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Carrier 25HCR manual

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Table of contents for the manual

  • Page 1

    Installation Instructions 25HCR COMF ORT t SER IES R - - - 22 HEA T PU MPS SIZES 18 TO 60 1 - - - 1/2 TO 5 NOMINAL T ONS A05341 Fig. 1 --- 25HC R NOTE : Read th e entire instru ctio n m anu al befo re starting th e installatio n . T ABLE OF CONTENTS P AGE SAFETY CONSIDERA TIONS 2 ....................... INST ALLA TION RECOMMENDA TIONS 2 ...........[...]

  • Page 2

    2 SAFETY CONSIDERA TIONS Im prope r inst al la tion, a djus tme nt, a lt era ti on, s er vic e, ma int ena nce , or use ca n ca use e xplos ion, fir e, el ec tri cal shoc k, or othe r c ondit ions whi ch ma y ca use dea th, pe rs onal i njury , or prope rty da ma ge. Cons ult a quali fie d inst al le r, s er vic e age ncy , or your dis tri butor or[...]

  • Page 3

    3 INST ALLA TION STEP 1 — Check Equi pment and Job Si te Unpack Uni t Move to fi nal l oca ti on. Remove c ar ton t aking ca re not t o dama ge un it. Insp ect Equipme nt File claim with ship p ing co m pan y prio r to in stallatio n if ship men t is dama ged or incom ple te. Loca te uni t ra ting pl at e on unit corne r pane l. I t c onta ins i [...]

  • Page 4

    4 2 O'CLOCK 10 O'CLOCK SENSING BULB STRAP SUCTION TUBE 8 O'CLOCK 4 O'CLOCK 7 ⁄ 8 IN. OD & SMALLER LARGER THAN 7 ⁄ 8 IN. OD A81032 Fig. 4 --- Posit ion of Sensi ng Bulb Re plac ing TXV on Pur on Indoor Coil 1. Pump s yste m down to 2 ps ig and r ec over re fr iger ant . 2. Rem ov e co il access pan el and fitting pan el f[...]

  • Page 5

    5 Outdoor units ma y be c onnec ted t o indoor se cti on using accessory tu b in g pack ag e or field - - s upplie d ref rige ra nt gra de tubi ng of cor re ct s ize and condi tion. For tubing r equir eme nts beyond 80 f t., subs ta nti al c apa cit y and pe rf orma nce l osse s c an occu r . F o llow ing the reco mm end ation s in th e Ap plicatio[...]

  • Page 6

    6 IMPOR T ANT : Che ck t o be c er ta in fa ct ory t ubing on both indoor a nd outdoor unit ha s not s hif ted dur ing shi pme nt. Ensure tube s ar e not rubbi ng aga inst each o th er o r an y sh eet metal. P ay close attentio n to feed er tubes, m akin g s sure w ire ties on feed er tube s ar e se cur e and ti ght. Be sure field wirin g com plies[...]

  • Page 7

    7 Connec t Co ntr ol W irin g Route 24v c ontr ol wire s thr ough contr ol wir ing gromme t and conne ct l ea ds to cont rol w ir ing. Se e Ther mosta t I nsta lla tion Ins truc ti ons for wi ring spe cif ic unit c ombina tions . (Se e Fig. 9.) Us e No. 18 A WG col or- -coded, i nsula te d (35 ° C m inim u m) wire. If thermo stat is located m o re[...]

  • Page 8

    8 24 VAC HOT R C W2 Y G R C RVS COOLING C W2 HP THERMOSTAT TYPICAL FAN COIL HEAT PUMP G O E W2 E W3 R Y 24 VAC COM HEAT STAGE 2 COOL/HEAT STAGE 1 INDOOR FAN EMERGENCY HEAT O * * * IF AVAILABLE * LEGEND 24- V FACTORY WIRING 24- V FIELD WIRING FIELD SPLICE CONNECTION OUTDOOR THERMOSTAT EMERGENCY HEAT RELAY SUPPLEMENTAL HEAT RELAY SHR EHR ODT A02325 /[...]

  • Page 9

    9 Seque nce of Op eratio n NOTE : De fr ost c ontr ol boa rd is equi pped wit h 5 mi nute loc kout timer th at is in itiated upon any int er rupt ion of pow er . T urn on powe r t o indoor and outdoor units . Tr ans for mer i s energi zed. Co olin g On a call for co o ling , th ermo stat mak es circu its R - - O , R - - Y , and R - - G . C ircuit R[...]

  • Page 10

    10 STEP 12 — Check Char g e Fac tor y cha r ge a nd cha r ging met hod ar e shown on uni t rat ing plate. T o ch eck charge in coo ling mo d e, refer to Co o ling On ly Pro ced ure. T o ch eck charge in h eatin g mo de, refer to Heating Ch eck C h art Pro ced ure. Cooli ng Only Pr oce dur e NOTE : If subc ooli ng c har ging c onditi ons are not f[...]