRODUCTS

2. 1 SYSTEM DESCRI PTI ON

Submi t manuf act ur er ' s cat al og dat a f or t he f ol l owi ng coi l t ypes i ndi cat i ng, when appl i cabl e, coi l pr essur e and t emper at ur e r at i ngs, coi l casi ngs, header s, t ubi ng, c i r cui t i ng, and dr ai nabl e coi l s.

a. St eam heat i ng

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b. Hot - wat er heat i ng

c. Chi l l ed- wat er cool i ng

d. Vol at i l e r ef r i ger ant cool i ng

Submi t f abr i cat i on dr awi ngs f or coi l uni t s consi st i ng of f abr i cat i on and assembl y det ai l s t o be per f or med i n t he f act or y. I ncl ude connect i on di agr ams i ndi cat i ng t he r el at i ons and connect i ons of t he f ol l owi ng i t ems:

a. Coi l

b. Coi l casi ngs

c. Coi l header s

d. Coi l t ubi ng

e. Coi l c i r cui t i ng

2. 1. 1 Coi l Pr essur e and Temper at ur e Rat i ngs

Pr ovi de coi l s desi gned f or t he f ol l owi ng f l ui d oper at i ng pr essur es and temperatures:

Service Pressure (psi)

Temperature ( Degr ees F)

St eam - l ow pr essur e 25 267

St eam - hi gh pr essur e 150 366

St eam - super heat ed 350 500

Hot wat er 200 250

Chi l l ed wat er 200 45

Vol at i l e r ef r i ger ant 200 300

Ai r - pr essur e t est coi l s under wat er at t he f ol l owi ng mi ni mum pr essur es:

Service Pressure (psi)

Steam 250

Hot wat er 250

Chi l l ed wat er 250

Vol at i l e r ef r i ger ant 400

2. 2 COMPONENTS

2. 2. 1 Coi l Casi ngs

Pr ovi de coi l casi ngs t hat ar e mi l l - gal vani zed, 16- gage, mi ni mum. Ensur e sheet met al has not l ess t han 1. 25- ounces of z i nc per squar e f oot of t wo- si ded met al sur f ace conf or mi ng t o ASTM A653/ A653M. Pr ovi de a casi ng f l anged on f our s i des f or bol t ed assembl y, except as ot her wi se speci f i ed.

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Wher e coi l s ar e st acked, pr ovi de a doubl e- bend const r uct i on casi ng.

Pr ovi de duct - mount ed r eheat coi l casi ngs not over 36- i nches i n l engt h, f abr i cat ed f r om a mi ni mum 20- gage gal vani zed st eel conf or mi ng t o above speci f i ed r equi r ement s. Pr ovi de casi ngs t hat ar e f l anged or sui t abl e f or dr i ve- sl i p assembl y.

Pr ovi de coi l mount i ng wi t hi n t he housi ng t hat i s ei t her f i xed or s l i de- out t ype, except as ot her wi se speci f i ed. Pr ovi de sl i de- out t ype coi l s f or cei l i ng- suspended package uni t s, and f or ot her package uni t s whose capaci t y exceeds 15, 000 cubi c- f eet per mi nut e.

2. 2. 2 Coi l Header s

Pr ovi de coi l header s of cast i r on, br ass, copper , or al umi num cast i ng, as i ndi cat ed i n cont r act dr awi ngs. .

Pr ovi de di r ect expansi on, vol at i l e r ef r i ger ant coi l s t hat have copper or br ass header s wi t h necessar y cont r ol connect i ons.

Fi t st eam and wat er coi l header s wi t h 1/ 4- i nch i r on pi pe si ze( i ps) spr i ng- l oaded pl ug dr ai ns and vent pet cocks. Pr ovi de aut omat i c vent s wher e i ndi cat ed.

2. 2. 3 Coi l Tubi ng

I nst al l coi l s const r uct ed of copper t ubi ng wi t h al umi num or copper f i ns.

