Performance Rating of Central Station Air-handling Unit Supply Fans

AHRI Sandard 430 (I-P) 2014 Sandard for Performance Raing of Cenral Saion Air-handling Uni Supply Fans

IMPORTANT SAFETY DISCLAIMER AHRI does no se safey sandards and does no cerify or guaranee he safey of any producs, componens or sysems designed, esed, raed, insalled or operaed in accordance wih his sandard/guideline. I is srongly recommended ha producs be designed, consruced, assembled, insalled and operaed in accordance wih naionally recognized safey sandards and code requiremens appropriae for producs coered by his sandard/guideline. AHRI uses is bes effors o deelop sandards/guidelines employing sae-of-he-ar and acceped indusry pracices. AHRI does no cerify or guaranee ha any ess conduced under is sandards/guidelines will be non-hazardous or free from risk. Noe: This sandard supersedes AHRI Sandard 430-2009. See AHRI Sandard 431 for SI raings. Scope of Cerificaion Program and Cerified Raings Please refer o he mos curren ersion of he Cenral Saion Air-handling Uni s Supply Fans Cerificaion Program Operaions Manual (OM) for he Scope of he Cerificaion Program and Cerified Raings. Price $10.00 (M) $20.00 (NM) Prined in U.S.A. Copyrigh 2014, by Air-Condiioning, Heaing, and Refrigeraion Insiue Regisered Unied Saes Paen and Trademark Office

TABLE OF CONTENTS SECTION PAGE Secion 1. Purpose... 1 Secion 2. Scope... 1 Secion 3. Definiions... 1 Secion 4. Classificaions... 3 Secion 5. Tes Requiremens... 4 Secion 6. Raing Requiremens... 11 Secion 7. Symbols and Subscrips... 12 Secion 8. Minimum Daa Requiremens for Published Raings... 12 Secion 9. Marking and Nameplae Daa... 13 Secion 10. Conformance Condiions... 13 FIGURES Figure 1. Unduced Fan Discharge - Horizonal Arrangemen... 2 Figure 2. Duced Fan Discharge - Horizonal Arrangemen... 3 Figure 3. Oule Tes Uni Configuraion for Muliple Parallel Housed Fans in CSAHUs wih Indiidual Duced Discharges... 4 Figure 4. Single Oule Tes Uni Configuraion for Single or Muliple Parallel Plenum Fans in CSAHUs wih Full Face Opening Axial Discharge.... 5 Figure 5. Figure 15 Reprined from AMCA Publicaion 210-07, Laboraory Mehods of Tesing Fans for Cerified Aerodynamic Performance Raing... 5 Figure 6. Figure 12 Reprined from AMCA Publicaion 210-07, Laboraory Mehods of Tesing Fans for Cerified Aerodynamic Performance Raing...6 Figure 7. Dimensions for Inle Vane Proporionaliy... 7 Figure 8. Duced Fan Discharge CSAHU wih Airflow Direcion Change... 8 Figure 9. Fan and Uni Characerisics - Fan Raed and Uni Tesed...10 Figure 10. Fan and Uni Characerisics - Fan Raed and Uni Calculaed...11

APPENDICES Appendix A. References - Normaie... 14 Appendix B. References - Informaie... 14 Appendix C. Crieria for Proporionaliy-Informaie... 15 FIGURES FOR APPENDICES Figure C1. Dimensions Used for Proporionaliy Equaions - Housed Fan... 17 Figure C2. Dimensions Used for Proporionaliy Equaions - Plenum Fan... 17 Figure C3. Dimensions Used for Proporionaliy Equaions - Axial Fan... 17 Figure C4. Dimensions Used for Proporionaliy Equaions - Muliple Fans (End Views)... 18

