23 01 30.41.pdf

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

SECTI ON 23 01 30. 41

HVAC SYSTEM CLEANI NG

04/17

PART 1 GENERAL

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 HEATI NG, REFRI GERATI NG AND AI R- CONDI TI ONI NG

ENGI NEERS ( ASHRAE)

ASHRAE 62. 1 ( 2013) Vent i l at i on f or Accept abl e I ndoor Ai r Qual i t y

NATI ONAL AI R DUCT CLEANERS ASSOCI ATI ON ( NADCA)

ACR ( 2013) St andar d f or Assessment , Cl eani ng, and Rest or at i on of HVAC Syst ems

NADCA HVAC I nspect i on Manual ( 2005) Pr ocedur es f or Assessi ng t he Cl eanl i ness of Commer ci al HVAC Syst ems

NORTH AMERI CAN I NSULATI ON MANUFACTURERS ASSOCI ATI ON ( NAI MA)

NAI MA AH112 ( 1993) Cl eani ng Fi br ous Gl ass or Li ned Sheet Met al Duct s

NAI MA AH122 ( 2006) Cl eani ng Fi br ous I nsul at ed Duct Syst ems - Recommended Pr act i ces

NAI MA AH127 ( 1999) I mpact of Duct Cl eani ng on I nt er nal Duct I nsul at i on

SHEET METAL AND AI R CONDI TI ONI NG CONTRACTORS' NATI ONAL ASSOCI ATI ON

(SMACNA)

SMACNA 1966 ( 2005) HVAC Duct Const r uct i on St andar ds Met al and Fl exi bl e, 3r d Edi t i on

U. S. ARMY CORPS OF ENGI NEERS ( USACE)

EM 385- 1- 1 ( 2014) Saf et y and Heal t h Requi r ement s Manual

U. S. ENVI RONMENTAL PROTECTI ON AGENCY ( EPA)

EPA 402- C- 01- 001 ( 2001) I AQ Bui l di ng Educat i on and Assessment Tool ( I - BEAM)

EPA 402- F- 91- 102 ( 1991) Bui l di ng Ai r Qual i t y: A Gui de f or Bui l di ng Owner s and Faci l i t y Manager s

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UNDERWRI TERS LABORATORI ES ( UL)

UL 181 ( 2013) Fact or y- Made Ai r Duct s and Ai r Connectors

UL 181A ( 2013) St andar d f or Cl osur e Syst ems f or Use wi t h Ri gi d Ai r Duct s and Ai r Connect or s

UL 181B ( 2013) St andar d f or Cl osur e Syst ems f or Use wi t h Fl exi bl e Ai r Duct s and Ai r Connectors

1. 2 DEFINITIONS

1. 2. 1 NADCA St andar ds

Per f or m t he ser vi ces speci f i ed her e i n accor dance wi t h t he cur r ent publ i shed st andar ds of t he Nat i onal Ai r Duct Cl eaner s Associ at i on ( ACR and NADCA HVAC I nspect i on Manual ).

a. Al l t er ms i n t hi s speci f i cat i on ar e def i ned as st at ed i n t he NADCA Standards.

b. Fol l ow NADCA St andar ds wi t hout modi f i cat i on or devi at i on.

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 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 d of Exi st i ng Condi t i ons; G

Coor di nat i on Pl an; G

NADCA Fi r m; G

NADCA Team Assi st ant s; G

NADCA Ai r Syst em Cl eani ng Speci al i st ( ASCS) ; G

NADCA Super vi sor Qual i f i cat i ons; G

Recor ds of Exper i ence i n t he Fi el d of HVAC Syst em Cl eani ng; G

NADCA Wor k Execut i on Schedul e; G

SD- 03 Pr oduct Dat a

Mat er i al Saf et y Dat a Sheet s ( MSDS) ; G

SD- 06 Test Repor t s

Test i ng Pr ocedur es Summar y; G

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Gr avi met r i c Anal ysi s; G