Pr ovi de hel i cal coi l f i ns t hat ar e wound t i ght t o t he t ubes and sol der - coat ed. Pr ovi de pl at e f i ns t hat have spacer col l ar s i n met al l i c cont act wi t h t he adj acent f i n. Ensur e f i ns ar e mechani cal l y bonded t o t he t ube. Ensur e bar e t ube sur f ace i s not v i s i bl e wi t hi n t he f i nned por t i on of t he coi l .

Pr ovi de sol der - coat ed cool i ng coi l s of hel i cal wound copper desi gn.

For coi l t ubes i n wat er or vol at i l e r ef r i ger ant ser vi ce, pr ovi de t ubes t hat ar e par al l el . Ensur e coi l t ubes have suf f i c i ent i nt er medi at e f ul l coi l dept h suppor t s t o pr event saggi ng of unsuppor t ed span due t o:

wor ki ng f l ui d pr essur es, t emper at ur es, and summer and wi nt er coi l - ambi ent condi t i ons. Saggi ng i s unaccept abl e i f t ube cent er l i ne i s di spl aced by mor e t han 3/ 16- i nch f r om cent er l i ne of t ube connect i on at out l et header when coi l s ar e mor e t han t wo r ows deep and when i nst al l ed i n accor dance wi t h t he manuf act ur er ' s i nst r uct i ons. Make adequat e pr ovi s i on f or expansi on and cont r act i on t hat pr ecl udes saggi ng and di st or t i on under t her mal l oads appl i ed i n i ndi cat ed or speci f i ed ser vi ce. Sl ope t ubes t o be f r ee dr ai ni ng.

Pr ovi de maxi mum heat i ng- coi l f ace t ube spaci ng of 3- i nches on cent er f or 1- i nch out si de- di amet er ( od) t ubes, 2- i nches f or 3/ 4- i nch od t ubes, and 1- 1/ 2- i nches f or 5/ 8- i nch od t ubes.

Pr ovi de coi l f ace t ube spaci ng f or cool i ng coi l s and f or hel i cal l y wound heat i ng coi l s i mmedi at el y f ol l owed by wat er - cool i ng coi l s t hat do not exceed 1- 1/ 2- i nches on cent er .

Ensur e t ubes ar e st r ai ght , wi t h t ur ns made t hr ough header s or r et ur n U- bends, wi t h br azed connect i ons and j oi nt s, except as ot her wi se speci f i ed.

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Ensur e coi l t ube mat er i al i s seaml ess deoxi di zed copper .

Ensur e coi l t ube mat er i al i s seaml ess 90- 10 copper - ni ckel wi t h 0. 035- i nch wal l t hi ckness f or super heat ed- st eam ser vi ce t o 350- pounds per squar e i nch ( psi ) at 500 degr ees F.

Pr ovi de r aw coi l t ube st ock wal l wi t h a mi ni mum t hi ckness of 0. 025- i nch.

Pr ovi de r aw coi l t ube st ock wal l wi t h a mi ni mum t hi ckness of 0. 035- i nch.

Wher e mechani cal i nser t devi ces ar e used t o i ncr ease l i qui d t ur bul ence wi t hi n t ubes, i ncr ease t he wal l t hi ckness of t hese t ubes by 0. 010- i nch over t he mi ni mum r aw coi l t ube st ock speci f i ed f or t he ser vi ce.

Pr ovi de mi ni mum t ube out si de di amet er of 1/ 2- i nch.

2. 2. 4 Coi l Ci r cui t i ng

Pr ovi de one of of t he f ol l owi ng conf i gur at i ons, and i ndi cat ed i n t he cont r act dr awi ngs:

a. Pr ovi de st andar d or f ul l - c i r cui t ed wat er coi l s t hat have as many f ul l - l engt h t ubes i n each ci r cui t as t he number of t ubes i n t he dept h of t he coi l f ace.

b. Pr ovi de doubl e- ci r cui t wat er coi l s t hat have t wi ce as many t ubes as st andar d coi l s.

c. Pr ovi de hal f - c i r cui t wat er coi l s t hat have hal f as many t ubes as st andar d coi l s and t o t he next l ar ger whol e number wher e odd number s ar e i nvol ved.

