Page 2 - Table 1 — Unit Sizes; Comfort; 8AP UNIT SIZE
2 When working on this equipment, observe precautions in the literature, and on tags, stickers, and labels attached to the equipment, and any other safety precautions that apply. Follow all safety codes. Wear safety glasses and work gloves. Use care in handling, rigging, and setting this equipment, ...
Page 3 - Fig. 1 — Component Arrangement — Unit Sizes 025-030
3 Fig. 1 — Component Arrangement — Unit Sizes 025-030 LEGEND AUX — Auxiliary C — Contactor CB — Circuit Breaker CCHR — Crankcase Heater Relay CSB — Current Sensor Board EMM — Energy Management Module EQUIP GND — Equipment Ground FB — Fuse Block FC — Fan Contactor LON — Local Operating Network MBB — ...
Page 4 - Fig. 2 — Component Arrangement — Unit Sizes 040-060
4 Fig. 2 — Component Arrangement — Unit Sizes 040-060 LEGEND AUX — Auxiliary C — Contactor CB — Circuit Breaker CCH — Crankcase Heater Relay CSB — Current Sensor Board EMM — Energy Management Module EQUIP GND — Equipment Ground FC — Fan Contactor FCB — Fan Circuit Breaker LON — Local Operating Netwo...
Page 5 - Fig. 3 — Component Arrangement — Unit Sizes 070-100
5 Fig. 3 — Component Arrangement — Unit Sizes 070-100 LEGEND AUX — Auxiliary C — Contactor CB — Circuit Breaker CCH — Crankcase Heater Relay CSB — Current Sensor Board CXB — Compressor Expansion Board EMM — Energy Management Module EQUIP GND — Equipment Ground FC — Fan Contactor FCB — Fan Circuit Br...
Page 14 - Fig. 11 — Field Power Wiring; LEGEND; MAT; Mixed Air Temperature Sensor; RAT; Return Air Temperature Sensor; SAT; Supply Air Temperature Sensor
14 OUT S IDE AIR DUCT S UPPLY RETURNAIR MAT/RAT S AT F S 1* FAN EVAPORATORCOIL Fig. 11 — Field Power Wiring LEGEND NOTES: 1. Factory wiring is in accordance with UL 1995 standards. Field modifications or additions must be in compliance with all applicable codes. 2. All units or modules have single p...
Page 15 - †Not required for single circuit units.; Not required for single circuit units.; TRIP; †Not required for single circuit units.; TRIP
15 25 24 2 3 22 21 20 19 1 8 17 16 15 14 1 3 REMOTE ON/OFF LVTTERMINAL S TRIP 12 11 10 9 8 7 6 5 4 3 2 1 ALM R F S 1 S PT S A LL S V- A S EE NO TE 6 S AT * MA T/RA T * LL S V- B † a38-7125 a38-7127 * See Fig. 12 for MAT/RAT and SAT location. †Not required for single circuit units. Fig. 15 — Constant...
Page 16 - Fig. 17 — Optional Energy Management Module Wiring
16 25 24 2 3 22 21 20 19 1 8 17 16 15 14 1 3 REMOTE ON/OFF LVTTERMINAL S TRIP 12 11 10 9 8 7 6 5 4 3 2 1 ALM R F S 1 LL S V- A S EE NO TE 6 S AT * MA T/RA T * LL S V- B † 25 24 2 3 22 21 20 19 1 8 17 16 15 14 1 3 LVTTERMINAL S TRIP 12 11 10 9 8 7 6 5 4 3 2 1 DEMAND LIMIT S TEP 1 DEMAND LIMIT S TEP 2...
Page 17 - Display Module Usage; Enter Password; MODE; ESCAPE; Fig. 18 — Scrolling Marquee Display; Fig. 19 — Accessory Navigator Display Module
17 Display Module Usage SCROLLING MARQUEE DISPLAY — This device is the keypad interface used for accessing unit information, reading sensor values, and testing the unit. See Fig. 18. The scrolling marquee display is a 4-key, 4-character, 16-segment LED (light-emitting diode) display. Eleven mode LED...
Page 18 - Table 2 — Scrolling Marquee Display Menu Structure*
18 Adjusting the Contrast — The contrast of the display can beadjusted to suit ambient conditions. To adjust the contrast ofthe Navigator module, press the key until the dis- play reads, “Select a menu item.” Using the arrow keys moveto the Configuration mode. Press to obtain access to this mode. Th...
