Carrier 48EZ-A manual

1 48EZ( N) - - - A Comfort t 13 SE ER Si ngl e - - - Packag ed HYBR ID HEA T ® Du al F uel Sy stem w ith P uro n r (R - - - 410A) Re frige rant Sing le And T hree Phase 2 --- 5 N o m i n a l T o n s ( S i z e s 2 4 --- 6 0 ) Installation Instructions NOTE : Read the en tire instru ction m anual b efore starting th e installatio n. NOTE : I nst al [...]

2 words ar e used wit h the sa fet y - - a ler t symbol. DANGER ide ntif ies the m ost serio us h azards wh ich w ill r es ult i n se vere per sona l injur y or d eath. W AR NIN G sign ifies hazard s wh ich co uld resu lt in per- sona l i njur y or de at h. CAUTI ON is u s ed t o ide nti fy unsa fe pr ac ti c- es wh ich may re sult i n minor pe rs [...]

3 A09450 Fig. 2 - - 48EZ- - A24- - 36 Unit Di mens ions 48EZ - - A[...]

4 A09451 Fig. 3 - - 48EZ- - A42- - 60 Unit Di mens ions 48EZ - - A[...]

5 L ARGE CURB SMALL CURB ROOF CURB DET AIL Wood nailer* Roofcurb* Insulation (field supplied) *Provided with roofcurb Cant strip field supplied Roofing material field supplied Flashing field supplied HVAC unit base rails Roofcurb Sealing Gasket HVAC unit basepan Anchor screw A09090 A09415 A09418 C B A F D E G H C B A D E H F G A09419 UNIT S IZE CAT[...]

6 A CCESS P ANELS MUST BE IN PLACE WHEN RIGGING. P ANNEA UX D'A CCES DOIT ÊTRE EN PLACE POUR MANIPULA TION. 50CY502286 2.0 CA UTION - NOTICE TO RIGGERS PRUDENCE - AVIS AUX MANIPULATEUR Use top skid as spreader bar. / Utiliser la palette du haut comme barre de répartition SEAL STRIP MUST BE IN PLACE BEFORE PLACING UNIT ON ROOF CURB DUCTS DETA[...]

7 Inspec tion Prio r to in itial u se, and at mo nth ly in tervals, all rigg ing shack les, cl evi s pins , and s tr aps s hould be vi sua lly i nspe ct ed for any dam age , evi denc e of we ar , st ruc tur al defor ma tion, or cr ac ks. Par ti cul ar a tt ent ion s hould be pa id to e xce ss ive wear a t hoi st hooking poi nts a nd loa d support a[...]

8 A 1/8 - - in. ( 3.2 mm) NPT plugge d ta pping, accessib le for test gau ge conne cti on, mus t be ins ta ll ed i mmedi at el y upst re am of the gas suppl y conne ct ion t o the gas valve . Wh en in stalling th e gas s upply li ne, obse rve loc al code s per ta ining to g as pip e installatio ns. Refer to the NF GC N FP A 5 4/AN SI Z223.1 lat es [...]

9 T able 1 – Phys ic al Dat a - - Unit 48EZ- -A UNIT SIZE 48E Z - - - A 24040 24060 30040 30060 36060 36090 42060 42090 NOMI NAL CA P A CIT Y - - - to n 2 2 2 --- 1 / 2 2 --- 1 / 2 3 3 3 --- 1 / 2 3 --- 1 / 2 SHI PPING WEIG HT - - - l b. (kg) 359 163 359 163 373 169 373 169 379 172 379 172 461 209 461 209 COMP RESSORS Sc roll Quantity 1 RE FRIG E[...]

10 T able 1 - - Physic al Data - - Uni t 48EZ - - A (Cont ’d) UNIT SIZE 48E Z - - - A 48090 48115 48130 60090 60115 60130 NOMI NAL CA P A CIT Y - - - to n 444555 OPERA TING WEIGHT - - - lb (kg) 482 219 482 219 482 219 507 230 507 230 507 230 COMP RESSORS Sc roll Quantity 1 RE FRIG ERA NT (R - - - 410A) Quantity - - - lb (kg ) 9.6 4.4 12.3 5.6 REF[...]

