Carrier 38AUZの取扱説明書

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Summary
  • Carrier 38AUZ - page 1

    Inst allation, S t art-Up and Service Instructions CONTENTS SA FE TY C ON SI DE RA TI ON S . . . . . . . . . . . . . . . . . . . . . . . 1 INST ALLA TION GUIDELI NES . . . . . . . . . . . . . . . . . . . . . . . 2 IN ST A LLA T IO N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13 St ep 1 — Pl an f or U ni t L oc at io n . . . ...

  • Carrier 38AUZ - page 2

    2 INST AL LA TION GUIDELIN E Replacem ent /Retrofit – R22 to Pu ron ® Replacement/retrofit installa tions require change-out of outdoor unit, metering device, an d filter driers. Change-out of indoor coil (evaporator) and interconnecting tubing is recommended. Existing evaporator coil – If the existing evaporator coil may be re-used, check wit ...

  • Carrier 38AUZ - page 3

    3 Fig. 1 — 38AUZ*07-14 Unit Dimens ions UNIT St andard Weig ht Corne r A Corner B Corner C Corner D Center of Gravity Unit Height lbs. kg. lbs. kg. lbs. kg. lbs. kg. lbs. kg. X Y Z H 38AUZ*07 328 149 128 58 68 31 62 28 70 32 21.00 [533.4] 19.00 [482.6] 13.00 [330.2] 42.36 [1076.0] 38AUZ*08 353 160 138 63 72 33 65 29 78 35 19.00 [482.6] 23.00 [584 ...

  • Carrier 38AUZ - page 4

    4 Table 1A — Physical Data — 3 8AUZ*07-14 Units — 60 Hz English U N I T S I Z E 3 8 A U Z * 0 7Z * 0 8Z * 1 2Z * 1 4 NOMINAL CAP ACITY (tons) 6 7.5 10 12.5 OPERA TING WEIGHT (lb) Aluminum-Fin Coils (Standard) 328 353 418 431 REFRIGERANT TYPE* R-410A Operating Charge, T ypical ( lb)† 8.4 10.2 13.8 18.0 Shipping Charge (lb) 4.4 4.9 6.3 7.3 CO ...

  • Carrier 38AUZ - page 5

    5 Table 1B — Physical Data — 38AUZ*07-14 Units — 60 Hz SI UNIT SIZE 38AU Z*07 Z*08 Z*12 Z*14 NOMINAL CAP ACITY (kW) 21.1 26.4 35.1 44 OPERA TING WEIGHT (kg) Aluminum-Fin Coils (Standard) 149 160 190 196 REFRIGERANT TYPE* R-410A Operating Charge, T yp ical (kg)† 3.8 4.6 6.3 8.2 Shipping Charge (kg) 2.0 2 .2 2.9 3.3 COMPRESSOR Scroll Qty ...M ...

  • Carrier 38AUZ - page 6

    6 Fig. 2 — Model Number Nomenclature Fig. 3 — Serial Number Nomenclature 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 3 8 A U Z A 0 4 A 0 G 6 – 0 A 0 A 0 _____________ ____ Model T ype Pa cka g in g 3 8A U= C ar r ie r Condensing Unit Puron r R - - - 410A Refrigerant 0=S t a n d a r d Ty p e o f C o i l Electrical Options Z = Single Circuit, ...

  • Carrier 38AUZ - page 7

    7 . INST AL LA T ION Jobsite Survey Complete the following checks before installation. 1. Consult local building codes and the NEC (National Electrical Code) ANSI/NFP A 70 for special installation requirements. 2. Determine unit location (from project plans) or select unit location. 3. Check for possible overhead obstructions which may in- terfere ...

  • Carrier 38AUZ - page 8

    8 in the liquid line. Refer to the indoor unit installation instructions for additional details. Determine equivalent line length adjustments for path and components and add to linear line lengths. See T ables 2 and 3; also refer to Part 3 of the Carrier System Design Manual and E20-II® software for design details and line sizing. Suction line siz ...