Page 19 - Emergency On/Off Switch —; Fig. 20 — Main Base Board
19 Table 3 — Thermistor Designations Table 4 — Switch Inputs Compressor Expansion Module (CXB) — The CXB is only used on unit sizes 070-100 to provide additional inputs and outputs for fans and compressors when the unit has more than 4 compressors. AUX Board (AUX) — The AUX is used with the digital ...
Page 20 - Carrier Comfort Network; Table 5 — CCN Communication Bus Wiring; Sensors —; CB; Circuit Breaker; SW —; Switch
20 Carrier Comfort Network ® (CCN) Interface — The 38AP units can be connected to the CCN if desired. The communication bus wiring is a shielded, 3-conductor cable with drain wire and is supplied and installed in the field. See Table 5. The system elements are connected to the communi- cation bus in...
Page 21 - Fig. 22 — 33ZCSENSAT Sensor; Fig. 24 — Space Temperature Sensor
21 SUPPLY AIR TEMPERATURE (SAT) ACCESSORY (33ZCSENSAT) — A supply air temperature sensor is required for unit sizes 040-100 and all units equipped with the digital scroll option. The SAT sensor consists of a thermistor encased within a stainless steel probe. See Fig. 22. The SAT sensor probe is 6 in...
Page 22 - SPACE TEMPERATURE AVERAGING — 4 SENSOR APPLICATION; Fig. 27 — Space Temperature Averaging; SPACE TEMPERATURE AVERAGING — 9 SENSOR APPLICATION
22 Units on the CCN can be monitored from the space using the RJ11 connector provided with the space sensor, if desired. To wire the RJ11 connector into the CCN (Fig. 26): 1. Cut the CCN wire and strip ends of the red (+), white (ground), and black (–) conductors. (If another wire color scheme is us...
Page 23 - CAUTION; Fig. 28 — Energy Management Module
23 Fan Status Input — A proof-of-fan operation is recom- mended and needs to be field installed in the indoor unit. Sev- eral different types of switches can be utilized, such as a differ- ential pressure switch located across the indoor fan or auxiliary contacts on an indoor fan contactor. Thermost...
Page 24 - Table 6 — Unit Capacity Control; CTPT; Space Temperature Set Point
24 • C.TYP = 3 (TSTAT-MULTI) configuration will force the MBB to monitor the thermostat inputs to make a determination of mode. Unlike traditional 2-stage ther- mostat control, the unit is allowed to use multiple stages of cooling control and perform VAV style operation. The control will be able to ...
Page 26 - Head Pressure Control —; Table 9 — Fan Stages
26 MINUTES LEFT FOR START — This value is displayed only in the network display tables (using Service Tool, ComfortVIEW™ or ComfortWORKS ® software) and represents the amount of time to elapse before the unit will start its initialization routine. This value can be zero without the machine running i...
Page 27 - ss; Fig. 30 — Compressor and Fan Location
27 Outdoor Fan Layout – Top View S ize s 025-0 3 0 S ize s 040, 050 S ize s 060, 070 CONTROL BOX CONTROL BOX OFM1 OFM2 OFM2 OFM 3 OFM1 CONTROL BOX OFM 3 OFM4 OFM2 OFM1 S ize 0 8 0 S ize s 090, 100 CONTROL BOX OFM2 OFM 3 OFM5 OFM6 OFM1 CONTROL BOX OFM4 OFM5 OFM6 OFM2 OFM 3 OFM1 Compre ss or Layout Du...
Page 28 - Service Test —; Both main power and control circuit; Operating Modes
28 Service Test — Both main power and control circuit power must be on . The Service Test function should be used to verify proper operation of condenser fan(s), compressors, minimum loadvalve solenoid (if installed), liquid line solenoid valve (ifinstalled), and remote alarm relay. To use the Servi...
Page 29 - Fig. 32 — Space Temperature Reset
29 CHIL_S_S variable is 'Stop.' Similarly, the control mode will be 6 when the CHIL_S_S variable is 'Start.' Set Point Adjustment CV SET POINT ADJUSTMENT — If the unit is configured for control type SPT MULTI ( C.TYP =5) and the Space Tem- perature Offset Sensor is enabled. ( SP.O.S ) set to enable ...
Page 31 - Demand Limit —; Table 13 — Configuring Demand Limit; fort
31 Demand Limit — Demand Limit is a feature that allows the unit capacity to be limited during periods of peak energy usage. There are 3 types of demand limiting that can be configured. The first type is through 2-stage switch control, which will reduce the maximum capacity to 2 user-configu- rable ...