Post - Pr oj ect Repor t ; G

1. 4 QUALI TY CONTROL

1. 4. 1 NADCA Fi r m

Submi t i nf or mat i on cer t i f y i ng t hat t he NADCA f i r m i s a f i r st t i er subcont r act or who i s not af f i l i at ed wi t h any ot her company par t i c i pat i ng i n wor k on t hi s cont r act , i ncl udi ng f ur ni shi ng equi pment . Fur t her , submi t t he f ol l owi ng, f or t he f i r m, t o Cont r act i ng Of f i cer f or appr oval :

a. I ndependent NADCA f i r m:

NADCA Fi r m: NADCA r egi st r at i on number and expi r at i on dat e of cur r ent certification;

NADCA Super vi sor Qual i f i cat i ons: Name and copy of NADCA super vi sor cer t i f i cat e and expi r at i on dat e of cur r ent cer t i f i cat i on.

NADCA Ai r Syst em Cl eani ng Speci al i st ( ASCS) : Name and document ed evi dence t hat t he t eam f i el d l eader has sat i sf act or i l y per f or med f ul l - t i me super vi s i on of HVAC cl eani ng wor k i n t he f i el d f or not l ess t han 3 year s i mmedi at el y pr ecedi ng t hi s cont r act ' s bi d openi ng dat e.

NADCA Team Assi st ant s: Names and document ed evi dence t hat each f i el d t echni c i an has sat i sf act or i l y assi st ed a NADCA t eam f i el d l eader i n per f or mance of HVAC cl eani ng wor k i n t he f i el d f or not l ess t han one year i mmedi at el y pr ecedi ng t hi s cont r act ' s bi d openi ng dat e.

Cur r ent Cer t i f i cat es: Ensur e r egi st r at i ons and cer t i f i cat i ons ar e cur r ent , and val i d f or t he dur at i on of t hi s cont r act . Renew Cer t i f i cat i ons whi ch expi r e pr i or t o compl et i on of t he HVAC cl eani ng wor k, i n a t i mel y manner so t hat t her e i s no l apse i n r egi st r at i on or cer t i f i cat i on. NADCA agency or NADCA t eam per sonnel wi t hout a cur r ent r egi st r at i on or cur r ent cer t i f i cat i on ar e not t o per f or m HVAC cl eani ng wor k on t hi s cont r act .

b. TAB Team Member s: NADCA t eam appr oved t o accompl i sh wor k on t hi s cont r act ar e f ul l - t i me empl oyees of t he NADCA f i r m. No ot her per sonnel i s al l owed t o do HVAC cl eani ng wor k on t hi s cont r act .

c. Repl acement of NADCA Team Member s: Repl acement of member s may occur i f each new member compl i es wi t h t he appl i cabl e per sonnel qual i f i cat i ons and each i s appr oved by t he Cont r act i ng Of f i cer .

1. 4. 2 Experience

Submi t r ecor ds of exper i ence i n t he f i el d of HVAC syst em cl eani ng. Bi ds wi l l onl y be consi der ed f r om f i r ms whi ch ar e r egul ar l y engaged i n HVAC syst em mai nt enance wi t h an emphasi s on HVAC syst em cl eani ng and decontamination.

1. 4. 3 Equi pment , Mat er i al s and Labor

Possess and f ur ni sh al l necessar y equi pment , mat er i al s and l abor t o adequat el y per f or m t he speci f i ed ser vi ces and compl y wi t h t he appl i cabl e

Apr i l 2019 Page 3 SECTI ON 23 01 30. 41 pr ovi s i ons of NADCA Gener al Speci f i cat i ons f or t he Cl eani ng of Commer ci al HVAC Syst ems and ASHRAE 62. 1.

