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Carrier 50AH manual

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Table of contents for the manual

  • Page 1

    Copy right 20 02 Carrie r Cor poration Form 50AH-6PD Single Pac kage Coolin g Units F eatur ing: • compact des ign • fle xibi lity • easy maint enance • hig h quali ty and reli abilit y • quiet a nd effic ient scro ll comp ressor techno logy Features /Benef its All in one package — high cooling effici ency , installati on con v enienc e[...]

  • Page 2

    2 locatio n is ideal for th e mainten ance technicia n, and five acce ss pane ls, easi ly removed, provide quick a nd convenient acces s to all co mponents wh en needed. As an added plus, all required service/ mainten ance acces s can be from one side allowing t h e unit to be located against a wall or ceiling plen um obstruc - tion, an ob vious sp[...]

  • Page 3

    3 LEGEND *Shipping weights include base unit plus packaging. †If components are to be split, additional refr igerant will be needed. **T wo-speed motor. ††Use T ype L copper only . NOTE: If components are to be split, the maximum length of refrigerant tubing to be used is 50 equivalent ft, assu ming components will be in stalled in same ho ri[...]

  • Page 4

    4 Thermostat and subb ase — Attractive wall-mounted 24-v accesso ry provide s precise temp erature co ntrol. Automatic a nd Manual changeover mod els availabl e. A thermostat subbase is av ailable that works with Cycle- LOC™ circuitry. If a safety device trips, compressor locks out and su bbase war ning ligh t (LK OUT) al erts occupa nt. Three [...]

  • Page 5

    5 Base unit dimensions DIME NSIONS (f t-in .) UNIT 50AH ABCD E 024 2-5 2-1 5 / 8 1- 5 3 / 4 1-2 1-1 036 2-4 3 / 4 2-2 1- 5 3 / 4 1-2 1-1 048 2-5 2-3 1-11 5 / 8 1-8 7 / 8 1-7 7 / 8 060 2-4 3 / 4 2-2 3 / 4 1-11 5 / 8 1-8 7 / 8 1-7 7 / 8 UNIT COMPONENT LOCA TIONS[...]

  • Page 6

    6 I De ter m ine co oling req uir eme nts at desi gn conditions. Given: Gross Cooling Capacity Required (TC) . . . . . . . . . . . . . . . . . . 39,000 Btuh Sensible Heat Capacity (SHC) . . . . . . 30,500 Btuh T emperature of Air Entering Condenser . . . . . 95 F T emperature of Air Ente ring Evaporator . . . . . . . . . . . . . . . 80 F edb/67 F e[...]

  • Page 7

    7 GROSS COOLING CAP ACITIES (cont) LEGEN D NO TES: 1. P e rformance b ased on n ominal con denser airflow l isted in physical dat a table on page 3 . 2. SHC is based on 80 F db temp erature of air ent ering th e coil. Bel o w 80 F db , sub tract (co rr f actor x c fm) from SH C. Above 80 F db, add (corr f actor x cfm) to SHC. Correct ion F a ctor =[...]

  • Page 8

    8 BEL T DRI VE EV AP ORA T OR F AN PER FORMANC E (Special Order Only, Pricing and or dering on related price pa ges.) LEGEND NO T E: Pulley setti ng must be adjusted to limit cfm to 450 c fm/ton maximum. Unit operation be yond that limit may result in blow-off and condensate problems. CONDENSER F AN PERFORMANCE LEGEND kW — T otal F an M otor P ow[...]

  • Page 9

    9 ELECTRIC HEA TER ST A TIC PRESSURE DROP (in. wg) NO T E: Abov e electr ic heaters are not UL (Underwriters’ Laboratories) or CSA (Canadian Standards Association) listed f or use with optional high-static e vapor at or-fan motor (048, 060 units only). Contr ols Oper ating seque nce Cooling — Ther mostat call s for cooling. Indo or (evapo ra- t[...]

  • Page 10

    10 ELECTR IC HEA TER DA T A LEGEND *May be field conv er ted t o single-phase units, see electric heat inst allation instructions. NO T E: Separate pow er source is required for all heaters. Control from base unit 50AH (24 v). ELECT RIC HE A T ER UNIT 88EN USED WITH UNIT 50AH V- P H (60 Hz) CAP . (kW) BRANCH CIRCUIT Heater Am ps MCA MOCP (Amps) 005[...]

  • Page 11

    11 T ypical w iring schematic 50AH048,060 — 230-1- 60 UNITS LEGEND AHA — Adjustable Heat Anticipator C— Contactor Compressor CB — Circuit Breaker CC — Cooling Compensator E Q UIP GND — Equipment Ground HPS — High-Pressure Switch HR — Heater Rela y IFC — Indoor (Ev aporator) F an Contac tor IFR — Indoor (Evapor ator) F an R ela y[...]

  • Page 12

    12 T ypical w iring schematic (c ont) 50AH036,048,060 — 208/2 30- 3-60 UNITS LEGEND AHA — Ad justab le Hea t Anticipator C— Contactor Compres sor CB — Circuit Breaker CC — Cooling Compensator CLO — Compressor Lockout CT — Current T ransformer E Q UIP GND — Eq uipment Ground HPS — High-Pressure Switch HR — Heater Relay IFC — In[...]

  • Page 13

    13 Application d ata OUTDOOR-AIR TEMPE R A TURE OPERA TING LIMITS (F) Field splitting inst ructions — If componen ts are spli t, maximum length of refrigerant tubing to be used is 50 ft, assumi ng componen ts are installed in same horizo ntal plane. Condenser may be mounted up to 12 ft above ev ap- orator . Liquid line tubing is 3 / 8 -in. OD cop[...]

  • Page 14

    14 Indoor P a c k aged Unit HV AC Guide S pecific ations — Se ction 15 787 Size Range: 2 to 5 T ons, Nomina l Carrier Mode l Number: 50AH Part 1 — General 1.01 SYSTEM DESCRIPTION Indoor mo unted, electricall y controll ed packaged horizontal cooling unit utilizing a hermetic type scroll compressor . 1.02 QUALITY ASSURANCE A. Unit shall be certi[...]

  • Page 15

    15 I. O perating char acteristics: 1. Unit shall operate using refrigerant R-22. 2. Unit sha ll be desi gne d for indo or sus pended horiz onta l moun ting an d ope rati on. J. Elec trical Requirements Unit shall ha ve single point power connection to leads in ter minal box. K. Special Featur es: Certain sta ndard features a re not ap plicable when[...]

  • Page 16

    Manufa cturer reser ves the right to disconti nue, or change at any time, specificat ions or designs wi thout noti ce and without incurrin g obligations. Ne w Pg 16 Catalog No . 525-00 039 Pri nted i n U.S .A. PC 111 Form 50AH- 6PD Repla ces: 50AH-5PD Book 1 4 Ta b 2 b 7 a Carrier Cor poration • Syracuse, New Y ork 13221 204 9-02 Book 1 Ta b I P [...]