AHRI STANDARD 430 (I-P)-2014 PERFORMANCE RATING OF CENTRAL STATION AIR- HANDLING UNIT SUPPLY FANS Secion 1. Purpose 1.1 Purpose. The purpose of his sandard is o esablish for Cenral Saion Air-handling Uni Supply Fans: definiions; classificaions; es requiremens; raing requiremens; minimum daa requiremens for Published Raings; marking and nameplae daa; and conformance condiions. 1.1.1 Inen. This sandard is inended for he guidance of he indusry, including manufacurers, engineers, insallers, conracors, and users. 1.1.2 Reiew and Amendmen. This sandard is subjec o reiew and amendmen as echnology adances. Secion 2. Scope 2.1 Scope. This sandard applies o Cenral Saion Air-handling Unis, as defined in Secion 3. 2.1.1 This sandard applies o supply fan raings for Plenum Fans in a cabine wih a Full Face Opening Axial Discharge, Housed Cenrifugal Fans, and Axial Fans. 2.2 Exclusions. 2.2.1 This sandard does no apply o forced-circulaion, free-deliery air-coolers for refrigeraion, which are coered in ANSI/AHRI Sandard 420. 2.2.2 This sandard does no apply o uni heaers inended for free deliery of heaed air or o room fan-coils as defined in ANSI/AHRI Sandard 440. 2.2.3 This sandard does no apply o unis ha hae direc expansion coils incorporaed by he manufacurer in a mached spli sysem air-condiioner, or as oherwise defined in he produc scope definiion of he AHRI Uniary Small Equipmen and Uniary Large Equipmen Secions and coered in ANSI/AHRI Sandard 210/240 or in ANSI/AHRI Sandard 340/360. 2.2.4 This sandard does no apply o uni enilaors as defined in ANSI/AHRI Sandard 840. 2.2.5 This sandard does no apply o ariable refrigeran flow equipmen as defined in ANSI/AHRI Sandard 1230. 2.2.6 This sandard does no apply o DX Dedicaed Oudoor Air Sysem Unis as defined in ANSI/AHRI Sandard 920. 2.2.7 This sandard does no apply o Compuer and Daa Processing Room Air Condiioners as defined in ANSI/AHRI Sandard 1360. Secion 3. Definiions All erms in his documen will follow he sandard indusry definiions in he ASHRAE Terminology websie (hps://www.ashrae.org/resources--publicaions/free-resources/ashrae-erminology) unless oherwise defined in his Secion. 3.1 Acual Cubic Fee Per Minue (ACFM), cfm. The uni of airflow airflow uncorreced for air densiy. All airflow in his sandard is considered o be acual airflow rae. 3.2 Cenral Saion Air-handling Uni (CSAHU). A facory-made encased assembly consising of a supply fan or fans in parallel which may also include oher necessary equipmen o perform one or more of he funcions of circulaing, cleaning, 1

AHRI STANDARD 430 (I-P)-2014 heaing, cooling, humidifying, dehumidifying and mixing of air. I shall no conain a source of mechanical cooling. This assembly is capable of use wih duc work haing a oal saic resisance of a leas 0.5 in H 2 O. 3.2.1 Duced Fan Discharge Cenral Saion Air-handling Uni. A uni ha has a duced fan oule. (See Figure 2. Noe ha Figure 2 aapplies o HousedHoused Cenrifugal Fan and Axial Fans and ha a Housed Cenrifugal Fan is sshown.) 3.2.2 Unduced Fan Discharge Cenral Saion Air-handling Uni. A uni conaining a fan ha does no hae a duced fan oule. (See Figure 1. Noe ha Figure 1 applies o all fan ypes in he sandard and ha a Housed Cenrifugal Fan is shown.) 3.3 Full Face Opening Axial Discharge. Where he discharge opening of he CSAHU is he same cross-secional dimensions as he inerior of he CSAHU s casing and he direcion of he airflow is parallel wih he shaf of he fan or fans. 3.4 Supply Fan. The fan ha proides enough pressure o oercome he supply air resricion and may proide some or all of he pressure o oercome he reurn air resricion o proide air ino he condiioned space. 3.4.1 Horizonal Shaf. A fan shaf ha is parallel o he ground. 3.4.2 Verical Shaf. A fan shaf ha is perpendicular o he ground. 3.4.3 Direc Drie. Drier and drien fans wih posiie direc connecions for roaions a he same speed. 3.4.4 Bel Drie. Drier and drien fans wih posiie beled connecions for roaions a any speed. 3.4.5 Plenum Fan. A fan assembly consising of a single inle impeller mouned perpendicular o airflow ha pressurizes a plenum chamber in an air-disribuion sysem. 3.4.6 Axial Fan. A housed fan ha moes air in he general direcion of he axis abou which i roaes. This includes ubeaxial fans, cenaxial fans, and aneaxial fans. Fan roor or wheel wihin a ubular-ype casing ha includes suppors for eiher Bel Drie or Direc Drie. 3.4.7 Housed Cenrifugal Fan. Fan in which he air eners he impeller axially and leaes i subsanially in a radial direcion. Fan roor or wheel wihin a scroll-ype casing (shroud) ha includes suppors for eiher Bel Drie or Direc Drie. 3.4.8 Fan Housing. The saionary elemen which guides he air before and afer he fan s impeller. 3.5 Uni Appurenances. Equipmen added o Cenral Saion Air-handling Unis for purposes of conrol, isolaion, safey, saic pressure regain, energy/hea recoery, wear, ec. Such appurenances include coils, filers, dampers, air-mixers, spray assemblies, energy recoery deices, acousical silencers, eliminaors, ec. 2 Figure 1. Unduced Fan Discharge Horizonal Arrangemen

