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Carrier 38AKS013-024 manual

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Table of contents for the manual

  • Page 1

    Installation, Start-Up and Service Instructions CONTENTS Page SAFETY CONSIDERA TIONS ...................1 INST ALLA TION ............................. 1-12 Step 1 — Complete Pre-Installation Checks ....................................1 Step 2 — Rig and Mount the Unit .............8 Step 3 — Complete Refrigerant Piping Connections ............[...]

  • Page 2

    NOTE: Service areas — Allow 3 ft (914 mm) on both sides and 2 ft (610 mm) on both ends of unit for servicing. Fig. 1 — Dimensions 2[...]

  • Page 3

    13 2 4567 8 12 9 10 11 LEGEND 1— No. 1 Fan 5— No. 2 Fan 9— Compressor 2— High-Pressure Switch 6— T erminal Block 1 (Unit Power) 1 0— Low-Pressure Switch 3— Circuit Breaker — Control Circuit 7— T erminal Block 2 (Control Power) 11 — Hot Gas Bypass Piping Stub ( 3 ⁄ 8 -in. ODM) 4— Circuit Breakers — Power Circuits 8— W rap[...]

  • Page 4

    T able 1A — Physical Data (English, 60 Hz) UNIT 38AKS 013 014 016 024 OPERA TING WEIGHT (lb) With Aluminum-Fin Coil 732 779 789 900 With Copper-Fin Coil 825 919 929 1040 REFRIGERANT* R-22 Shipping Charge (lb) 2.1 3.1 3.1 3.1 Operating Charge, T ypical (lb)† 22 23 23 28 COMPRESSOR Reciprocating, Semi-Hermetic Model 06DD824 06DD328 06DD537 06EA25[...]

  • Page 5

    T able 1B — Physical Data (SI, 60 Hz) UNIT 38AKS 013 014 016 024 OPERA TING WEIGHT (kg) With Aluminum-Fin Coil 332 353 358 408 With Copper-Fin Coil 374 417 421 472 REFRIGERANT* R-22 Shipping Charge (kg) 0.95 1.40 1.40 1.40 Operating Charge, T ypical (kg)† 10.0 10.4 10.4 12.7 COMPRESSOR Reciprocating, Semi-Hermetic Model 06DD824 06DD328 06DD537 [...]

  • Page 6

    T able 1C — Physical Data (English, 50 Hz) UNIT 38AKS 013 014 016 024 OPERA TING WEIGHT (lb) With Aluminum-Fin Coil 732 779 789 900 With Copper-Fin Coil 825 919 929 1040 REFRIGERANT* R-22 Shipping Charge (lb) 2.1 3.1 3.1 3.1 Operating Charge, T ypical (lb)† 22 23 23 28 COMPRESSOR Reciprocating, Semi-Hermetic Model 06DD824 06DD328 06DD537 06EA25[...]

  • Page 7

    T able 1D — Physical Data (SI, 50 Hz) UNIT 38AKS 013 014 016 024 OPERA TING WEIGHT (kg) With Aluminum-Fin Coil 332 353 358 408 With Copper-Fin Coil 374 417 421 472 REFRIGERANT* R-22 Shipping Charge (kg) 0.95 1.40 1.40 1.40 Operating Charge, T ypical (kg)† 10.0 10.4 10.4 12.7 COMPRESSOR Reciprocating, Semi-Hermetic Model 06DD824 06DD328 06DD537 [...]

  • Page 8

    Step 2 — Rig and Mount the Unit Be sure unit panels are securely in place prior to rigging. RIGGING — These units are designed for overhead rigging only . For this purpose, the transverse base channels extend beyond the sides of the unit, with holes provided in the end plates to attach cables or hooks. Rig with top skid packaging assembly in pl[...]

  • Page 9

    T able 4A — Refrigerant Piping Sizes — 60 Hz Units UNIT 38AKS LENGTH OF INTERCONNECTING PIPING, FT (M) 0-15 (0-4.5) 15-25 (4.5-7.5) 25-50 (7.5-15) 50-75 (15-23) 75-100 (23-30) Line Size (in. OD) L S L SLS LSLS 013 1 ⁄ 2 1 1 ⁄ 8 1 ⁄ 2 1 1 ⁄ 8 5 ⁄ 8 1 3 ⁄ 8 5 ⁄ 8 1 3 ⁄ 8 5 ⁄ 8 1 5 ⁄ 8 * 014 1 ⁄ 2 1 1 ⁄ 8 1 ⁄ 2 1 3 ⁄ 8 [...]

  • Page 10

    INST ALL FIL TER DRIER(S) AND MOISTURE INDICA- TOR(S) — Every unit should have a filter drier and liquid- moisture indicator (sight glass). In some applications, depending on space and convenience requirements, it may be desirable to install 2 filter driers and sight glasses. One filter drier and sight glass may be installed at A locations in [...]