Pr ovi de count er f l ow t ype coi l s when mor e t han t wo r ows deep, except t hat i n t he case of doubl e- or hal f - c i r cui t coi l s, r easonabl e devi at i on f r om count er f l ow ar r angement i s per mi t t ed, pr ovi ded t he pr essur e dr op and capaci t y r equi r ement s ar e met .

2. 2. 5 Dr ai nabl e Coi l s

Pr ovi de dr ai nabl e coi l s t hat ar e capabl e of bei ng pur ged f r ee of wat er wi t h compr essed ai r .

Pr ovi de sel f - dr ai ni ng coi l s wi t h a dr ai n poi nt at t he end of ever y t ube and sl oped t o t hat poi nt . Pr ovi de dr ai n pr ovi s i ons t hat i ncl ude: dr ai ned header s, U- bends wi t h i nt egr al pl ugs; or nonf er r ous pl ugs i n cast - i r on header s. Pr ovi de t ubes t hat dr ai n subst ant i al l y dr y by gr avi t y al one when dr ai ns and vent s ar e open.

Wher e necessar y, f i l l t he coi l wi t h wat er t o t he end of t he manuf act ur er ' s header connect i ons and check dr ai nage vol ume agai nst t he manuf act ur er ' s data.

2. 2. 6 Coi l Types

2. 2. 6. 1 St eam Heat i ng

For Type SA, pr ovi de st eam di st r i but i ng, t ube- i n- t ube wi t h mul t i pl e- or i f i ce di st r i but or s. Pr ovi de a t ube wi t h a mi ni mum out si de- di amet er of 1- i nch wher ever coi l i s exposed t o ai r st r eam at

Apr i l 2019 Page 5 SECTI ON 23 82 16. 00 40 f r eezi ng t emper at ur es. For al l ot her appl i cat i ons, pr ovi de a mi ni mum out si de- di amet er of 5/ 8- i nch. Pr ovi de t ubes t hat ar e s l oped 1/ 8- i nch per f oot , and coi l casi ng t hat i s l evel . Pr ovi de coi l wi t h i nl et and out l et connect i ons on t he same si de.

For Type SB, pr ovi de t ube- i n- t ube t ype, f or r eheat ser vi ce, wi t h modul at i ng cont r ol . When l ocat ed i n duct wor k over 6- f eet i n t ot al wi dt h, pr ovi de ei t her t wo separ at e coi l s or one coi l wi t h suppl y t o bot h ends and a s i ngl e r et ur n. Pr ovi de coi l wi t h i nl et and out l et connect i ons on t he same end and on opposi t e s i des of t he t wo- coi l assembl y.

For Type SC, pr ovi de si ngl e r ow, s i ngl e c i r cui t , f or r eheat ser vi ce wi t h t wo- posi t i on cont r ol .

For Type SD, pr ovi de i nt egr al damper f ace and bypass t ype. Pr ovi de coi l t hat i ncl udes f i nned el ement s wi t h header s. Ensur e r et ur n bends ar e pi t ched wi t hi n t he casi ng; and bypasses wi t h i nt er l ocked damper s ar e cont r ol l ed by a damper mot or and ai r st r eam t her most at s.

Pr ovi de a maxi mum f i n spaci ng of 10 per l i near i nch. Pr ovi de t ubes t hat ar e connect ed t o suppl y and r et ur n header s by mechani cal j oi nt s and ar e secur ed agai nst v i br at i on by a channel t hat per mi t s expansi on and cont r act i on. Pr ovi de 16- gage col d- r ol l ed st eel damper bl ades. Pr ovi de gr aphi t e- i mpr egnat ed nyl on damper r od bear i ngs. Pr ovi de oi l - i mpr egnat ed br onze l i nkage bear i ngs. Pr opor t i on ai r such t hat t he aver age t emper at ur e at any poi nt i n a pl ane par al l el t o t he coi l f ace, 3- f eet downst r eam of t he l eavi ng si de, does not var y mor e t han 5 degr ees F f r om t he t her most at set t i ng. Var y pr essur e- dr op of ai r passi ng t hr ough t he coi l no mor e t han pl us or mi nus 5 per cent , r egar dl ess of t he posi t i on of t he i nt er nal dampers.