Page 32 - Digital Scroll Option —; Table 14 — Configuration VAV 4 to 20 mA Set Point
32 DEMAND LIMIT (CCN Loadshed Controlled) — To con- figure Demand Limit for CCN Loadshed control, set the De- mand Limit Select ( Configuration RSET DMDC ) to 3. Then configure the Loadshed Group Number ( Configura- tion RSET SHNM ), Loadshed Demand Delta ( Configu- ration RSET SHDL ), and Maximum L...
Page 33 - UPPL; Fig. 34 — 4 to 20 mA Supply Set Point
33 PRE-START-UP Do not attempt to start the air-conditioning system until the following checks have been completed. System Check 1. Check all system components, including the air-handling equipment. Consult manufacturer's instructions. If the unit has field-installed accessories, be sure all are pro...
Page 34 - Adjust Refrigerant Charge
34 Table 15 — Preliminary Puron Refrigerant (R-410A) Charge, lb (kg) NOTES: 1. Preliminary charge is based on 25 ft (7.6 m) of interconnecting liquid line piping between indoor and outdoor units. 2. For liquid line piping longer than 25 ft (7.6 m), use the following information: 1 / 2 in. (12.7 mm) ...
Page 38 - Circuit B
38 Fig. 41 — Charging Chart — 38APD040 — Circuit A, 50/60 Hz 90 100 110 120 130 Circuit A 50 40 E A T LIQUID VA LVE (DEG C) E A T LIQUID VA LVE (DEG F) ADD CHARGE IF ABOVE CURVE 50 SST 40 SST 30 SST 60 70 80 90 100 110 120 130 200 250 300 350 400 450 500 550 600 LIQUID PRESSURE AT LIQUID VALVE (PSIG...
Page 39 - Circuit A
39 Fig. 43 — Charging Chart — 38APS040, 50/60 Hz Fig. 44 — Charging Chart — 38APD050 — Circuit A, 50/60 Hz 90.0 100.0 110.0 120.0 130.0 Single Circuit 50 40 30 R A T URE A T LI QUI D VA LVE ( D EG C) R A T URE A T LI QUI D VA LVE ( D EG F) ADD CHARGE IF ABOVE CURVE REDUCE CHARGE IF BELOW CURVE 50 SS...
Page 41 - Circuit B
41 Fig. 48 — Charging Chart — 38APD060 — Circuit B, 50/60 Hz Fig. 47 — Charging Chart — 38APD060 — Circuit A, 50/60 Hz 90.0 100.0 110.0 120.0 130.0 Circuit A 50 40 30 R A T URE A T LI QUI D VA LVE ( D EG C) R A T URE A T LI QUI D VA LVE ( D EG F) ADD CHARGE IF ABOVE CURVE REDUCE CHARGE IF BELOW CURV...
Page 46 - Sight Glass Locations for 38APD025-100 Dual-Circuit Units; LLS —; Liquid Line Solenoid; TXV —; Thermostatic Expansion Valve; Sight Glass Locations for 38APS025-050 Single-Circuit Units
46 LEGEND * Field-supplied. †Field-supplied when required. Must be controlled by 38AP unit control. Fig. 57 — Required Location of Solenoid Valves and Recommended Filter Drier and Sight Glass Locations for 38APD025-100 Dual-Circuit Units LLS — Liquid Line Solenoid TXV — Thermostatic Expansion Valve ...
Page 47 - Set Point; Fig. 60 — Typical Trio Compressor Assembly; Fig. 59 — Typical Tandem Compressor Assembly
47 Check Compressor Oil Level — After adjusting the refrigerant charge, allow each circuit to run fully loaded for 20 minutes. Stop the compressors and check the oil level. Oil level should be 1 / 8 to 3 / 8 up on the sight glass. Add oil only if necessary to bring the oil into view in the sight gla...
Page 48 - OPERATION; Table 16 — 38AP Unit Ambient Limitations; Operation Sequence —
48 2. Fan status switch input should close. Note the unit will not start unless the fan status input is closed. 3. Close Y1 input unit will stage up to 50 % capacity with 1 minute between stages. 4. Close Y2 input the unit will stage up to 100% capacity with 1 minute between stages. CV APPLICATION —...
Page 49 - not
49 For all units, if temperature reset is used, the unit controls to a higher leaving temperature as the building load reduces. If demand limit is used, the unit may temporarily be unable to maintain the desired leaving-air temperature because of im- posed power limitations. Loading sequence for com...
Page 53 - Table 21 — 86K Thermistor vs Resistance (DTT)
53 Table 20 — 10K Thermistor Temperature (°C) vs. Resistance/Voltage Drop Table 21 — 86K Thermistor vs Resistance (DTT) TEMP (C) VOLTAGE DROP (V) RESISTANCE (Ohms) –32 4.762 200,510 –31 4.748 188,340 –30 4.733 177,000 –29 4.716 166,342 –28 4.700 156,404 –27 4.682 147,134 –26 4.663 138,482 –25 4.644 ...