  • Page 11

    T able 6A — Electrical Data (3 Ph/60 Hz) UNIT 38AKS UNIT COMPR F AN MOT ORS (Single Phase) Model V olts MCA ICF MOCP (Fuse Only) RLA LRA T otal Fans FLA (ea) Fan No. kW Nameplate Supplied* Min Max 1 2 013 501 208-230 187 253 62.5 178 100 43.6 170 2 4.3 3.7 1.41 201 380 342 418 35.0 101 50 24.0 93 4.3 3.7 601 460 414 528 29.1 81 40 20.0 77 2.3 1.9[...]

  • Page 12

    T able 6B — Electrical Data (3 Ph/50 Hz) UNIT 38AKS UNIT COMPR F AN MOT ORS 230 v (Single Phase) Model V olts MCA ICF MOCP (Fuse Only) RLA LRA T otal Fans FLA (ea) Fan No. kW Nameplate Supplied* Min Max 1 2 013 803 230 198 264 47.5 134 75 32.9 128 2 2.9 3.5 1.20 903 400 342 457 31.4 80 50 20.0 74 014 803 230 198 264 51.0 149 75 35.7 143 2 2.9 3.5[...]

  • Page 13

    ST ART -UP Compressor crankcase heater must be on for 24 hours before start-up. After the heater has been on for 24 hours, the unit can be started. If no time has elapsed since the pre- liminary charge step has been completed, it is unnecessary to wait the 24-hour period. Preliminary Checks 1. Ensure that compressor service valves are backseated. 2[...]

  • Page 14

    Fig. 10 — 38AKS013 and 38AKS024 Charging Chart 14[...]

  • Page 15

    Fig. 1 1 — 38AKS014 Charging Chart 15[...]

  • Page 16

    Fig. 12 — 38AKS016 Charging Chart 16[...]

  • Page 17

    OPERA TING SEQUENCE Cooling — When the first stage (TC1) of the cooling ther- mostat closes, the timer starts. After approximately 3 seconds, the timer expires, energizing the compressor and fan motor no. 1. When the liquid pressure builds to approxi- mately 257 psig (1772 kPa), fan motor no. 2 is energized. On demand for additional cooling capa[...]

  • Page 18

    Winter Start Control (If Required) — Install Ac- cessory Package 38AE900021. Crankcase Heater — The heater prevents refrigerant migration and compressor oil dilution during shutdown when- ever compressor is not operating. It is wired to cycle with the compressor; the heater is of f when compressor is run- ning, and on when compressor is of f. B[...]

  • Page 19

    Fig. 15 — Outdoor Fan Fig. 16 — Pivot and Support T op Cover Fig. 17 — Coil Cleaning (T ypical) 19[...]

  • Page 20

    TROUBLESHOOTING PROBLEM SOLUTION COMPRESSOR DOES NOT RUN Contactor Open 1. Power off. 1. Restore power . 2. Fuses blown in field power circuit. 2. After finding cause and correcting, replace with correct size fuse. 3. No control power . 3. Check control circuit breaker; reset if tripped or replace if defective. 4. Thermostat circuit open. 4. Chec[...]

  • Page 21

    TROUBLESHOOTING (cont) PROBLEM SOLUTION COMPRESSOR CYCLES ON LOW-PRESSURE SWITCH (cont) Airflow Restricted 1. Coil iced up. 1. Check refrigerant charge. 2. Coil dirty . 2. Clean coil fins. 3. Air filters dirty . 3. Clean or replace filters. 4. Dampers closed. 4. Check damper operation and position. Indoor-Air Fan Stopped 1. Electrical connectio[...]

  • Page 22

    Copyright 1998 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 4 Ta b 3 a 2 a PC 1 1 1 Catalog No. 563-701 Printed in U.S.A. Form 38AKS-3SI Pg 22 9-98 Replaces: 38AKS-2SI[...]

  • Page 23

    ST ART -UP CHECKLIST A. Preliminary Information OUTDOOR: MODEL NO. SERIAL NO. INDOOR: AIR HANDLER MANUF ACTURER MODEL NO. SERIAL NO. ADDITIONAL ACCESSORIES B. Pre-Start-Up OUTDOOR UNIT IS THERE ANY SHIPPING DAMAGE? (Y/N) IF SO, WHERE: WILL THIS DAMAGE PREVENT UNIT ST ART -UP? (Y/N) CHECK POWER SUPPL Y . DOES IT AGREE WITH UNIT? (Y/N) HAS THE GROUND[...]

  • Page 24

    C. Start-Up CHECK INDOOR UNIT F AN SPEED AND RECORD. CHECK OUTDOOR UNIT F AN SPEED AND RECORD. AFTER A T LEAST 10 MINUTES RUNNING TIME, RECORD THE FOLLOWING MEASUREMENTS: OIL PRESSURE SUCTION PRESSURE SUCTION LINE TEMP DISCHARGE PRESSURE DISCHARGE LINE TEMP ENTERING OUTDOOR UNIT AIR TEMP LEA VING OUTDOOR UNIT AIR TEMP INDOOR UNIT ENTERING-AIR DB (d[...]