a. Assur e t hat al l empl oyees have r ecei ved saf et y equi pment t r ai ni ng, medi cal sur vei l l ance pr ogr ams, i ndi v i dual heal t h pr ot ect i on measur es, and manuf act ur er ' s pr oduct and Mat er i al Saf et y Dat a Sheet s ( MSDS) as r equi r ed f or t he wor k by t he U. S. Occupat i onal Saf et y and Heal t h Admi ni st r at i on, and as descr i bed by t hi s speci f i cat i on. For wor k per f or med i n count r i es out si de of t he U. S. A. , compl y wi t h appl i cabl e nat i onal saf et y codes and st andar ds.

b. Mai nt ai n a copy of al l cur r ent MSDS document at i on and saf et y cer t i f i cat i ons at t he s i t e at al l t i mes, as wel l as compl y wi t h al l ot her s i t e document at i on r equi r ement s of appl i cabl e OSHA pr ogr ams and t hi s speci f i cat i on.

c. Submi t al l Mat er i al Saf et y Dat a Sheet s ( MSDS) f or al l chemi cal pr oduct s pr oposed used i n t he c l eani ng pr ocess, i ncl udi ng al l VOC ratings.

1. 4. 4 Heal t h And Saf et y

1. 4. 4. 1 Saf et y St andar ds

Compl y wi t h al l appl i cabl e Feder al , St at e, and l ocal r equi r ement s f or pr ot ect i ng t he saf et y of t he cont r act or s ' empl oyees, bui l di ng occupant s, and t he envi r onment . I n par t i cul ar , f ol l ow al l appl i cabl e st andar ds of t he Occupat i onal Saf et y and Heal t h Admi ni st r at i on ( OSHA) when wor ki ng i n accor dance wi t h t hi s speci f i cat i on, and EM 385- 1- 1.

1. 4. 4. 2 Occupant Saf et y

Empl oy no pr ocesses or mat er i al s i n such a manner t hat i nt r oduce addi t i onal hazar ds i nt o occupi ed spaces.

1. 4. 4. 3 Di sposal of Debr i s

Di spose of al l debr i s r emoved f r om t he HVAC Syst em i n accor dance wi t h appl i cabl e Feder al , St at e and l ocal r equi r ement s.

1. 5 PROJECT/ SI TE CONDI TI ONS

1. 5. 1 Mechani cal Dr awi ngs

Obt ai n one copy of t he f ol l owi ng document s:

a. Pr oj ect dr awi ngs and speci f i cat i ons

b. Appr oved const r uct i on r evi s i ons per t ai ni ng t o t he HVAC syst em

c. Any exi st i ng i ndoor ai r qual i t y ( I AQ) assessment s or envi r onment al r epor t s pr epar ed f or t he f aci l i t y .

Submi t a NADCA Wor k Execut i on Schedul e t o t he Cont r act i ng Of f i cer wi t hi n 10 wor ki ng days of t he cont r act awar d.

1. 5. 2 Si t e Condi t i ons

The HVAC syst em i ncl udes any i nt er i or sur f ace of t he f aci l i t y ' s ai r

Apr i l 2019 Page 4 SECTI ON 23 01 30. 41 di st r i but i on syst em f or condi t i oned spaces and/ or occupi ed zones. Thi s i ncl udes t he ent i r e heat i ng, ai r - condi t i oni ng and vent i l at i on syst em f r om t he poi nt s wher e t he ai r ent er s t he syst em t o t he poi nt s wher e t he ai r i s di schar ged f r om t he syst em. The r et ur n ai r gr i l l es, r et ur n ai r duct s ( except cei l i ng pl enums and mechani cal r oom) t o t he ai r handl i ng uni t ( AHU) , t he i nt er i or sur f aces of t he AHU, mi xi ng box, coi l compar t ment , condensat e dr ai n pans, humi di f i er s and dehumi di f i er s, suppl y ai r duct s, f ans, f an housi ng, f an bl ades, ai r wash syst ems, spr ay el i mi nat or s, t ur ni ng vanes, f i l t er s, f i l t er housi ngs, r eheat coi l s, and suppl y di f f user s ar e al l consi der ed par t of t he HVAC syst em. The HVAC syst em may al so i ncl ude ot her component s such as dedi cat ed exhaust and vent i l at i on component s and make- up ai r syst ems.