11 Ste p 9 — Install D uct Co nnect ions The unit ha s duct f la nges on t he supply- - and re turn- -air openi ngs on the si de and bott om of the uni t. For downshot appli ca ti ons, t he duct work c onnec ts t o the roof c urb (Se e Fi g. 2 and 3 for con nectio n sizes an d locatio ns). Confi guri ng Units f or Downf low (V e rti cal ) Disc ha[...]

12 Horizontal Duct Covers A09061 Basepan Downflow (V ertical) Supply Knockout Basepan Downflow (V ertical) Return Knockout A09060 Fig. 8 - - Supply and Ret urn Duc t Ope ning Return Duct Panels Return & Supply Duct Panels fr om Underside of Base (Alternat e Method) Supply Duct Panels A09420 Fig. 9 - - V er ti cal ( Downflow) Di sc harge Duc t K[...]

13 Step 10 — I nsta ll El ectrical Co nn ection s ELECTRICAL SHOCK HAZARD Fai lur e t o fol low t his w ar ning coul d re sul t i n per sona l injur y or dea th. The unit c abi net mus t have a n unint er rupt ed, unbr oken el ec tr ic al gr ound. This ground may cons is t of an el ec tri ca l wir e connec te d to the unit ground scr ew in the co[...]

14 POWER SUPPL Y FIELD-SUPPLIED FUSED DISCONNECT HIGH VOLT AGE POWER LEADS (SEE UNIT WIRING LABEL) EQUIP GR CONTROL BO X SPLICE BO X LOW-V OLT AGE POWER LEADS (SEE UNIT WIRING LABEL) W Y G R C WHT(W1) YEL(Y) GRN(G) RED(R) BRN(C) THERMOST AT (TYPICAL) O ORN(O) GRA (Y2) BLU (DH) DH 3-Phase Only A09067 Fig. 10 - - High and Cont r ol- - V olt age Conne[...]

15 4. V eri fy t he f oll owing c ondit ions: a. Ma ke sur e gas l ine is f re e of ai r . Bef ore l ighti ng the uni t for th e first time, p erform the fo llowin g w ith th e gas val ve in the “ OFF” posi ti on: NOTE : I f the ga s supply pipe was not pur ged befor e conne ct ing the uni t, i t wil l be ful l of ai r . It is re comme nded tha[...]

16 MANIFOLD BURNER BURNER FLAME C99021 Fig . 12 - - M on op ort Bu rner Ch eck Heating C ontr ol Sta rt and c hec k the unit f or pr oper he ati ng cont rol ope ra tion a s follo ws (see fu rnace lig hting instru ctions located o n the in side of the co ntro l access pan el): 1. P lace roo m th ermo stat SY ST EM sw itch in the HE A T po sition an [...]

17 4. Divide numbe r of s ec onds in St ep 3 int o 3600 ( number of se conds in one hr) . 5. Multip ly result of Step 4 b y the n um ber of cu bic feet (cu ft) show n for one revol uti on of t es t dia l to obta in c ubic fe et (c u ft ) of gas f low per hour . 6. Multip ly result of Step 5 by B tu heatin g valu e o f gas to obta in t ota l me as u[...]

18 Ste p 4 — Star t- - up Cooling a nd Make A djust - ments Comple te the r equi red pr ocedur es gi ven i n the Pr e- -Star t- - Up section b efore starting th e unit. Do n ot jum per any safety dev ices whe n oper ati ng the unit. Do not ope ra te t he c ompre ss or when t he outdoor t empe ra tur e is be low 40 ° F( 4 . 4 ° C ) (un less acce[...]

19 Gas Heati ng Fan Sp eed Set-up T o ch ange th e gas h eating sp eed: 1. Remove the vi nyl ca p off of t he des ir ed s pee d ta p wir e (Re fer t o T able 6 for c olor c oding) . T abl e 10 shows t he temp erature rise asso ciated with each fan sp eed for a gi ven st at ic pr es sur e. Make s ure t hat the spe ed chos en deli ver s a temp eratur[...]