Page 54 - Fig. 62 — Mounted Fan Position
54 Pressure Transducers — The suction and discharge transducers are different part numbers and can be distinguished by the color of the transducer body, suction (yellow) and dis- charge (red). Figures 59 and 60 shows typical location of pres- sure transducers on each circuit. No pressure transducer ...
Page 56 - Table 22 — Fault Codes; Mode; Fig. 63 — Motormaster; MMV; Motormaster V Control
56 Table 22 — Fault Codes FAULT CODE DESCRIPTION SOLUTION AF High Temperature Fault: Ambient temperature is too high; Cooling fan has failed (if equipped). Check cooling fan operation CF Control Fault: A blank EPM, or an EPM with corrupted data has been installed. Perform a factory reset using Param...
Page 57 - VOLT ONLY; Fig. 64 — Typical Motormaster
57 20 8 /2 3 0, 460, 575 VOLT ONLY MOTORMA S TER V TERMINAL BLOCK 21 FR1 1 2 5 6 11 12 2 14 1 3 A 1 3 B 1 3 C 15 25 2 20 8 VOLT ONLY RED BLK 400 VOLT ONLY 14 21 FR1 14 21 FR1 14 Fig. 64 — Typical Motormaster ® Wiring Configuration Table * 208-v can run in mode 5 or 6. MODE NOMINAL VOLTAGE Hz CONTROL...
Page 58 - PARAMETER
58 Table 23 — Motormaster ® V Program Parameters for Operating Modes LEGEND PARAMETER DESCRIPTION MODE 5 MODE 6 MODE 7 MODE 8 P01 Line Voltage: 01 = low line, 02 = high line 01 02 01 02 P02 Carrier Freq: 01 = 4 kHz, 02 = 6 kHz, 03=8 kHz 01 01 01 01 P03 Start-up mode: flying restart 06 06 06 06 P04 S...
Page 59 - Table 24 — Controller Cross-Reference; Table 25 — Replacement Modules
59 TROUBLESHOOTING — Troubleshooting the Motormas- ter ® V control requires a combination of observing system op- eration and VFD display information. The MMV should fol- low the 4 to 20 mA signal from the Comfort Link™ controls. The speed command from the Comfort Link controls can be monitored in 2...
Page 61 - Alarms and Alerts —; Fig. 66 — Recommended Minimum Cool Down; Fig. 65 — Advanced Scroll Temperature
61 Advanced scroll temperature protection is a form of internal discharge temperature protection that unloads the scroll com- pressor when the internal temperature reaches approximately 300 F. At this temperature, an internal bi-metal disk valve opens and causes the scroll elements to separate, whic...
Page 64 - Table 26 — Alarm and Alert Codes
64 A170 (Loss of Communication with the Compressor Expansion Module) — This alarm indicates that there are communications problems with the compressor expansion, which is required for unit sizes 070 to 100. The alarm will auto- matically reset. A173 (Energy Management Module Communication Fail- ure)...
Page 66 - Table 27 — Example of Reading and Clearing Alarms
66 Table 26 — Alarm and Alert Codes (cont) LEGEND Table 27 — Example of Reading and Clearing Alarms ALARM/ ALERT CODE ALARM OR ALERT DESCRIPTION WHY WAS THIS ALARM GENERATED? ACTION TAKEN BY CONTROL RESET METHOD T153 Aler t Real Time Clock Hardware Failure Internal clock on MBB fails Occupancy sched...
Page 67 - APPENDIX A — DISPLAY TABLES; Run Status Mode and Sub-Mode Directory
67 APPENDIX A — DISPLAY TABLES Run Status Mode and Sub-Mode Directory SUB-MODE ITEM DISPLAY ITEM DESCRIPTION COMMENT VIEW RAT xxx.x ºF Return Air Temperature SAT xxx.x ºF Supply Air Temperature SETP xxx.x ºF Active Set Point CTPT xxx.x ºF Control Point LOD.F xxx Load/Unload Factor STAT Control Mode ...
Page 68 - Service Test Mode and Sub-Mode Directory
68 APPENDIX A — DISPLAY TABLES (cont) Run Status Mode and Sub-Mode Directory (cont) Service Test Mode and Sub-Mode Directory SUB-MODE ITEM DISPLAY ITEM DESCRIPTION COMMENT STRT COMPRESSOR STARTS ST.A1 XXXX Compressor A1 Starts ST.A2 XXXX Compressor A2 Starts ST.A3 XXXX Compressor A3 Starts ST.B1 XXX...