AHRI STANDARD 430 (I-P)-2014 Figure 2. Duced Fan Discharge Horizonal Arrangemen 3.6 Published Raing. A saemen of he assigned alues of hose performance characerisics, under saed Raing Condiions, by which a uni may be chosen o fi is applicaion. These alues apply o all unis of like nominal capaciy and ype (idenificaion) produced by he same manufacurer. As used herein, he erm Published Raing includes he raing of all performance characerisics shown on he uni or published in specificaions, aderising or oher lieraure conrolled by he manufacurer, a saed Raing Condiions. 3.7 Raing Condiions. Any se of operaing condiions under which a single leel of performance resuls, and causes only ha leel of performance o occur. 3.8 "Shall" or "Should". "Shall" or "should" shall be inerpreed as follows: 3.8.1 Shall. Where "shall" or "shall no" is used for a proision specified, ha proision is mandaory if compliance wih he sandard is claimed. 3.8.2 Should. "Should" is used o indicae proisions which are no mandaory bu which are desirable as good pracice. 3.9 Sandard Air. Air weighing 0.075 lb/f 3 which approximaes dry air a 70 F and a a baromeric pressure of 29.92 in. Hg. Secion 4. Classificaions 4.1 Mehods of Classificaion. Equipmen coered wihin he scope of his sandard shall be classified as shown: 4.1.1 Uni Type. 4.1.1.1 Duced Discharge 4.1.1.2 Unduced Discharge 4.1.2 Fan Type. 4.1.2.1 Housed Cenrifugal 4.1.2.1.1 Airfoil/Backward Inclined/Backward Cured 4.1.2.1.2 Forward Cured 4.1.2.2 Axial 4.1.2.3 Plenum 3

AHRI STANDARD 430 (I-P)-2014 4.1.3 Fan Drie Type. 4.1.3.1 Bel Drie 4.1.3.2 Direc Drie Secion 5. Tes Requiremens 5.1 Tes Requiremens. All Sandard Raings shall be erified by ess conduced in accordance wih ANSI/AMCA Sandard 210 and ANSI/ASHRAE Sandard 51, excep as modified by Secion 5.1.1.3. 5.1.1 Arrangemens for Tesing. 5.1.1.1 Single Oule Duced Fan Discharge Cenral Saion Air-handling Unis. Single oule Duced Fan Discharge Cenral Saion Air-handling Unis shall be esed in accordance wih ANSI/AMCA Sandard 210 and ANSI/ASHRAE Sandard 51. 5.1.1.2 Muliple Oule Duced Fan Discharge Cenral Saion Air-handling Unis. Muliple oule Duced Fan Discharge Cenral Saion Air-handling Unis shall be esed as in Secion 5.1.1.1 wih each fan oule duced as shown in Figure 3 o he airflow measuring eses seup. No correcions for iindiidual fan oule duc fricion losses shall be mademade. Figure 3. Oule Tes Uni Configuraion for Muliple Parallel Housed Fans in CSAHUs wih Indiidual Duced Discharges 5.1.1.3 Unduced Fan Discharge Cenral Saion Air-handling Unis. Unduced Fan Discharge Cenral Saion Air-handling Unis shall be esed in accordance wih ANSI/AMCA Sandard 210/ANSI/ASHRAE Sandard 51, excep when an oule chamber wih muliple nozzles wihin he chamber is used. The es chamber cross-secional area shall be sized so ha he maximum air elociy does no exceed 400 fpm. The es chamber heigh and widh shall be a leas 5% greaer han he respecie heigh and widh of he duc connecion a he es chamber. Discharge area canno exceed he es chamber area. For example, see Figure 4. 4