PART 2 PRODUCTS

Not Used

PART 3 EXECUTI ON

Per f or m t he ser vi ces speci f i ed her e i n accor dance wi t h t he cur r ent publ i shed st andar ds of t he Nat i onal Ai r Duct Cl eaner s Associ at i on ( ACR and NADCA HVAC I nspect i on Manual ).

a. Al l t er ms i n t hi s speci f i cat i on have t hei r meani ng def i ned as st at ed i n t he NADCA St andar ds.

b. Fol l ow NADCA St andar ds wi t h no modi f i cat i ons or devi at i ons bei ng al l owed. Remove vi s i bl e sur f ace cont ami nant s and deposi t s f r om wi t hi n t he HVAC syst em i n st r i ct accor dance wi t h t hese speci f i cat i ons.

3. 1 PREPARATION

3. 1. 1 HVAC Syst em I nspect i ons And Si t e Pr epar at i ons

3. 1. 1. 1 HVAC Syst em Eval uat i on

Pr i or t o t he commencement of any c l eani ng wor k, per f or m a vi sual i nspect i on of t he HVAC syst em i n t he pr esence of t he Cont r act i ng Of f i cer t o det er mi ne appr opr i at e met hods, t ool s, and equi pment r equi r ed t o sat i sf act or i l y compl et e t hi s pr oj ect . Not i f y t he Cont r act i ng Of f i cer 10 days pr i or t o t he pl anned i nspect i on.

Document damaged syst em component s f ound dur i ng t he i nspect i on and submi t t o t he Cont r act i ng Of f i cer , c l ear l y l abel ed " Recor d of Exi st i ng Condi t i ons. "

3. 1. 1. 2 Si t e Eval uat i on and Pr epar at i ons

Conduct a s i t e eval uat i on, and est abl i sh a speci f i c , coor di nat i on pl an whi ch det ai l s how each ar ea of t he bui l di ng i s pr ot ect ed dur i ng t he var i ous phases of t he pr oj ect .

3. 2 APPLICATION

3. 2. 1 Gener al HVAC Syst em Cl eani ng Requi r ement s

3. 2. 1. 1 Containment

Col l ect debr i s r emoved dur i ng c l eani ng and t ake pr ecaut i ons t o ensur e t hat debr i s i s not ot her wi se di sper sed out si de t he HVAC syst em dur i ng t he

Apr i l 2019 Page 5 SECTI ON 23 01 30. 41 cl eani ng pr ocess.

3. 2. 1. 2 Par t i cul at e Col l ect i on

Wher e t he Par t i cul at e Col l ect i on Equi pment ( PCE) i s exhaust i ng i nsi de t he bui l di ng, use HEPA f i l t r at i on wi t h 99. 97 per cent col l ect i on ef f i c i ency f or

0. 3- mi cr on si ze ( or gr eat er ) . When t he PCE i s exhaust i ng out si de t he bui l di ng, under t ake mechani cal c l eani ng oper at i ons onl y wi t h PCE, i ncl udi ng adequat e f i l t r at i on t o cont ai n debr i s r emoved f r om t he HVAC syst em. When t he PCE i s exhaust i ng out si de t he bui l di ng, t ake pr ecaut i ons t o l ocat e t he equi pment down wi nd and away f r om al l ai r i nt akes and ot her poi nt s of ent r y i nt o t he bui l di ng.

3. 2. 1. 3 Cont r ol l i ng Odor s

Take al l r easonabl e measur es t o cont r ol of f ensi ve odor s and/ or mi st vapor s dur i ng t he cl eani ng pr ocess.

