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38AUZ
Air-Cooled Condensing Units
60 Hz
®
with Puron (R-410A) Refrigerant
Sizes 07, 08, 12, 14
Installation, Start-Up and
Service Instructions
CONTENTS SAFETY CONSIDERATIONS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . 1 Improper installation, adjustment, alteration, service,
maintenance, or use can cause explosion, fire, electrical shock
INSTALLATION GUIDELINES. . . . . . . . . . . . . . . . . . . . . . . 2
or other conditions which may cause personal injury or
INSTALLAT
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INSTALLATION GUIDELINE ® Replacement /Retrofit – R22 to Puron ELECTRICAL SHOCK HAZARD Replacement/retrofit installations require change-out of Failure to follow this warning could cause personal injury outdoor unit, metering device, and filter driers. Change-out of or death. indoor coil (evaporator) and interconnecting tubing is recommended. Before performing service or maintenance operations on unit, always turn off main power switch to unit and install Existing evaporator coil – If the existi
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Standard Corner Corner Corner Corner Center of Gravity Unit Height Weight A B C D UNIT lbs. kg. lbs. kg. lbs. kg. lbs. kg. lbs. kg. X Y Z H 21.00 19.00 13.00 42.36 38AUZ*07 328 149 128 58 68 31 62 28 70 32 [533.4] [482.6] [330.2] [1076.0] 19.00 23.00 13.00 42.36 38AUZ*08 353 160 138 63 72 33 65 29 78 35 [482.6] [584.2] [330.2] [1076.0] 23.00 20.00 15.00 50.36 38AUZ*12 418 190 165 75 85 39 78 35 90 41 [584.2] [508.0] [381.0] [1279.2] 19.00 23.00 15.00 50.36 38AUZ*14 431 196 162 73 82 37 92 42
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Table 1A — Physical Data — 38AUZ*07-14 Units — 60 Hz English UNIT SIZE 38AU Z*07Z*08Z*12Z*14 6 7.5 10 12.5 NOMINAL CAPACITY (tons) OPERATING WEIGHT (lb) Aluminum-Fin Coils (Standard) 328 353 418 431 R-410A REFRIGERANT TYPE* Operating Charge, Typical (lb)† 8.4 10.2 13.8 18.0 Shipping Charge (lb) 4.4 4.9 6.3 7.3 Scroll COMPRESSOR Qty...Model 1...ZP61 1...ZP83 1...ZP103 1...ZP137 Oil Charge (oz) 56 60 110 110 No. Cylinders N/A Speed (rpm) 3500 CONDENSER FANS Qty...Rpm 2...1100 1 Motor Hp / 4 Diamet
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Table 1B — Physical Data — 38AUZ*07-14 Units — 60 Hz SI UNIT SIZE 38AU Z*07 Z*08 Z*12 Z*14 21.1 26.4 35.1 44 NOMINAL CAPACITY (kW) OPERATING WEIGHT (kg) Aluminum-Fin Coils (Standard) 149 160 190 196 R-410A REFRIGERANT TYPE* Operating Charge, Typical (kg)† 3.8 4.6 6.3 8.2 Shipping Charge (kg) 2.0 2.2 2.9 3.3 Scroll COMPRESSOR Qty...Model 1...ZP61 1...ZP83 1...ZP103 1...ZP137 Oil Charge (L) 1.7 1.8 3.3 3.3 No. Cylinders N/A Speed (r/s) 58 CONDENSER FANS Qty...r/s 2...18 1 Motor Hp NEMA / 4 Diamete
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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 Type Packaging 38AU= Carrier Condensing Unit 0=Standard Puronr R---410A Refrigerant 1=LTL Type of Coil Electrical Options Z = Single Circuit, A/C Scroll Compressor A=None C = Non-Fused Disconnect Refrigerant Options A = None Service Options B = Low Ambient 0=None 1= 1 = Un-powered Convenience Outlet Nominal Tonnage 2 = Powered Convenience Outlet 07 = 6 Tons 08 = 7.5 Tons Not Used 12 = 10 Ton
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• Locate the unit so that the outdoor coil (condenser) air- .INSTALLATION flow is unrestricted on all sides and above. • The unit may be mounted on a level pad directly on the Jobsite Survey base channels or mounted on raised pads at support Complete the following checks before installation. points. See Tables 1A and 1B for unit operating weights. 1. Consult local building codes and the NEC (National See Fig. 1 for weight distribution based on recommended Electrical Code) ANSI/NFPA 70 for specia
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Table 3 — Refrigerant Piping Sizes — in the liquid line. Refer to the indoor unit installation 38AUZ*07-14 60 Hz Units instructions for additional details. Determine equivalent line length adjustments for path and LINEAR LENGTH OF INTERCONNECTING PIPING — components and add to linear line lengths. See Tables 2 and 3; FT (m) also refer to Part 3 of the Carrier System Design Manual and 0-25 25-50 50-75 75-100 UNIT E20-II® software for design details and line sizing. (0-7.5) (7.5-15) (15-23) (23-3
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Table 4 — Refrigerant Specialities Part Numbers. LIQUID LINE LIQUID LINE LLSV SIGHT FILTER SUCTION LINE UNIT SIZE (in.) SOLENOID VALVE (LLSV) COIL GLASS DRIER ACCUMULATOR 3 38AUZ*07 / 200RB5T3M AMG/24V AMI-1TT3 P502-8304S* S-7063S* 8 3 / 200RB5T3M AMG/24V AMI-1TT3 P502-8304S* S-7063S* 8 38AUZ*08 1 / 200RB5T4M AMG/24V AMI-1TT4 P502-8304S S-7063S* 2 1 38AUZ*12 / 200RB6T4M AMG/24V AMI-1TT4 P502-8307S* S-7063 2 5 38AUZ*14 / 200RB6T5M AMG/24V AMI-1TT5 P502-8307S* S-7063 8 *Bushings required. UNIT OPE