AHRI STANDARD 430 (I-P)-2014 Figure 4. Single Oule Tes Uni Configuraion for Single or Muliple Parallel Plenum Fans in CSAHUs wih Full Face Opening Axial Discharge 5.1.1.4 Plenum Fan Unis. The raing configuraion for eiher Duced Fan Discharge or Unduced Fan Discharge plenum fan unis shall be full face discharge wih he minimum spacing allowed per he manufacurer s specificaions beween he coil and he fan. Figure 15 in he 2007 reision of AMCA 210 shall be used for he es se-up of bel-drie plenum fan unis (see Figure 55). Figures 12 or Figure 15 in he 2007 reision of AMCA 210 shall be used for he es se-up of direc-drie plenum fan unis (see Figures 55 and 66). Figure 5. Figure 15 Reprined from AMCA Publicaion 210-07, Laboraory Mehods of Tesing Fans for Cerified Aerodynamic Performance Raing 5

AHRI STANDARD 430 (I-P)-2014 Figure 6. Figure 12 Reprined from AMCA Publicaion 210-07, Laboraory Mehods of Tesing Fans for Cerified Aerodynamic Performance Raing 5.1.1.5 Unis wih Direc Drie Fans. The power measuremen for unis wih direc drie supply fans shall be eiher calibraed moor (as defined in Secion 4.4.3 of AMCA 210) or reacion dynamomeer (as defined in Secion 4.4.1 of AMCA 210). 5.1.1.6 Unis wih Bel Drie Fans. The power measuremen for unis wih bel drie supply fans shall be reacion dynamomeer (as defined in Secion 4.4.1 of AMCA 210). 5.2 Descripion of Tes Uni. The es uni shall hae an inernal pressure drop of a leas 0.075 in H 2 O a he raed airflow. 5.3 Exension of Tes Daa. In lieu of esing eery configuraion, i is accepable o exend es daa o oher configuraionsconfiguraions in accordance wih he proisions of he following subsecions: 5.3.1 Applicaion of Fan Laws o Unis wih Inle Vanes. Unis wih inle anes may be raed one of hree ways: 1) using he fan laws as described by Secion 5.3.2 for proporional unis wih proporional fans and inle anes; 2) using he fan laws as described in Secion 5.3.3 for proporional unis wih non-proporional fans and inle anes; or 3) using he fan laws by applying he appropriae inle ane derae facors o unis wihou inle anes raed per Secions 5.3.2 or 5.3.3 when he inle anes of he es uni are proporional o he inle anes of he raed unis. (Since all requiremens for proporionaliy of cabines, fan impellers, and housing are saisfied by proisions in eiher Secion 5.3.2 or 5.3.3 wihou inle anes, raed unis wih inle anes deried by inle ane derae facors mus only mee inle ane proporionaliy crieria.) Inle anes shall be considered o be proporional when he inle anes resul in ne airflow areas no less han 92.5% of hose deried from exac proporionaliy (as defined in Secion 5.3.2) when locaed wihin 0.5 impeller diameer from he fan inle. The es uni shall be esed wih anes in he wide open posiion as specified by he manufacurer. Vane shaf angle, θ (wih respec o fan shaf cenerline), and he number of ane blades for he raed uni mus be he same as for he es uni (Figure 7). When ealuaing geomerical proporionaliy of inle anes, he disance beween ane and impeller (defined as dimensions beween impeller inle plane and he closes poin of anes wih he anes a wide open posiion, as se by he manufacurer) and he disance beween cabine side and fan inle shall be linearly proporional wihin 1.5%. The mehod of raing one uni wih inle anes from he es of anoher is described in Secions 5.3.3.1 hrough 5.3.3.7. 6