20 T a ble 7 – F ilter Pressur e D r op T a ble (IN. W .C.) FIL TER SIZE in. (mm) CFM 500 600 700 800 900 1000 1 100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 20X20X1 (508X508X 25) 0.05 0.07 0.08 0.10 0.12 0.13 0.14 0. 15 — — — — — — — — — — — 20X24X1 (508X610x25 ) — — — — 0.09 0.10 0.1 1 0.13 0.14 [...]

21 T able 1 0 (cont ) - - Dry Coil Air De live ry* - - Hori zont al and D ownfl ow Di sc harge - - Uni t 48EZ- - A24- - 60 UNIT HEA TIN G RISE RAN G E MOTOR SPEED WIRE COL OR EXTER NAL STA TI C PRES SUR E (in. W.C.) 0.1 0.2 0.3 0.4 0.5 0. 6 0.7 0.8 0.9 48EZ( - - - ,N)A30040 30 - - - 60 o F ( 1 7 --- 3 3 o C) Low Blue CFM 741 638 547 415 --- --- ---[...]

22 T able 1 0 (cont ) - - Dry Coil Air De live ry* - - Hori zont al and D ownfl ow Di sc harge - - Uni t 48EZ- - A24- - 60 UNIT HEA TIN G RISE RAN G E MOTOR SPEED WIRE COL OR EXTER NAL STA TI C PRES SUR E (in. W.C.) 0.1 0.2 0.3 0.4 0.5 0. 6 0.7 0.8 0.9 48EZ( - - - ,N)A36090 35 - - - 65 o F ( 1 9 --- 3 6 o C) Low Blue CFM 1234 1168 1093 1021 961 894[...]

23 T able 1 0 (cont ) - - Dry Coil Air De live ry* - - Hori zont al and D ownfl ow Di sc harge - - Uni t 48EZ- - A24- - 60 UNIT HEA TIN G RISE RAN G E MOTOR SPEED WIRE COL OR EXTER NAL STA TI C PRES SUR E (in. W.C.) 0.1 0.2 0.3 0.4 0.5 0. 6 0.7 0.8 0.9 48EZ( - - - ,N)A48090 35 - - - 65 o F ( 1 9 --- 3 6 o C) Low 1 Blue CFM 1402 1351 1311 1263 1224 [...]

24 T able 1 0 (cont ) - - Dry Coil Air De live ry* - - Hori zont al and D ownfl ow Di sc harge - - Uni t 48EZ- - A24- - 60 UNIT HEA TIN G RISE RAN G E MOTOR SPEED WIRE COL OR EXTER NAL STA TI C PRES SUR E (in. W.C.) 0.1 0.2 0.3 0.4 0.5 0. 6 0.7 0.8 0.9 48EZ( - - - ,N)A60090 35 - - - 65 o F ( 1 9 --- 3 6 o C) Low 1 Blue CFM 1445 1389 1341 1281 1236 [...]

25 A09068 Fig. 15 - - 208/230- - 1- - 60 W iri ng Diagr am, Unit 48EZ- -A 48EZ - - A[...]

26 A09209 Fig. 16 - - 208/230- - 3- - 60 W iri ng Diagr am, Unit 48EZ- -A 48EZ - - A[...]

27 A08019 Fig. 17 - - Cooli ng Chargi ng T able- -Subcool ing 48EZ - - A[...]

28 MAINTENANCE T o ensur e c onti nuing hi gh per form anc e a nd to mi nimi ze the po ssibility of p rematu re equ ipmen t failure, p eriod ic main tenan ce mu st b e p erformed on this eq uip ment. Th is comb inatio n hea ting/ cool ing unit should be inspe ct ed a t lea st onc e each y ear by a qual if ie d ser vic e per son. T o troubl es hoot [...]

29 f. Connec t 5 pi n plug a nd 4 pin pl ug to indoor blower motor . g. Rein stall blo wer access pan el (see Fig . 19 ). 3. Resto re electrical pow er to u nit. Start u nit and ch eck for prope r blowe r r ota ti on and mot or spee ds duri ng hea ti ng and coo ling cy cles. Integrated Gas Unit Controller (IGC) Induced Draft Motor Rollout Switch Mo[...]