  • Carrier 38AUZ - page 9

    9 Table 4 — Refrigerant Specialities Part Numbers. Fig. 5 — Location o f Sight Glass(es) and Filter Driers Fig. 6 — Typical Piping Connection Assembly Pressure-test all joints from outdoor unit connections over to the evaporator coil, using nitrogen as pressure and with soap- and-bubbles. When pressure-testing is completed, remove the nitroge ...

  • Carrier 38AUZ - page 10

    10 leads according to required operation of the convenience outlet. If an always-energized convenience outlet operation is desired, connect the source leads to the line side of the unit-mounted disconnect. (Check with local codes to ensure this method is acceptable in your area.) If a de-energize v ia unit disconnect switch operation of the conveni ...

  • Carrier 38AUZ - page 11

    11 Fig. 9 — Conv enience Outlet Lo cation Non-powered type: This type requires the field installation of a general-purpose 125-volt 15-A circuit powered from a source elsewhere in the building. Observe national and local codes when selecting wire size, fus e or breaker requirements and disconnect switch size and loca tion. Route 125-v power suppl ...

  • Carrier 38AUZ - page 12

    12 Fig. 11 — Weatherproof Cover Installation All Units — V oltage to compressor terminals during operation must be within voltage range indicated on unit nameplate. See T able 5. On 3-phase units, voltages betw een phases must be balanced within 2% and the current within 10%. Use the formula shown in the legend for T able 5, Note 5 (see page 13 ...

  • Carrier 38AUZ - page 13

    13 Table 5 — Electrical Data — 38AUZ*07-14 6 0 Hz Units LEGEND UNIT SIZE 38AU F ACTOR Y - INST ALLED OPTION NOMINAL VOL TAGE VOL T AG E RANGE* COMPRESSOR F AN MOTORS (Qty 2) POWER SUPPL Y V -Ph-Hz MIN MAX RLA LRA FLA (ea) LRA (ea) MCA MOCP Z*07 NONE OR DISCONNECT CONVENIENCE OUTLET 208/230-3-60 187 253 19 123 1.5 3.7 25.2 45 NONE OR DISCONNECT ...

  • Carrier 38AUZ - page 14

    14 PRE-ST AR T -UP System Check 1. Check all air handler(s) and other equipment auxiliary components. Consult the manufacturer ’ s instructions regarding any other equip ment connected to the con- densing unit. If the unit ha s field-installed accessories, be sure all are properly installed and correctly wired. If used, the airflow switch mu st b ...

  • Carrier 38AUZ - page 15

    15 ADV ANCED SCROLL TEMPERA TURE PROTECTION (A ST P) — Advanced Scroll T emperature Protection (ASTP) is a form of internal dischar g e temperature protection, used in 38AUZ*12 and 38AUZ*14 units, that unloads the scroll com- pressor when the internal temperature reaches approximately 300°F . At this temperature, an internal bi-metal disk valve ...

  • Carrier 38AUZ - page 16

    16 Fig. 16 — 38AUZ*07 Charging Chart Fig. 17 — 38AUZ*08 Charging Chart Fig. 18 — 38AUZ*12 Charging Chart ...

  • Carrier 38AUZ - page 17

    17 Fig. 19 — 38AUZ*14 Charging Chart Fig. 20 — 38AU Wiring Diagram ...

  • Carrier 38AUZ - page 18

    18 OPERA TING SEQUENCE Base Unit Controls Indoor (Supply) Fan The indoor fan contactor (IFC) is remotely located at the fan coil or fan section. If the thermostat fan operation is selected as Continuous, the IFC is energi zed and the indoor (supply) fan motor runs continuously . If the thermostat fan operation is selected as Automatic, the IFC will ...

  • Carrier 38AUZ - page 19

    19 SER VICE Comfort Alert Diagnostic Module The Comfort Alert Diagnostic Module (CADM) monitors and analyzes data from the Copeland Scroll ® three-phase compres- sor and the thermostat demand. The CADM also provides a 3-minute anti-recycle time delay to compressor cycling. The CADM detects causes for electric al and system related failures without ...