AHRI STANDARD 430 (I-P)-2014 Figure 7. Dimensions for Inle Vane Proporionaliy 5.3.2 Applicaion of Fan Laws o Proporional Unis wih Proporional Fans. Tes daa may be exended by use of he fan laws o unis conaining fans, geomerically proporional fan cabines and impellers (Appendix C). The fan impeller diameer of he uni o be calculaed shall no be less han 65% of he fan impeller diameer of he es uni. Fans are considered o be proporional when: a. Impeller widh, housing deelopmen radii, and housing widh are proporional wihin ± 1.5%. b. Fan housing oule area is proporional wihin ±3%. Fan cabines are considered o be proporional when: a. The clearance beween he cabine and he neares fan housing are proporional or greaer. b. The clearance beween adjacen fan housings, as measured parallel o he fan shaf, is proporional or greaer. c. The fan cabine inle and he fan cabine oule airflow cross secional areas are no less han 92.5% of he respecie geomerically proporionae alues. d. Arrangemen and locaion of inernal bearings and heir suppors, inle anes, moors and dries, shall resul in ne airflow areas no less han 92.5% of hose deried from exac proporionaliy when locaed wihin 0.5 impeller diameer of he fan inle. The basis for proporionaliy in eery case shall be he respecie impeller diameers.l. Linear dimensions shall be proporional o he diameer and areas shall be proporional o he square of he diameer. Single fan unis may be raed from he es of a muliple fan uni, proided ha he unis are oherwise proporional and ha he clearance beween fans on he muliple fan uni is no more han wice he proporionae clearance beween he cabine and he fan housing on a single fan uni. In no case, shall he raings of a muliple fan uni from ess of a single fan uni be acceped. Airflow and fan shaf power are considered o be proporional o he number of fans when all fans are equal size. Duced Fan Discharge Cenral Saion Air-handling Unis which hae a change in airflow direcion beween he coil and he fan (Figure 8) may be raed from ess of unis which do no hae his flow direcion change proided he plenum causing he air direcion change be considered an appurenance and he effec of is applicaion added o hose of oher appurenances as proided in Secion 6.1.1. There is no disincion in raing beween a erical discharge and a horizonal discharge Unduced Fan Discharge Cenral Saion Air-handling UnisUnis. The effecs of bols, nus, ries, ec. on proporions, shall be considered o be negligible. 7

AHRI STANDARD 430 (I-P)-2014 8 Figure 8. Duced Fan Discharge CSAHU wih Airflow Direcion Change 5.3.3 Applicaion of Fan Laws o Proporional Unis wih Non-pproporional Fans. The requiremens for proporional fan impellers and scrolls se forh in Secion 5.3.2 are waied when all fans which are no geomerically proporional are raed as fans alone on he basis of ess performed in accordance wih ANSI/AMCA Sandard 210/ANSI/ASHRAE Sandard 51. This applies only o fans of he same blade design. Backward inclined fan impellers are no considered o be he same design as airfoil impellers. All oher requiremens of Secion 5.3.2 shall be me. The mehod of raing one uni from he es of anoher is as follows: 5.3.3.1 Using he raing performance cure of he fan alone (wih or wihou inle anes) or he uni (wihou inle anes), creae non-dimensional performance cures including percenage wide-open airflow rae, cfm, percenage blocked igh saic pressure and percenage wide-open fan shaf power, bhp (Figure 9). 5.3.3.2 To derie he raing performance cure for he es uni wihou coil, add he es uni saic pressure daa o he saic resisance of he dry coil as deermined in accordance wih AHRI Sandard 410 (Figure 9). 5.3.3.3 Superimpose on Figure 9 he uni raing performance cure (wih or wihou inle anes) as deried under Secion 5.3.3.2 a he same rpm, expressing he alues in percenages of wide-open airflow rae, cfm, blocked igh saic pressure in. H 2 O and wide-open fan shaf power, bhp, of he fan alone (wih or wihou inle anes) or uni (wihou inle anes) (Figure 9). 5.3.3.4 For he uni which is o be raed, bu no esed, use he raing performance cure of he fan alone (wih or wihou inle anes) or uni (wihou inle anes) and plo percenages of wide open cfm, blocked igh saic pressure in. H 2 O and wide-open fan shaf power, bhp, in he same way as for he solid line cure in Figure 9 (Figure 10). 5.3.3.5 Adjus he cures in Figure 9 by he performance correcions beween pairs of cures as indicaed in Figure 10. The resulan cures are he calculaed performance raings for he uni no esed, expressed in percenages of performance of he fan alone (wih or wihou inle anes) or uni (wihou inle anes) (dashed lines in Figure 10). 5.3.3.6 To deermine he acual raing performance alues for he specific uni, muliply he percenage alues by he wide open airflow rae, cfm, blocked igh saic pressure and wide open fan shaf power, bhp, of

AHRI STANDARD 430 (I-P)-2014 he specific uni's fan alone (wih or wihou inle anes) or specific uni (wihou inle anes) a he same rpm as in Figure 9 performance cures. 5.3.3.7 The same procedure as for Secion 5.3.3.6 applies o muliple fan unis, excep ha he airflow rae, cfm, and fan shaf power, bhp, alues for he fan alone (wih or wihou inle anes) are muliplied by he number of fans before applying o he uni, wih he resricions shown in he second paragraph of Secion 5.3.2. Single fan unis may be raed from he ess of muliple fan unis, bu muliple fan unis shall no be raed from ess of single fan unis. 9