3. 2. 1. 4 Component Cl eani ng

Empl oy c l eani ng met hods such t hat al l HVAC syst em component s ar e Vi s i bl y Cl ean as def i ned i n appl i cabl e st andar ds. Upon compl et i on, r et ur n al l component s t o t hose set t i ngs r ecor ded j ust pr i or t o c l eani ng oper at i ons.

3. 2. 1. 5 Ai r - Vol ume Cont r ol Devi ces

Mar k t he posi t i on of damper s and any ai r - di r ect i onal mechani cal devi ces i nsi de t he HVAC syst em pr i or t o c l eani ng and, upon compl et i on, r est or e t o t hei r mar ked posi t i on.

3. 2. 1. 6 Ser vi ce Openi ngs

Ut i l i ze ser vi ce openi ngs, as r equi r ed f or pr oper c l eani ng, at var i ous poi nt s of t he HVAC syst em f or physi cal and mechani cal ent r y, and i nspect i on. Ut i l i ze t he exi st i ng ser vi ce openi ngs al r eady i nst al l ed i n t he HVAC syst em wher e possi bl e.

Cr eat e ot her openi ngs wher e needed, cr eat ed and r eseal ed i n conf or mance wi t h NADCA St andar d 05. Pl ace cl osur es so t hey do not s i gni f i cant l y hi nder , r est r i ct , al t er t he ai r - f l ow wi t hi n t he syst em, or compr omi se t he st r uct ur al i nt egr i t y of t he syst em. Pr oper l y i nsul at e c l osur es t o pr event heat l oss/ gai n or condensat i on on sur f aces wi t hi n t he syst em. Conf or m const r uct i on t echni ques used i n t he cr eat i on of openi ngs t o r equi r ement s of appl i cabl e bui l di ng and f i r e codes, and appl i cabl e NFPA, SMACNA and NADCA St andar ds. Cut t i ng ser vi ce openi ngs i nt o f l exi bl e duct i s not per mi t t ed. Di sconnect f l exi bl e duct at t he ends as needed f or pr oper c l eani ng and i nspect i on.

Reseal r i gi d f i ber gl ass duct boar d duct syst ems i n accor dance wi t h NAI MA r ecommended pr act i ces; NAI MA AH112, NAI MA AH122, and NAI MA AH127. Onl y c l osur e t echni ques whi ch compl y wi t h UL 181, UL 181A, or UL 181B ar e sui t abl e f or f i ber gl ass duct syst em cl osur es.

Cl ear l y mar k al l ser vi ce openi ngs, capabl e of bei ng r e- opened f or f ut ur e i nspect i on or r emedi at i on, and r epor t t hei r l ocat i on i n pr oj ect r epor t documents.

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3. 2. 1. 7 Cei l i ng Sect i ons ( Ti l e)

Car ef ul l y r emove and r ei nst al l cei l i ng sect i ons t o gai n access t o HVAC syst ems dur i ng t he cl eani ng pr ocess. Repl ace any damaged cei l i ng sect i ons caused by t he r emoval at no cost t o t he Gover nment .

3. 2. 1. 8 Ai r Di st r i but i on Devi ces ( Regi st er s, Gr i l l es and Di f f user s)

Cl ean al l ai r di st r i but i on devi ces.

3. 2. 1. 9 Ai r Handl i ng Uni t s, Ter mi nal Uni t s, Bl ower s and Exhaust Fans

Ensur e t hat suppl y, r et ur n, and exhaust f ans and bl ower s ar e t hor oughl y c l eaned. Ar eas f or c l eani ng i ncl ude bl ower s, f an housi ngs, pl enums ( except cei l i ng suppl y and r et ur n pl enums) , scr ol l s, bl ades, or vanes, shaf t s, baf f l es, damper s and dr i ve assembl i es. Remove al l v i s i bl e sur f ace cont ami nat i on deposi t s i n accor dance wi t h NADCA St andar ds.

a. Cl ean al l ai r handl i ng uni t ( AHU) i nt er nal sur f aces, component s and condensat e col l ect or s and dr ai ns.

b. Assur e t hat a sui t abl e oper at i ve dr ai nage syst em i s i n pl ace pr i or t o begi nni ng wash down pr ocedur es.

c. Cl ean al l coi l s and r el at ed component s, i ncl udi ng evapor at or f i ns.