  • Carrier 38AUZ - page 20

    20 Table 6 — LED Status Code s Status LED St atus LED Description Status LED T roubleshoo ting Information Green “POWER” Module has power Supply voltage is present at module terminals Red “TRIP” LED On Solid Thermostat demand signal Y is present, but the compressor is not running. 1. Compressor protector is open 2. Condensing unit power d ...

  • Carrier 38AUZ - page 21

    21 Table 7 — CADM Troubleshooting Crankcase Heater — The heater prevents refriger ant migration and compressor oil dilution during shutdown when- ever compressor is not operating. The heater is wired to cycle with the compressor; the heater is of f when compressor is run- ning, and on when compressor is off. The crankcase heater will operate as ...

  • Carrier 38AUZ - page 22

    22 NOV A TION™ Coi l Cleaning and Maintenance — T o clean the NOV A TION condenser coil, chemicals are NOT to be used; only water is approved as the cleaning solution. Only clean potable water is authorized for cleaning NOV A TION condensers. Clean the coil as follows: 1. T urn of f unit power . 2. Remove screws holding rear corner posts and to ...

  • Carrier 38AUZ - page 23

    23 Fig. 22 — CoreMax Acces s Port Assembly F ASTENER TORQUE V ALUES Table 8 — Torque Values TROUBLESHOOTING Compressor mounting bolts 65–75 in–lbs (734–847 N–cm) Condenser fan motor mounting bolts 20 ±2 in–lbs (226 ±23 N–cm) Condenser fan hub setscrew 84 ±2 in–lbs (949 ±136 N–cm) High-flow service port 96 ±10 in–lbs (1085 ...

  • Carrier 38AUZ - page 24

    24 TROUBLESHOOTING (con t) PROBLEM SOLUTIO N COMPRESSOR CYCLES ON LOW-P RESSURE SWITCH Indoor-Air Fan Running 1. Liquid line solenoid valve(s) fails to open. 1. Check liquid line solenoid valv e(s) for proper operation. Replace if necessary . 2. Filter drier plugged. 2. Replace filter drier . 3. Expansion valve power head defective. 3. Replace powe ...

  • Carrier 38AUZ - page 25

    25 APPENDIX AIR CONDITIONER AND HEA T PUMP WITH PURON ® — QUICK REFERENCE GUIDE •P u r o n ® (R-410A) refrigerant operates at 50 percent to 70 percent higher pressures than R-22. Be sure that servicing equipment and re placement components are designed to operate with Puron ® . •P u r o n ® refrigerant cylinders are rose colored. • Reco ...

  • Carrier 38AUZ - page 26

    Copyright 2009 Ca rrier Corp • 7310 W . Morris S t. • Indianapolis, IN 46231 Printed in U.S.A. Edition Date: 03/09 Catalog No: 38AU-01SI Manufacturer reserves the right to change, at any time, spec ifica tions and designs without notice and without obligations. Replaces: NEW 26 ...

  • Carrier 38AUZ - page 27

    CL-1 III. ST ART UP ST ART -UP CHECKLIST I. PRELIMINAR Y INFORMA TION OUTDOOR: MODEL NO. SERIAL NO. INDOOR: AIR HANDLER MANUF ACTURER MODEL NO. SERIAL NO. ADDITIONAL ACCESSORIES II. PRE-ST ART -UP OUTDOOR UNIT IS THERE ANY SHIPPING DAMAGE? (Y/N) IF SO, WHERE: WILL THIS DAMAGE PREVENT UNIT ST AR T -UP? (Y/N) CHECK POWER SUPPL Y . DOES IT AGREE WIT H ...

  • Carrier 38AUZ - page 28

    Copyright 2009 Carr ier Corp • 7310 W . Morris S t. • Indianapolis, IN 46231 Printed in U.S.A. Edition Date: 03/09 Catalog No: 38AU-01SI Manufacturer reserves the right to change, at any time, spec ifications and designs without notice and without obligations. Pg CL -2 Replaces: NEW - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ...

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