AHRI STANDARD 430 (I-P)-2014 Figure 9. Fan and Uni Characerisics- Fan Raed and Uni Tesed Noe: All Percenages Referred o Fan Alone wih or wihou Inle Vanes and/or Uni wihou Inle Vanes 10

AHRI STANDARD 431 (I-P)-2014 Figure 10. Fan and Uni Characerisics- Fan Raed and Uni Calculaed Noe: All Percenages Referred o Fan Alone wih or wihou Inle Vanes and/or Uni wihou Inle Vanes Secion 6. Raing Requiremens 6.1 Air-handling Raings. Published aair-handling raings represen he performance of he fan secion alone wihou coil and shall be expressed in erms of he airflow rae, acfm, saic pressure, in H 2 O (correced for Sandard Air), fan speed, rpm, and he power required a he fan shaf, fan shaf power, bhp, (correced for Sandard Air) based on he procedures oulined in Secions 5.2 and 5.3 of his sandard. 11

AHRI STANDARD 430 (I-P)-2014 6.1.1 Appurenances. The effecs of non-raed appurenances such as coils, filers, dampers, air-mixers, spray assemblies, eliminaors, silencers, humidifiers, ec., included as par of he uni shall be aken ino accoun in order o esablish he oerall performance of he combined uni. These effecs shall be proided by he manufacurer and saed in erms of pressure drop, in H 2 O, measured across he appurenance oer he range of air quaniies for which he uni is raed. 6.2 Tolerances. To comply wih his sandard, measured Fan Speed, rpm shall no exceed 105% of Published Raing and fan shaf power, bhp, shall no exceed 107.5% of Published Raing a he published olume and pressure. Secion 7. Symbols and Subscrips 7.1 Symbols and Subscrips. The symbols and subscrips used in his sandard are as follows: A = Combined area of indiidual fan oules, f 2 A i = Area of indiidual fan oules, f 2 C = Closes disance from inside wall o enering plane of inle cone (HousedHoused Cenrifugal Fans only), in D = Disance from opposie side wall o enering plane of opposie inle cone (HousedHoused Cenrifugal Fans only), in D 1 = Impeller diameer measured a he blade ouer ip, f D 2 = Inle cone diameer a inle edge of cone for all fan ypes, f E 1,2,n = For muliple parallel fans, disance from he fan shaf cenerline o he adjacen fan shaf cenerline (plenum and axial fans) or disance from he inle plane of one fan o he inle plane of he adjacen fan (HousedHoused Cenrifugal FansFans), f G = Inernal cabine heigh from op of boom panel or floor o inside of op panel, f H 1 = Closes erical dimension from fan wheel ouside diameer o inside of cabine, in J = Perpendicular disance from op of fan cuoff o inside of op discharge duc surface, in K w = Widh of he housed opening from inside of fan housing surface o inside of opposie fan housing surface measured a he oule plane of he fan housing, f K = Heigh of he housed opening from inside of fan housing surface o inside of opposie fan housing surface measured a he oule plane of he fan housing, f L 1 = Closes horizonal dimension from fan wheel ouside diameer o inside of he cabine, in L c = Cabine lengh in direcion of airflow from inle plane o oule plane (axial flow fans) or from inle plane o inside of discharge panel (Plenum Fans and HousedHoused Cenrifugal Fan), f L i = Closes disance from coil leaing face o fan inle plane for Housed Cenrifugal Fans and Plenum Fans, f. (For HousedHoused Cenrifugal FansFans, i is he disance from coil leaing face o he cenerline of he fan shaf) L o = Disance from axial fan exi plane or plenum fan hub-plae o downsream hea exchanger enering face, f. (For HousedHoused Cenrifugal Fan, i is he disance from he fan discharge face o he downsream hea exchanger enering face.) M = Fan wheel widh, f n = Number of oules R max = Proporional linear dimension, f R min = Proporional linear dimension, f S = Discharge opening heigh from inside of op of discharge duc surface o inside of boom duc surface measured a he oule plane of he uni, f = Refers o a uni wih esed performance raing T = Discharge opening widh from inside of side of discharge duc surface o inside of opposie side discharge duc surface measured a he oule plane of he uni, f θ = Angle from cenerline of fan shaf o cenerline of roaion of inle ane, degrees = Refers o a uni wih calculaed performance raing W = Inernal cabine widh from inside of panel o opposie inside of panel, f 12 Secion 8. Minimum Daa Requiremens for Published Raings 8.1 Minimum Daa Requiremens for Published Raings. As a minimum, Published Raings shall include all Sandard Raings. All claims o raings wihin he scope of his sandard shall include he saemen "Raed in accordance wih AHRI Sandard 430 (I-P)". All Claims o raings ouside he scope of his sandard shall include he saemen "Ouside he scope of

