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Carrier 25HPA6 - page 1
25HP A6 Performa nce t Series 2 - - - Stag e Heat Pump with P u ron r Re fri gera nt 2t o5N o m i n a lT o n s Installation Instruction NOTE : Read the en tire in structio n m an ual b efore startin g the installatio n . SAFETY CONSIDERA TIONS Imp rop er installatio n , ad ju stmen t, alteration , service, m ainten an ce, or use ca n ca us e expl o ...
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Carrier 25HPA6 - page 2
2 INST ALLA TION RECOMMENDA TIONS NOTE : In som e cases no ise in the liv in g area has been traced to gas pul sa ti ons from i mpr oper i nst al lat ion of equipm ent. 1. Loca te unit awa y from windows , pati os, de cks , et c. whe re unit ope rat ion sound m a y dis turb c ust ome r . 2. Ensure t hat va por and liqui d t ube diam et er s are a p ...
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Carrier 25HPA6 - page 3
3 Op eratin g Amb ien t The mini mum out door opera ting a mbie nt i n cool ing mode i s 55 _ F (12. 78 _ C) without l ow ambi ent c ooling e nabl ed, a nd the ma xim um out door ope ra ti ng ambi ent i n cooli ng mode is 125 _ F (51. 67 _ C). At l ine volt age of 208v (or bel ow) and an outdoor am bie nt of 120 _ F (48. 9 _ C) (a nd above ), the c ...
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Carrier 25HPA6 - page 4
4 T able 1 – Re fri ger ant Conne cti ons and Rec ommende d Liquid and V apor T ube Di amet er s (i n.) UNI T SIZE LIQUID RATED V APOR* Connect ion Diameter Tu b e Diameter Connect ion Diameter Tu b e Diameter 25HP A624 3/8 3/8 3/4 3/4 25HP A636 3/8 3/8 7/8 7/8 25HP A648 3/8 3/8 7/8 1 --- 1 / 8 25HP A660 3/8 3/8 7/8 1 --- 1 / 8 * Un its are rated ...
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Carrier 25HPA6 - page 5
5 In stall Liq uid- - Line Filt er Drier Indoor Refer to Fig . 3 an d in stall filter d rier as follo ws: 1. Braz e 5 - - in. ( 127 mm) li quid tube t o t he indoor c oil. 2. Wrap filter drier with dam p clo th. 3. B raze filter d rier to a bove 5 - - in. (127 mm) l iquid tube . Flow ar row must poi nt towa rds indoor c oil. 4. C o nn ect an d b ra ...
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Carrier 25HPA6 - page 6
6 NOTE : Op eration o f un it o n imp ro per line v oltag e co nstitu tes abu se and co uld affect unit r eliability. See un it ratin g p late. Do n ot ins ta ll uni t in syst em wher e volta ge may fl uctua te above or be low perm issible lim its. NOTE : Us e copper wir e only be twe en dis conne ct s wit ch and uni t. NOTE : I nst all br anc h ci ...
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Carrier 25HPA6 - page 7
7 Airf low Selec tion f or FV4C Fan Coils Using Non - - Commun ica tin g (Non - - In fin ity) T h ermostats The FV4C provi des high- - a nd low- - st age bl ower oper at ion to match th e cap acities of co mp resso r at h ig h - - and low - - stag e. T o select recomm end ed airflow, refer to FV4 C Installation Instru ctio ns. Th e FV4 C u tilizes ...
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Carrier 25HPA6 - page 8
8 Ti m e Delays The unit t ime del ays i ncl ude: S Fiv e minu te time delay to start coolin g o r h eatin g op eratio n wh en there is a call fro m the th ermo stat o r user interface. T o bypas s thi s fe at ure , moment ari ly shor t and re lea se For ced De fr ost pi ns. S Five m inut e compr es sor r e- - cyc le de la y on ret urn from a brown ...
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Carrier 25HPA6 - page 9
9 GENE RAL INFORMA TI ON Infi nity Co ntroll ed l ow a mbie nt cool ing: This unit i s c apabl e of low a mbie nt cool ing down t o 0 ° F (- - 17.8 ° C) wit hout a kit ONL Y when using an Infi nity Control . A low am bie nt ki t is not requi re d for I nfini ty c ontr olle d low a mbie nt oper at ion. The I nfini ty Control provi des a n aut omat ...
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Carrier 25HPA6 - page 10
10 output i s provide d at t he Y1 connec ti on. Connec t the sole noid as show n in t he wi ri ng la bel diagr am. This is a 24vac output tha t is energized w h enev er th e com presso r is en ergized. It clo ses, in th e com pre ss or off m ode, to pre vent re fri gera nt migr ati on into the unit thr ough the l iqui d - - li ne. On S ystem s wit ...
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Carrier 25HPA6 - page 11
11 NOTE : The m odel pl ug take s pr ior ity ove r f act ory mode l inf orma tion input a t the fa ctor y . I f the model pl ug is re moved a ft er initial p o wer u p, the u ni t w ill op erate acco rd ing t o the last v alid mode l pl ug inst al le d, a nd fl as h the appropr ia te fa ult code temp orarily. Pres sur e Sw itch Protect ion The out ...
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Carrier 25HPA6 - page 12
12 2. If the e xpect ed re sul t is not ac hie ved, re move the s ole noid plug f rom t he c ompre ss or a nd wit h the unit running a nd the User In terface or th erm ostat calling fo r hig h stag e, test th e volt age output a t the plug wit h a DC vol tme ter . The re ad- ing s hould be 24 volt s DC. 3. If the co rrect DC vo ltage is at the cont ...
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Carrier 25HPA6 - page 13
13 Stat us Codes T abl e 4 shows the s ta tus code s fla she d by the a mber s ta tus li ght. Mos t sys tem proble ms c an be di agnos ed by re adi ng t he s ta tus code as fl a she d by the ambe r s ta tus light on the contr ol boa rd. The code s ar e fl as hed by a ser ie s of shor t and long fl as hes of the status lig h t. T he sh ort flashes i ...
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Carrier 25HPA6 - page 14
14 RVS/Heat Stage 2 O/B W 2 Heat Stage 1 W /W 1 Compressor Low Y1 Compressor High Y/Y2 Fan G 24VAC Hot Heating Rh 24VAC Hot Cooling Rc Dry Contact 1 D1 Dry Contact 2 D2 24VAC Comm on C Humidify HUM Outdoor Air Temp OAT Remote Room Sensor RRS OAT/RRS Com OAT/RRS Outdoor Sensor * Humidifier Solenoid Valve * Remote Room Sensor * O Y1 W1 G W2 C Y2 R W1 ...
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Carrier 25HPA6 - page 15
15 FINAL CHECKS IMPOR T ANT : Be fore l eavi ng job, be s ure to do the f ollow ing: 1. E n sure that all wiring is rou ted aw ay from tub in g and sheet me ta l edge s to preve nt rub- - thr ough or wir e pinc hing. 2. Ensur e that a ll wiri ng and tubing is se cure i n unit bef ore add in g pan els and co vers. Secu rely fasten all pan els and co ...
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Carrier 25HPA6 - page 16
16 Copyright 2009 Carrier Corp. S 7310 W . Mo rr is St. S In dia napolis, I N 46231 Print ed in U.S .A. Edition Date: 05/09 Manufacturer reser ves the right to change , at any time, specifications and designs without notice and without obligations. Catal og N o: 25HP A6 - - - 1SI Replaces : New 25HP A6 ...
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