3. 2. 1. 10 Duct Syst ems

a. Cr eat e ser vi ce openi ngs i n t he syst em as necessar y i n or der t o accommodat e c l eani ng of ot her wi se i naccessi bl e ar eas.

b. Mechani cal l y c l ean al l duct syst ems t o r emove al l v i s i bl e cont ami nant s, such t hat t he syst ems ar e capabl e of passi ng NADCA Cl eani ng Ver i f i cat i on Test i ngs St andar ds.

3. 2. 2 Mechani cal Cl eani ng Met hodol ogy

3. 2. 2. 1 Sour ce Removal Cl eani ng Met hods

Cl ean t he HVAC syst em usi ng Sour ce Removal mechani cal c l eani ng met hods desi gned t o ext r act cont ami nant s f r om wi t hi n t he HVAC syst em and saf el y r emove cont ami nant s f r om t he f aci l i t y . Sel ect Sour ce Removal met hods whi ch wi l l r ender t he HVAC Syst em Vi si bl y Cl ean and capabl e of passi ng NADCA cl eani ng ver i f i cat i on met hods St andar ds and ot her speci f i ed st andar ds and t est s, i n accor dance wi t h al l gener al r equi r ement s. Use no cl eani ng met hod, or combi nat i on of met hods, whi ch coul d pot ent i al l y damage component s of t he HVAC syst em or negat i vel y al t er t he i nt egr i t y of t he system.

I ncor por at e t he use of vacuum col l ect i on devi ces t hat ar e oper at ed cont i nuousl y dur i ng c l eani ng f or al l met hods used. Connect a vacuum devi ce t o t he downst r eam end of t he sect i on bei ng cl eaned t hr ough a pr edet er mi ned openi ng. Use a vacuum col l ect i on devi ce of suf f i c i ent power t o r ender al l ar eas bei ng cl eaned under negat i ve pr essur e, such t hat cont ai nment of debr i s and t he pr ot ect i on of t he i ndoor envi r onment i s assured.

Equi p al l vacuum devi ces exhaust i ng ai r i nsi de t he bui l di ng, i ncl udi ng hand- hel d vacuums and wet - vacuums, wi t h HEPA f i l t er s ( mi ni mum ef f i c i ency) .

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Equi p al l vacuum devi ces exhaust i ng ai r out s i de t he f aci l i t y wi t h Par t i cul at e Col l ect i on i ncl udi ng adequat e f i l t r at i on t o cont ai n Debr i s r emoved f r om t he HVAC syst em, i n a manner t hat does not al l ow cont ami nant s t o r e- ent er t he f aci l i t y . Rel ease of debr i s out door s whi ch v i ol at es any out door envi r onment al st andar ds, codes or r egul at i ons i s not al l owed.

Al l met hods r equi r e mechani cal agi t at i on devi ces t o di s l odge debr i s adher ed t o i nt er i or HVAC syst em sur f aces, such t hat debr i s may be saf el y conveyed t o vacuum col l ect i on devi ces. Accept abl e met hods i ncl ude t hose whi ch wi l l not pot ent i al l y damage t he i nt egr i t y of t he duct wor k, nor damage por ous sur f ace mat er i al s such as l i ner s i nsi de t he duct wor k or syst em component s.

3. 2. 2. 2 Met hods of Cl eani ng Fi br ous Gl ass I nsul at ed Component s

Thor oughl y c l ean gl ass acoust i cal i nsul at i on el ement s pr esent i n any equi pment or duct wor k wi t h HEPA vacuumi ng equi pment . Cl ean whi l e t he HVAC syst em i s under const ant negat i ve pr essur e, and not per mi t t ed t o get wet i n accor dance wi t h appl i cabl e NADCA and NAI MA st andar ds and recommendations.