AHRI STANDARD 431 (I-P)-2014 AHRI Sandard 430 (I-P)". Whereer Applicaion Raings are published or prined, hey shall include a saemen of he condiions a which he raings apply. The following informaion shall be published for all Sandard Raings: 8.1.1 Saic Pressure, in H 2 O 8.1.2 Airflow Rae, acfm 8.1.3 Fan Speed, rpm 8.1.4 Fan Shaf Power, bhp Secion 9. Marking and Nameplae Daa 9.1 Marking and Nameplae Daa. As a minimum, he nameplae shall display he manufacurer's name and model designaion. If he nameplae shows elecrical characerisics, hen nameplae olages for 60 Hz sysems shall include one or more of he equipmen nameplae olage raings shown in Table 1 of ANSI/AHRI Sandard 110. Nameplae olages for 50 Hz sysems shall include one or more of he uilizaion olages shown in Table 1 of IEC Sandard 60038. Secion 10. Conformance Condiions 10.1 Conformance. While conformance wih his sandard is olunary, conformance shall no be claimed or implied for producs or equipmen wihin he sandard s Purpose (Secion 1) and Scope (Secion 2) unless such produc claims mee all of he requiremens of he sandard and all of he esing and raing requiremens are measured and repored in complee compliance wih he sandard. Any produc ha has no me all he requiremens of he sandard shall no reference, sae, or acknowledge he sandard in any wrien, oral, or elecronic communicaion. 13

AHRI STANDARD 430 (I-P)-2014 APPENDIX A. REFERENCES - NORMATIVE A1 Lised here are all sandards, handbooks and oher publicaions essenial o he formaion and implemenaion of he sandard. All references in his appendix are considered as par of he sandard. A1.1 ANSI/AHRI Sandard 110, Air-Condiioning and Refrigeraing Equipmen Nameplae Volages, 2012, Air- Condiioning, Heaing, and Refrigeraion Insiue, 2111 Wilson Bouleard, Suie 500, Arlingon, VA 22201, U.S.A. A1.2 ANSI/AHRI Sandard 210/240-2008 wih Addendum 1 and 2, Performance Raing of Uniary Air- Condiioning & Air-Source Hea Pump Equipmen, 2008, American Naional Sandards Insiue and Air- Condiioning & Refrigeraion Insiue, 2111 Wilson Bld, Suie 500, Arlingon, VA 22201, U.S.A. A1.3 ANSI/AHRI Sandard 340/360-2008 wih Addendum 2, Performance Raing of Commercial and Indusrial Uniary Air-condiioning and Hea Pump Equipmen, 2008, American Naional Sandards Insiue and Air- Condiioning & Refrigeraion Insiue, 2111 Wilson Bld, Suie 500, Arlingon, VA 22201, U.S.A. A1.4 ANSI/AHRI Sandard 410, Forced-Circulaion Air-Cooling and Air-Heaing Coils wih Addenda 1,2, and 3, 2001, Air-Condiioning, Heaing, and Refrigeraion Insiue, 2111 Wilson Bouleard, Suie 500, Arlingon, VA 22201, U.S.A. A1.5 ANSI/AHRI Sandard 420-2008, Performance Raing of Forced-Circulaion Free-Deliery Uni Coolers for Refrigeraion, 2008, American Naional Sandards Insiue and Air-Condiioning & Refrigeraion Insiue, 2111 Wilson Bld, Suie 500, Arlingon, VA 22201, U.S.A. A1.6 ANSI/AHRI Sandard 440-2009 wih Addendum 1, Performance Raing of Room Fan-Coils, 2009, American Naional Sandards Insiue and Air-Condiioning & Refrigeraion Insiue, 2111 Wilson Bld, Suie 500, Arlingon, VA 22201, U.S.A. A1.7 ANSI/AHRI Sandard 840-1998, Sandard for Uni Venilaors, 2009, American Naional Sandards Insiue and Air-Condiioning & Refrigeraion Insiue, 2111 Wilson Bld, Suie 500, Arlingon, VA 22201, U.S.A. A1.8 ANSI/AMCA Sandard 210, Laboraory Mehods of Tesing Fans for Aerodynamic Performance Raing, 2007, Air Moemen and Conrol Associaion, Inc., 30 Wes Uniersiy Drie, Arlingon Heighs, IL 60004, U.S.A. A1.9 ANSI/ASHRAE Sandard 51, Laboraory Mehods of Tesing Fans for Raings, 2007, merican Sociey of Heaing, Refrigeraing, and Air-Condiioning Engineers, Inc., 11 Wes 42nd Sree, New York, NY 10036, U.S.A./1791 Tullie Circle N.E., Alana, GA 30329, U.S.A. A1.10 ASHRAE Terminology websie (hps://www.ashrae.org/resources--publicaions/free-resources/ashraeerminology), 2014, American Sociey of Heaing, Refrigeraing and Air-Condiioning Engineers, Inc., 1791 Tullie Circle, N.E. Alana, GA 30329, U.S.A. A1.11 IEC Sandard 60038, IEC Sandard Volages, 2009, Inernaional Elecroechnical Commission, 3, rue de Varembe, P.O. Box 131, 1211 Genea 20, Swizerland. APPENDIX B. REFERENCES - INFORMATIVE None. 14