2. 2. 6. 2 Hot - Wat er Heat i ng

For Type HA, pr ovi de cont i nuous ci r cui t t ype, l i mi t ed t o t wo r ows dept h.

For Type HB, pr ovi de dr ai nabl e count er f l ow t ype, wi t h mor e t han t wo r ows.

2. 2. 6. 3 Chi l l ed- Wat er Cool i ng

For Type CA, pr ovi de cont i nuous ci r cui t , dr ai nabl e t ype, l i mi t ed t o t wo r ows dept h.

For Type CB, pr ovi de sel f - dr ai ni ng, count er f l ow t ype.

For Type CC, pr ovi de sel f - dr ai ni ng, c l eanabl e, count er f l ow t ype. Pr ovi de st r ai ght - t hr ough t ype t ubes, r ol l ed or br azed i nt o st eel t ube sheet s.

Encl ose header s wi t h gasket ed and bol t ed r emovabl e cover pl at es t o pr ovi de access t o t ube i nt er nal s f r om ei t her one end or bot h ends of coi l .

2. 2. 6. 4 Vol at i l e Ref r i ger ant Cool i ng

For Type DX, pr ovi de count er f l ow t ype, desi gned f or use wi t h r ef r i ger ant speci f i ed, wi t h equal l engt h c i r cui t i ng ar r angement . Pr ovi de t he number of di st r i but or s t hat sui t i ndi cat ed r ef r i ger ant and t hat el i mi nat e t r appi ng of r ef r i ger ant and oi l . Obt ai n coi l capaci t y wi t h an expansi on val ve set f or not l ess t han 8 degr ees F of super heat . Pr ovi de a r ef r i ger ant di st r i but or t hat i s f ur ni shed and i nst al l ed by t he coi l manuf act ur er . Pr ovi de a t ube out si de di amet er t hat i s ei t her 5/ 8- i nch or 3/4-inch.

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Pr ovi de r ef r i ger ant di st r i but or t hat i s sui t abl e f or t he t her most at i c expansi on val ve r ecommended by t he manuf act ur er f or t he ser vi ce and capaci t y speci f i ed or i ndi cat ed. Ensur e ar r angement i s capabl e of st abl e oper at i on down t o 40 per cent or l ess of desi gn capaci t y.

Pr ovi de r ef r i ger ant di st r i but or sui t abl e f or use wi t h a bal anced, doubl e- por t ed t her most at i c expansi on val ve or wi t h a pi l ot - oper at ed val ve wher e i ndi cat ed. Ensur e ar r angement i s capabl e of st abl e oper at i on down t o 15 per cent of desi gn capaci t y.

PART 3 EXECUTI ON

3. 1 INSTALLATION

I nst al l coi l s i n accor dance wi t h t he manuf act ur er ' s r ecommendat i ons.

Submi t i nst al l at i on dr awi ngs f or coi l syst ems. I ndi cat e over al l physi cal f eat ur es, di mensi ons, r at i ngs, ser vi ce r equi r ement s, equi pment wei ght s and l ayout and ar r angement det ai l s of equi pment r oom on dr awi ngs.

3. 2 FI ELD QUALI TY CONTROL

For dr ai nabl e coi l s:

a. Fi el d check coi l pi t ch and l evel i ng f or dr ai nabi l i t y i n t he pr esence of t he Cont r act i ng Of f i cer .

b. Per f or m pr essur e t est s and dehydr at e coi l s.

c. Per f or m vacuum t est s, pur ge wi t h i ner t gas, and seal coi l 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 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

3. 3. 1 Oper at i on and Mai nt enance

Submi t 6 _____ copi es of t he oper at i on and mai nt enance manual s 30 cal endar days pr i or t o t est i ng t he coi l syst ems. Updat e and r esubmi t dat a f or f i nal appr oval no l at er t han 30 cal endar days pr i or t o cont r act compl et i on.

3. 3. 2 Recor d Dr awi ngs

Submi t r ecor d dr awi ngs f or coi l syst ems pr ovi di ng cur r ent f act ual i nf or mat i on i ncl udi ng devi at i ons f r om, and amendment s t o, t he dr awi ngs and conceal ed and vi s i bl e changes i n t he wor k.

- - End of Sect i on - -

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