Do not use cl eani ng met hods t hat cause damage t o f i br ous gl ass component s or r ender s t he syst em capabl e of passi ng Cl eani ng Ver i f i cat i on Test s NADCA Standards.

3. 2. 2. 3 Damaged Fi br ous Gl ass Mat er i al

I f t her e i s any evi dence of damage, det er i or at i on, del ami nat i on, f r i abl e mat er i al , mol d or f ungus gr owt h, or moi st ur e such t hat f i br ous gl ass mat er i al s cannot be r est or ed by c l eani ng or r esur f aci ng wi t h an accept abl e i nsul at i on r epai r coat i ng, i dent i f y t hem t o t he Cont r act i ng Of f i cer f or replacement.

When r equest ed or speci f i ed, r emedi at e exposed damaged i nsul at i on i n ai r handl er s and/ or duct wor k r equi r i ng r epl acement .

3. 2. 2. 4 Repl acement Mat er i al

I f r epl acement of f i ber gl ass mat er i al s i s r equi r ed, conf or m al l mat er i al s t o appl i cabl e i ndust r y codes and st andar ds, i ncl udi ng t hose of UL and

SMACNA 1966.

Repl acement of damaged i nsul at i on i s not cover ed by t hi s speci f i cat i on.

3. 2. 2. 5 Cl eani ng of Coi l s

Use any cl eani ng met hod whi ch r ender s t he coi l v i s i bl y c l ean and capabl e of passi ng NADCA Coi l Cl eani ng Ver i f i cat i on St andar ds. Coi l dr ai n pans ar e subj ect t o Non- Por ous Sur f aces Cl eani ng Ver i f i cat i on. Mai nt ai n oper abi l i t y of t he dr ai n f or t he condensat e at al l t i mes. Do not damage, di spl ace, i nhi bi t heat t r ansf er , or cause er osi on of t he coi l sur f ace or f i ns, and conf or m t o coi l manuf act ur er r ecommendat i ons when avai l abl e.

Thor oughl y r i nse coi l s wi t h c l ean wat er t o r emove any l at ent r esi dues.

3. 2. 2. 6 Ant i mi cr obi al Agent s and Coat i ngs

Onl y appl y ant i mi cr obi al agent s i f act i ve f ungal gr owt h i s r easonabl y suspect ed, or wher e unaccept abl e l evel s of f ungal cont ami nat i on have been

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Per f or m appl i cat i on of any ant i mi cr obi al agent s used t o cont r ol t he gr owt h of f ungal or bact er i ol ogi cal cont ami nant s af t er t he r emoval of sur f ace deposi t s and debr i s.

Use onl y ant i mi cr obi al agent s r egi st er ed by t he U. S. Envi r onment al Pr ot ect i on Agency ( EPA 402- F- 91- 102)( EPA 402- C- 01- 001) speci f i cal l y f or use wi t hi n HVAC syst em.

Appl y ant i mi cr obi al agent s i n st r i ct accor dance wi t h manuf act ur er ' s instructions.

Use onl y ant i mi cr obi al coat i ng pr oduct s, f or bot h por ous and non- por ous sur f aces, whi ch ar e EPA r egi st er ed, wat er sol ubl e sol ut i ons wi t h suppor t i ng ef f i cacy dat a and MSDS r ecor ds.

Appl y ant i mi cr obi al coat i ngs accor di ng t o manuf act ur er ' s i nst r uct i ons.

Spr ay coat i ngs di r ect l y ont o i nt er i or duct wor k sur f aces, r at her t han " f og" downst r eam ont o sur f aces. Achi eve a cont i nuous f i l m on t he sur f ace t r eat ed by t he coat i ng appl i cat i on, and appl y i n st r i ct accor dance wi t h manuf act ur er ' s mi ni mum mi l l age sur f ace appl i cat i on r at e st andar ds f or effectiveness.