AHRI STANDARD 431 (I-P)-2014 APPENDIX C. CRITERIA FOR PROPORTIONALITY- INFORMATIVE C1 This appendix ses forh procedures and equaions ha should be used o deermine he proporionaliy requiremens of Cenral Saion Air-handling Unis as defined by his sandard. C2 Basis of Proporionaliy. C2.1 The following denoes he ype of Cenral Saion Air-handling Uni being raed: C2.1.1. C2.1.2. refers o a uni wih esed performance raing. refers o a uni wih calculaed performance raing. C2.2 Proporional linear dimensions (Figure C1) are deermined using he following generic equaion: ( LinearDimension) ( LinearDimension) = Diameer Diameer C1 This raio of he wheel diameers shall no be less han 0.65. C2.3 Proporional areas (Figure C1) are deermined using he following generic equaion: Area Area Diameer = Diameer 2 C2 C3 Cabine Proporionaliy. C3.1 Linear dimensions C, D, E 1, E 2, G, J, K, L, M, S, T, W (Figure C1). C3.1.1 LinearDimension LinearDimension Diameer Diameer C3 C3.1.2 The raio of he raed uni linear dimension from he esed uni linear dimension shall be proporional wihin ± 1.5 percen. C3.2 Areas. C3.2.1 Fan Cabine Air Inle. G G C3.2.2 W W 0 Diameer.925 Diameer Fan Cabine Air Oule. 2 C4 S S T T 0 Diameer.925 Diameer 2 C5 15

AHRI STANDARD 430 (I-P)-2014 C3.2.3 The raio of he raed uni area from he esed uni area shall be proporional wihin ± 3 percen. C4 Fan Proporionaliy. C4.1 Proporional Linear Dimensions. C4.1.1 Fan Wheel Widh. M Diameer C6 M Diameer C4.1.2 Fan Oule Widh. K Diameer C7 K Diameer C4.1.3 Fan Housing Radii. R R max max Diameer Diameer C8 R R min min Diameer Diameer C9 C4.1.4 The raio of he raed uni radial dimension from he esed uni radial dimension shall be proporional wihin ± 1.5 percen. C4.2 Proporional Areas. C4.2.1 Fan Oule Area. J K Diameer J K Diameer 2 C10 C4.2.2 The raio of he raed uni area from he esed uni area shall be proporional wihin ± 3 percen. 16

AHRI STANDARD 431 (I-P)-2014 S and T are inside dimensions of he cabine oule. R min and R max are measured from he cener of he shaf. Figure C1. Dimensions Used for Proporionaliy Equaions Housed Fan Figure C2. Dimensions Used for Proporionaliy Equaions Plenum Fan Figure C3. Dimensions Used for Proporionaliy Equaions Axial Fan 17

AHRI STANDARD 430 (I-P)-2014 Figure C4. Dimensions Used for Proporionaliy Equaions Muliple Fans (End Views) 18