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leads according to required operation of the convenience outlet. All units - If an always-energized convenience outlet operation is desired, All field wiring must comply with NEC and all local codes. connect the source leads to the line side of the unit-mounted Size wire based on MCA (Minimum Circuit Amps) on the unit disconnect. (Check with local codes to ensure this method is informative plate. See Fig. 8 for power wiring connections to acceptable in your area.) If a de-energize via unit disco
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Convenience Outlet GFCI Pwd-CO Fuse Switch Pwd-CO Transformer Control Box Access Panel UNIT CONNECT PRIMARY TRANSFORMER Fig. 9 — Convenience Outlet Location VOLTAGE AS CONNECTIONS TERMINALS 208, L1: RED + YEL H1 + H3 Non-powered type: This type requires the field installation of 240 230 L2: BLU + GRA H2 + H4 a general-purpose 125-volt 15-A circuit powered from a source L1: RED elsewhere in the building. Observe national and local codes H1 Splice BLU + 460 480 H2 + H3 when selecting wire size
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COVER – WHILE-IN-USE RECEPTACLE Central R WEATHERPROOF NOT INCLUDED Terminal Board G X X Y1 C C G G O/B/Y2 (Notes 1, 2) W2 W2 W1 W1 Y2 Y2 Y1 Y1 C R R (Note 3) T–STAT BASE PLATE FOR GFCI RECEPTACLE Note 1: Typical multi-function marking. Follow manufacturer’s configuration instructions to select Y2. Fig. 11 — Weatherproof Cover Installation Note 2: Y2 to economizer required on single-stage cooling units when integrated economizer function is desired All Units — Note 3: Connect only if t
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Table 5 — Electrical Data — 38AUZ*07-14 60 Hz Units NOMINAL VOLTAGE FAN MOTORS POWER UNIT FACTORY- COMPRESSOR VOLTAGE RANGE* (Qty 2) SUPPLY SIZE INSTALLED 38AU OPTION V-Ph-Hz MIN MAX RLA LRA FLA (ea) LRA (ea) MCA MOCP NONE OR DISCONNECT 208/230-3-60 187 253 19 123 1.5 3.7 25.2 45 CONVENIENCE OUTLET NONE OR DISCONNECT 460-3-60 414 506 9.7 62 0.8 1.9 12.9 20 Z*07 CONVENIENCE OUTLET NONE OR DISCONNECT 575-3-60 518 633 7.4 50 0.6 1.6 9.9 15 CONVENIENCE OUTLET NONE OR DISCONNECT 208/230-3-60 187 253
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PRE-START-UP START-UP IMPORTANT: Before beginning Pre-Start-Up or Start-Up, 38AUZ Units — The compressor crankcase heater must be review Start-Up Checklist at the back of this book. The on for 24 hours before start-up. After the heater has been on for Checklist assures proper start-up of a unit and provides a 24 hours, the unit can be started. If no time elapsed since the record of unit condition, application requirements, system preliminary charge step was completed, it is unnecessary to inform
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ADVANCED SCROLL TEMPERATURE PROTECTION START UNIT — The field disconnect is closed, the indoor (ASTP) — Advanced Scroll Temperature Protection (ASTP) fan circuit breaker is closed, and the space thermostat is set is a form of internal discharge temperature protection, used in above ambient so that there is no demand for cooling. Only the 38AUZ*12 and 38AUZ*14 units, that unloads the scroll com- crankcase heater will be energized. pressor when the internal temperature reaches approximately Reset
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Fig. 16 — 38AUZ*07 Charging Chart Fig. 17 — 38AUZ*08 Charging Chart Fig. 18 — 38AUZ*12 Charging Chart 16
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Fig. 19 — 38AUZ*14 Charging Chart Fig. 20 — 38AU Wiring Diagram 17
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OPERATING SEQUENCE ROUTINE SYSTEM MAINTENANCE These items should be part of a routine maintenance program, Base Unit Controls to be checked every month or two, until a specific schedule for Indoor (Supply) Fan each can be identified for this installation: The indoor fan contactor (IFC) is remotely located at the fan Quarterly Inspection (and 30 days after initial coil or fan section. If the thermostat fan operation is selected as start) Continuous, the IFC is energized and the indoor (supply) fa
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SERVICE POWER (GRN) 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 electrical and system related failures without any sensors. Flashing LEDs communicate the Alert codes to guide service technicians in accurately and quickly troubleshooting the system and de
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Table 6 — LED Status Codes Status LED Status LED Description Status LED Troubleshooting Information Green “POWER” Module has power Supply voltage is present at module terminals Red “TRIP” Thermostat demand signal Y 1. Compressor protector is open LED On Solid is present, but the 2. Condensing unit power disconnect is open compressor is not running. 3. Compressor circuit breaker or fuse(s) is open 4. Broken supply wires or connector is not making contact 5. Compressor power wires not routed thr