3. 3 FI ELD QUALI TY CONTROL

3. 3. 1 CLEANLI NESS VERI FI CATI ON

3. 3. 1. 1 General

Ver i f i cat i on of HVAC Syst em cl eanl i ness i s det er mi ned af t er mechani cal c l eani ng and bef or e t he appl i cat i on of any t r eat ment or i nt r oduct i on of any t r eat ment - r el at ed subst ance t o t he HVAC syst em, i ncl udi ng ant i mi cr obi al agent s and coat i ngs.

3. 3. 1. 2 Vi sual I nspect i on

Vi sual l y i nspect t he HVAC syst em t o ensur e t hat no vi s i bl e cont ami nant s ar e pr esent .

I f no cont ami nant s ar e evi dent t hr ough vi sual i nspect i on, consi der t he HVAC syst em cl ean; however , f ur t her ver i f i cat i on of t he syst em cl eanl i ness t hr ough gr avi met r i c or wi pe t est i ng anal ysi s t est i ng may be r equest ed at t he di scr et i on of t he Cont r act i ng Of f i cer .

I f v i s i bl e cont ami nant s ar e evi dent t hr ough vi sual i nspect i on, r e- c l ean t hose por t i ons of t he syst em wher e cont ami nant s ar e v i s i bl e, and subj ect t o r e- i nspect i on f or c l eanl i ness.

3. 3. 1. 3 Gr avi met r i c Anal ysi s

At t he expense of t he Contractor , t est sect i ons of t he HVAC syst em f or c l eanl i ness usi ng t he NADCA Vacuum Test ( gr avi met r i c anal ysi s) as speci f i ed i n appl i cabl e NADCA St andar ds. Ensur e l evel s of debr i s col l ect ed ar e equal t o or l ess t han accept abl e l evel s def i ned i n appl i cabl e NADCA St andar ds.

I f gr avi met r i c anal ysi s det er mi nes t hat l evel s of debr i s ar e equal t o or l ower t han t hose l evel s speci f i ed, t he syst em i s consi der ed cl ean and t o

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I f gr avi met r i c anal ysi s det er mi nes t hat l evel s of debr i s exceed t hose speci f i ed i n appl i cabl e NADCA st andar ds, t he syst em wi l l not be consi der ed cl ean, and r e- cl eani ng of t hose sect i ons of t he syst em whi ch f ai l ed c l eanl i ness ver i f i cat i on wi l l be r equi r ed at t he expense of t he HVAC syst em cl eani ng cont r act or .

Per f or m cl eanl i ness ver i f i cat i on i mmedi at el y af t er mechani cal c l eani ng and bef or e t he HVAC syst em i s r est or ed t o nor mal oper at i on.

3. 3. 1. 4 Ver i f i cat i on of Coi l Cl eani ng

Cl eani ng i s t o r est or e t he coi l pr essur e dr op t o wi t hi n 10 per cent of t he pr essur e dr op measur ed when t he coi l was f i r st i nst al l ed. I f t he or i gi nal pr essur e dr op i s not known, t he coi l wi l l be consi der ed cl ean onl y i f t he coi l i s f r ee of f or ei gn mat t er and chemi cal r esi due, based on a t hor ough vi sual i nspect i on ( see NADCA HVAC I nspect i on Manual St andar ds) .

3. 3. 2 Post - Pr oj ect Repor t

At t he concl usi on of t he pr oj ect , pr ovi de a Test i ng Pr ocedur es Summar y and Post - Pr oj ect Repor t i ndi cat i ng t he f ol l owi ng:

a. Success of t he c l eani ng pr oj ect , as ver i f i ed t hr ough vi sual i nspect i on or gr avi met r i c anal ysi s.

b. Ar eas of t he syst em f ound t o be damaged and/ or i n need of r epai r .

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