30 BLOWER HOUSING 2 SETSCREWS (HIDDEN) C99085 Fig. 20 - - Rem oval of Motor and Blowe r Whee l A07680 Fig. 21 - - Burne r Rack Re moved FEEDER TUBE STUB TUBE DEFROST THERMOST A T C99029 Fig. 22 - - De fr ost The rmos tat Loc ati on A07680 Fig. 23 - - Burne r Rack Re moved Outdoor Fan UNIT OPERA TION HAZARD Failu re to fo llow this cautio n may resu[...]

31 OF2 OF1 ON QUIET SHIFT 120 30 60 60 30 90 INTER V AL TIMER OFF P3 DFT O R W 2 Y C T2 C C O DFT T1 Y P1 J1 SPEEDUP Speedup Pins Defrost inter v al DIP s witches Quiet Shift A08020 Fig. 24 - - De fr ost Cont r ol EXPLOSION, PERSONAL INJURY AND ENVIRONMENT AL HAZARD Fai lur e t o fol low t his w ar ning coul d re sul t i n pers onal inj ury , death[...]

32 C99097 Fig. 25 - - Ref ri ger ant Cir cui t 2. Disc onnect l ea ds on swi tc h. 3. Apply ohm me te r le ads ac ros s swi tc h. Y ou should ha ve cont inui ty on a good sw itc h. NOTE : Becau se th ese switch es are attach ed to refrig eration sys te m under pre ss ure , it is not advis abl e to rem ove thi s devic e for tr ouble shoot ing unl es[...]

33 COMPRESSOR ACCUMULATOR   OUTDOOR COIL INDOOR COIL LCS LEGEND HPS – High Pressure Switch LCS – Loss of Charge Switch Accurater ® Meter ing De vice Arro w indicates direction of flo w TXV in Metering  Position Bypass P osition HP S  C03011 Fig. 26 - - T ypic al Heat Pump Ope rat ion, Cool ing Mode COMPRESSOR ACCUMULATOR OUTDOOR[...]

34 Ser vic ing Sys te ms on Roof s and wi th Synt het ic m ate rial s POE ( polyol es te r) com pre ss or l ubric ants a re known to c aus e long term d amage to so me syn thetic ro ofin g materials. Exposur e, eve n if imme dia tel y cle ane d up, may c aus e emb rittlement (lead ing to crack ing ) to o ccur in on e year o r mo re. Whe n per for m[...]

35 T able 1 1 – T r ouble shoot ing Gui de - - Cooling or Heat Pump He ating M ode SYMPTOM CAUS E REMED Y Compr essor an d Outdoor f an w ill not star t. Po we r Fa i l ur e Cal l power com pany . Fuse blown o r circuit brea ker tripped R e p l a c ef u s eo rr e s e tc i r c u i tb r e a k e r . Def ective ther mostat, con tactor , tr ansfo rmer[...]

36 T able 12 – T r ouble shooti ng Guide –Heat ing SYMPTOM CAUSE REMEDY Burners will n ot ignit e W ater in gas line Drain. Ins tall drip leg. No power to fur nace Check power s upply fuses, w i r ing or circuit break er . No 24 - - v power s upply to contr ol circuit Check tr ansformer. NOT E: S ome tr ansformers hav e internal over - - curren[...]

37 ST AR T - - UP CHECKLIST (Re move and St or e in Job Fi le s) I. PRELI MINAR Y INFORMA TION MODEL NO.: SERIAL NO. : DA TE: TECHNICI AN: II. PRE ST ART - - U P (Insert check m ark in bo x a s ea ch item is co mp leted) ( ) VERIFY THA T ALL P ACKING MA TERIALS HA VE BEEN REMOVED FROM UNIT ( ) REMOVE ALL SHIPPING HOLD DOW N BOL TS AND BRACKETS PER [...]

38 Copyright 2009 Carrier Corp. S 7310 W . Morris St. S In dianapolis, IN 46231 Edition Date: 08/09 Manufacturer reser v es the right to change, at any time, specifications and designs without notice and without ob ligations. Catal og No: 48EZ - - - 06SI Replaces : 48EZ - - - 05SI 48EZ - - A[...]