Page 71 - Configuration Mode and Sub-Mode Directory
71 APPENDIX A — DISPLAY TABLES (cont) Configuration Mode and Sub-Mode Directory SUB-MODE ITEM DISPLAY ITEM DESCRIPTION COMMENT DISP DISPLAY CONFIGURATION TEST ON/OFF Test Display LEDs METR ON/OFF Metric Display Off = English On = Metric LANG X Language Selection Default: 0 0 = English 1 = Espanol 2 ...
Page 73 - Time Clock Mode and Sub-Mode Directory
73 APPENDIX A — DISPLAY TABLES (cont) Time Clock Mode and Sub-Mode Directory SUB-MODE ITEM DISPLAY ITEM DESCRIPTION COMMENT TIME TIME OF DAY HH.MM XX.XX Hour and Minute Military (00:00 - 23:59) DATE MONTH, DATE, DAY, AND YEAR MNTH XX Month of Year 1 - 12 (1 = January, 2 = February, etc.) DOM XX Day ...
Page 79 - APPENDIX B — CCN TABLES; Status Tables; DESCRIPTION
79 APPENDIX B — CCN TABLES Status Tables DESCRIPTION VALUE UNITS POINT NAME TSTAT_IN (Thermostat Input) Indoor Fan Status-CIRA Off/On IDFA_FS Y1 Thermostat Input Off/On Y1 Y2 Thermostat Input Off/On Y2 Indoor Fan Status-CIRB Off/On IDFB_FS Y3 Thermostat Input Off/On Y3 Y4 Thermostat Input Off/On Y4 ...
Page 81 - CCN Configuration Tables
81 APPENDIX B — CCN TABLES (cont) CCN Configuration Tables DESCRIPTION VALUE UNITS POINT NAME UNIT (Unit Configuration) Unit Size NNN tons SIZE Number of Refrig Ckts N NUMCKTS Compressor A1 Size NNN tons SIZE_A1 Compressor A2 Size NNN tons SIZE_A2 Compressor A3 Size NNN tons SIZE_A3 Compressor B1 Si...
Page 82 - CCN Maintenance Tables
82 APPENDIX B — CCN TABLES (cont) CCN Configuration Tables (cont) CCN Maintenance Tables DESCRIPTION VALUE UNITS POINT NAME DISPLAY (Marquee Display Set Up) Service Password NNNN PASSWORD Password Enable Disable/Enable PASS_EBL Metric Display Off/On DISPUNIT Language Selection N LANGUAGE HPA (Head P...
Page 87 - Design Information; II. Preliminary Equipment Check
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53380003-01 Printed in U.S.A. Form 38AP-1T Pg CL-1 210 11-09 Replaces: New START-UP CHECKLIST FOR 38AP SPLIT SYSTEM CONDENSING UNIT (Remov...
Page 88 - Refrigeration System Check
CL-2 Refrigeration System Check 1. ALL SERVICE VALVES ARE OPEN. YES NO 2. ONLY BLEED TXV(S) ARE INSTALLED. YES NO 3. ALL PIPING IS CONNECTED PROPERLY. YES NO 4. FILTER DRIERS AND SIGHT GLASSES ARE INSTALLED NEAR THE TXV(S). YES NO 5. THE SYSTEM HAS BEEN EVACUATED. YES NO 6. THE S...
Page 89 - Start and Operate Machine. Complete the Following:; YES
CL-3 Start and Operate Machine. Complete the Following: 1. COMPLETE COMPONENT TEST. YES NO 2. CHECK REFRIGERANT AND OIL CHARGE. YES NO 3. FINISH CHARGING ACCORDING TO THE CHARGING CHART PROVIDED. YES NO 4. RECORD COMPRESSOR MOTOR CURRENT. YES NO 5. RECORD CONFIGURATION SETTINGS. YE...
Page 90 - Compressor Running Current —
CL-4 Compressor Running Current — All readings taken at full load. Record Software VersionsMODE — RUN STATUS (PRESS ENTER & ESCAPE SIMULTANEOUSLY TO OBTAIN SOFTWARE VERSIONS) COMPRESSOR MOTOR CURRENT L1 L2 L3 COMPRESSOR A1 COMPRESSOR A2 COMPRESSOR A3 COMPRESSOR B1 COMPRESSOR B2 COMPRESSOR B3 CON...
Page 91 - CUSTOMER
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Carrier 58CTA09010016
User Manual